X-Git-Url: https://git.openstreetmap.org/rails.git/blobdiff_plain/2b4f8e92c969a5508b73ae7af45811a118fda6b1..fde98f7ead8b85a6a2b3ed748ca6f5a199a8e09f:/vendor/assets/iD/iD.js diff --git a/vendor/assets/iD/iD.js b/vendor/assets/iD/iD.js index a19dc713e..9ca35979d 100644 --- a/vendor/assets/iD/iD.js +++ b/vendor/assets/iD/iD.js @@ -1,81957 +1,88114 @@ -(function(exports) { - - var bootstrap = (typeof exports.bootstrap === "object") ? - exports.bootstrap : - (exports.bootstrap = {}); +(function () { + var version = "4.13.0"; - bootstrap.tooltip = function() { + function ascending(a, b) { + return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN; + } - var tooltip = function(selection) { - selection.each(setup); - }, - animation = d3.functor(false), - html = d3.functor(false), - title = function() { - var title = this.getAttribute("data-original-title"); - if (title) { - return title; - } else { - title = this.getAttribute("title"); - this.removeAttribute("title"); - this.setAttribute("data-original-title", title); + function bisector(compare) { + if (compare.length === 1) compare = ascendingComparator(compare); + return { + left: function(a, x, lo, hi) { + if (lo == null) lo = 0; + if (hi == null) hi = a.length; + while (lo < hi) { + var mid = lo + hi >>> 1; + if (compare(a[mid], x) < 0) lo = mid + 1; + else hi = mid; } - return title; + return lo; }, - over = "mouseenter.tooltip", - out = "mouseleave.tooltip", - placements = "top left bottom right".split(" "), - placement = d3.functor("top"); - - tooltip.title = function(_) { - if (arguments.length) { - title = d3.functor(_); - return tooltip; - } else { - return title; - } - }; - - tooltip.html = function(_) { - if (arguments.length) { - html = d3.functor(_); - return tooltip; - } else { - return html; + right: function(a, x, lo, hi) { + if (lo == null) lo = 0; + if (hi == null) hi = a.length; + while (lo < hi) { + var mid = lo + hi >>> 1; + if (compare(a[mid], x) > 0) hi = mid; + else lo = mid + 1; + } + return lo; } }; + } - tooltip.placement = function(_) { - if (arguments.length) { - placement = d3.functor(_); - return tooltip; - } else { - return placement; - } + function ascendingComparator(f) { + return function(d, x) { + return ascending(f(d), x); }; + } - tooltip.show = function(selection) { - selection.each(show); - }; + var ascendingBisect = bisector(ascending); + var bisectRight = ascendingBisect.right; + var bisectLeft = ascendingBisect.left; - tooltip.hide = function(selection) { - selection.each(hide); - }; + function pairs(array, f) { + if (f == null) f = pair; + var i = 0, n = array.length - 1, p = array[0], pairs = new Array(n < 0 ? 0 : n); + while (i < n) pairs[i] = f(p, p = array[++i]); + return pairs; + } - tooltip.toggle = function(selection) { - selection.each(toggle); - }; + function pair(a, b) { + return [a, b]; + } - tooltip.destroy = function(selection) { - selection - .on(over, null) - .on(out, null) - .attr("title", function() { - return this.getAttribute("data-original-title") || this.getAttribute("title"); - }) - .attr("data-original-title", null) - .select(".tooltip") - .remove(); - }; + function cross(values0, values1, reduce) { + var n0 = values0.length, + n1 = values1.length, + values = new Array(n0 * n1), + i0, + i1, + i, + value0; - function setup() { - var root = d3.select(this), - animate = animation.apply(this, arguments), - tip = root.append("div") - .attr("class", "tooltip"); + if (reduce == null) reduce = pair; - if (animate) { - tip.classed("fade", true); + for (i0 = i = 0; i0 < n0; ++i0) { + for (value0 = values0[i0], i1 = 0; i1 < n1; ++i1, ++i) { + values[i] = reduce(value0, values1[i1]); } - - // TODO "inside" checks? - - tip.append("div") - .attr("class", "tooltip-arrow"); - tip.append("div") - .attr("class", "tooltip-inner"); - - var place = placement.apply(this, arguments); - tip.classed(place, true); - - root.on(over, show); - root.on(out, hide); } - function show() { - var root = d3.select(this), - content = title.apply(this, arguments), - tip = root.select(".tooltip") - .classed("in", true), - markup = html.apply(this, arguments), - innercontent = tip.select(".tooltip-inner")[markup ? "html" : "text"](content), - place = placement.apply(this, arguments), - outer = getPosition(root.node()), - inner = getPosition(tip.node()), - pos; - - switch (place) { - case "top": - pos = {x: outer.x + (outer.w - inner.w) / 2, y: outer.y - inner.h}; - break; - case "right": - pos = {x: outer.x + outer.w, y: outer.y + (outer.h - inner.h) / 2}; - break; - case "left": - pos = {x: outer.x - inner.w, y: outer.y + (outer.h - inner.h) / 2}; - break; - case "bottom": - pos = {x: Math.max(0, outer.x + (outer.w - inner.w) / 2), y: outer.y + outer.h}; - break; - } - - tip.style(pos ? - {left: ~~pos.x + "px", top: ~~pos.y + "px"} : - {left: null, top: null}); + return values; + } - this.tooltipVisible = true; - } + function d3_descending(a, b) { + return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN; + } - function hide() { - d3.select(this).select(".tooltip") - .classed("in", false); + function number(x) { + return x === null ? NaN : +x; + } - this.tooltipVisible = false; + function variance(values, valueof) { + var n = values.length, + m = 0, + i = -1, + mean = 0, + value, + delta, + sum = 0; + + if (valueof == null) { + while (++i < n) { + if (!isNaN(value = number(values[i]))) { + delta = value - mean; + mean += delta / ++m; + sum += delta * (value - mean); + } + } } - function toggle() { - if (this.tooltipVisible) { - hide.apply(this, arguments); - } else { - show.apply(this, arguments); + else { + while (++i < n) { + if (!isNaN(value = number(valueof(values[i], i, values)))) { + delta = value - mean; + mean += delta / ++m; + sum += delta * (value - mean); + } } } - return tooltip; - }; + if (m > 1) return sum / (m - 1); + } - function getPosition(node) { - var mode = d3.select(node).style('position'); - if (mode === 'absolute' || mode === 'static') { - return { - x: node.offsetLeft, - y: node.offsetTop, - w: node.offsetWidth, - h: node.offsetHeight - }; - } else { - return { - x: 0, - y: 0, - w: node.offsetWidth, - h: node.offsetHeight - }; - } + function deviation(array, f) { + var v = variance(array, f); + return v ? Math.sqrt(v) : v; } -})(this); -d3 = (function(){ - var d3 = {version: "3.3.8"}; // semver -d3.ascending = function(a, b) { - return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN; -}; -d3.descending = function(a, b) { - return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN; -}; -d3.min = function(array, f) { - var i = -1, - n = array.length, - a, - b; - if (arguments.length === 1) { - while (++i < n && !((a = array[i]) != null && a <= a)) a = undefined; - while (++i < n) if ((b = array[i]) != null && a > b) a = b; - } else { - while (++i < n && !((a = f.call(array, array[i], i)) != null && a <= a)) a = undefined; - while (++i < n) if ((b = f.call(array, array[i], i)) != null && a > b) a = b; - } - return a; -}; -d3.max = function(array, f) { - var i = -1, - n = array.length, - a, - b; - if (arguments.length === 1) { - while (++i < n && !((a = array[i]) != null && a <= a)) a = undefined; - while (++i < n) if ((b = array[i]) != null && b > a) a = b; - } else { - while (++i < n && !((a = f.call(array, array[i], i)) != null && a <= a)) a = undefined; - while (++i < n) if ((b = f.call(array, array[i], i)) != null && b > a) a = b; - } - return a; -}; -d3.extent = function(array, f) { - var i = -1, - n = array.length, - a, - b, - c; - if (arguments.length === 1) { - while (++i < n && !((a = c = array[i]) != null && a <= a)) a = c = undefined; - while (++i < n) if ((b = array[i]) != null) { - if (a > b) a = b; - if (c < b) c = b; - } - } else { - while (++i < n && !((a = c = f.call(array, array[i], i)) != null && a <= a)) a = undefined; - while (++i < n) if ((b = f.call(array, array[i], i)) != null) { - if (a > b) a = b; - if (c < b) c = b; - } - } - return [a, c]; -}; -d3.sum = function(array, f) { - var s = 0, - n = array.length, - a, - i = -1; - - if (arguments.length === 1) { - while (++i < n) if (!isNaN(a = +array[i])) s += a; - } else { - while (++i < n) if (!isNaN(a = +f.call(array, array[i], i))) s += a; - } - - return s; -}; -function d3_number(x) { - return x != null && !isNaN(x); -} - -d3.mean = function(array, f) { - var n = array.length, - a, - m = 0, - i = -1, - j = 0; - if (arguments.length === 1) { - while (++i < n) if (d3_number(a = array[i])) m += (a - m) / ++j; - } else { - while (++i < n) if (d3_number(a = f.call(array, array[i], i))) m += (a - m) / ++j; - } - return j ? m : undefined; -}; -// R-7 per -d3.quantile = function(values, p) { - var H = (values.length - 1) * p + 1, - h = Math.floor(H), - v = +values[h - 1], - e = H - h; - return e ? v + e * (values[h] - v) : v; -}; - -d3.median = function(array, f) { - if (arguments.length > 1) array = array.map(f); - array = array.filter(d3_number); - return array.length ? d3.quantile(array.sort(d3.ascending), .5) : undefined; -}; -d3.bisector = function(f) { - return { - left: function(a, x, lo, hi) { - if (arguments.length < 3) lo = 0; - if (arguments.length < 4) hi = a.length; - while (lo < hi) { - var mid = lo + hi >>> 1; - if (f.call(a, a[mid], mid) < x) lo = mid + 1; - else hi = mid; - } - return lo; - }, - right: function(a, x, lo, hi) { - if (arguments.length < 3) lo = 0; - if (arguments.length < 4) hi = a.length; - while (lo < hi) { - var mid = lo + hi >>> 1; - if (x < f.call(a, a[mid], mid)) hi = mid; - else lo = mid + 1; + function extent(values, valueof) { + var n = values.length, + i = -1, + value, + min, + max; + + if (valueof == null) { + while (++i < n) { // Find the first comparable value. + if ((value = values[i]) != null && value >= value) { + min = max = value; + while (++i < n) { // Compare the remaining values. + if ((value = values[i]) != null) { + if (min > value) min = value; + if (max < value) max = value; + } + } + } } - return lo; } - }; -}; - -var d3_bisector = d3.bisector(function(d) { return d; }); -d3.bisectLeft = d3_bisector.left; -d3.bisect = d3.bisectRight = d3_bisector.right; -d3.shuffle = function(array) { - var m = array.length, t, i; - while (m) { - i = Math.random() * m-- | 0; - t = array[m], array[m] = array[i], array[i] = t; - } - return array; -}; -d3.permute = function(array, indexes) { - var i = indexes.length, permutes = new Array(i); - while (i--) permutes[i] = array[indexes[i]]; - return permutes; -}; -d3.pairs = function(array) { - var i = 0, n = array.length - 1, p0, p1 = array[0], pairs = new Array(n < 0 ? 0 : n); - while (i < n) pairs[i] = [p0 = p1, p1 = array[++i]]; - return pairs; -}; - -d3.zip = function() { - if (!(n = arguments.length)) return []; - for (var i = -1, m = d3.min(arguments, d3_zipLength), zips = new Array(m); ++i < m;) { - for (var j = -1, n, zip = zips[i] = new Array(n); ++j < n;) { - zip[j] = arguments[j][i]; - } - } - return zips; -}; - -function d3_zipLength(d) { - return d.length; -} - -d3.transpose = function(matrix) { - return d3.zip.apply(d3, matrix); -}; -d3.keys = function(map) { - var keys = []; - for (var key in map) keys.push(key); - return keys; -}; -d3.values = function(map) { - var values = []; - for (var key in map) values.push(map[key]); - return values; -}; -d3.entries = function(map) { - var entries = []; - for (var key in map) entries.push({key: key, value: map[key]}); - return entries; -}; -d3.merge = function(arrays) { - var n = arrays.length, - m, - i = -1, - j = 0, - merged, - array; - - while (++i < n) j += arrays[i].length; - merged = new Array(j); - - while (--n >= 0) { - array = arrays[n]; - m = array.length; - while (--m >= 0) { - merged[--j] = array[m]; - } - } - - return merged; -}; -var abs = Math.abs; - -d3.range = function(start, stop, step) { - if (arguments.length < 3) { - step = 1; - if (arguments.length < 2) { - stop = start; - start = 0; - } - } - if ((stop - start) / step === Infinity) throw new Error("infinite range"); - var range = [], - k = d3_range_integerScale(abs(step)), - i = -1, - j; - start *= k, stop *= k, step *= k; - if (step < 0) while ((j = start + step * ++i) > stop) range.push(j / k); - else while ((j = start + step * ++i) < stop) range.push(j / k); - return range; -}; - -function d3_range_integerScale(x) { - var k = 1; - while (x * k % 1) k *= 10; - return k; -} -function d3_class(ctor, properties) { - try { - for (var key in properties) { - Object.defineProperty(ctor.prototype, key, { - value: properties[key], - enumerable: false - }); - } - } catch (e) { - ctor.prototype = properties; - } -} - -d3.map = function(object) { - var map = new d3_Map; - if (object instanceof d3_Map) object.forEach(function(key, value) { map.set(key, value); }); - else for (var key in object) map.set(key, object[key]); - return map; -}; - -function d3_Map() {} - -d3_class(d3_Map, { - has: function(key) { - return d3_map_prefix + key in this; - }, - get: function(key) { - return this[d3_map_prefix + key]; - }, - set: function(key, value) { - return this[d3_map_prefix + key] = value; - }, - remove: function(key) { - key = d3_map_prefix + key; - return key in this && delete this[key]; - }, - keys: function() { - var keys = []; - this.forEach(function(key) { keys.push(key); }); - return keys; - }, - values: function() { - var values = []; - this.forEach(function(key, value) { values.push(value); }); - return values; - }, - entries: function() { - var entries = []; - this.forEach(function(key, value) { entries.push({key: key, value: value}); }); - return entries; - }, - forEach: function(f) { - for (var key in this) { - if (key.charCodeAt(0) === d3_map_prefixCode) { - f.call(this, key.substring(1), this[key]); + + else { + while (++i < n) { // Find the first comparable value. + if ((value = valueof(values[i], i, values)) != null && value >= value) { + min = max = value; + while (++i < n) { // Compare the remaining values. + if ((value = valueof(values[i], i, values)) != null) { + if (min > value) min = value; + if (max < value) max = value; + } + } + } } } + + return [min, max]; } -}); -var d3_map_prefix = "\0", // prevent collision with built-ins - d3_map_prefixCode = d3_map_prefix.charCodeAt(0); + var array = Array.prototype; + + var slice = array.slice; + var map = array.map; + + function constant(x) { + return function() { + return x; + }; + } -d3.nest = function() { - var nest = {}, - keys = [], - sortKeys = [], - sortValues, - rollup; + function identity(x) { + return x; + } - function map(mapType, array, depth) { - if (depth >= keys.length) return rollup - ? rollup.call(nest, array) : (sortValues - ? array.sort(sortValues) - : array); + function range(start, stop, step) { + start = +start, stop = +stop, step = (n = arguments.length) < 2 ? (stop = start, start = 0, 1) : n < 3 ? 1 : +step; var i = -1, - n = array.length, - key = keys[depth++], - keyValue, - object, - setter, - valuesByKey = new d3_Map, - values; + n = Math.max(0, Math.ceil((stop - start) / step)) | 0, + range = new Array(n); while (++i < n) { - if (values = valuesByKey.get(keyValue = key(object = array[i]))) { - values.push(object); - } else { - valuesByKey.set(keyValue, [object]); - } - } - - if (mapType) { - object = mapType(); - setter = function(keyValue, values) { - object.set(keyValue, map(mapType, values, depth)); - }; - } else { - object = {}; - setter = function(keyValue, values) { - object[keyValue] = map(mapType, values, depth); - }; + range[i] = start + i * step; } - valuesByKey.forEach(setter); - return object; + return range; } - function entries(map, depth) { - if (depth >= keys.length) return map; + var e10 = Math.sqrt(50), + e5 = Math.sqrt(10), + e2 = Math.sqrt(2); - var array = [], - sortKey = sortKeys[depth++]; + function ticks(start, stop, count) { + var reverse, + i = -1, + n, + ticks, + step; + + stop = +stop, start = +start, count = +count; + if (start === stop && count > 0) return [start]; + if (reverse = stop < start) n = start, start = stop, stop = n; + if ((step = tickIncrement(start, stop, count)) === 0 || !isFinite(step)) return []; + + if (step > 0) { + start = Math.ceil(start / step); + stop = Math.floor(stop / step); + ticks = new Array(n = Math.ceil(stop - start + 1)); + while (++i < n) ticks[i] = (start + i) * step; + } else { + start = Math.floor(start * step); + stop = Math.ceil(stop * step); + ticks = new Array(n = Math.ceil(start - stop + 1)); + while (++i < n) ticks[i] = (start - i) / step; + } - map.forEach(function(key, keyMap) { - array.push({key: key, values: entries(keyMap, depth)}); - }); + if (reverse) ticks.reverse(); - return sortKey - ? array.sort(function(a, b) { return sortKey(a.key, b.key); }) - : array; + return ticks; } - nest.map = function(array, mapType) { - return map(mapType, array, 0); - }; - - nest.entries = function(array) { - return entries(map(d3.map, array, 0), 0); - }; + function tickIncrement(start, stop, count) { + var step = (stop - start) / Math.max(0, count), + power = Math.floor(Math.log(step) / Math.LN10), + error = step / Math.pow(10, power); + return power >= 0 + ? (error >= e10 ? 10 : error >= e5 ? 5 : error >= e2 ? 2 : 1) * Math.pow(10, power) + : -Math.pow(10, -power) / (error >= e10 ? 10 : error >= e5 ? 5 : error >= e2 ? 2 : 1); + } - nest.key = function(d) { - keys.push(d); - return nest; - }; + function tickStep(start, stop, count) { + var step0 = Math.abs(stop - start) / Math.max(0, count), + step1 = Math.pow(10, Math.floor(Math.log(step0) / Math.LN10)), + error = step0 / step1; + if (error >= e10) step1 *= 10; + else if (error >= e5) step1 *= 5; + else if (error >= e2) step1 *= 2; + return stop < start ? -step1 : step1; + } - // Specifies the order for the most-recently specified key. - // Note: only applies to entries. Map keys are unordered! - nest.sortKeys = function(order) { - sortKeys[keys.length - 1] = order; - return nest; - }; + function sturges(values) { + return Math.ceil(Math.log(values.length) / Math.LN2) + 1; + } - // Specifies the order for leaf values. - // Applies to both maps and entries array. - nest.sortValues = function(order) { - sortValues = order; - return nest; - }; + function histogram() { + var value = identity, + domain = extent, + threshold = sturges; - nest.rollup = function(f) { - rollup = f; - return nest; - }; + function histogram(data) { + var i, + n = data.length, + x, + values = new Array(n); - return nest; -}; + for (i = 0; i < n; ++i) { + values[i] = value(data[i], i, data); + } -d3.set = function(array) { - var set = new d3_Set; - if (array) for (var i = 0, n = array.length; i < n; ++i) set.add(array[i]); - return set; -}; + var xz = domain(values), + x0 = xz[0], + x1 = xz[1], + tz = threshold(values, x0, x1); -function d3_Set() {} + // Convert number of thresholds into uniform thresholds. + if (!Array.isArray(tz)) { + tz = tickStep(x0, x1, tz); + tz = range(Math.ceil(x0 / tz) * tz, Math.floor(x1 / tz) * tz, tz); // exclusive + } -d3_class(d3_Set, { - has: function(value) { - return d3_map_prefix + value in this; - }, - add: function(value) { - this[d3_map_prefix + value] = true; - return value; - }, - remove: function(value) { - value = d3_map_prefix + value; - return value in this && delete this[value]; - }, - values: function() { - var values = []; - this.forEach(function(value) { - values.push(value); - }); - return values; - }, - forEach: function(f) { - for (var value in this) { - if (value.charCodeAt(0) === d3_map_prefixCode) { - f.call(this, value.substring(1)); - } - } - } -}); -d3.behavior = {}; -var d3_arraySlice = [].slice, - d3_array = function(list) { return d3_arraySlice.call(list); }; // conversion for NodeLists - -var d3_document = document, - d3_documentElement = d3_document.documentElement, - d3_window = window; - -// Redefine d3_array if the browser doesn’t support slice-based conversion. -try { - d3_array(d3_documentElement.childNodes)[0].nodeType; -} catch(e) { - d3_array = function(list) { - var i = list.length, array = new Array(i); - while (i--) array[i] = list[i]; - return array; - }; -} -// Copies a variable number of methods from source to target. -d3.rebind = function(target, source) { - var i = 1, n = arguments.length, method; - while (++i < n) target[method = arguments[i]] = d3_rebind(target, source, source[method]); - return target; -}; - -// Method is assumed to be a standard D3 getter-setter: -// If passed with no arguments, gets the value. -// If passed with arguments, sets the value and returns the target. -function d3_rebind(target, source, method) { - return function() { - var value = method.apply(source, arguments); - return value === source ? target : value; - }; -} + // Remove any thresholds outside the domain. + var m = tz.length; + while (tz[0] <= x0) tz.shift(), --m; + while (tz[m - 1] > x1) tz.pop(), --m; -function d3_vendorSymbol(object, name) { - if (name in object) return name; - name = name.charAt(0).toUpperCase() + name.substring(1); - for (var i = 0, n = d3_vendorPrefixes.length; i < n; ++i) { - var prefixName = d3_vendorPrefixes[i] + name; - if (prefixName in object) return prefixName; - } -} + var bins = new Array(m + 1), + bin; -var d3_vendorPrefixes = ["webkit", "ms", "moz", "Moz", "o", "O"]; -function d3_noop() {} + // Initialize bins. + for (i = 0; i <= m; ++i) { + bin = bins[i] = []; + bin.x0 = i > 0 ? tz[i - 1] : x0; + bin.x1 = i < m ? tz[i] : x1; + } -d3.dispatch = function() { - var dispatch = new d3_dispatch, - i = -1, - n = arguments.length; - while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch); - return dispatch; -}; + // Assign data to bins by value, ignoring any outside the domain. + for (i = 0; i < n; ++i) { + x = values[i]; + if (x0 <= x && x <= x1) { + bins[bisectRight(tz, x, 0, m)].push(data[i]); + } + } -function d3_dispatch() {} + return bins; + } -d3_dispatch.prototype.on = function(type, listener) { - var i = type.indexOf("."), - name = ""; + histogram.value = function(_) { + return arguments.length ? (value = typeof _ === "function" ? _ : constant(_), histogram) : value; + }; - // Extract optional namespace, e.g., "click.foo" - if (i >= 0) { - name = type.substring(i + 1); - type = type.substring(0, i); - } + histogram.domain = function(_) { + return arguments.length ? (domain = typeof _ === "function" ? _ : constant([_[0], _[1]]), histogram) : domain; + }; - if (type) return arguments.length < 2 - ? this[type].on(name) - : this[type].on(name, listener); + histogram.thresholds = function(_) { + return arguments.length ? (threshold = typeof _ === "function" ? _ : Array.isArray(_) ? constant(slice.call(_)) : constant(_), histogram) : threshold; + }; - if (arguments.length === 2) { - if (listener == null) for (type in this) { - if (this.hasOwnProperty(type)) this[type].on(name, null); - } - return this; + return histogram; } -}; -function d3_dispatch_event(dispatch) { - var listeners = [], - listenerByName = new d3_Map; + function quantile(values, p, valueof) { + if (valueof == null) valueof = number; + if (!(n = values.length)) return; + if ((p = +p) <= 0 || n < 2) return +valueof(values[0], 0, values); + if (p >= 1) return +valueof(values[n - 1], n - 1, values); + var n, + i = (n - 1) * p, + i0 = Math.floor(i), + value0 = +valueof(values[i0], i0, values), + value1 = +valueof(values[i0 + 1], i0 + 1, values); + return value0 + (value1 - value0) * (i - i0); + } - function event() { - var z = listeners, // defensive reference - i = -1, - n = z.length, - l; - while (++i < n) if (l = z[i].on) l.apply(this, arguments); - return dispatch; + function freedmanDiaconis(values, min, max) { + values = map.call(values, number).sort(ascending); + return Math.ceil((max - min) / (2 * (quantile(values, 0.75) - quantile(values, 0.25)) * Math.pow(values.length, -1 / 3))); } - event.on = function(name, listener) { - var l = listenerByName.get(name), - i; + function scott(values, min, max) { + return Math.ceil((max - min) / (3.5 * deviation(values) * Math.pow(values.length, -1 / 3))); + } - // return the current listener, if any - if (arguments.length < 2) return l && l.on; + function max(values, valueof) { + var n = values.length, + i = -1, + value, + max; + + if (valueof == null) { + while (++i < n) { // Find the first comparable value. + if ((value = values[i]) != null && value >= value) { + max = value; + while (++i < n) { // Compare the remaining values. + if ((value = values[i]) != null && value > max) { + max = value; + } + } + } + } + } - // remove the old listener, if any (with copy-on-write) - if (l) { - l.on = null; - listeners = listeners.slice(0, i = listeners.indexOf(l)).concat(listeners.slice(i + 1)); - listenerByName.remove(name); + else { + while (++i < n) { // Find the first comparable value. + if ((value = valueof(values[i], i, values)) != null && value >= value) { + max = value; + while (++i < n) { // Compare the remaining values. + if ((value = valueof(values[i], i, values)) != null && value > max) { + max = value; + } + } + } + } } - // add the new listener, if any - if (listener) listeners.push(listenerByName.set(name, {on: listener})); + return max; + } - return dispatch; - }; + function mean(values, valueof) { + var n = values.length, + m = n, + i = -1, + value, + sum = 0; - return event; -} - -d3.event = null; - -function d3_eventPreventDefault() { - d3.event.preventDefault(); -} - -function d3_eventCancel() { - d3.event.preventDefault(); - d3.event.stopPropagation(); -} - -function d3_eventSource() { - var e = d3.event, s; - while (s = e.sourceEvent) e = s; - return e; -} - -// Like d3.dispatch, but for custom events abstracting native UI events. These -// events have a target component (such as a brush), a target element (such as -// the svg:g element containing the brush) and the standard arguments `d` (the -// target element's data) and `i` (the selection index of the target element). -function d3_eventDispatch(target) { - var dispatch = new d3_dispatch, - i = 0, - n = arguments.length; - - while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch); - - // Creates a dispatch context for the specified `thiz` (typically, the target - // DOM element that received the source event) and `argumentz` (typically, the - // data `d` and index `i` of the target element). The returned function can be - // used to dispatch an event to any registered listeners; the function takes a - // single argument as input, being the event to dispatch. The event must have - // a "type" attribute which corresponds to a type registered in the - // constructor. This context will automatically populate the "sourceEvent" and - // "target" attributes of the event, as well as setting the `d3.event` global - // for the duration of the notification. - dispatch.of = function(thiz, argumentz) { - return function(e1) { - try { - var e0 = - e1.sourceEvent = d3.event; - e1.target = target; - d3.event = e1; - dispatch[e1.type].apply(thiz, argumentz); - } finally { - d3.event = e0; + if (valueof == null) { + while (++i < n) { + if (!isNaN(value = number(values[i]))) sum += value; + else --m; } - }; - }; + } - return dispatch; -} -d3.requote = function(s) { - return s.replace(d3_requote_re, "\\$&"); -}; - -var d3_requote_re = /[\\\^\$\*\+\?\|\[\]\(\)\.\{\}]/g; -var d3_subclass = {}.__proto__? - -// Until ECMAScript supports array subclassing, prototype injection works well. -function(object, prototype) { - object.__proto__ = prototype; -}: - -// And if your browser doesn't support __proto__, we'll use direct extension. -function(object, prototype) { - for (var property in prototype) object[property] = prototype[property]; -}; - -function d3_selection(groups) { - d3_subclass(groups, d3_selectionPrototype); - return groups; -} - -var d3_select = function(s, n) { return n.querySelector(s); }, - d3_selectAll = function(s, n) { return n.querySelectorAll(s); }, - d3_selectMatcher = d3_documentElement[d3_vendorSymbol(d3_documentElement, "matchesSelector")], - d3_selectMatches = function(n, s) { return d3_selectMatcher.call(n, s); }; - -// Prefer Sizzle, if available. -if (typeof Sizzle === "function") { - d3_select = function(s, n) { return Sizzle(s, n)[0] || null; }; - d3_selectAll = function(s, n) { return Sizzle.uniqueSort(Sizzle(s, n)); }; - d3_selectMatches = Sizzle.matchesSelector; -} - -d3.selection = function() { - return d3_selectionRoot; -}; - -var d3_selectionPrototype = d3.selection.prototype = []; - - -d3_selectionPrototype.select = function(selector) { - var subgroups = [], - subgroup, - subnode, - group, - node; - - selector = d3_selection_selector(selector); - - for (var j = -1, m = this.length; ++j < m;) { - subgroups.push(subgroup = []); - subgroup.parentNode = (group = this[j]).parentNode; - for (var i = -1, n = group.length; ++i < n;) { - if (node = group[i]) { - subgroup.push(subnode = selector.call(node, node.__data__, i, j)); - if (subnode && "__data__" in node) subnode.__data__ = node.__data__; - } else { - subgroup.push(null); + else { + while (++i < n) { + if (!isNaN(value = number(valueof(values[i], i, values)))) sum += value; + else --m; } } - } - return d3_selection(subgroups); -}; - -function d3_selection_selector(selector) { - return typeof selector === "function" ? selector : function() { - return d3_select(selector, this); - }; -} + if (m) return sum / m; + } -d3_selectionPrototype.selectAll = function(selector) { - var subgroups = [], - subgroup, - node; + function d3_median(values, valueof) { + var n = values.length, + i = -1, + value, + numbers = []; - selector = d3_selection_selectorAll(selector); + if (valueof == null) { + while (++i < n) { + if (!isNaN(value = number(values[i]))) { + numbers.push(value); + } + } + } - for (var j = -1, m = this.length; ++j < m;) { - for (var group = this[j], i = -1, n = group.length; ++i < n;) { - if (node = group[i]) { - subgroups.push(subgroup = d3_array(selector.call(node, node.__data__, i, j))); - subgroup.parentNode = node; + else { + while (++i < n) { + if (!isNaN(value = number(valueof(values[i], i, values)))) { + numbers.push(value); + } } } - } - return d3_selection(subgroups); -}; + return quantile(numbers.sort(ascending), 0.5); + } -function d3_selection_selectorAll(selector) { - return typeof selector === "function" ? selector : function() { - return d3_selectAll(selector, this); - }; -} -var d3_nsPrefix = { - svg: "http://www.w3.org/2000/svg", - xhtml: "http://www.w3.org/1999/xhtml", - xlink: "http://www.w3.org/1999/xlink", - xml: "http://www.w3.org/XML/1998/namespace", - xmlns: "http://www.w3.org/2000/xmlns/" -}; - -d3.ns = { - prefix: d3_nsPrefix, - qualify: function(name) { - var i = name.indexOf(":"), - prefix = name; - if (i >= 0) { - prefix = name.substring(0, i); - name = name.substring(i + 1); - } - return d3_nsPrefix.hasOwnProperty(prefix) - ? {space: d3_nsPrefix[prefix], local: name} - : name; - } -}; - -d3_selectionPrototype.attr = function(name, value) { - if (arguments.length < 2) { - - // For attr(string), return the attribute value for the first node. - if (typeof name === "string") { - var node = this.node(); - name = d3.ns.qualify(name); - return name.local - ? node.getAttributeNS(name.space, name.local) - : node.getAttribute(name); + function merge(arrays) { + var n = arrays.length, + m, + i = -1, + j = 0, + merged, + array; + + while (++i < n) j += arrays[i].length; + merged = new Array(j); + + while (--n >= 0) { + array = arrays[n]; + m = array.length; + while (--m >= 0) { + merged[--j] = array[m]; + } } - // For attr(object), the object specifies the names and values of the - // attributes to set or remove. The values may be functions that are - // evaluated for each element. - for (value in name) this.each(d3_selection_attr(value, name[value])); - return this; + return merged; } - return this.each(d3_selection_attr(name, value)); -}; - -function d3_selection_attr(name, value) { - name = d3.ns.qualify(name); + function min(values, valueof) { + var n = values.length, + i = -1, + value, + min; + + if (valueof == null) { + while (++i < n) { // Find the first comparable value. + if ((value = values[i]) != null && value >= value) { + min = value; + while (++i < n) { // Compare the remaining values. + if ((value = values[i]) != null && min > value) { + min = value; + } + } + } + } + } - // For attr(string, null), remove the attribute with the specified name. - function attrNull() { - this.removeAttribute(name); - } - function attrNullNS() { - this.removeAttributeNS(name.space, name.local); - } + else { + while (++i < n) { // Find the first comparable value. + if ((value = valueof(values[i], i, values)) != null && value >= value) { + min = value; + while (++i < n) { // Compare the remaining values. + if ((value = valueof(values[i], i, values)) != null && min > value) { + min = value; + } + } + } + } + } - // For attr(string, string), set the attribute with the specified name. - function attrConstant() { - this.setAttribute(name, value); - } - function attrConstantNS() { - this.setAttributeNS(name.space, name.local, value); + return min; } - // For attr(string, function), evaluate the function for each element, and set - // or remove the attribute as appropriate. - function attrFunction() { - var x = value.apply(this, arguments); - if (x == null) this.removeAttribute(name); - else this.setAttribute(name, x); - } - function attrFunctionNS() { - var x = value.apply(this, arguments); - if (x == null) this.removeAttributeNS(name.space, name.local); - else this.setAttributeNS(name.space, name.local, x); + function permute(array, indexes) { + var i = indexes.length, permutes = new Array(i); + while (i--) permutes[i] = array[indexes[i]]; + return permutes; } - return value == null - ? (name.local ? attrNullNS : attrNull) : (typeof value === "function" - ? (name.local ? attrFunctionNS : attrFunction) - : (name.local ? attrConstantNS : attrConstant)); -} -function d3_collapse(s) { - return s.trim().replace(/\s+/g, " "); -} + function scan(values, compare) { + if (!(n = values.length)) return; + var n, + i = 0, + j = 0, + xi, + xj = values[j]; -d3_selectionPrototype.classed = function(name, value) { - if (arguments.length < 2) { + if (compare == null) compare = ascending; - // For classed(string), return true only if the first node has the specified - // class or classes. Note that even if the browser supports DOMTokenList, it - // probably doesn't support it on SVG elements (which can be animated). - if (typeof name === "string") { - var node = this.node(), - n = (name = name.trim().split(/^|\s+/g)).length, - i = -1; - if (value = node.classList) { - while (++i < n) if (!value.contains(name[i])) return false; - } else { - value = node.getAttribute("class"); - while (++i < n) if (!d3_selection_classedRe(name[i]).test(value)) return false; + while (++i < n) { + if (compare(xi = values[i], xj) < 0 || compare(xj, xj) !== 0) { + xj = xi, j = i; } - return true; } - // For classed(object), the object specifies the names of classes to add or - // remove. The values may be functions that are evaluated for each element. - for (value in name) this.each(d3_selection_classed(value, name[value])); - return this; + if (compare(xj, xj) === 0) return j; } - // Otherwise, both a name and a value are specified, and are handled as below. - return this.each(d3_selection_classed(name, value)); -}; - -function d3_selection_classedRe(name) { - return new RegExp("(?:^|\\s+)" + d3.requote(name) + "(?:\\s+|$)", "g"); -} + function shuffle(array, i0, i1) { + var m = (i1 == null ? array.length : i1) - (i0 = i0 == null ? 0 : +i0), + t, + i; -// Multiple class names are allowed (e.g., "foo bar"). -function d3_selection_classed(name, value) { - name = name.trim().split(/\s+/).map(d3_selection_classedName); - var n = name.length; + while (m) { + i = Math.random() * m-- | 0; + t = array[m + i0]; + array[m + i0] = array[i + i0]; + array[i + i0] = t; + } - function classedConstant() { - var i = -1; - while (++i < n) name[i](this, value); + return array; } - // When the value is a function, the function is still evaluated only once per - // element even if there are multiple class names. - function classedFunction() { - var i = -1, x = value.apply(this, arguments); - while (++i < n) name[i](this, x); - } + function sum(values, valueof) { + var n = values.length, + i = -1, + value, + sum = 0; - return typeof value === "function" - ? classedFunction - : classedConstant; -} + if (valueof == null) { + while (++i < n) { + if (value = +values[i]) sum += value; // Note: zero and null are equivalent. + } + } -function d3_selection_classedName(name) { - var re = d3_selection_classedRe(name); - return function(node, value) { - if (c = node.classList) return value ? c.add(name) : c.remove(name); - var c = node.getAttribute("class") || ""; - if (value) { - re.lastIndex = 0; - if (!re.test(c)) node.setAttribute("class", d3_collapse(c + " " + name)); - } else { - node.setAttribute("class", d3_collapse(c.replace(re, " "))); + else { + while (++i < n) { + if (value = +valueof(values[i], i, values)) sum += value; + } } - }; -} - -d3_selectionPrototype.style = function(name, value, priority) { - var n = arguments.length; - if (n < 3) { - - // For style(object) or style(object, string), the object specifies the - // names and values of the attributes to set or remove. The values may be - // functions that are evaluated for each element. The optional string - // specifies the priority. - if (typeof name !== "string") { - if (n < 2) value = ""; - for (priority in name) this.each(d3_selection_style(priority, name[priority], value)); - return this; + + return sum; + } + + function transpose(matrix) { + if (!(n = matrix.length)) return []; + for (var i = -1, m = min(matrix, length), transpose = new Array(m); ++i < m;) { + for (var j = -1, n, row = transpose[i] = new Array(n); ++j < n;) { + row[j] = matrix[j][i]; + } } + return transpose; + } + + function length(d) { + return d.length; + } + + function zip() { + return transpose(arguments); + } - // For style(string), return the computed style value for the first node. - if (n < 2) return d3_window.getComputedStyle(this.node(), null).getPropertyValue(name); + var slice$1 = Array.prototype.slice; - // For style(string, string) or style(string, function), use the default - // priority. The priority is ignored for style(string, null). - priority = ""; + function identity$1(x) { + return x; } - // Otherwise, a name, value and priority are specified, and handled as below. - return this.each(d3_selection_style(name, value, priority)); -}; + var top = 1, + right = 2, + bottom = 3, + left = 4, + epsilon = 1e-6; -function d3_selection_style(name, value, priority) { + function translateX(x) { + return "translate(" + (x + 0.5) + ",0)"; + } - // For style(name, null) or style(name, null, priority), remove the style - // property with the specified name. The priority is ignored. - function styleNull() { - this.style.removeProperty(name); + function translateY(y) { + return "translate(0," + (y + 0.5) + ")"; } - // For style(name, string) or style(name, string, priority), set the style - // property with the specified name, using the specified priority. - function styleConstant() { - this.style.setProperty(name, value, priority); + function number$1(scale) { + return function(d) { + return +scale(d); + }; } - // For style(name, function) or style(name, function, priority), evaluate the - // function for each element, and set or remove the style property as - // appropriate. When setting, use the specified priority. - function styleFunction() { - var x = value.apply(this, arguments); - if (x == null) this.style.removeProperty(name); - else this.style.setProperty(name, x, priority); + function center(scale) { + var offset = Math.max(0, scale.bandwidth() - 1) / 2; // Adjust for 0.5px offset. + if (scale.round()) offset = Math.round(offset); + return function(d) { + return +scale(d) + offset; + }; } - return value == null - ? styleNull : (typeof value === "function" - ? styleFunction : styleConstant); -} + function entering() { + return !this.__axis; + } -d3_selectionPrototype.property = function(name, value) { - if (arguments.length < 2) { + function axis(orient, scale) { + var tickArguments = [], + tickValues = null, + tickFormat = null, + tickSizeInner = 6, + tickSizeOuter = 6, + tickPadding = 3, + k = orient === top || orient === left ? -1 : 1, + x = orient === left || orient === right ? "x" : "y", + transform = orient === top || orient === bottom ? translateX : translateY; + + function axis(context) { + var values = tickValues == null ? (scale.ticks ? scale.ticks.apply(scale, tickArguments) : scale.domain()) : tickValues, + format = tickFormat == null ? (scale.tickFormat ? scale.tickFormat.apply(scale, tickArguments) : identity$1) : tickFormat, + spacing = Math.max(tickSizeInner, 0) + tickPadding, + range = scale.range(), + range0 = +range[0] + 0.5, + range1 = +range[range.length - 1] + 0.5, + position = (scale.bandwidth ? center : number$1)(scale.copy()), + selection = context.selection ? context.selection() : context, + path = selection.selectAll(".domain").data([null]), + tick = selection.selectAll(".tick").data(values, scale).order(), + tickExit = tick.exit(), + tickEnter = tick.enter().append("g").attr("class", "tick"), + line = tick.select("line"), + text = tick.select("text"); + + path = path.merge(path.enter().insert("path", ".tick") + .attr("class", "domain") + .attr("stroke", "#000")); + + tick = tick.merge(tickEnter); + + line = line.merge(tickEnter.append("line") + .attr("stroke", "#000") + .attr(x + "2", k * tickSizeInner)); + + text = text.merge(tickEnter.append("text") + .attr("fill", "#000") + .attr(x, k * spacing) + .attr("dy", orient === top ? "0em" : orient === bottom ? "0.71em" : "0.32em")); + + if (context !== selection) { + path = path.transition(context); + tick = tick.transition(context); + line = line.transition(context); + text = text.transition(context); + + tickExit = tickExit.transition(context) + .attr("opacity", epsilon) + .attr("transform", function(d) { return isFinite(d = position(d)) ? transform(d) : this.getAttribute("transform"); }); + + tickEnter + .attr("opacity", epsilon) + .attr("transform", function(d) { var p = this.parentNode.__axis; return transform(p && isFinite(p = p(d)) ? p : position(d)); }); + } - // For property(string), return the property value for the first node. - if (typeof name === "string") return this.node()[name]; + tickExit.remove(); - // For property(object), the object specifies the names and values of the - // properties to set or remove. The values may be functions that are - // evaluated for each element. - for (value in name) this.each(d3_selection_property(value, name[value])); - return this; - } + path + .attr("d", orient === left || orient == right + ? "M" + k * tickSizeOuter + "," + range0 + "H0.5V" + range1 + "H" + k * tickSizeOuter + : "M" + range0 + "," + k * tickSizeOuter + "V0.5H" + range1 + "V" + k * tickSizeOuter); - // Otherwise, both a name and a value are specified, and are handled as below. - return this.each(d3_selection_property(name, value)); -}; + tick + .attr("opacity", 1) + .attr("transform", function(d) { return transform(position(d)); }); -function d3_selection_property(name, value) { + line + .attr(x + "2", k * tickSizeInner); - // For property(name, null), remove the property with the specified name. - function propertyNull() { - delete this[name]; - } + text + .attr(x, k * spacing) + .text(format); - // For property(name, string), set the property with the specified name. - function propertyConstant() { - this[name] = value; + selection.filter(entering) + .attr("fill", "none") + .attr("font-size", 10) + .attr("font-family", "sans-serif") + .attr("text-anchor", orient === right ? "start" : orient === left ? "end" : "middle"); + + selection + .each(function() { this.__axis = position; }); + } + + axis.scale = function(_) { + return arguments.length ? (scale = _, axis) : scale; + }; + + axis.ticks = function() { + return tickArguments = slice$1.call(arguments), axis; + }; + + axis.tickArguments = function(_) { + return arguments.length ? (tickArguments = _ == null ? [] : slice$1.call(_), axis) : tickArguments.slice(); + }; + + axis.tickValues = function(_) { + return arguments.length ? (tickValues = _ == null ? null : slice$1.call(_), axis) : tickValues && tickValues.slice(); + }; + + axis.tickFormat = function(_) { + return arguments.length ? (tickFormat = _, axis) : tickFormat; + }; + + axis.tickSize = function(_) { + return arguments.length ? (tickSizeInner = tickSizeOuter = +_, axis) : tickSizeInner; + }; + + axis.tickSizeInner = function(_) { + return arguments.length ? (tickSizeInner = +_, axis) : tickSizeInner; + }; + + axis.tickSizeOuter = function(_) { + return arguments.length ? (tickSizeOuter = +_, axis) : tickSizeOuter; + }; + + axis.tickPadding = function(_) { + return arguments.length ? (tickPadding = +_, axis) : tickPadding; + }; + + return axis; } - // For property(name, function), evaluate the function for each element, and - // set or remove the property as appropriate. - function propertyFunction() { - var x = value.apply(this, arguments); - if (x == null) delete this[name]; - else this[name] = x; + function axisTop(scale) { + return axis(top, scale); } - return value == null - ? propertyNull : (typeof value === "function" - ? propertyFunction : propertyConstant); -} + function axisRight(scale) { + return axis(right, scale); + } -d3_selectionPrototype.text = function(value) { - return arguments.length - ? this.each(typeof value === "function" - ? function() { var v = value.apply(this, arguments); this.textContent = v == null ? "" : v; } : value == null - ? function() { if (this.textContent !== "") this.textContent = ""; } - : function() { if (this.textContent !== value) this.textContent = value; }) - : this.node().textContent; -}; + function axisBottom(scale) { + return axis(bottom, scale); + } -d3_selectionPrototype.html = function(value) { - return arguments.length - ? this.each(typeof value === "function" - ? function() { var v = value.apply(this, arguments); this.innerHTML = v == null ? "" : v; } : value == null - ? function() { this.innerHTML = ""; } - : function() { this.innerHTML = value; }) - : this.node().innerHTML; -}; + function axisLeft(scale) { + return axis(left, scale); + } -d3_selectionPrototype.append = function(name) { - name = d3_selection_creator(name); - return this.select(function() { - return this.appendChild(name.apply(this, arguments)); - }); -}; - -function d3_selection_creator(name) { - return typeof name === "function" ? name - : (name = d3.ns.qualify(name)).local ? function() { return this.ownerDocument.createElementNS(name.space, name.local); } - : function() { return this.ownerDocument.createElementNS(this.namespaceURI, name); }; -} - -d3_selectionPrototype.insert = function(name, before) { - name = d3_selection_creator(name); - before = d3_selection_selector(before); - return this.select(function() { - return this.insertBefore(name.apply(this, arguments), before.apply(this, arguments) || null); - }); -}; + var noop = {value: function() {}}; -// TODO remove(selector)? -// TODO remove(node)? -// TODO remove(function)? -d3_selectionPrototype.remove = function() { - return this.each(function() { - var parent = this.parentNode; - if (parent) parent.removeChild(this); - }); -}; + function dispatch() { + for (var i = 0, n = arguments.length, _ = {}, t; i < n; ++i) { + if (!(t = arguments[i] + "") || (t in _)) throw new Error("illegal type: " + t); + _[t] = []; + } + return new Dispatch(_); + } -d3_selectionPrototype.data = function(value, key) { - var i = -1, - n = this.length, - group, - node; + function Dispatch(_) { + this._ = _; + } - // If no value is specified, return the first value. - if (!arguments.length) { - value = new Array(n = (group = this[0]).length); - while (++i < n) { - if (node = group[i]) { - value[i] = node.__data__; - } - } - return value; + function parseTypenames(typenames, types) { + return typenames.trim().split(/^|\s+/).map(function(t) { + var name = "", i = t.indexOf("."); + if (i >= 0) name = t.slice(i + 1), t = t.slice(0, i); + if (t && !types.hasOwnProperty(t)) throw new Error("unknown type: " + t); + return {type: t, name: name}; + }); } - function bind(group, groupData) { - var i, - n = group.length, - m = groupData.length, - n0 = Math.min(n, m), - updateNodes = new Array(m), - enterNodes = new Array(m), - exitNodes = new Array(n), - node, - nodeData; - - if (key) { - var nodeByKeyValue = new d3_Map, - dataByKeyValue = new d3_Map, - keyValues = [], - keyValue; - - for (i = -1; ++i < n;) { - keyValue = key.call(node = group[i], node.__data__, i); - if (nodeByKeyValue.has(keyValue)) { - exitNodes[i] = node; // duplicate selection key - } else { - nodeByKeyValue.set(keyValue, node); - } - keyValues.push(keyValue); + Dispatch.prototype = dispatch.prototype = { + constructor: Dispatch, + on: function(typename, callback) { + var _ = this._, + T = parseTypenames(typename + "", _), + t, + i = -1, + n = T.length; + + // If no callback was specified, return the callback of the given type and name. + if (arguments.length < 2) { + while (++i < n) if ((t = (typename = T[i]).type) && (t = get(_[t], typename.name))) return t; + return; } - for (i = -1; ++i < m;) { - keyValue = key.call(groupData, nodeData = groupData[i], i); - if (node = nodeByKeyValue.get(keyValue)) { - updateNodes[i] = node; - node.__data__ = nodeData; - } else if (!dataByKeyValue.has(keyValue)) { // no duplicate data key - enterNodes[i] = d3_selection_dataNode(nodeData); - } - dataByKeyValue.set(keyValue, nodeData); - nodeByKeyValue.remove(keyValue); + // If a type was specified, set the callback for the given type and name. + // Otherwise, if a null callback was specified, remove callbacks of the given name. + if (callback != null && typeof callback !== "function") throw new Error("invalid callback: " + callback); + while (++i < n) { + if (t = (typename = T[i]).type) _[t] = set(_[t], typename.name, callback); + else if (callback == null) for (t in _) _[t] = set(_[t], typename.name, null); } - for (i = -1; ++i < n;) { - if (nodeByKeyValue.has(keyValues[i])) { - exitNodes[i] = group[i]; - } - } - } else { - for (i = -1; ++i < n0;) { - node = group[i]; - nodeData = groupData[i]; - if (node) { - node.__data__ = nodeData; - updateNodes[i] = node; - } else { - enterNodes[i] = d3_selection_dataNode(nodeData); - } - } - for (; i < m; ++i) { - enterNodes[i] = d3_selection_dataNode(groupData[i]); + return this; + }, + copy: function() { + var copy = {}, _ = this._; + for (var t in _) copy[t] = _[t].slice(); + return new Dispatch(copy); + }, + call: function(type, that) { + if ((n = arguments.length - 2) > 0) for (var args = new Array(n), i = 0, n, t; i < n; ++i) args[i] = arguments[i + 2]; + if (!this._.hasOwnProperty(type)) throw new Error("unknown type: " + type); + for (t = this._[type], i = 0, n = t.length; i < n; ++i) t[i].value.apply(that, args); + }, + apply: function(type, that, args) { + if (!this._.hasOwnProperty(type)) throw new Error("unknown type: " + type); + for (var t = this._[type], i = 0, n = t.length; i < n; ++i) t[i].value.apply(that, args); + } + }; + + function get(type, name) { + for (var i = 0, n = type.length, c; i < n; ++i) { + if ((c = type[i]).name === name) { + return c.value; } - for (; i < n; ++i) { - exitNodes[i] = group[i]; + } + } + + function set(type, name, callback) { + for (var i = 0, n = type.length; i < n; ++i) { + if (type[i].name === name) { + type[i] = noop, type = type.slice(0, i).concat(type.slice(i + 1)); + break; } } + if (callback != null) type.push({name: name, value: callback}); + return type; + } - enterNodes.update - = updateNodes; + var xhtml = "http://www.w3.org/1999/xhtml"; - enterNodes.parentNode - = updateNodes.parentNode - = exitNodes.parentNode - = group.parentNode; + var namespaces = { + svg: "http://www.w3.org/2000/svg", + xhtml: xhtml, + xlink: "http://www.w3.org/1999/xlink", + xml: "http://www.w3.org/XML/1998/namespace", + xmlns: "http://www.w3.org/2000/xmlns/" + }; - enter.push(enterNodes); - update.push(updateNodes); - exit.push(exitNodes); + function namespace(name) { + var prefix = name += "", i = prefix.indexOf(":"); + if (i >= 0 && (prefix = name.slice(0, i)) !== "xmlns") name = name.slice(i + 1); + return namespaces.hasOwnProperty(prefix) ? {space: namespaces[prefix], local: name} : name; } - var enter = d3_selection_enter([]), - update = d3_selection([]), - exit = d3_selection([]); - - if (typeof value === "function") { - while (++i < n) { - bind(group = this[i], value.call(group, group.parentNode.__data__, i)); - } - } else { - while (++i < n) { - bind(group = this[i], value); - } + function creatorInherit(name) { + return function() { + var document = this.ownerDocument, + uri = this.namespaceURI; + return uri === xhtml && document.documentElement.namespaceURI === xhtml + ? document.createElement(name) + : document.createElementNS(uri, name); + }; } - update.enter = function() { return enter; }; - update.exit = function() { return exit; }; - return update; -}; + function creatorFixed(fullname) { + return function() { + return this.ownerDocument.createElementNS(fullname.space, fullname.local); + }; + } -function d3_selection_dataNode(data) { - return {__data__: data}; -} + function creator(name) { + var fullname = namespace(name); + return (fullname.local + ? creatorFixed + : creatorInherit)(fullname); + } -d3_selectionPrototype.datum = function(value) { - return arguments.length - ? this.property("__data__", value) - : this.property("__data__"); -}; + function none() {} -d3_selectionPrototype.filter = function(filter) { - var subgroups = [], - subgroup, - group, - node; + function selector(selector) { + return selector == null ? none : function() { + return this.querySelector(selector); + }; + } - if (typeof filter !== "function") filter = d3_selection_filter(filter); + function selection_select(select) { + if (typeof select !== "function") select = selector(select); - for (var j = 0, m = this.length; j < m; j++) { - subgroups.push(subgroup = []); - subgroup.parentNode = (group = this[j]).parentNode; - for (var i = 0, n = group.length; i < n; i++) { - if ((node = group[i]) && filter.call(node, node.__data__, i)) { - subgroup.push(node); + for (var groups = this._groups, m = groups.length, subgroups = new Array(m), j = 0; j < m; ++j) { + for (var group = groups[j], n = group.length, subgroup = subgroups[j] = new Array(n), node, subnode, i = 0; i < n; ++i) { + if ((node = group[i]) && (subnode = select.call(node, node.__data__, i, group))) { + if ("__data__" in node) subnode.__data__ = node.__data__; + subgroup[i] = subnode; + } } } + + return new Selection(subgroups, this._parents); } - return d3_selection(subgroups); -}; + function empty() { + return []; + } -function d3_selection_filter(selector) { - return function() { - return d3_selectMatches(this, selector); - }; -} + function selectorAll(selector) { + return selector == null ? empty : function() { + return this.querySelectorAll(selector); + }; + } -d3_selectionPrototype.order = function() { - for (var j = -1, m = this.length; ++j < m;) { - for (var group = this[j], i = group.length - 1, next = group[i], node; --i >= 0;) { - if (node = group[i]) { - if (next && next !== node.nextSibling) next.parentNode.insertBefore(node, next); - next = node; + function selection_selectAll(select) { + if (typeof select !== "function") select = selectorAll(select); + + for (var groups = this._groups, m = groups.length, subgroups = [], parents = [], j = 0; j < m; ++j) { + for (var group = groups[j], n = group.length, node, i = 0; i < n; ++i) { + if (node = group[i]) { + subgroups.push(select.call(node, node.__data__, i, group)); + parents.push(node); + } } } - } - return this; -}; -d3_selectionPrototype.sort = function(comparator) { - comparator = d3_selection_sortComparator.apply(this, arguments); - for (var j = -1, m = this.length; ++j < m;) this[j].sort(comparator); - return this.order(); -}; + return new Selection(subgroups, parents); + } -function d3_selection_sortComparator(comparator) { - if (!arguments.length) comparator = d3.ascending; - return function(a, b) { - return a && b ? comparator(a.__data__, b.__data__) : !a - !b; + var matcher = function(selector) { + return function() { + return this.matches(selector); + }; }; -} - -d3_selectionPrototype.each = function(callback) { - return d3_selection_each(this, function(node, i, j) { - callback.call(node, node.__data__, i, j); - }); -}; -function d3_selection_each(groups, callback) { - for (var j = 0, m = groups.length; j < m; j++) { - for (var group = groups[j], i = 0, n = group.length, node; i < n; i++) { - if (node = group[i]) callback(node, i, j); + if (typeof document !== "undefined") { + var element = document.documentElement; + if (!element.matches) { + var vendorMatches = element.webkitMatchesSelector + || element.msMatchesSelector + || element.mozMatchesSelector + || element.oMatchesSelector; + matcher = function(selector) { + return function() { + return vendorMatches.call(this, selector); + }; + }; } } - return groups; -} -d3_selectionPrototype.call = function(callback) { - var args = d3_array(arguments); - callback.apply(args[0] = this, args); - return this; -}; + var matcher$1 = matcher; -d3_selectionPrototype.empty = function() { - return !this.node(); -}; + function selection_filter(match) { + if (typeof match !== "function") match = matcher$1(match); -d3_selectionPrototype.node = function() { - for (var j = 0, m = this.length; j < m; j++) { - for (var group = this[j], i = 0, n = group.length; i < n; i++) { - var node = group[i]; - if (node) return node; + for (var groups = this._groups, m = groups.length, subgroups = new Array(m), j = 0; j < m; ++j) { + for (var group = groups[j], n = group.length, subgroup = subgroups[j] = [], node, i = 0; i < n; ++i) { + if ((node = group[i]) && match.call(node, node.__data__, i, group)) { + subgroup.push(node); + } + } } + + return new Selection(subgroups, this._parents); } - return null; -}; -d3_selectionPrototype.size = function() { - var n = 0; - this.each(function() { ++n; }); - return n; -}; + function sparse(update) { + return new Array(update.length); + } -function d3_selection_enter(selection) { - d3_subclass(selection, d3_selection_enterPrototype); - return selection; -} + function selection_enter() { + return new Selection(this._enter || this._groups.map(sparse), this._parents); + } -var d3_selection_enterPrototype = []; + function EnterNode(parent, datum) { + this.ownerDocument = parent.ownerDocument; + this.namespaceURI = parent.namespaceURI; + this._next = null; + this._parent = parent; + this.__data__ = datum; + } -d3.selection.enter = d3_selection_enter; -d3.selection.enter.prototype = d3_selection_enterPrototype; + EnterNode.prototype = { + constructor: EnterNode, + appendChild: function(child) { return this._parent.insertBefore(child, this._next); }, + insertBefore: function(child, next) { return this._parent.insertBefore(child, next); }, + querySelector: function(selector) { return this._parent.querySelector(selector); }, + querySelectorAll: function(selector) { return this._parent.querySelectorAll(selector); } + }; -d3_selection_enterPrototype.append = d3_selectionPrototype.append; -d3_selection_enterPrototype.empty = d3_selectionPrototype.empty; -d3_selection_enterPrototype.node = d3_selectionPrototype.node; -d3_selection_enterPrototype.call = d3_selectionPrototype.call; -d3_selection_enterPrototype.size = d3_selectionPrototype.size; + function constant$1(x) { + return function() { + return x; + }; + } + var keyPrefix = "$"; // Protect against keys like “__proto__”. -d3_selection_enterPrototype.select = function(selector) { - var subgroups = [], - subgroup, - subnode, - upgroup, - group, - node; + function bindIndex(parent, group, enter, update, exit, data) { + var i = 0, + node, + groupLength = group.length, + dataLength = data.length; - for (var j = -1, m = this.length; ++j < m;) { - upgroup = (group = this[j]).update; - subgroups.push(subgroup = []); - subgroup.parentNode = group.parentNode; - for (var i = -1, n = group.length; ++i < n;) { + // Put any non-null nodes that fit into update. + // Put any null nodes into enter. + // Put any remaining data into enter. + for (; i < dataLength; ++i) { if (node = group[i]) { - subgroup.push(upgroup[i] = subnode = selector.call(group.parentNode, node.__data__, i, j)); - subnode.__data__ = node.__data__; + node.__data__ = data[i]; + update[i] = node; } else { - subgroup.push(null); + enter[i] = new EnterNode(parent, data[i]); + } + } + + // Put any non-null nodes that don’t fit into exit. + for (; i < groupLength; ++i) { + if (node = group[i]) { + exit[i] = node; } } } - return d3_selection(subgroups); -}; + function bindKey(parent, group, enter, update, exit, data, key) { + var i, + node, + nodeByKeyValue = {}, + groupLength = group.length, + dataLength = data.length, + keyValues = new Array(groupLength), + keyValue; + + // Compute the key for each node. + // If multiple nodes have the same key, the duplicates are added to exit. + for (i = 0; i < groupLength; ++i) { + if (node = group[i]) { + keyValues[i] = keyValue = keyPrefix + key.call(node, node.__data__, i, group); + if (keyValue in nodeByKeyValue) { + exit[i] = node; + } else { + nodeByKeyValue[keyValue] = node; + } + } + } -d3_selection_enterPrototype.insert = function(name, before) { - if (arguments.length < 2) before = d3_selection_enterInsertBefore(this); - return d3_selectionPrototype.insert.call(this, name, before); -}; + // Compute the key for each datum. + // If there a node associated with this key, join and add it to update. + // If there is not (or the key is a duplicate), add it to enter. + for (i = 0; i < dataLength; ++i) { + keyValue = keyPrefix + key.call(parent, data[i], i, data); + if (node = nodeByKeyValue[keyValue]) { + update[i] = node; + node.__data__ = data[i]; + nodeByKeyValue[keyValue] = null; + } else { + enter[i] = new EnterNode(parent, data[i]); + } + } -function d3_selection_enterInsertBefore(enter) { - var i0, j0; - return function(d, i, j) { - var group = enter[j].update, - n = group.length, - node; - if (j != j0) j0 = j, i0 = 0; - if (i >= i0) i0 = i + 1; - while (!(node = group[i0]) && ++i0 < n); - return node; - }; -} - -// import "../transition/transition"; - -d3_selectionPrototype.transition = function() { - var id = d3_transitionInheritId || ++d3_transitionId, - subgroups = [], - subgroup, - node, - transition = d3_transitionInherit || {time: Date.now(), ease: d3_ease_cubicInOut, delay: 0, duration: 250}; - - for (var j = -1, m = this.length; ++j < m;) { - subgroups.push(subgroup = []); - for (var group = this[j], i = -1, n = group.length; ++i < n;) { - if (node = group[i]) d3_transitionNode(node, i, id, transition); - subgroup.push(node); - } - } - - return d3_transition(subgroups, id); -}; -// import "../transition/transition"; - -d3_selectionPrototype.interrupt = function() { - return this.each(d3_selection_interrupt); -}; - -function d3_selection_interrupt() { - var lock = this.__transition__; - if (lock) ++lock.active; -} - -// TODO fast singleton implementation? -d3.select = function(node) { - var group = [typeof node === "string" ? d3_select(node, d3_document) : node]; - group.parentNode = d3_documentElement; - return d3_selection([group]); -}; - -d3.selectAll = function(nodes) { - var group = d3_array(typeof nodes === "string" ? d3_selectAll(nodes, d3_document) : nodes); - group.parentNode = d3_documentElement; - return d3_selection([group]); -}; - -var d3_selectionRoot = d3.select(d3_documentElement); - -d3_selectionPrototype.on = function(type, listener, capture) { - var n = arguments.length; - if (n < 3) { - - // For on(object) or on(object, boolean), the object specifies the event - // types and listeners to add or remove. The optional boolean specifies - // whether the listener captures events. - if (typeof type !== "string") { - if (n < 2) listener = false; - for (capture in type) this.each(d3_selection_on(capture, type[capture], listener)); - return this; + // Add any remaining nodes that were not bound to data to exit. + for (i = 0; i < groupLength; ++i) { + if ((node = group[i]) && (nodeByKeyValue[keyValues[i]] === node)) { + exit[i] = node; + } } + } - // For on(string), return the listener for the first node. - if (n < 2) return (n = this.node()["__on" + type]) && n._; + function selection_data(value, key) { + if (!value) { + data = new Array(this.size()), j = -1; + this.each(function(d) { data[++j] = d; }); + return data; + } + + var bind = key ? bindKey : bindIndex, + parents = this._parents, + groups = this._groups; + + if (typeof value !== "function") value = constant$1(value); + + for (var m = groups.length, update = new Array(m), enter = new Array(m), exit = new Array(m), j = 0; j < m; ++j) { + var parent = parents[j], + group = groups[j], + groupLength = group.length, + data = value.call(parent, parent && parent.__data__, j, parents), + dataLength = data.length, + enterGroup = enter[j] = new Array(dataLength), + updateGroup = update[j] = new Array(dataLength), + exitGroup = exit[j] = new Array(groupLength); + + bind(parent, group, enterGroup, updateGroup, exitGroup, data, key); + + // Now connect the enter nodes to their following update node, such that + // appendChild can insert the materialized enter node before this node, + // rather than at the end of the parent node. + for (var i0 = 0, i1 = 0, previous, next; i0 < dataLength; ++i0) { + if (previous = enterGroup[i0]) { + if (i0 >= i1) i1 = i0 + 1; + while (!(next = updateGroup[i1]) && ++i1 < dataLength); + previous._next = next || null; + } + } + } - // For on(string, function), use the default capture. - capture = false; + update = new Selection(update, parents); + update._enter = enter; + update._exit = exit; + return update; } - // Otherwise, a type, listener and capture are specified, and handled as below. - return this.each(d3_selection_on(type, listener, capture)); -}; + function selection_exit() { + return new Selection(this._exit || this._groups.map(sparse), this._parents); + } -function d3_selection_on(type, listener, capture) { - var name = "__on" + type, - i = type.indexOf("."), - wrap = d3_selection_onListener; + function selection_merge(selection$$1) { - if (i > 0) type = type.substring(0, i); - var filter = d3_selection_onFilters.get(type); - if (filter) type = filter, wrap = d3_selection_onFilter; + for (var groups0 = this._groups, groups1 = selection$$1._groups, m0 = groups0.length, m1 = groups1.length, m = Math.min(m0, m1), merges = new Array(m0), j = 0; j < m; ++j) { + for (var group0 = groups0[j], group1 = groups1[j], n = group0.length, merge = merges[j] = new Array(n), node, i = 0; i < n; ++i) { + if (node = group0[i] || group1[i]) { + merge[i] = node; + } + } + } - function onRemove() { - var l = this[name]; - if (l) { - this.removeEventListener(type, l, l.$); - delete this[name]; + for (; j < m0; ++j) { + merges[j] = groups0[j]; } - } - function onAdd() { - var l = wrap(listener, d3_array(arguments)); - if (typeof Raven !== 'undefined') l = Raven.wrap(l); - onRemove.call(this); - this.addEventListener(type, this[name] = l, l.$ = capture); - l._ = listener; + return new Selection(merges, this._parents); } - function removeAll() { - var re = new RegExp("^__on([^.]+)" + d3.requote(type) + "$"), - match; - for (var name in this) { - if (match = name.match(re)) { - var l = this[name]; - this.removeEventListener(match[1], l, l.$); - delete this[name]; + function selection_order() { + + for (var groups = this._groups, j = -1, m = groups.length; ++j < m;) { + for (var group = groups[j], i = group.length - 1, next = group[i], node; --i >= 0;) { + if (node = group[i]) { + if (next && next !== node.nextSibling) next.parentNode.insertBefore(node, next); + next = node; + } } } - } - - return i - ? listener ? onAdd : onRemove - : listener ? d3_noop : removeAll; -} -var d3_selection_onFilters = d3.map({ - mouseenter: "mouseover", - mouseleave: "mouseout" -}); + return this; + } -d3_selection_onFilters.forEach(function(k) { - if ("on" + k in d3_document) d3_selection_onFilters.remove(k); -}); + function selection_sort(compare) { + if (!compare) compare = ascending$1; -function d3_selection_onListener(listener, argumentz) { - return function(e) { - var o = d3.event; // Events can be reentrant (e.g., focus). - d3.event = e; - argumentz[0] = this.__data__; - try { - listener.apply(this, argumentz); - } finally { - d3.event = o; + function compareNode(a, b) { + return a && b ? compare(a.__data__, b.__data__) : !a - !b; } - }; -} -function d3_selection_onFilter(listener, argumentz) { - var l = d3_selection_onListener(listener, argumentz); - return function(e) { - var target = this, related = e.relatedTarget; - if (!related || (related !== target && !(related.compareDocumentPosition(target) & 8))) { - l.call(target, e); - } - }; -} - -var d3_event_dragSelect = d3_vendorSymbol(d3_documentElement.style, "userSelect"), - d3_event_dragId = 0; - -function d3_event_dragSuppress() { - var name = ".dragsuppress-" + ++d3_event_dragId, - touchmove = "touchmove" + name, - selectstart = "selectstart" + name, - dragstart = "dragstart" + name, - click = "click" + name, - w = d3.select(d3_window).on(touchmove, d3_eventPreventDefault).on(selectstart, d3_eventPreventDefault).on(dragstart, d3_eventPreventDefault), - style = d3_documentElement.style, - select = style[d3_event_dragSelect]; - style[d3_event_dragSelect] = "none"; - return function(suppressClick) { - w.on(name, null); - style[d3_event_dragSelect] = select; - if (suppressClick) { // suppress the next click, but only if it’s immediate - function off() { w.on(click, null); } - w.on(click, function() { d3_eventCancel(); off(); }, true); - setTimeout(off, 0); - } - }; -} - -d3.mouse = function(container) { - return d3_mousePoint(container, d3_eventSource()); -}; - -// https://bugs.webkit.org/show_bug.cgi?id=44083 -var d3_mouse_bug44083 = /WebKit/.test(d3_window.navigator.userAgent) ? -1 : 0; - -function d3_mousePoint(container, e) { - if (e.changedTouches) e = e.changedTouches[0]; - var svg = container.ownerSVGElement || container; - if (svg.createSVGPoint) { - var point = svg.createSVGPoint(); - if (d3_mouse_bug44083 < 0 && (d3_window.scrollX || d3_window.scrollY)) { - svg = d3.select("body").append("svg").style({ - position: "absolute", - top: 0, - left: 0, - margin: 0, - padding: 0, - border: "none" - }, "important"); - var ctm = svg[0][0].getScreenCTM(); - d3_mouse_bug44083 = !(ctm.f || ctm.e); - svg.remove(); - } - if (d3_mouse_bug44083) point.x = e.pageX, point.y = e.pageY; - else point.x = e.clientX, point.y = e.clientY; - point = point.matrixTransform(container.getScreenCTM().inverse()); - return [point.x, point.y]; - } - var rect = container.getBoundingClientRect(); - return [e.clientX - rect.left - container.clientLeft, e.clientY - rect.top - container.clientTop]; -}; - -d3.touches = function(container, touches) { - if (arguments.length < 2) touches = d3_eventSource().touches; - return touches ? d3_array(touches).map(function(touch) { - var point = d3_mousePoint(container, touch); - point.identifier = touch.identifier; - return point; - }) : []; -}; -var π = Math.PI, - τ = 2 * π, - halfπ = π / 2, - ε = 1e-6, - ε2 = ε * ε, - d3_radians = π / 180, - d3_degrees = 180 / π; - -function d3_sgn(x) { - return x > 0 ? 1 : x < 0 ? -1 : 0; -} - -function d3_acos(x) { - return x > 1 ? 0 : x < -1 ? π : Math.acos(x); -} - -function d3_asin(x) { - return x > 1 ? halfπ : x < -1 ? -halfπ : Math.asin(x); -} - -function d3_sinh(x) { - return ((x = Math.exp(x)) - 1 / x) / 2; -} - -function d3_cosh(x) { - return ((x = Math.exp(x)) + 1 / x) / 2; -} - -function d3_tanh(x) { - return ((x = Math.exp(2 * x)) - 1) / (x + 1); -} - -function d3_haversin(x) { - return (x = Math.sin(x / 2)) * x; -} - -var ρ = Math.SQRT2, - ρ2 = 2, - ρ4 = 4; - -// p0 = [ux0, uy0, w0] -// p1 = [ux1, uy1, w1] -d3.interpolateZoom = function(p0, p1) { - var ux0 = p0[0], uy0 = p0[1], w0 = p0[2], - ux1 = p1[0], uy1 = p1[1], w1 = p1[2]; - - var dx = ux1 - ux0, - dy = uy1 - uy0, - d2 = dx * dx + dy * dy, - d1 = Math.sqrt(d2), - b0 = (w1 * w1 - w0 * w0 + ρ4 * d2) / (2 * w0 * ρ2 * d1), - b1 = (w1 * w1 - w0 * w0 - ρ4 * d2) / (2 * w1 * ρ2 * d1), - r0 = Math.log(Math.sqrt(b0 * b0 + 1) - b0), - r1 = Math.log(Math.sqrt(b1 * b1 + 1) - b1), - dr = r1 - r0, - S = (dr || Math.log(w1 / w0)) / ρ; - - function interpolate(t) { - var s = t * S; - if (dr) { - // General case. - var coshr0 = d3_cosh(r0), - u = w0 / (ρ2 * d1) * (coshr0 * d3_tanh(ρ * s + r0) - d3_sinh(r0)); - return [ - ux0 + u * dx, - uy0 + u * dy, - w0 * coshr0 / d3_cosh(ρ * s + r0) - ]; + for (var groups = this._groups, m = groups.length, sortgroups = new Array(m), j = 0; j < m; ++j) { + for (var group = groups[j], n = group.length, sortgroup = sortgroups[j] = new Array(n), node, i = 0; i < n; ++i) { + if (node = group[i]) { + sortgroup[i] = node; + } + } + sortgroup.sort(compareNode); } - // Special case for u0 ~= u1. - return [ - ux0 + t * dx, - uy0 + t * dy, - w0 * Math.exp(ρ * s) - ]; - } - interpolate.duration = S * 1000; - - return interpolate; -}; - -d3.behavior.zoom = function() { - var view = {x: 0, y: 0, k: 1}, - translate0, // translate when we started zooming (to avoid drift) - center, // desired position of translate0 after zooming - size = [960, 500], // viewport size; required for zoom interpolation - scaleExtent = d3_behavior_zoomInfinity, - mousedown = "mousedown.zoom", - mousemove = "mousemove.zoom", - mouseup = "mouseup.zoom", - mousewheelTimer, - touchstart = "touchstart.zoom", - touchtime, // time of last touchstart (to detect double-tap) - event = d3_eventDispatch(zoom, "zoomstart", "zoom", "zoomend"), - x0, - x1, - y0, - y1; - - function zoom(g) { - g .on(mousedown, mousedowned) - .on(d3_behavior_zoomWheel + ".zoom", mousewheeled) - .on(mousemove, mousewheelreset) - .on("dblclick.zoom", dblclicked) - .on(touchstart, touchstarted); - } - - zoom.event = function(g) { - g.each(function() { - var event_ = event.of(this, arguments), - view1 = view; - if (d3_transitionInheritId) { - d3.select(this).transition() - .each("start.zoom", function() { - view = this.__chart__ || {x: 0, y: 0, k: 1}; // pre-transition state - zoomstarted(event_); - }) - .tween("zoom:zoom", function() { - var dx = size[0], - dy = size[1], - cx = dx / 2, - cy = dy / 2, - i = d3.interpolateZoom( - [(cx - view.x) / view.k, (cy - view.y) / view.k, dx / view.k], - [(cx - view1.x) / view1.k, (cy - view1.y) / view1.k, dx / view1.k] - ); - return function(t) { - var l = i(t), k = dx / l[2]; - this.__chart__ = view = {x: cx - l[0] * k, y: cy - l[1] * k, k: k}; - zoomed(event_); - }; - }) - .each("end.zoom", function() { - zoomended(event_); - }); - } else { - this.__chart__ = view; - zoomstarted(event_); - zoomed(event_); - zoomended(event_); - } - }); + return new Selection(sortgroups, this._parents).order(); } - zoom.translate = function(_) { - if (!arguments.length) return [view.x, view.y]; - view = {x: +_[0], y: +_[1], k: view.k}; // copy-on-write - rescale(); - return zoom; - }; - - zoom.scale = function(_) { - if (!arguments.length) return view.k; - view = {x: view.x, y: view.y, k: +_}; // copy-on-write - rescale(); - return zoom; - }; + function ascending$1(a, b) { + return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN; + } - zoom.scaleExtent = function(_) { - if (!arguments.length) return scaleExtent; - scaleExtent = _ == null ? d3_behavior_zoomInfinity : [+_[0], +_[1]]; - return zoom; - }; + function selection_call() { + var callback = arguments[0]; + arguments[0] = this; + callback.apply(null, arguments); + return this; + } - zoom.center = function(_) { - if (!arguments.length) return center; - center = _ && [+_[0], +_[1]]; - return zoom; - }; + function selection_nodes() { + var nodes = new Array(this.size()), i = -1; + this.each(function() { nodes[++i] = this; }); + return nodes; + } - zoom.size = function(_) { - if (!arguments.length) return size; - size = _ && [+_[0], +_[1]]; - return zoom; - }; + function selection_node() { - zoom.x = function(z) { - if (!arguments.length) return x1; - x1 = z; - x0 = z.copy(); - view = {x: 0, y: 0, k: 1}; // copy-on-write - return zoom; - }; + for (var groups = this._groups, j = 0, m = groups.length; j < m; ++j) { + for (var group = groups[j], i = 0, n = group.length; i < n; ++i) { + var node = group[i]; + if (node) return node; + } + } - zoom.y = function(z) { - if (!arguments.length) return y1; - y1 = z; - y0 = z.copy(); - view = {x: 0, y: 0, k: 1}; // copy-on-write - return zoom; - }; + return null; + } - function location(p) { - return [(p[0] - view.x) / view.k, (p[1] - view.y) / view.k]; + function selection_size() { + var size = 0; + this.each(function() { ++size; }); + return size; } - function point(l) { - return [l[0] * view.k + view.x, l[1] * view.k + view.y]; + function selection_empty() { + return !this.node(); } - function scaleTo(s) { - view.k = Math.max(scaleExtent[0], Math.min(scaleExtent[1], s)); + function selection_each(callback) { + + for (var groups = this._groups, j = 0, m = groups.length; j < m; ++j) { + for (var group = groups[j], i = 0, n = group.length, node; i < n; ++i) { + if (node = group[i]) callback.call(node, node.__data__, i, group); + } + } + + return this; } - function translateTo(p, l) { - l = point(l); - view.x += p[0] - l[0]; - view.y += p[1] - l[1]; + function attrRemove(name) { + return function() { + this.removeAttribute(name); + }; } - function rescale() { - if (x1) x1.domain(x0.range().map(function(x) { return (x - view.x) / view.k; }).map(x0.invert)); - if (y1) y1.domain(y0.range().map(function(y) { return (y - view.y) / view.k; }).map(y0.invert)); + function attrRemoveNS(fullname) { + return function() { + this.removeAttributeNS(fullname.space, fullname.local); + }; } - function zoomstarted(event) { - event({type: "zoomstart"}); + function attrConstant(name, value) { + return function() { + this.setAttribute(name, value); + }; } - function zoomed(event) { - rescale(); - event({type: "zoom", scale: view.k, translate: [view.x, view.y]}); + function attrConstantNS(fullname, value) { + return function() { + this.setAttributeNS(fullname.space, fullname.local, value); + }; } - function zoomended(event) { - event({type: "zoomend"}); + function attrFunction(name, value) { + return function() { + var v = value.apply(this, arguments); + if (v == null) this.removeAttribute(name); + else this.setAttribute(name, v); + }; } - function mousedowned() { - var target = this, - event_ = event.of(target, arguments), - eventTarget = d3.event.target, - dragged = 0, - w = d3.select(d3_window).on(mousemove, moved).on(mouseup, ended), - l = location(d3.mouse(target)), - dragRestore = d3_event_dragSuppress(); + function attrFunctionNS(fullname, value) { + return function() { + var v = value.apply(this, arguments); + if (v == null) this.removeAttributeNS(fullname.space, fullname.local); + else this.setAttributeNS(fullname.space, fullname.local, v); + }; + } - d3_selection_interrupt.call(target); - zoomstarted(event_); + function selection_attr(name, value) { + var fullname = namespace(name); - function moved() { - dragged = 1; - translateTo(d3.mouse(target), l); - zoomed(event_); + if (arguments.length < 2) { + var node = this.node(); + return fullname.local + ? node.getAttributeNS(fullname.space, fullname.local) + : node.getAttribute(fullname); } - function ended() { - w.on(mousemove, d3_window === target ? mousewheelreset : null).on(mouseup, null); - dragRestore(dragged && d3.event.target === eventTarget); - zoomended(event_); - } + return this.each((value == null + ? (fullname.local ? attrRemoveNS : attrRemove) : (typeof value === "function" + ? (fullname.local ? attrFunctionNS : attrFunction) + : (fullname.local ? attrConstantNS : attrConstant)))(fullname, value)); } - // These closures persist for as long as at least one touch is active. - function touchstarted() { - var target = this, - event_ = event.of(target, arguments), - locations0 = {}, // touchstart locations - distance0 = 0, // distance² between initial touches - scale0, // scale when we started touching - eventId = d3.event.changedTouches[0].identifier, - touchmove = "touchmove.zoom-" + eventId, - touchend = "touchend.zoom-" + eventId, - w = d3.select(d3_window).on(touchmove, moved).on(touchend, ended), - t = d3.select(target).on(mousedown, null).on(touchstart, started), // prevent duplicate events - dragRestore = d3_event_dragSuppress(); + function defaultView(node) { + return (node.ownerDocument && node.ownerDocument.defaultView) // node is a Node + || (node.document && node) // node is a Window + || node.defaultView; // node is a Document + } - d3_selection_interrupt.call(target); - started(); - zoomstarted(event_); + function styleRemove(name) { + return function() { + this.style.removeProperty(name); + }; + } - // Updates locations of any touches in locations0. - function relocate() { - var touches = d3.touches(target); - scale0 = view.k; - touches.forEach(function(t) { - if (t.identifier in locations0) locations0[t.identifier] = location(t); - }); - return touches; - } + function styleConstant(name, value, priority) { + return function() { + this.style.setProperty(name, value, priority); + }; + } - // Temporarily override touchstart while gesture is active. - function started() { - // Only track touches started on the target element. - var changed = d3.event.changedTouches; - for (var i = 0, n = changed.length; i < n; ++i) { - locations0[changed[i].identifier] = null; - } - - var touches = relocate(), - now = Date.now(); - - if (touches.length === 1) { - if (now - touchtime < 500) { // dbltap - var p = touches[0], l = locations0[p.identifier]; - scaleTo(view.k * 2); - translateTo(p, l); - d3_eventPreventDefault(); - zoomed(event_); - } - touchtime = now; - } else if (touches.length > 1) { - var p = touches[0], q = touches[1], - dx = p[0] - q[0], dy = p[1] - q[1]; - distance0 = dx * dx + dy * dy; - } - } - - function moved() { - var touches = d3.touches(target), - p0, l0, - p1, l1; - for (var i = 0, n = touches.length; i < n; ++i, l1 = null) { - p1 = touches[i]; - if (l1 = locations0[p1.identifier]) { - if (l0) break; - p0 = p1, l0 = l1; - } - } + function styleFunction(name, value, priority) { + return function() { + var v = value.apply(this, arguments); + if (v == null) this.style.removeProperty(name); + else this.style.setProperty(name, v, priority); + }; + } - if (l1) { - var distance1 = (distance1 = p1[0] - p0[0]) * distance1 + (distance1 = p1[1] - p0[1]) * distance1, - scale1 = distance0 && Math.sqrt(distance1 / distance0); - p0 = [(p0[0] + p1[0]) / 2, (p0[1] + p1[1]) / 2]; - l0 = [(l0[0] + l1[0]) / 2, (l0[1] + l1[1]) / 2]; - scaleTo(scale1 * scale0); - } + function selection_style(name, value, priority) { + return arguments.length > 1 + ? this.each((value == null + ? styleRemove : typeof value === "function" + ? styleFunction + : styleConstant)(name, value, priority == null ? "" : priority)) + : styleValue(this.node(), name); + } - touchtime = null; - translateTo(p0, l0); - zoomed(event_); - } - - function ended() { - // If there are any globally-active touches remaining, remove the ended - // touches from locations0. - if (d3.event.touches.length) { - var changed = d3.event.changedTouches; - for (var i = 0, n = changed.length; i < n; ++i) { - delete locations0[changed[i].identifier]; - } - // If locations0 is not empty, then relocate and continue listening for - // touchmove and touchend. - for (var identifier in locations0) { - return void relocate(); // locations may have detached due to rotation - } - } - // Otherwise, remove touchmove and touchend listeners. - w.on(touchmove, null).on(touchend, null); - t.on(mousedown, mousedowned).on(touchstart, touchstarted); - dragRestore(); - zoomended(event_); - } - } - - function mousewheeled() { - var event_ = event.of(this, arguments); - if (mousewheelTimer) clearTimeout(mousewheelTimer); - else d3_selection_interrupt.call(this), zoomstarted(event_); - mousewheelTimer = setTimeout(function() { mousewheelTimer = null; zoomended(event_); }, 50); - d3_eventPreventDefault(); - var point = center || d3.mouse(this); - if (!translate0) translate0 = location(point); - scaleTo(Math.pow(2, d3_behavior_zoomDelta() * .002) * view.k); - translateTo(point, translate0); - zoomed(event_); - } - - function mousewheelreset() { - translate0 = null; - } - - function dblclicked() { - var event_ = event.of(this, arguments), - p = d3.mouse(this), - l = location(p), - k = Math.log(view.k) / Math.LN2; - zoomstarted(event_); - scaleTo(Math.pow(2, d3.event.shiftKey ? Math.ceil(k) - 1 : Math.floor(k) + 1)); - translateTo(p, l); - zoomed(event_); - zoomended(event_); - } - - return d3.rebind(zoom, event, "on"); -}; - -var d3_behavior_zoomInfinity = [0, Infinity]; // default scale extent - -// https://developer.mozilla.org/en-US/docs/Mozilla_event_reference/wheel -var d3_behavior_zoomDelta, d3_behavior_zoomWheel - = "onwheel" in d3_document ? (d3_behavior_zoomDelta = function() { return -d3.event.deltaY * (d3.event.deltaMode ? 120 : 1); }, "wheel") - : "onmousewheel" in d3_document ? (d3_behavior_zoomDelta = function() { return d3.event.wheelDelta; }, "mousewheel") - : (d3_behavior_zoomDelta = function() { return -d3.event.detail; }, "MozMousePixelScroll"); -function d3_functor(v) { - return typeof v === "function" ? v : function() { return v; }; -} - -d3.functor = d3_functor; - -var d3_timer_queueHead, - d3_timer_queueTail, - d3_timer_interval, // is an interval (or frame) active? - d3_timer_timeout, // is a timeout active? - d3_timer_active, // active timer object - d3_timer_frame = d3_window[d3_vendorSymbol(d3_window, "requestAnimationFrame")] || function(callback) { setTimeout(callback, 17); }; - -// The timer will continue to fire until callback returns true. -d3.timer = function(callback, delay, then) { - var n = arguments.length; - if (n < 2) delay = 0; - if (n < 3) then = Date.now(); - - // Add the callback to the tail of the queue. - var time = then + delay, timer = {c: callback, t: time, f: false, n: null}; - if (d3_timer_queueTail) d3_timer_queueTail.n = timer; - else d3_timer_queueHead = timer; - d3_timer_queueTail = timer; - - // Start animatin'! - if (!d3_timer_interval) { - d3_timer_timeout = clearTimeout(d3_timer_timeout); - d3_timer_interval = 1; - d3_timer_frame(d3_timer_step); - } -}; - -function d3_timer_step() { - var now = d3_timer_mark(), - delay = d3_timer_sweep() - now; - if (delay > 24) { - if (isFinite(delay)) { - clearTimeout(d3_timer_timeout); - d3_timer_timeout = setTimeout(d3_timer_step, delay); - } - d3_timer_interval = 0; - } else { - d3_timer_interval = 1; - d3_timer_frame(d3_timer_step); - } -} - -d3.timer.flush = function() { - d3_timer_mark(); - d3_timer_sweep(); -}; - -function d3_timer_mark() { - var now = Date.now(); - d3_timer_active = d3_timer_queueHead; - while (d3_timer_active) { - if (now >= d3_timer_active.t) d3_timer_active.f = d3_timer_active.c(now - d3_timer_active.t); - d3_timer_active = d3_timer_active.n; - } - return now; -} - -// Flush after callbacks to avoid concurrent queue modification. -// Returns the time of the earliest active timer, post-sweep. -function d3_timer_sweep() { - var t0, - t1 = d3_timer_queueHead, - time = Infinity; - while (t1) { - if (t1.f) { - t1 = t0 ? t0.n = t1.n : d3_timer_queueHead = t1.n; - } else { - if (t1.t < time) time = t1.t; - t1 = (t0 = t1).n; - } - } - d3_timer_queueTail = t0; - return time; -} -d3.geo = {}; -function d3_identity(d) { - return d; -} -function d3_true() { - return true; -} - -function d3_geo_spherical(cartesian) { - return [ - Math.atan2(cartesian[1], cartesian[0]), - d3_asin(cartesian[2]) - ]; -} - -function d3_geo_sphericalEqual(a, b) { - return abs(a[0] - b[0]) < ε && abs(a[1] - b[1]) < ε; -} - -// General spherical polygon clipping algorithm: takes a polygon, cuts it into -// visible line segments and rejoins the segments by interpolating along the -// clip edge. -function d3_geo_clipPolygon(segments, compare, clipStartInside, interpolate, listener) { - var subject = [], - clip = []; - - segments.forEach(function(segment) { - if ((n = segment.length - 1) <= 0) return; - var n, p0 = segment[0], p1 = segment[n]; - - // If the first and last points of a segment are coincident, then treat as - // a closed ring. - // TODO if all rings are closed, then the winding order of the exterior - // ring should be checked. - if (d3_geo_sphericalEqual(p0, p1)) { - listener.lineStart(); - for (var i = 0; i < n; ++i) listener.point((p0 = segment[i])[0], p0[1]); - listener.lineEnd(); - return; - } + function styleValue(node, name) { + return node.style.getPropertyValue(name) + || defaultView(node).getComputedStyle(node, null).getPropertyValue(name); + } - var a = new d3_geo_clipPolygonIntersection(p0, segment, null, true), - b = new d3_geo_clipPolygonIntersection(p0, null, a, false); - a.o = b; - subject.push(a); - clip.push(b); - a = new d3_geo_clipPolygonIntersection(p1, segment, null, false); - b = new d3_geo_clipPolygonIntersection(p1, null, a, true); - a.o = b; - subject.push(a); - clip.push(b); - }); - clip.sort(compare); - d3_geo_clipPolygonLinkCircular(subject); - d3_geo_clipPolygonLinkCircular(clip); - if (!subject.length) return; - - for (var i = 0, entry = clipStartInside, n = clip.length; i < n; ++i) { - clip[i].e = entry = !entry; - } - - var start = subject[0], - points, - point; - while (1) { - // Find first unvisited intersection. - var current = start, - isSubject = true; - while (current.v) if ((current = current.n) === start) return; - points = current.z; - listener.lineStart(); - do { - current.v = current.o.v = true; - if (current.e) { - if (isSubject) { - for (var i = 0, n = points.length; i < n; ++i) listener.point((point = points[i])[0], point[1]); - } else { - interpolate(current.x, current.n.x, 1, listener); - } - current = current.n; - } else { - if (isSubject) { - points = current.p.z; - for (var i = points.length - 1; i >= 0; --i) listener.point((point = points[i])[0], point[1]); - } else { - interpolate(current.x, current.p.x, -1, listener); - } - current = current.p; - } - current = current.o; - points = current.z; - isSubject = !isSubject; - } while (!current.v); - listener.lineEnd(); - } -} - -function d3_geo_clipPolygonLinkCircular(array) { - if (!(n = array.length)) return; - var n, - i = 0, - a = array[0], - b; - while (++i < n) { - a.n = b = array[i]; - b.p = a; - a = b; - } - a.n = b = array[0]; - b.p = a; -} - -function d3_geo_clipPolygonIntersection(point, points, other, entry) { - this.x = point; - this.z = points; - this.o = other; // another intersection - this.e = entry; // is an entry? - this.v = false; // visited - this.n = this.p = null; // next & previous -} - -function d3_geo_clip(pointVisible, clipLine, interpolate, clipStart) { - return function(rotate, listener) { - var line = clipLine(listener), - rotatedClipStart = rotate.invert(clipStart[0], clipStart[1]); - - var clip = { - point: point, - lineStart: lineStart, - lineEnd: lineEnd, - polygonStart: function() { - clip.point = pointRing; - clip.lineStart = ringStart; - clip.lineEnd = ringEnd; - segments = []; - polygon = []; - listener.polygonStart(); - }, - polygonEnd: function() { - clip.point = point; - clip.lineStart = lineStart; - clip.lineEnd = lineEnd; - - segments = d3.merge(segments); - var clipStartInside = d3_geo_pointInPolygon(rotatedClipStart, polygon); - if (segments.length) { - d3_geo_clipPolygon(segments, d3_geo_clipSort, clipStartInside, interpolate, listener); - } else if (clipStartInside) { - listener.lineStart(); - interpolate(null, null, 1, listener); - listener.lineEnd(); - } - listener.polygonEnd(); - segments = polygon = null; - }, - sphere: function() { - listener.polygonStart(); - listener.lineStart(); - interpolate(null, null, 1, listener); - listener.lineEnd(); - listener.polygonEnd(); - } + function propertyRemove(name) { + return function() { + delete this[name]; }; + } - function point(λ, φ) { - var point = rotate(λ, φ); - if (pointVisible(λ = point[0], φ = point[1])) listener.point(λ, φ); - } - function pointLine(λ, φ) { - var point = rotate(λ, φ); - line.point(point[0], point[1]); - } - function lineStart() { clip.point = pointLine; line.lineStart(); } - function lineEnd() { clip.point = point; line.lineEnd(); } - - var segments; - - var buffer = d3_geo_clipBufferListener(), - ringListener = clipLine(buffer), - polygon, - ring; - - function pointRing(λ, φ) { - ring.push([λ, φ]); - var point = rotate(λ, φ); - ringListener.point(point[0], point[1]); - } + function propertyConstant(name, value) { + return function() { + this[name] = value; + }; + } - function ringStart() { - ringListener.lineStart(); - ring = []; - } + function propertyFunction(name, value) { + return function() { + var v = value.apply(this, arguments); + if (v == null) delete this[name]; + else this[name] = v; + }; + } - function ringEnd() { - pointRing(ring[0][0], ring[0][1]); - ringListener.lineEnd(); + function selection_property(name, value) { + return arguments.length > 1 + ? this.each((value == null + ? propertyRemove : typeof value === "function" + ? propertyFunction + : propertyConstant)(name, value)) + : this.node()[name]; + } - var clean = ringListener.clean(), - ringSegments = buffer.buffer(), - segment, - n = ringSegments.length; + function classArray(string) { + return string.trim().split(/^|\s+/); + } - ring.pop(); - polygon.push(ring); - ring = null; + function classList(node) { + return node.classList || new ClassList(node); + } - if (!n) return; + function ClassList(node) { + this._node = node; + this._names = classArray(node.getAttribute("class") || ""); + } - // No intersections. - if (clean & 1) { - segment = ringSegments[0]; - var n = segment.length - 1, - i = -1, - point; - listener.lineStart(); - while (++i < n) listener.point((point = segment[i])[0], point[1]); - listener.lineEnd(); - return; + ClassList.prototype = { + add: function(name) { + var i = this._names.indexOf(name); + if (i < 0) { + this._names.push(name); + this._node.setAttribute("class", this._names.join(" ")); + } + }, + remove: function(name) { + var i = this._names.indexOf(name); + if (i >= 0) { + this._names.splice(i, 1); + this._node.setAttribute("class", this._names.join(" ")); } - - // Rejoin connected segments. - // TODO reuse bufferListener.rejoin()? - if (n > 1 && clean & 2) ringSegments.push(ringSegments.pop().concat(ringSegments.shift())); - - segments.push(ringSegments.filter(d3_geo_clipSegmentLength1)); - } - - return clip; - }; -} - -function d3_geo_clipSegmentLength1(segment) { - return segment.length > 1; -} - -function d3_geo_clipBufferListener() { - var lines = [], - line; - return { - lineStart: function() { lines.push(line = []); }, - point: function(λ, φ) { line.push([λ, φ]); }, - lineEnd: d3_noop, - buffer: function() { - var buffer = lines; - lines = []; - line = null; - return buffer; }, - rejoin: function() { - if (lines.length > 1) lines.push(lines.pop().concat(lines.shift())); + contains: function(name) { + return this._names.indexOf(name) >= 0; } }; -} - -// Intersection points are sorted along the clip edge. For both antimeridian -// cutting and circle clipping, the same comparison is used. -function d3_geo_clipSort(a, b) { - return ((a = a.x)[0] < 0 ? a[1] - halfπ - ε : halfπ - a[1]) - - ((b = b.x)[0] < 0 ? b[1] - halfπ - ε : halfπ - b[1]); -} -// Adds floating point numbers with twice the normal precision. -// Reference: J. R. Shewchuk, Adaptive Precision Floating-Point Arithmetic and -// Fast Robust Geometric Predicates, Discrete & Computational Geometry 18(3) -// 305–363 (1997). -// Code adapted from GeographicLib by Charles F. F. Karney, -// http://geographiclib.sourceforge.net/ -// See lib/geographiclib/LICENSE for details. - -function d3_adder() {} - -d3_adder.prototype = { - s: 0, // rounded value - t: 0, // exact error - add: function(y) { - d3_adderSum(y, this.t, d3_adderTemp); - d3_adderSum(d3_adderTemp.s, this.s, this); - if (this.s) this.t += d3_adderTemp.t; - else this.s = d3_adderTemp.t; - }, - reset: function() { - this.s = this.t = 0; - }, - valueOf: function() { - return this.s; - } -}; - -var d3_adderTemp = new d3_adder; - -function d3_adderSum(a, b, o) { - var x = o.s = a + b, // a + b - bv = x - a, av = x - bv; // b_virtual & a_virtual - o.t = (a - av) + (b - bv); // a_roundoff + b_roundoff -} - -d3.geo.stream = function(object, listener) { - if (object && d3_geo_streamObjectType.hasOwnProperty(object.type)) { - d3_geo_streamObjectType[object.type](object, listener); - } else { - d3_geo_streamGeometry(object, listener); - } -}; - -function d3_geo_streamGeometry(geometry, listener) { - if (geometry && d3_geo_streamGeometryType.hasOwnProperty(geometry.type)) { - d3_geo_streamGeometryType[geometry.type](geometry, listener); - } -} - -var d3_geo_streamObjectType = { - Feature: function(feature, listener) { - d3_geo_streamGeometry(feature.geometry, listener); - }, - FeatureCollection: function(object, listener) { - var features = object.features, i = -1, n = features.length; - while (++i < n) d3_geo_streamGeometry(features[i].geometry, listener); - } -}; - -var d3_geo_streamGeometryType = { - Sphere: function(object, listener) { - listener.sphere(); - }, - Point: function(object, listener) { - object = object.coordinates; - listener.point(object[0], object[1], object[2]); - }, - MultiPoint: function(object, listener) { - var coordinates = object.coordinates, i = -1, n = coordinates.length; - while (++i < n) object = coordinates[i], listener.point(object[0], object[1], object[2]); - }, - LineString: function(object, listener) { - d3_geo_streamLine(object.coordinates, listener, 0); - }, - MultiLineString: function(object, listener) { - var coordinates = object.coordinates, i = -1, n = coordinates.length; - while (++i < n) d3_geo_streamLine(coordinates[i], listener, 0); - }, - Polygon: function(object, listener) { - d3_geo_streamPolygon(object.coordinates, listener); - }, - MultiPolygon: function(object, listener) { - var coordinates = object.coordinates, i = -1, n = coordinates.length; - while (++i < n) d3_geo_streamPolygon(coordinates[i], listener); - }, - GeometryCollection: function(object, listener) { - var geometries = object.geometries, i = -1, n = geometries.length; - while (++i < n) d3_geo_streamGeometry(geometries[i], listener); - } -}; - -function d3_geo_streamLine(coordinates, listener, closed) { - var i = -1, n = coordinates.length - closed, coordinate; - listener.lineStart(); - while (++i < n) coordinate = coordinates[i], listener.point(coordinate[0], coordinate[1], coordinate[2]); - listener.lineEnd(); -} - -function d3_geo_streamPolygon(coordinates, listener) { - var i = -1, n = coordinates.length; - listener.polygonStart(); - while (++i < n) d3_geo_streamLine(coordinates[i], listener, 1); - listener.polygonEnd(); -} - -d3.geo.area = function(object) { - d3_geo_areaSum = 0; - d3.geo.stream(object, d3_geo_area); - return d3_geo_areaSum; -}; - -var d3_geo_areaSum, - d3_geo_areaRingSum = new d3_adder; - -var d3_geo_area = { - sphere: function() { d3_geo_areaSum += 4 * π; }, - point: d3_noop, - lineStart: d3_noop, - lineEnd: d3_noop, - - // Only count area for polygon rings. - polygonStart: function() { - d3_geo_areaRingSum.reset(); - d3_geo_area.lineStart = d3_geo_areaRingStart; - }, - polygonEnd: function() { - var area = 2 * d3_geo_areaRingSum; - d3_geo_areaSum += area < 0 ? 4 * π + area : area; - d3_geo_area.lineStart = d3_geo_area.lineEnd = d3_geo_area.point = d3_noop; - } -}; - -function d3_geo_areaRingStart() { - var λ00, φ00, λ0, cosφ0, sinφ0; // start point and previous point - - // For the first point, … - d3_geo_area.point = function(λ, φ) { - d3_geo_area.point = nextPoint; - λ0 = (λ00 = λ) * d3_radians, cosφ0 = Math.cos(φ = (φ00 = φ) * d3_radians / 2 + π / 4), sinφ0 = Math.sin(φ); - }; - // For subsequent points, … - function nextPoint(λ, φ) { - λ *= d3_radians; - φ = φ * d3_radians / 2 + π / 4; // half the angular distance from south pole + function classedAdd(node, names) { + var list = classList(node), i = -1, n = names.length; + while (++i < n) list.add(names[i]); + } - // Spherical excess E for a spherical triangle with vertices: south pole, - // previous point, current point. Uses a formula derived from Cagnoli’s - // theorem. See Todhunter, Spherical Trig. (1871), Sec. 103, Eq. (2). - var dλ = λ - λ0, - cosφ = Math.cos(φ), - sinφ = Math.sin(φ), - k = sinφ0 * sinφ, - u = cosφ0 * cosφ + k * Math.cos(dλ), - v = k * Math.sin(dλ); - d3_geo_areaRingSum.add(Math.atan2(v, u)); + function classedRemove(node, names) { + var list = classList(node), i = -1, n = names.length; + while (++i < n) list.remove(names[i]); + } - // Advance the previous points. - λ0 = λ, cosφ0 = cosφ, sinφ0 = sinφ; + function classedTrue(names) { + return function() { + classedAdd(this, names); + }; } - // For the last point, return to the start. - d3_geo_area.lineEnd = function() { - nextPoint(λ00, φ00); - }; -} -// TODO -// cross and scale return new vectors, -// whereas add and normalize operate in-place - -function d3_geo_cartesian(spherical) { - var λ = spherical[0], - φ = spherical[1], - cosφ = Math.cos(φ); - return [ - cosφ * Math.cos(λ), - cosφ * Math.sin(λ), - Math.sin(φ) - ]; -} + function classedFalse(names) { + return function() { + classedRemove(this, names); + }; + } -function d3_geo_cartesianDot(a, b) { - return a[0] * b[0] + a[1] * b[1] + a[2] * b[2]; -} + function classedFunction(names, value) { + return function() { + (value.apply(this, arguments) ? classedAdd : classedRemove)(this, names); + }; + } -function d3_geo_cartesianCross(a, b) { - return [ - a[1] * b[2] - a[2] * b[1], - a[2] * b[0] - a[0] * b[2], - a[0] * b[1] - a[1] * b[0] - ]; -} - -function d3_geo_cartesianAdd(a, b) { - a[0] += b[0]; - a[1] += b[1]; - a[2] += b[2]; -} - -function d3_geo_cartesianScale(vector, k) { - return [ - vector[0] * k, - vector[1] * k, - vector[2] * k - ]; -} - -function d3_geo_cartesianNormalize(d) { - var l = Math.sqrt(d[0] * d[0] + d[1] * d[1] + d[2] * d[2]); - d[0] /= l; - d[1] /= l; - d[2] /= l; -} - -function d3_geo_pointInPolygon(point, polygon) { - var meridian = point[0], - parallel = point[1], - meridianNormal = [Math.sin(meridian), -Math.cos(meridian), 0], - polarAngle = 0, - winding = 0; - d3_geo_areaRingSum.reset(); - - for (var i = 0, n = polygon.length; i < n; ++i) { - var ring = polygon[i], - m = ring.length; - if (!m) continue; - var point0 = ring[0], - λ0 = point0[0], - φ0 = point0[1] / 2 + π / 4, - sinφ0 = Math.sin(φ0), - cosφ0 = Math.cos(φ0), - j = 1; + function selection_classed(name, value) { + var names = classArray(name + ""); - while (true) { - if (j === m) j = 0; - point = ring[j]; - var λ = point[0], - φ = point[1] / 2 + π / 4, - sinφ = Math.sin(φ), - cosφ = Math.cos(φ), - dλ = λ - λ0, - antimeridian = abs(dλ) > π, - k = sinφ0 * sinφ; - d3_geo_areaRingSum.add(Math.atan2(k * Math.sin(dλ), cosφ0 * cosφ + k * Math.cos(dλ))); - - polarAngle += antimeridian ? dλ + (dλ >= 0 ? τ : -τ): dλ; - - // Are the longitudes either side of the point's meridian, and are the - // latitudes smaller than the parallel? - if (antimeridian ^ λ0 >= meridian ^ λ >= meridian) { - var arc = d3_geo_cartesianCross(d3_geo_cartesian(point0), d3_geo_cartesian(point)); - d3_geo_cartesianNormalize(arc); - var intersection = d3_geo_cartesianCross(meridianNormal, arc); - d3_geo_cartesianNormalize(intersection); - var φarc = (antimeridian ^ dλ >= 0 ? -1 : 1) * d3_asin(intersection[2]); - if (parallel > φarc || parallel === φarc && (arc[0] || arc[1])) { - winding += antimeridian ^ dλ >= 0 ? 1 : -1; - } - } - if (!j++) break; - λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ, point0 = point; + if (arguments.length < 2) { + var list = classList(this.node()), i = -1, n = names.length; + while (++i < n) if (!list.contains(names[i])) return false; + return true; } - } - // First, determine whether the South pole is inside or outside: - // - // It is inside if: - // * the polygon winds around it in a clockwise direction. - // * the polygon does not (cumulatively) wind around it, but has a negative - // (counter-clockwise) area. - // - // Second, count the (signed) number of times a segment crosses a meridian - // from the point to the South pole. If it is zero, then the point is the - // same side as the South pole. - - return (polarAngle < -ε || polarAngle < ε && d3_geo_areaRingSum < 0) ^ (winding & 1); -} - -var d3_geo_clipAntimeridian = d3_geo_clip( - d3_true, - d3_geo_clipAntimeridianLine, - d3_geo_clipAntimeridianInterpolate, - [-π, -π / 2]); - -// Takes a line and cuts into visible segments. Return values: -// 0: there were intersections or the line was empty. -// 1: no intersections. -// 2: there were intersections, and the first and last segments should be -// rejoined. -function d3_geo_clipAntimeridianLine(listener) { - var λ0 = NaN, - φ0 = NaN, - sλ0 = NaN, - clean; // no intersections - - return { - lineStart: function() { - listener.lineStart(); - clean = 1; - }, - point: function(λ1, φ1) { - var sλ1 = λ1 > 0 ? π : -π, - dλ = abs(λ1 - λ0); - if (abs(dλ - π) < ε) { // line crosses a pole - listener.point(λ0, φ0 = (φ0 + φ1) / 2 > 0 ? halfπ : -halfπ); - listener.point(sλ0, φ0); - listener.lineEnd(); - listener.lineStart(); - listener.point(sλ1, φ0); - listener.point( λ1, φ0); - clean = 0; - } else if (sλ0 !== sλ1 && dλ >= π) { // line crosses antimeridian - // handle degeneracies - if (abs(λ0 - sλ0) < ε) λ0 -= sλ0 * ε; - if (abs(λ1 - sλ1) < ε) λ1 -= sλ1 * ε; - φ0 = d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1); - listener.point(sλ0, φ0); - listener.lineEnd(); - listener.lineStart(); - listener.point(sλ1, φ0); - clean = 0; - } - listener.point(λ0 = λ1, φ0 = φ1); - sλ0 = sλ1; - }, - lineEnd: function() { - listener.lineEnd(); - λ0 = φ0 = NaN; - }, - // if there are intersections, we always rejoin the first and last segments. - clean: function() { return 2 - clean; } - }; -} - -function d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1) { - var cosφ0, - cosφ1, - sinλ0_λ1 = Math.sin(λ0 - λ1); - return abs(sinλ0_λ1) > ε - ? Math.atan((Math.sin(φ0) * (cosφ1 = Math.cos(φ1)) * Math.sin(λ1) - - Math.sin(φ1) * (cosφ0 = Math.cos(φ0)) * Math.sin(λ0)) - / (cosφ0 * cosφ1 * sinλ0_λ1)) - : (φ0 + φ1) / 2; -} - -function d3_geo_clipAntimeridianInterpolate(from, to, direction, listener) { - var φ; - if (from == null) { - φ = direction * halfπ; - listener.point(-π, φ); - listener.point( 0, φ); - listener.point( π, φ); - listener.point( π, 0); - listener.point( π, -φ); - listener.point( 0, -φ); - listener.point(-π, -φ); - listener.point(-π, 0); - listener.point(-π, φ); - } else if (abs(from[0] - to[0]) > ε) { - var s = from[0] < to[0] ? π : -π; - φ = direction * s / 2; - listener.point(-s, φ); - listener.point( 0, φ); - listener.point( s, φ); - } else { - listener.point(to[0], to[1]); + return this.each((typeof value === "function" + ? classedFunction : value + ? classedTrue + : classedFalse)(names, value)); } -} -function d3_geo_equirectangular(λ, φ) { - return [λ, φ]; -} + function textRemove() { + this.textContent = ""; + } -(d3.geo.equirectangular = function() { - return d3_geo_projection(d3_geo_equirectangular); -}).raw = d3_geo_equirectangular.invert = d3_geo_equirectangular; + function textConstant(value) { + return function() { + this.textContent = value; + }; + } -d3.geo.rotation = function(rotate) { - rotate = d3_geo_rotation(rotate[0] % 360 * d3_radians, rotate[1] * d3_radians, rotate.length > 2 ? rotate[2] * d3_radians : 0); + function textFunction(value) { + return function() { + var v = value.apply(this, arguments); + this.textContent = v == null ? "" : v; + }; + } - function forward(coordinates) { - coordinates = rotate(coordinates[0] * d3_radians, coordinates[1] * d3_radians); - return coordinates[0] *= d3_degrees, coordinates[1] *= d3_degrees, coordinates; + function selection_text(value) { + return arguments.length + ? this.each(value == null + ? textRemove : (typeof value === "function" + ? textFunction + : textConstant)(value)) + : this.node().textContent; } - forward.invert = function(coordinates) { - coordinates = rotate.invert(coordinates[0] * d3_radians, coordinates[1] * d3_radians); - return coordinates[0] *= d3_degrees, coordinates[1] *= d3_degrees, coordinates; - }; + function htmlRemove() { + this.innerHTML = ""; + } - return forward; -}; + function htmlConstant(value) { + return function() { + this.innerHTML = value; + }; + } -function d3_geo_identityRotation(λ, φ) { - return [λ > π ? λ - τ : λ < -π ? λ + τ : λ, φ]; -} + function htmlFunction(value) { + return function() { + var v = value.apply(this, arguments); + this.innerHTML = v == null ? "" : v; + }; + } -d3_geo_identityRotation.invert = d3_geo_equirectangular; + function selection_html(value) { + return arguments.length + ? this.each(value == null + ? htmlRemove : (typeof value === "function" + ? htmlFunction + : htmlConstant)(value)) + : this.node().innerHTML; + } -// Note: |δλ| must be < 2π -function d3_geo_rotation(δλ, δφ, δγ) { - return δλ ? (δφ || δγ ? d3_geo_compose(d3_geo_rotationλ(δλ), d3_geo_rotationφγ(δφ, δγ)) - : d3_geo_rotationλ(δλ)) - : (δφ || δγ ? d3_geo_rotationφγ(δφ, δγ) - : d3_geo_identityRotation); -} + function raise() { + if (this.nextSibling) this.parentNode.appendChild(this); + } -function d3_geo_forwardRotationλ(δλ) { - return function(λ, φ) { - return λ += δλ, [λ > π ? λ - τ : λ < -π ? λ + τ : λ, φ]; - }; -} - -function d3_geo_rotationλ(δλ) { - var rotation = d3_geo_forwardRotationλ(δλ); - rotation.invert = d3_geo_forwardRotationλ(-δλ); - return rotation; -} - -function d3_geo_rotationφγ(δφ, δγ) { - var cosδφ = Math.cos(δφ), - sinδφ = Math.sin(δφ), - cosδγ = Math.cos(δγ), - sinδγ = Math.sin(δγ); - - function rotation(λ, φ) { - var cosφ = Math.cos(φ), - x = Math.cos(λ) * cosφ, - y = Math.sin(λ) * cosφ, - z = Math.sin(φ), - k = z * cosδφ + x * sinδφ; - return [ - Math.atan2(y * cosδγ - k * sinδγ, x * cosδφ - z * sinδφ), - d3_asin(k * cosδγ + y * sinδγ) - ]; + function selection_raise() { + return this.each(raise); } - rotation.invert = function(λ, φ) { - var cosφ = Math.cos(φ), - x = Math.cos(λ) * cosφ, - y = Math.sin(λ) * cosφ, - z = Math.sin(φ), - k = z * cosδγ - y * sinδγ; - return [ - Math.atan2(y * cosδγ + z * sinδγ, x * cosδφ + k * sinδφ), - d3_asin(k * cosδφ - x * sinδφ) - ]; - }; + function lower() { + if (this.previousSibling) this.parentNode.insertBefore(this, this.parentNode.firstChild); + } - return rotation; -} + function selection_lower() { + return this.each(lower); + } -d3.geo.circle = function() { - var origin = [0, 0], - angle, - precision = 6, - interpolate; + function selection_append(name) { + var create = typeof name === "function" ? name : creator(name); + return this.select(function() { + return this.appendChild(create.apply(this, arguments)); + }); + } - function circle() { - var center = typeof origin === "function" ? origin.apply(this, arguments) : origin, - rotate = d3_geo_rotation(-center[0] * d3_radians, -center[1] * d3_radians, 0).invert, - ring = []; + function constantNull() { + return null; + } - interpolate(null, null, 1, { - point: function(x, y) { - ring.push(x = rotate(x, y)); - x[0] *= d3_degrees, x[1] *= d3_degrees; - } + function selection_insert(name, before) { + var create = typeof name === "function" ? name : creator(name), + select = before == null ? constantNull : typeof before === "function" ? before : selector(before); + return this.select(function() { + return this.insertBefore(create.apply(this, arguments), select.apply(this, arguments) || null); }); + } - return {type: "Polygon", coordinates: [ring]}; + function remove() { + var parent = this.parentNode; + if (parent) parent.removeChild(this); } - circle.origin = function(x) { - if (!arguments.length) return origin; - origin = x; - return circle; - }; + function selection_remove() { + return this.each(remove); + } - circle.angle = function(x) { - if (!arguments.length) return angle; - interpolate = d3_geo_circleInterpolate((angle = +x) * d3_radians, precision * d3_radians); - return circle; - }; + function selection_cloneShallow() { + return this.parentNode.insertBefore(this.cloneNode(false), this.nextSibling); + } - circle.precision = function(_) { - if (!arguments.length) return precision; - interpolate = d3_geo_circleInterpolate(angle * d3_radians, (precision = +_) * d3_radians); - return circle; - }; + function selection_cloneDeep() { + return this.parentNode.insertBefore(this.cloneNode(true), this.nextSibling); + } - return circle.angle(90); -}; - -// Interpolates along a circle centered at [0°, 0°], with a given radius and -// precision. -function d3_geo_circleInterpolate(radius, precision) { - var cr = Math.cos(radius), - sr = Math.sin(radius); - return function(from, to, direction, listener) { - var step = direction * precision; - if (from != null) { - from = d3_geo_circleAngle(cr, from); - to = d3_geo_circleAngle(cr, to); - if (direction > 0 ? from < to: from > to) from += direction * τ; - } else { - from = radius + direction * τ; - to = radius - .5 * step; - } - for (var point, t = from; direction > 0 ? t > to : t < to; t -= step) { - listener.point((point = d3_geo_spherical([ - cr, - -sr * Math.cos(t), - -sr * Math.sin(t) - ]))[0], point[1]); - } - }; -} - -// Signed angle of a cartesian point relative to [cr, 0, 0]. -function d3_geo_circleAngle(cr, point) { - var a = d3_geo_cartesian(point); - a[0] -= cr; - d3_geo_cartesianNormalize(a); - var angle = d3_acos(-a[1]); - return ((-a[2] < 0 ? -angle : angle) + 2 * Math.PI - ε) % (2 * Math.PI); -} - -// Clip features against a small circle centered at [0°, 0°]. -function d3_geo_clipCircle(radius) { - var cr = Math.cos(radius), - smallRadius = cr > 0, - notHemisphere = abs(cr) > ε, // TODO optimise for this common case - interpolate = d3_geo_circleInterpolate(radius, 6 * d3_radians); - - return d3_geo_clip(visible, clipLine, interpolate, smallRadius ? [0, -radius] : [-π, radius - π]); - - function visible(λ, φ) { - return Math.cos(λ) * Math.cos(φ) > cr; - } - - // Takes a line and cuts into visible segments. Return values used for - // polygon clipping: - // 0: there were intersections or the line was empty. - // 1: no intersections. - // 2: there were intersections, and the first and last segments should be - // rejoined. - function clipLine(listener) { - var point0, // previous point - c0, // code for previous point - v0, // visibility of previous point - v00, // visibility of first point - clean; // no intersections - return { - lineStart: function() { - v00 = v0 = false; - clean = 1; - }, - point: function(λ, φ) { - var point1 = [λ, φ], - point2, - v = visible(λ, φ), - c = smallRadius - ? v ? 0 : code(λ, φ) - : v ? code(λ + (λ < 0 ? π : -π), φ) : 0; - if (!point0 && (v00 = v0 = v)) listener.lineStart(); - // Handle degeneracies. - // TODO ignore if not clipping polygons. - if (v !== v0) { - point2 = intersect(point0, point1); - if (d3_geo_sphericalEqual(point0, point2) || d3_geo_sphericalEqual(point1, point2)) { - point1[0] += ε; - point1[1] += ε; - v = visible(point1[0], point1[1]); - } - } - if (v !== v0) { - clean = 0; - if (v) { - // outside going in - listener.lineStart(); - point2 = intersect(point1, point0); - listener.point(point2[0], point2[1]); - } else { - // inside going out - point2 = intersect(point0, point1); - listener.point(point2[0], point2[1]); - listener.lineEnd(); - } - point0 = point2; - } else if (notHemisphere && point0 && smallRadius ^ v) { - var t; - // If the codes for two points are different, or are both zero, - // and there this segment intersects with the small circle. - if (!(c & c0) && (t = intersect(point1, point0, true))) { - clean = 0; - if (smallRadius) { - listener.lineStart(); - listener.point(t[0][0], t[0][1]); - listener.point(t[1][0], t[1][1]); - listener.lineEnd(); - } else { - listener.point(t[1][0], t[1][1]); - listener.lineEnd(); - listener.lineStart(); - listener.point(t[0][0], t[0][1]); - } - } - } - if (v && (!point0 || !d3_geo_sphericalEqual(point0, point1))) { - listener.point(point1[0], point1[1]); - } - point0 = point1, v0 = v, c0 = c; - }, - lineEnd: function() { - if (v0) listener.lineEnd(); - point0 = null; - }, - // Rejoin first and last segments if there were intersections and the first - // and last points were visible. - clean: function() { return clean | ((v00 && v0) << 1); } - }; + function selection_clone(deep) { + return this.select(deep ? selection_cloneDeep : selection_cloneShallow); } - // Intersects the great circle between a and b with the clip circle. - function intersect(a, b, two) { - var pa = d3_geo_cartesian(a), - pb = d3_geo_cartesian(b); - - // We have two planes, n1.p = d1 and n2.p = d2. - // Find intersection line p(t) = c1 n1 + c2 n2 + t (n1 ⨯ n2). - var n1 = [1, 0, 0], // normal - n2 = d3_geo_cartesianCross(pa, pb), - n2n2 = d3_geo_cartesianDot(n2, n2), - n1n2 = n2[0], // d3_geo_cartesianDot(n1, n2), - determinant = n2n2 - n1n2 * n1n2; - - // Two polar points. - if (!determinant) return !two && a; - - var c1 = cr * n2n2 / determinant, - c2 = -cr * n1n2 / determinant, - n1xn2 = d3_geo_cartesianCross(n1, n2), - A = d3_geo_cartesianScale(n1, c1), - B = d3_geo_cartesianScale(n2, c2); - d3_geo_cartesianAdd(A, B); - - // Solve |p(t)|^2 = 1. - var u = n1xn2, - w = d3_geo_cartesianDot(A, u), - uu = d3_geo_cartesianDot(u, u), - t2 = w * w - uu * (d3_geo_cartesianDot(A, A) - 1); - - if (t2 < 0) return; - - var t = Math.sqrt(t2), - q = d3_geo_cartesianScale(u, (-w - t) / uu); - d3_geo_cartesianAdd(q, A); - q = d3_geo_spherical(q); - if (!two) return q; - - // Two intersection points. - var λ0 = a[0], - λ1 = b[0], - φ0 = a[1], - φ1 = b[1], - z; - if (λ1 < λ0) z = λ0, λ0 = λ1, λ1 = z; - var δλ = λ1 - λ0, - polar = abs(δλ - π) < ε, - meridian = polar || δλ < ε; - - if (!polar && φ1 < φ0) z = φ0, φ0 = φ1, φ1 = z; - - // Check that the first point is between a and b. - if (meridian - ? polar - ? φ0 + φ1 > 0 ^ q[1] < (abs(q[0] - λ0) < ε ? φ0 : φ1) - : φ0 <= q[1] && q[1] <= φ1 - : δλ > π ^ (λ0 <= q[0] && q[0] <= λ1)) { - var q1 = d3_geo_cartesianScale(u, (-w + t) / uu); - d3_geo_cartesianAdd(q1, A); - return [q, d3_geo_spherical(q1)]; - } - } - - // Generates a 4-bit vector representing the location of a point relative to - // the small circle's bounding box. - function code(λ, φ) { - var r = smallRadius ? radius : π - radius, - code = 0; - if (λ < -r) code |= 1; // left - else if (λ > r) code |= 2; // right - if (φ < -r) code |= 4; // below - else if (φ > r) code |= 8; // above - return code; - } -} - -// Liang–Barsky line clipping. -function d3_geom_clipLine(x0, y0, x1, y1) { - return function(line) { - var a = line.a, - b = line.b, - ax = a.x, - ay = a.y, - bx = b.x, - by = b.y, - t0 = 0, - t1 = 1, - dx = bx - ax, - dy = by - ay, - r; + function selection_datum(value) { + return arguments.length + ? this.property("__data__", value) + : this.node().__data__; + } - r = x0 - ax; - if (!dx && r > 0) return; - r /= dx; - if (dx < 0) { - if (r < t0) return; - if (r < t1) t1 = r; - } else if (dx > 0) { - if (r > t1) return; - if (r > t0) t0 = r; - } + var filterEvents = {}; - r = x1 - ax; - if (!dx && r < 0) return; - r /= dx; - if (dx < 0) { - if (r > t1) return; - if (r > t0) t0 = r; - } else if (dx > 0) { - if (r < t0) return; - if (r < t1) t1 = r; - } + var event = null; - r = y0 - ay; - if (!dy && r > 0) return; - r /= dy; - if (dy < 0) { - if (r < t0) return; - if (r < t1) t1 = r; - } else if (dy > 0) { - if (r > t1) return; - if (r > t0) t0 = r; + if (typeof document !== "undefined") { + var element$1 = document.documentElement; + if (!("onmouseenter" in element$1)) { + filterEvents = {mouseenter: "mouseover", mouseleave: "mouseout"}; } + } - r = y1 - ay; - if (!dy && r < 0) return; - r /= dy; - if (dy < 0) { - if (r > t1) return; - if (r > t0) t0 = r; - } else if (dy > 0) { - if (r < t0) return; - if (r < t1) t1 = r; - } + function filterContextListener(listener, index, group) { + listener = contextListener(listener, index, group); + return function(event) { + var related = event.relatedTarget; + if (!related || (related !== this && !(related.compareDocumentPosition(this) & 8))) { + listener.call(this, event); + } + }; + } - if (t0 > 0) line.a = {x: ax + t0 * dx, y: ay + t0 * dy}; - if (t1 < 1) line.b = {x: ax + t1 * dx, y: ay + t1 * dy}; - return line; - }; -} - -var d3_geo_clipExtentMAX = 1e9; - -d3.geo.clipExtent = function() { - var x0, y0, x1, y1, - stream, - clip, - clipExtent = { - stream: function(output) { - if (stream) stream.valid = false; - stream = clip(output); - stream.valid = true; // allow caching by d3.geo.path - return stream; - }, - extent: function(_) { - if (!arguments.length) return [[x0, y0], [x1, y1]]; - clip = d3_geo_clipExtent(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]); - if (stream) stream.valid = false, stream = null; - return clipExtent; + function contextListener(listener, index, group) { + return function(event1) { + var event0 = event; // Events can be reentrant (e.g., focus). + event = event1; + try { + listener.call(this, this.__data__, index, group); + } finally { + event = event0; + } + }; + } + + function parseTypenames$1(typenames) { + return typenames.trim().split(/^|\s+/).map(function(t) { + var name = "", i = t.indexOf("."); + if (i >= 0) name = t.slice(i + 1), t = t.slice(0, i); + return {type: t, name: name}; + }); + } + + function onRemove(typename) { + return function() { + var on = this.__on; + if (!on) return; + for (var j = 0, i = -1, m = on.length, o; j < m; ++j) { + if (o = on[j], (!typename.type || o.type === typename.type) && o.name === typename.name) { + this.removeEventListener(o.type, o.listener, o.capture); + } else { + on[++i] = o; } - }; - return clipExtent.extent([[0, 0], [960, 500]]); -}; - -function d3_geo_clipExtent(x0, y0, x1, y1) { - return function(listener) { - var listener_ = listener, - bufferListener = d3_geo_clipBufferListener(), - clipLine = d3_geom_clipLine(x0, y0, x1, y1), - segments, - polygon, - ring; - - var clip = { - point: point, - lineStart: lineStart, - lineEnd: lineEnd, - polygonStart: function() { - listener = bufferListener; - segments = []; - polygon = []; - clean = true; - }, - polygonEnd: function() { - listener = listener_; - segments = d3.merge(segments); - var clipStartInside = insidePolygon([x0, y1]), - inside = clean && clipStartInside, - visible = segments.length; - if (inside || visible) { - listener.polygonStart(); - if (inside) { - listener.lineStart(); - interpolate(null, null, 1, listener); - listener.lineEnd(); - } - if (visible) { - d3_geo_clipPolygon(segments, compare, clipStartInside, interpolate, listener); - } - listener.polygonEnd(); + } + if (++i) on.length = i; + else delete this.__on; + }; + } + + function onAdd(typename, value, capture) { + var wrap = filterEvents.hasOwnProperty(typename.type) ? filterContextListener : contextListener; + return function(d, i, group) { + var on = this.__on, o, listener = wrap(value, i, group); + if (on) for (var j = 0, m = on.length; j < m; ++j) { + if ((o = on[j]).type === typename.type && o.name === typename.name) { + this.removeEventListener(o.type, o.listener, o.capture); + this.addEventListener(o.type, o.listener = listener, o.capture = capture); + o.value = value; + return; } - segments = polygon = ring = null; } + this.addEventListener(typename.type, listener, capture); + o = {type: typename.type, name: typename.name, value: value, listener: listener, capture: capture}; + if (!on) this.__on = [o]; + else on.push(o); }; + } - function insidePolygon(p) { - var wn = 0, // the winding number counter - n = polygon.length, - y = p[1]; + function selection_on(typename, value, capture) { + var typenames = parseTypenames$1(typename + ""), i, n = typenames.length, t; - for (var i = 0; i < n; ++i) { - for (var j = 1, v = polygon[i], m = v.length, a = v[0], b; j < m; ++j) { - b = v[j]; - if (a[1] <= y) { - if (b[1] > y && isLeft(a, b, p) > 0) ++wn; - } else { - if (b[1] <= y && isLeft(a, b, p) < 0) --wn; + if (arguments.length < 2) { + var on = this.node().__on; + if (on) for (var j = 0, m = on.length, o; j < m; ++j) { + for (i = 0, o = on[j]; i < n; ++i) { + if ((t = typenames[i]).type === o.type && t.name === o.name) { + return o.value; } - a = b; } } - return wn !== 0; + return; } - function isLeft(a, b, c) { - return (b[0] - a[0]) * (c[1] - a[1]) - (c[0] - a[0]) * (b[1] - a[1]); - } + on = value ? onAdd : onRemove; + if (capture == null) capture = false; + for (i = 0; i < n; ++i) this.each(on(typenames[i], value, capture)); + return this; + } - function interpolate(from, to, direction, listener) { - var a = 0, a1 = 0; - if (from == null || - (a = corner(from, direction)) !== (a1 = corner(to, direction)) || - comparePoints(from, to) < 0 ^ direction > 0) { - do { - listener.point(a === 0 || a === 3 ? x0 : x1, a > 1 ? y1 : y0); - } while ((a = (a + direction + 4) % 4) !== a1); - } else { - listener.point(to[0], to[1]); - } + function customEvent(event1, listener, that, args) { + var event0 = event; + event1.sourceEvent = event; + event = event1; + try { + return listener.apply(that, args); + } finally { + event = event0; } + } - function pointVisible(x, y) { - return x0 <= x && x <= x1 && y0 <= y && y <= y1; - } + function dispatchEvent(node, type, params) { + var window = defaultView(node), + event = window.CustomEvent; - function point(x, y) { - if (pointVisible(x, y)) listener.point(x, y); + if (typeof event === "function") { + event = new event(type, params); + } else { + event = window.document.createEvent("Event"); + if (params) event.initEvent(type, params.bubbles, params.cancelable), event.detail = params.detail; + else event.initEvent(type, false, false); } - var x__, y__, v__, // first point - x_, y_, v_, // previous point - first, - clean; + node.dispatchEvent(event); + } - function lineStart() { - clip.point = linePoint; - if (polygon) polygon.push(ring = []); - first = true; - v_ = false; - x_ = y_ = NaN; - } + function dispatchConstant(type, params) { + return function() { + return dispatchEvent(this, type, params); + }; + } - function lineEnd() { - // TODO rather than special-case polygons, simply handle them separately. - // Ideally, coincident intersection points should be jittered to avoid - // clipping issues. - if (segments) { - linePoint(x__, y__); - if (v__ && v_) bufferListener.rejoin(); - segments.push(bufferListener.buffer()); - } - clip.point = point; - if (v_) listener.lineEnd(); - } - - function linePoint(x, y) { - x = Math.max(-d3_geo_clipExtentMAX, Math.min(d3_geo_clipExtentMAX, x)); - y = Math.max(-d3_geo_clipExtentMAX, Math.min(d3_geo_clipExtentMAX, y)); - var v = pointVisible(x, y); - if (polygon) ring.push([x, y]); - if (first) { - x__ = x, y__ = y, v__ = v; - first = false; - if (v) { - listener.lineStart(); - listener.point(x, y); - } - } else { - if (v && v_) listener.point(x, y); - else { - var l = {a: {x: x_, y: y_}, b: {x: x, y: y}}; - if (clipLine(l)) { - if (!v_) { - listener.lineStart(); - listener.point(l.a.x, l.a.y); - } - listener.point(l.b.x, l.b.y); - if (!v) listener.lineEnd(); - clean = false; - } else if (v) { - listener.lineStart(); - listener.point(x, y); - clean = false; - } - } - } - x_ = x, y_ = y, v_ = v; - } - - return clip; - }; - - function corner(p, direction) { - return abs(p[0] - x0) < ε ? direction > 0 ? 0 : 3 - : abs(p[0] - x1) < ε ? direction > 0 ? 2 : 1 - : abs(p[1] - y0) < ε ? direction > 0 ? 1 : 0 - : direction > 0 ? 3 : 2; // abs(p[1] - y1) < ε + function dispatchFunction(type, params) { + return function() { + return dispatchEvent(this, type, params.apply(this, arguments)); + }; } - function compare(a, b) { - return comparePoints(a.x, b.x); + function selection_dispatch(type, params) { + return this.each((typeof params === "function" + ? dispatchFunction + : dispatchConstant)(type, params)); } - function comparePoints(a, b) { - var ca = corner(a, 1), - cb = corner(b, 1); - return ca !== cb ? ca - cb - : ca === 0 ? b[1] - a[1] - : ca === 1 ? a[0] - b[0] - : ca === 2 ? a[1] - b[1] - : b[0] - a[0]; + var root = [null]; + + function Selection(groups, parents) { + this._groups = groups; + this._parents = parents; } -} -function d3_geo_compose(a, b) { - function compose(x, y) { - return x = a(x, y), b(x[0], x[1]); + function selection() { + return new Selection([[document.documentElement]], root); } - if (a.invert && b.invert) compose.invert = function(x, y) { - return x = b.invert(x, y), x && a.invert(x[0], x[1]); + Selection.prototype = selection.prototype = { + constructor: Selection, + select: selection_select, + selectAll: selection_selectAll, + filter: selection_filter, + data: selection_data, + enter: selection_enter, + exit: selection_exit, + merge: selection_merge, + order: selection_order, + sort: selection_sort, + call: selection_call, + nodes: selection_nodes, + node: selection_node, + size: selection_size, + empty: selection_empty, + each: selection_each, + attr: selection_attr, + style: selection_style, + property: selection_property, + classed: selection_classed, + text: selection_text, + html: selection_html, + raise: selection_raise, + lower: selection_lower, + append: selection_append, + insert: selection_insert, + remove: selection_remove, + clone: selection_clone, + datum: selection_datum, + on: selection_on, + dispatch: selection_dispatch }; - return compose; -} - -function d3_geo_conic(projectAt) { - var φ0 = 0, - φ1 = π / 3, - m = d3_geo_projectionMutator(projectAt), - p = m(φ0, φ1); + function select(selector) { + return typeof selector === "string" + ? new Selection([[document.querySelector(selector)]], [document.documentElement]) + : new Selection([[selector]], root); + } - p.parallels = function(_) { - if (!arguments.length) return [φ0 / π * 180, φ1 / π * 180]; - return m(φ0 = _[0] * π / 180, φ1 = _[1] * π / 180); - }; + function create(name) { + return select(creator(name).call(document.documentElement)); + } - return p; -} + var nextId = 0; -function d3_geo_conicEqualArea(φ0, φ1) { - var sinφ0 = Math.sin(φ0), - n = (sinφ0 + Math.sin(φ1)) / 2, - C = 1 + sinφ0 * (2 * n - sinφ0), - ρ0 = Math.sqrt(C) / n; + function local() { + return new Local; + } - function forward(λ, φ) { - var ρ = Math.sqrt(C - 2 * n * Math.sin(φ)) / n; - return [ - ρ * Math.sin(λ *= n), - ρ0 - ρ * Math.cos(λ) - ]; + function Local() { + this._ = "@" + (++nextId).toString(36); } - forward.invert = function(x, y) { - var ρ0_y = ρ0 - y; - return [ - Math.atan2(x, ρ0_y) / n, - d3_asin((C - (x * x + ρ0_y * ρ0_y) * n * n) / (2 * n)) - ]; + Local.prototype = local.prototype = { + constructor: Local, + get: function(node) { + var id = this._; + while (!(id in node)) if (!(node = node.parentNode)) return; + return node[id]; + }, + set: function(node, value) { + return node[this._] = value; + }, + remove: function(node) { + return this._ in node && delete node[this._]; + }, + toString: function() { + return this._; + } }; - return forward; -} - -(d3.geo.conicEqualArea = function() { - return d3_geo_conic(d3_geo_conicEqualArea); -}).raw = d3_geo_conicEqualArea; - -// ESRI:102003 -d3.geo.albers = function() { - return d3.geo.conicEqualArea() - .rotate([96, 0]) - .center([-.6, 38.7]) - .parallels([29.5, 45.5]) - .scale(1070); -}; - -// A composite projection for the United States, configured by default for -// 960×500. Also works quite well at 960×600 with scale 1285. The set of -// standard parallels for each region comes from USGS, which is published here: -// http://egsc.usgs.gov/isb/pubs/MapProjections/projections.html#albers -d3.geo.albersUsa = function() { - var lower48 = d3.geo.albers(); - - // EPSG:3338 - var alaska = d3.geo.conicEqualArea() - .rotate([154, 0]) - .center([-2, 58.5]) - .parallels([55, 65]); - - // ESRI:102007 - var hawaii = d3.geo.conicEqualArea() - .rotate([157, 0]) - .center([-3, 19.9]) - .parallels([8, 18]); - - var point, - pointStream = {point: function(x, y) { point = [x, y]; }}, - lower48Point, - alaskaPoint, - hawaiiPoint; - - function albersUsa(coordinates) { - var x = coordinates[0], y = coordinates[1]; - point = null; - (lower48Point(x, y), point) - || (alaskaPoint(x, y), point) - || hawaiiPoint(x, y); - return point; - } - - albersUsa.invert = function(coordinates) { - var k = lower48.scale(), - t = lower48.translate(), - x = (coordinates[0] - t[0]) / k, - y = (coordinates[1] - t[1]) / k; - return (y >= .120 && y < .234 && x >= -.425 && x < -.214 ? alaska - : y >= .166 && y < .234 && x >= -.214 && x < -.115 ? hawaii - : lower48).invert(coordinates); - }; + function sourceEvent() { + var current = event, source; + while (source = current.sourceEvent) current = source; + return current; + } - // A naïve multi-projection stream. - // The projections must have mutually exclusive clip regions on the sphere, - // as this will avoid emitting interleaving lines and polygons. - albersUsa.stream = function(stream) { - var lower48Stream = lower48.stream(stream), - alaskaStream = alaska.stream(stream), - hawaiiStream = hawaii.stream(stream); - return { - point: function(x, y) { - lower48Stream.point(x, y); - alaskaStream.point(x, y); - hawaiiStream.point(x, y); - }, - sphere: function() { - lower48Stream.sphere(); - alaskaStream.sphere(); - hawaiiStream.sphere(); - }, - lineStart: function() { - lower48Stream.lineStart(); - alaskaStream.lineStart(); - hawaiiStream.lineStart(); - }, - lineEnd: function() { - lower48Stream.lineEnd(); - alaskaStream.lineEnd(); - hawaiiStream.lineEnd(); - }, - polygonStart: function() { - lower48Stream.polygonStart(); - alaskaStream.polygonStart(); - hawaiiStream.polygonStart(); - }, - polygonEnd: function() { - lower48Stream.polygonEnd(); - alaskaStream.polygonEnd(); - hawaiiStream.polygonEnd(); - } - }; - }; + function point(node, event) { + var svg = node.ownerSVGElement || node; - albersUsa.precision = function(_) { - if (!arguments.length) return lower48.precision(); - lower48.precision(_); - alaska.precision(_); - hawaii.precision(_); - return albersUsa; - }; + if (svg.createSVGPoint) { + var point = svg.createSVGPoint(); + point.x = event.clientX, point.y = event.clientY; + point = point.matrixTransform(node.getScreenCTM().inverse()); + return [point.x, point.y]; + } - albersUsa.scale = function(_) { - if (!arguments.length) return lower48.scale(); - lower48.scale(_); - alaska.scale(_ * .35); - hawaii.scale(_); - return albersUsa.translate(lower48.translate()); - }; + var rect = node.getBoundingClientRect(); + return [event.clientX - rect.left - node.clientLeft, event.clientY - rect.top - node.clientTop]; + } - albersUsa.translate = function(_) { - if (!arguments.length) return lower48.translate(); - var k = lower48.scale(), x = +_[0], y = +_[1]; + function mouse(node) { + var event = sourceEvent(); + if (event.changedTouches) event = event.changedTouches[0]; + return point(node, event); + } - lower48Point = lower48 - .translate(_) - .clipExtent([[x - .455 * k, y - .238 * k], [x + .455 * k, y + .238 * k]]) - .stream(pointStream).point; + function d3_selectAll(selector) { + return typeof selector === "string" + ? new Selection([document.querySelectorAll(selector)], [document.documentElement]) + : new Selection([selector == null ? [] : selector], root); + } - alaskaPoint = alaska - .translate([x - .307 * k, y + .201 * k]) - .clipExtent([[x - .425 * k + ε, y + .120 * k + ε], [x - .214 * k - ε, y + .234 * k - ε]]) - .stream(pointStream).point; + function touch(node, touches, identifier) { + if (arguments.length < 3) identifier = touches, touches = sourceEvent().changedTouches; - hawaiiPoint = hawaii - .translate([x - .205 * k, y + .212 * k]) - .clipExtent([[x - .214 * k + ε, y + .166 * k + ε], [x - .115 * k - ε, y + .234 * k - ε]]) - .stream(pointStream).point; + for (var i = 0, n = touches ? touches.length : 0, touch; i < n; ++i) { + if ((touch = touches[i]).identifier === identifier) { + return point(node, touch); + } + } - return albersUsa; - }; + return null; + } - return albersUsa.scale(1070); -}; + function d3_touches(node, touches) { + if (touches == null) touches = sourceEvent().touches; -d3.geo.bounds = (function() { - var λ0, φ0, λ1, φ1, // bounds - λ_, // previous λ-coordinate - λ__, φ__, // first point - p0, // previous 3D point - dλSum, - ranges, - range; + for (var i = 0, n = touches ? touches.length : 0, points = new Array(n); i < n; ++i) { + points[i] = point(node, touches[i]); + } - var bound = { - point: point, - lineStart: lineStart, - lineEnd: lineEnd, + return points; + } - polygonStart: function() { - bound.point = ringPoint; - bound.lineStart = ringStart; - bound.lineEnd = ringEnd; - dλSum = 0; - d3_geo_area.polygonStart(); - }, - polygonEnd: function() { - d3_geo_area.polygonEnd(); - bound.point = point; - bound.lineStart = lineStart; - bound.lineEnd = lineEnd; - if (d3_geo_areaRingSum < 0) λ0 = -(λ1 = 180), φ0 = -(φ1 = 90); - else if (dλSum > ε) φ1 = 90; - else if (dλSum < -ε) φ0 = -90; - range[0] = λ0, range[1] = λ1; - } - }; + function nopropagation() { + event.stopImmediatePropagation(); + } - function point(λ, φ) { - ranges.push(range = [λ0 = λ, λ1 = λ]); - if (φ < φ0) φ0 = φ; - if (φ > φ1) φ1 = φ; + function noevent() { + event.preventDefault(); + event.stopImmediatePropagation(); } - function linePoint(λ, φ) { - var p = d3_geo_cartesian([λ * d3_radians, φ * d3_radians]); - if (p0) { - var normal = d3_geo_cartesianCross(p0, p), - equatorial = [normal[1], -normal[0], 0], - inflection = d3_geo_cartesianCross(equatorial, normal); - d3_geo_cartesianNormalize(inflection); - inflection = d3_geo_spherical(inflection); - var dλ = λ - λ_, - s = dλ > 0 ? 1 : -1, - λi = inflection[0] * d3_degrees * s, - antimeridian = abs(dλ) > 180; - if (antimeridian ^ (s * λ_ < λi && λi < s * λ)) { - var φi = inflection[1] * d3_degrees; - if (φi > φ1) φ1 = φi; - } else if (λi = (λi + 360) % 360 - 180, antimeridian ^ (s * λ_ < λi && λi < s * λ)) { - var φi = -inflection[1] * d3_degrees; - if (φi < φ0) φ0 = φi; - } else { - if (φ < φ0) φ0 = φ; - if (φ > φ1) φ1 = φ; - } - if (antimeridian) { - if (λ < λ_) { - if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ; - } else { - if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ; - } - } else { - if (λ1 >= λ0) { - if (λ < λ0) λ0 = λ; - if (λ > λ1) λ1 = λ; - } else { - if (λ > λ_) { - if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ; - } else { - if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ; - } - } - } + function nodrag(view) { + var root = view.document.documentElement, + selection$$1 = select(view).on("dragstart.drag", noevent, true); + if ("onselectstart" in root) { + selection$$1.on("selectstart.drag", noevent, true); } else { - point(λ, φ); + root.__noselect = root.style.MozUserSelect; + root.style.MozUserSelect = "none"; } - p0 = p, λ_ = λ; } - function lineStart() { bound.point = linePoint; } - function lineEnd() { - range[0] = λ0, range[1] = λ1; - bound.point = point; - p0 = null; + function yesdrag(view, noclick) { + var root = view.document.documentElement, + selection$$1 = select(view).on("dragstart.drag", null); + if (noclick) { + selection$$1.on("click.drag", noevent, true); + setTimeout(function() { selection$$1.on("click.drag", null); }, 0); + } + if ("onselectstart" in root) { + selection$$1.on("selectstart.drag", null); + } else { + root.style.MozUserSelect = root.__noselect; + delete root.__noselect; + } } - function ringPoint(λ, φ) { - if (p0) { - var dλ = λ - λ_; - dλSum += abs(dλ) > 180 ? dλ + (dλ > 0 ? 360 : -360) : dλ; - } else λ__ = λ, φ__ = φ; - d3_geo_area.point(λ, φ); - linePoint(λ, φ); + function constant$2(x) { + return function() { + return x; + }; } - function ringStart() { - d3_geo_area.lineStart(); + function DragEvent(target, type, subject, id, active, x, y, dx, dy, dispatch) { + this.target = target; + this.type = type; + this.subject = subject; + this.identifier = id; + this.active = active; + this.x = x; + this.y = y; + this.dx = dx; + this.dy = dy; + this._ = dispatch; } - function ringEnd() { - ringPoint(λ__, φ__); - d3_geo_area.lineEnd(); - if (abs(dλSum) > ε) λ0 = -(λ1 = 180); - range[0] = λ0, range[1] = λ1; - p0 = null; + DragEvent.prototype.on = function() { + var value = this._.on.apply(this._, arguments); + return value === this._ ? this : value; + }; + + // Ignore right-click, since that should open the context menu. + function defaultFilter() { + return !event.button; } - // Finds the left-right distance between two longitudes. - // This is almost the same as (λ1 - λ0 + 360°) % 360°, except that we want - // the distance between ±180° to be 360°. - function angle(λ0, λ1) { return (λ1 -= λ0) < 0 ? λ1 + 360 : λ1; } + function defaultContainer() { + return this.parentNode; + } - function compareRanges(a, b) { return a[0] - b[0]; } + function defaultSubject(d) { + return d == null ? {x: event.x, y: event.y} : d; + } - function withinRange(x, range) { - return range[0] <= range[1] ? range[0] <= x && x <= range[1] : x < range[0] || range[1] < x; + function defaultTouchable() { + return "ontouchstart" in this; } - return function(feature) { - φ1 = λ1 = -(λ0 = φ0 = Infinity); - ranges = []; + function drag() { + var filter = defaultFilter, + container = defaultContainer, + subject = defaultSubject, + touchable = defaultTouchable, + gestures = {}, + listeners = dispatch("start", "drag", "end"), + active = 0, + mousedownx, + mousedowny, + mousemoving, + touchending, + clickDistance2 = 0; + + function drag(selection$$1) { + selection$$1 + .on("mousedown.drag", mousedowned) + .filter(touchable) + .on("touchstart.drag", touchstarted) + .on("touchmove.drag", touchmoved) + .on("touchend.drag touchcancel.drag", touchended) + .style("touch-action", "none") + .style("-webkit-tap-highlight-color", "rgba(0,0,0,0)"); + } + + function mousedowned() { + if (touchending || !filter.apply(this, arguments)) return; + var gesture = beforestart("mouse", container.apply(this, arguments), mouse, this, arguments); + if (!gesture) return; + select(event.view).on("mousemove.drag", mousemoved, true).on("mouseup.drag", mouseupped, true); + nodrag(event.view); + nopropagation(); + mousemoving = false; + mousedownx = event.clientX; + mousedowny = event.clientY; + gesture("start"); + } + + function mousemoved() { + noevent(); + if (!mousemoving) { + var dx = event.clientX - mousedownx, dy = event.clientY - mousedowny; + mousemoving = dx * dx + dy * dy > clickDistance2; + } + gestures.mouse("drag"); + } - d3.geo.stream(feature, bound); + function mouseupped() { + select(event.view).on("mousemove.drag mouseup.drag", null); + yesdrag(event.view, mousemoving); + noevent(); + gestures.mouse("end"); + } - var n = ranges.length; - if (n) { - // First, sort ranges by their minimum longitudes. - ranges.sort(compareRanges); + function touchstarted() { + if (!filter.apply(this, arguments)) return; + var touches = event.changedTouches, + c = container.apply(this, arguments), + n = touches.length, i, gesture; - // Then, merge any ranges that overlap. - for (var i = 1, a = ranges[0], b, merged = [a]; i < n; ++i) { - b = ranges[i]; - if (withinRange(b[0], a) || withinRange(b[1], a)) { - if (angle(a[0], b[1]) > angle(a[0], a[1])) a[1] = b[1]; - if (angle(b[0], a[1]) > angle(a[0], a[1])) a[0] = b[0]; - } else { - merged.push(a = b); + for (i = 0; i < n; ++i) { + if (gesture = beforestart(touches[i].identifier, c, touch, this, arguments)) { + nopropagation(); + gesture("start"); } } + } - // Finally, find the largest gap between the merged ranges. - // The final bounding box will be the inverse of this gap. - var best = -Infinity, dλ; - for (var n = merged.length - 1, i = 0, a = merged[n], b; i <= n; a = b, ++i) { - b = merged[i]; - if ((dλ = angle(a[1], b[0])) > best) best = dλ, λ0 = b[0], λ1 = a[1]; + function touchmoved() { + var touches = event.changedTouches, + n = touches.length, i, gesture; + + for (i = 0; i < n; ++i) { + if (gesture = gestures[touches[i].identifier]) { + noevent(); + gesture("drag"); + } } } - ranges = range = null; - return λ0 === Infinity || φ0 === Infinity - ? [[NaN, NaN], [NaN, NaN]] - : [[λ0, φ0], [λ1, φ1]]; - }; -})(); - -d3.geo.centroid = function(object) { - d3_geo_centroidW0 = d3_geo_centroidW1 = - d3_geo_centroidX0 = d3_geo_centroidY0 = d3_geo_centroidZ0 = - d3_geo_centroidX1 = d3_geo_centroidY1 = d3_geo_centroidZ1 = - d3_geo_centroidX2 = d3_geo_centroidY2 = d3_geo_centroidZ2 = 0; - d3.geo.stream(object, d3_geo_centroid); - - var x = d3_geo_centroidX2, - y = d3_geo_centroidY2, - z = d3_geo_centroidZ2, - m = x * x + y * y + z * z; + function touchended() { + var touches = event.changedTouches, + n = touches.length, i, gesture; - // If the area-weighted centroid is undefined, fall back to length-weighted centroid. - if (m < ε2) { - x = d3_geo_centroidX1, y = d3_geo_centroidY1, z = d3_geo_centroidZ1; - // If the feature has zero length, fall back to arithmetic mean of point vectors. - if (d3_geo_centroidW1 < ε) x = d3_geo_centroidX0, y = d3_geo_centroidY0, z = d3_geo_centroidZ0; - m = x * x + y * y + z * z; - // If the feature still has an undefined centroid, then return. - if (m < ε2) return [NaN, NaN]; - } - - return [Math.atan2(y, x) * d3_degrees, d3_asin(z / Math.sqrt(m)) * d3_degrees]; -}; - -var d3_geo_centroidW0, - d3_geo_centroidW1, - d3_geo_centroidX0, - d3_geo_centroidY0, - d3_geo_centroidZ0, - d3_geo_centroidX1, - d3_geo_centroidY1, - d3_geo_centroidZ1, - d3_geo_centroidX2, - d3_geo_centroidY2, - d3_geo_centroidZ2; - -var d3_geo_centroid = { - sphere: d3_noop, - point: d3_geo_centroidPoint, - lineStart: d3_geo_centroidLineStart, - lineEnd: d3_geo_centroidLineEnd, - polygonStart: function() { - d3_geo_centroid.lineStart = d3_geo_centroidRingStart; - }, - polygonEnd: function() { - d3_geo_centroid.lineStart = d3_geo_centroidLineStart; - } -}; - -// Arithmetic mean of Cartesian vectors. -function d3_geo_centroidPoint(λ, φ) { - λ *= d3_radians; - var cosφ = Math.cos(φ *= d3_radians); - d3_geo_centroidPointXYZ(cosφ * Math.cos(λ), cosφ * Math.sin(λ), Math.sin(φ)); -} - -function d3_geo_centroidPointXYZ(x, y, z) { - ++d3_geo_centroidW0; - d3_geo_centroidX0 += (x - d3_geo_centroidX0) / d3_geo_centroidW0; - d3_geo_centroidY0 += (y - d3_geo_centroidY0) / d3_geo_centroidW0; - d3_geo_centroidZ0 += (z - d3_geo_centroidZ0) / d3_geo_centroidW0; -} - -function d3_geo_centroidLineStart() { - var x0, y0, z0; // previous point - - d3_geo_centroid.point = function(λ, φ) { - λ *= d3_radians; - var cosφ = Math.cos(φ *= d3_radians); - x0 = cosφ * Math.cos(λ); - y0 = cosφ * Math.sin(λ); - z0 = Math.sin(φ); - d3_geo_centroid.point = nextPoint; - d3_geo_centroidPointXYZ(x0, y0, z0); - }; + if (touchending) clearTimeout(touchending); + touchending = setTimeout(function() { touchending = null; }, 500); // Ghost clicks are delayed! + for (i = 0; i < n; ++i) { + if (gesture = gestures[touches[i].identifier]) { + nopropagation(); + gesture("end"); + } + } + } - function nextPoint(λ, φ) { - λ *= d3_radians; - var cosφ = Math.cos(φ *= d3_radians), - x = cosφ * Math.cos(λ), - y = cosφ * Math.sin(λ), - z = Math.sin(φ), - w = Math.atan2( - Math.sqrt((w = y0 * z - z0 * y) * w + (w = z0 * x - x0 * z) * w + (w = x0 * y - y0 * x) * w), - x0 * x + y0 * y + z0 * z); - d3_geo_centroidW1 += w; - d3_geo_centroidX1 += w * (x0 + (x0 = x)); - d3_geo_centroidY1 += w * (y0 + (y0 = y)); - d3_geo_centroidZ1 += w * (z0 + (z0 = z)); - d3_geo_centroidPointXYZ(x0, y0, z0); - } -} - -function d3_geo_centroidLineEnd() { - d3_geo_centroid.point = d3_geo_centroidPoint; -} - -// See J. E. Brock, The Inertia Tensor for a Spherical Triangle, -// J. Applied Mechanics 42, 239 (1975). -function d3_geo_centroidRingStart() { - var λ00, φ00, // first point - x0, y0, z0; // previous point + function beforestart(id, container, point$$1, that, args) { + var p = point$$1(container, id), s, dx, dy, + sublisteners = listeners.copy(); - d3_geo_centroid.point = function(λ, φ) { - λ00 = λ, φ00 = φ; - d3_geo_centroid.point = nextPoint; - λ *= d3_radians; - var cosφ = Math.cos(φ *= d3_radians); - x0 = cosφ * Math.cos(λ); - y0 = cosφ * Math.sin(λ); - z0 = Math.sin(φ); - d3_geo_centroidPointXYZ(x0, y0, z0); - }; + if (!customEvent(new DragEvent(drag, "beforestart", s, id, active, p[0], p[1], 0, 0, sublisteners), function() { + if ((event.subject = s = subject.apply(that, args)) == null) return false; + dx = s.x - p[0] || 0; + dy = s.y - p[1] || 0; + return true; + })) return; + + return function gesture(type) { + var p0 = p, n; + switch (type) { + case "start": gestures[id] = gesture, n = active++; break; + case "end": delete gestures[id], --active; // nobreak + case "drag": p = point$$1(container, id), n = active; break; + } + customEvent(new DragEvent(drag, type, s, id, n, p[0] + dx, p[1] + dy, p[0] - p0[0], p[1] - p0[1], sublisteners), sublisteners.apply, sublisteners, [type, that, args]); + }; + } - d3_geo_centroid.lineEnd = function() { - nextPoint(λ00, φ00); - d3_geo_centroid.lineEnd = d3_geo_centroidLineEnd; - d3_geo_centroid.point = d3_geo_centroidPoint; - }; + drag.filter = function(_) { + return arguments.length ? (filter = typeof _ === "function" ? _ : constant$2(!!_), drag) : filter; + }; - function nextPoint(λ, φ) { - λ *= d3_radians; - var cosφ = Math.cos(φ *= d3_radians), - x = cosφ * Math.cos(λ), - y = cosφ * Math.sin(λ), - z = Math.sin(φ), - cx = y0 * z - z0 * y, - cy = z0 * x - x0 * z, - cz = x0 * y - y0 * x, - m = Math.sqrt(cx * cx + cy * cy + cz * cz), - u = x0 * x + y0 * y + z0 * z, - v = m && -d3_acos(u) / m, // area weight - w = Math.atan2(m, u); // line weight - d3_geo_centroidX2 += v * cx; - d3_geo_centroidY2 += v * cy; - d3_geo_centroidZ2 += v * cz; - d3_geo_centroidW1 += w; - d3_geo_centroidX1 += w * (x0 + (x0 = x)); - d3_geo_centroidY1 += w * (y0 + (y0 = y)); - d3_geo_centroidZ1 += w * (z0 + (z0 = z)); - d3_geo_centroidPointXYZ(x0, y0, z0); - } -} - -// TODO Unify this code with d3.geom.polygon area? - -var d3_geo_pathAreaSum, d3_geo_pathAreaPolygon, d3_geo_pathArea = { - point: d3_noop, - lineStart: d3_noop, - lineEnd: d3_noop, - - // Only count area for polygon rings. - polygonStart: function() { - d3_geo_pathAreaPolygon = 0; - d3_geo_pathArea.lineStart = d3_geo_pathAreaRingStart; - }, - polygonEnd: function() { - d3_geo_pathArea.lineStart = d3_geo_pathArea.lineEnd = d3_geo_pathArea.point = d3_noop; - d3_geo_pathAreaSum += abs(d3_geo_pathAreaPolygon / 2); - } -}; - -function d3_geo_pathAreaRingStart() { - var x00, y00, x0, y0; - - // For the first point, … - d3_geo_pathArea.point = function(x, y) { - d3_geo_pathArea.point = nextPoint; - x00 = x0 = x, y00 = y0 = y; - }; + drag.container = function(_) { + return arguments.length ? (container = typeof _ === "function" ? _ : constant$2(_), drag) : container; + }; - // For subsequent points, … - function nextPoint(x, y) { - d3_geo_pathAreaPolygon += y0 * x - x0 * y; - x0 = x, y0 = y; - } + drag.subject = function(_) { + return arguments.length ? (subject = typeof _ === "function" ? _ : constant$2(_), drag) : subject; + }; - // For the last point, return to the start. - d3_geo_pathArea.lineEnd = function() { - nextPoint(x00, y00); - }; -} - -var d3_geo_pathBoundsX0, - d3_geo_pathBoundsY0, - d3_geo_pathBoundsX1, - d3_geo_pathBoundsY1; - -var d3_geo_pathBounds = { - point: d3_geo_pathBoundsPoint, - lineStart: d3_noop, - lineEnd: d3_noop, - polygonStart: d3_noop, - polygonEnd: d3_noop -}; - -function d3_geo_pathBoundsPoint(x, y) { - if (x < d3_geo_pathBoundsX0) d3_geo_pathBoundsX0 = x; - if (x > d3_geo_pathBoundsX1) d3_geo_pathBoundsX1 = x; - if (y < d3_geo_pathBoundsY0) d3_geo_pathBoundsY0 = y; - if (y > d3_geo_pathBoundsY1) d3_geo_pathBoundsY1 = y; -} -function d3_geo_pathBuffer() { - var pointCircle = d3_geo_pathBufferCircle(4.5), - buffer = []; - - var stream = { - point: point, - - // While inside a line, override point to moveTo then lineTo. - lineStart: function() { stream.point = pointLineStart; }, - lineEnd: lineEnd, - - // While inside a polygon, override lineEnd to closePath. - polygonStart: function() { stream.lineEnd = lineEndPolygon; }, - polygonEnd: function() { stream.lineEnd = lineEnd; stream.point = point; }, + drag.touchable = function(_) { + return arguments.length ? (touchable = typeof _ === "function" ? _ : constant$2(!!_), drag) : touchable; + }; - pointRadius: function(_) { - pointCircle = d3_geo_pathBufferCircle(_); - return stream; - }, + drag.on = function() { + var value = listeners.on.apply(listeners, arguments); + return value === listeners ? drag : value; + }; - result: function() { - if (buffer.length) { - var result = buffer.join(""); - buffer = []; - return result; - } - } - }; + drag.clickDistance = function(_) { + return arguments.length ? (clickDistance2 = (_ = +_) * _, drag) : Math.sqrt(clickDistance2); + }; - function point(x, y) { - buffer.push("M", x, ",", y, pointCircle); + return drag; } - function pointLineStart(x, y) { - buffer.push("M", x, ",", y); - stream.point = pointLine; + function define(constructor, factory, prototype) { + constructor.prototype = factory.prototype = prototype; + prototype.constructor = constructor; } - function pointLine(x, y) { - buffer.push("L", x, ",", y); + function extend(parent, definition) { + var prototype = Object.create(parent.prototype); + for (var key in definition) prototype[key] = definition[key]; + return prototype; } - function lineEnd() { - stream.point = point; + function Color() {} + + var darker = 0.7; + var brighter = 1 / darker; + + var reI = "\\s*([+-]?\\d+)\\s*", + reN = "\\s*([+-]?\\d*\\.?\\d+(?:[eE][+-]?\\d+)?)\\s*", + reP = "\\s*([+-]?\\d*\\.?\\d+(?:[eE][+-]?\\d+)?)%\\s*", + reHex3 = /^#([0-9a-f]{3})$/, + reHex6 = /^#([0-9a-f]{6})$/, + reRgbInteger = new RegExp("^rgb\\(" + [reI, reI, reI] + "\\)$"), + reRgbPercent = new RegExp("^rgb\\(" + [reP, reP, reP] + "\\)$"), + reRgbaInteger = new RegExp("^rgba\\(" + [reI, reI, reI, reN] + "\\)$"), + reRgbaPercent = new RegExp("^rgba\\(" + [reP, reP, reP, reN] + "\\)$"), + reHslPercent = new RegExp("^hsl\\(" + [reN, reP, reP] + "\\)$"), + reHslaPercent = new RegExp("^hsla\\(" + [reN, reP, reP, reN] + "\\)$"); + + var named = { + aliceblue: 0xf0f8ff, + antiquewhite: 0xfaebd7, + aqua: 0x00ffff, + aquamarine: 0x7fffd4, + azure: 0xf0ffff, + beige: 0xf5f5dc, + bisque: 0xffe4c4, + black: 0x000000, + blanchedalmond: 0xffebcd, + blue: 0x0000ff, + blueviolet: 0x8a2be2, + brown: 0xa52a2a, + burlywood: 0xdeb887, + cadetblue: 0x5f9ea0, + chartreuse: 0x7fff00, + chocolate: 0xd2691e, + coral: 0xff7f50, + cornflowerblue: 0x6495ed, + cornsilk: 0xfff8dc, + crimson: 0xdc143c, + cyan: 0x00ffff, + darkblue: 0x00008b, + darkcyan: 0x008b8b, + darkgoldenrod: 0xb8860b, + darkgray: 0xa9a9a9, + darkgreen: 0x006400, + darkgrey: 0xa9a9a9, + darkkhaki: 0xbdb76b, + darkmagenta: 0x8b008b, + darkolivegreen: 0x556b2f, + darkorange: 0xff8c00, + darkorchid: 0x9932cc, + darkred: 0x8b0000, + darksalmon: 0xe9967a, + darkseagreen: 0x8fbc8f, + darkslateblue: 0x483d8b, + darkslategray: 0x2f4f4f, + darkslategrey: 0x2f4f4f, + darkturquoise: 0x00ced1, + darkviolet: 0x9400d3, + deeppink: 0xff1493, + deepskyblue: 0x00bfff, + dimgray: 0x696969, + dimgrey: 0x696969, + dodgerblue: 0x1e90ff, + firebrick: 0xb22222, + floralwhite: 0xfffaf0, + forestgreen: 0x228b22, + fuchsia: 0xff00ff, + gainsboro: 0xdcdcdc, + ghostwhite: 0xf8f8ff, + gold: 0xffd700, + goldenrod: 0xdaa520, + gray: 0x808080, + green: 0x008000, + greenyellow: 0xadff2f, + grey: 0x808080, + honeydew: 0xf0fff0, + hotpink: 0xff69b4, + indianred: 0xcd5c5c, + indigo: 0x4b0082, + ivory: 0xfffff0, + khaki: 0xf0e68c, + lavender: 0xe6e6fa, + lavenderblush: 0xfff0f5, + lawngreen: 0x7cfc00, + lemonchiffon: 0xfffacd, + lightblue: 0xadd8e6, + lightcoral: 0xf08080, + lightcyan: 0xe0ffff, + lightgoldenrodyellow: 0xfafad2, + lightgray: 0xd3d3d3, + lightgreen: 0x90ee90, + lightgrey: 0xd3d3d3, + lightpink: 0xffb6c1, + lightsalmon: 0xffa07a, + lightseagreen: 0x20b2aa, + lightskyblue: 0x87cefa, + lightslategray: 0x778899, + lightslategrey: 0x778899, + lightsteelblue: 0xb0c4de, + lightyellow: 0xffffe0, + lime: 0x00ff00, + limegreen: 0x32cd32, + linen: 0xfaf0e6, + magenta: 0xff00ff, + maroon: 0x800000, + mediumaquamarine: 0x66cdaa, + mediumblue: 0x0000cd, + mediumorchid: 0xba55d3, + mediumpurple: 0x9370db, + mediumseagreen: 0x3cb371, + mediumslateblue: 0x7b68ee, + mediumspringgreen: 0x00fa9a, + mediumturquoise: 0x48d1cc, + mediumvioletred: 0xc71585, + midnightblue: 0x191970, + mintcream: 0xf5fffa, + mistyrose: 0xffe4e1, + moccasin: 0xffe4b5, + navajowhite: 0xffdead, + navy: 0x000080, + oldlace: 0xfdf5e6, + olive: 0x808000, + olivedrab: 0x6b8e23, + orange: 0xffa500, + orangered: 0xff4500, + orchid: 0xda70d6, + palegoldenrod: 0xeee8aa, + palegreen: 0x98fb98, + paleturquoise: 0xafeeee, + palevioletred: 0xdb7093, + papayawhip: 0xffefd5, + peachpuff: 0xffdab9, + peru: 0xcd853f, + pink: 0xffc0cb, + plum: 0xdda0dd, + powderblue: 0xb0e0e6, + purple: 0x800080, + rebeccapurple: 0x663399, + red: 0xff0000, + rosybrown: 0xbc8f8f, + royalblue: 0x4169e1, + saddlebrown: 0x8b4513, + salmon: 0xfa8072, + sandybrown: 0xf4a460, + seagreen: 0x2e8b57, + seashell: 0xfff5ee, + sienna: 0xa0522d, + silver: 0xc0c0c0, + skyblue: 0x87ceeb, + slateblue: 0x6a5acd, + slategray: 0x708090, + slategrey: 0x708090, + snow: 0xfffafa, + springgreen: 0x00ff7f, + steelblue: 0x4682b4, + tan: 0xd2b48c, + teal: 0x008080, + thistle: 0xd8bfd8, + tomato: 0xff6347, + turquoise: 0x40e0d0, + violet: 0xee82ee, + wheat: 0xf5deb3, + white: 0xffffff, + whitesmoke: 0xf5f5f5, + yellow: 0xffff00, + yellowgreen: 0x9acd32 + }; + + define(Color, color, { + displayable: function() { + return this.rgb().displayable(); + }, + toString: function() { + return this.rgb() + ""; + } + }); + + function color(format) { + var m; + format = (format + "").trim().toLowerCase(); + return (m = reHex3.exec(format)) ? (m = parseInt(m[1], 16), new Rgb((m >> 8 & 0xf) | (m >> 4 & 0x0f0), (m >> 4 & 0xf) | (m & 0xf0), ((m & 0xf) << 4) | (m & 0xf), 1)) // #f00 + : (m = reHex6.exec(format)) ? rgbn(parseInt(m[1], 16)) // #ff0000 + : (m = reRgbInteger.exec(format)) ? new Rgb(m[1], m[2], m[3], 1) // rgb(255, 0, 0) + : (m = reRgbPercent.exec(format)) ? new Rgb(m[1] * 255 / 100, m[2] * 255 / 100, m[3] * 255 / 100, 1) // rgb(100%, 0%, 0%) + : (m = reRgbaInteger.exec(format)) ? rgba(m[1], m[2], m[3], m[4]) // rgba(255, 0, 0, 1) + : (m = reRgbaPercent.exec(format)) ? rgba(m[1] * 255 / 100, m[2] * 255 / 100, m[3] * 255 / 100, m[4]) // rgb(100%, 0%, 0%, 1) + : (m = reHslPercent.exec(format)) ? hsla(m[1], m[2] / 100, m[3] / 100, 1) // hsl(120, 50%, 50%) + : (m = reHslaPercent.exec(format)) ? hsla(m[1], m[2] / 100, m[3] / 100, m[4]) // hsla(120, 50%, 50%, 1) + : named.hasOwnProperty(format) ? rgbn(named[format]) + : format === "transparent" ? new Rgb(NaN, NaN, NaN, 0) + : null; } - function lineEndPolygon() { - buffer.push("Z"); + function rgbn(n) { + return new Rgb(n >> 16 & 0xff, n >> 8 & 0xff, n & 0xff, 1); } - return stream; -} + function rgba(r, g, b, a) { + if (a <= 0) r = g = b = NaN; + return new Rgb(r, g, b, a); + } -function d3_geo_pathBufferCircle(radius) { - return "m0," + radius - + "a" + radius + "," + radius + " 0 1,1 0," + -2 * radius - + "a" + radius + "," + radius + " 0 1,1 0," + 2 * radius - + "z"; -} + function rgbConvert(o) { + if (!(o instanceof Color)) o = color(o); + if (!o) return new Rgb; + o = o.rgb(); + return new Rgb(o.r, o.g, o.b, o.opacity); + } -// TODO Unify this code with d3.geom.polygon centroid? -// TODO Enforce positive area for exterior, negative area for interior? + function rgb(r, g, b, opacity) { + return arguments.length === 1 ? rgbConvert(r) : new Rgb(r, g, b, opacity == null ? 1 : opacity); + } -var d3_geo_pathCentroid = { - point: d3_geo_pathCentroidPoint, + function Rgb(r, g, b, opacity) { + this.r = +r; + this.g = +g; + this.b = +b; + this.opacity = +opacity; + } - // For lines, weight by length. - lineStart: d3_geo_pathCentroidLineStart, - lineEnd: d3_geo_pathCentroidLineEnd, + define(Rgb, rgb, extend(Color, { + brighter: function(k) { + k = k == null ? brighter : Math.pow(brighter, k); + return new Rgb(this.r * k, this.g * k, this.b * k, this.opacity); + }, + darker: function(k) { + k = k == null ? darker : Math.pow(darker, k); + return new Rgb(this.r * k, this.g * k, this.b * k, this.opacity); + }, + rgb: function() { + return this; + }, + displayable: function() { + return (0 <= this.r && this.r <= 255) + && (0 <= this.g && this.g <= 255) + && (0 <= this.b && this.b <= 255) + && (0 <= this.opacity && this.opacity <= 1); + }, + toString: function() { + var a = this.opacity; a = isNaN(a) ? 1 : Math.max(0, Math.min(1, a)); + return (a === 1 ? "rgb(" : "rgba(") + + Math.max(0, Math.min(255, Math.round(this.r) || 0)) + ", " + + Math.max(0, Math.min(255, Math.round(this.g) || 0)) + ", " + + Math.max(0, Math.min(255, Math.round(this.b) || 0)) + + (a === 1 ? ")" : ", " + a + ")"); + } + })); + + function hsla(h, s, l, a) { + if (a <= 0) h = s = l = NaN; + else if (l <= 0 || l >= 1) h = s = NaN; + else if (s <= 0) h = NaN; + return new Hsl(h, s, l, a); + } - // For polygons, weight by area. - polygonStart: function() { - d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidRingStart; - }, - polygonEnd: function() { - d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint; - d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidLineStart; - d3_geo_pathCentroid.lineEnd = d3_geo_pathCentroidLineEnd; + function hslConvert(o) { + if (o instanceof Hsl) return new Hsl(o.h, o.s, o.l, o.opacity); + if (!(o instanceof Color)) o = color(o); + if (!o) return new Hsl; + if (o instanceof Hsl) return o; + o = o.rgb(); + var r = o.r / 255, + g = o.g / 255, + b = o.b / 255, + min = Math.min(r, g, b), + max = Math.max(r, g, b), + h = NaN, + s = max - min, + l = (max + min) / 2; + if (s) { + if (r === max) h = (g - b) / s + (g < b) * 6; + else if (g === max) h = (b - r) / s + 2; + else h = (r - g) / s + 4; + s /= l < 0.5 ? max + min : 2 - max - min; + h *= 60; + } else { + s = l > 0 && l < 1 ? 0 : h; + } + return new Hsl(h, s, l, o.opacity); } -}; -function d3_geo_pathCentroidPoint(x, y) { - d3_geo_centroidX0 += x; - d3_geo_centroidY0 += y; - ++d3_geo_centroidZ0; -} + function hsl(h, s, l, opacity) { + return arguments.length === 1 ? hslConvert(h) : new Hsl(h, s, l, opacity == null ? 1 : opacity); + } -function d3_geo_pathCentroidLineStart() { - var x0, y0; + function Hsl(h, s, l, opacity) { + this.h = +h; + this.s = +s; + this.l = +l; + this.opacity = +opacity; + } - d3_geo_pathCentroid.point = function(x, y) { - d3_geo_pathCentroid.point = nextPoint; - d3_geo_pathCentroidPoint(x0 = x, y0 = y); - }; + define(Hsl, hsl, extend(Color, { + brighter: function(k) { + k = k == null ? brighter : Math.pow(brighter, k); + return new Hsl(this.h, this.s, this.l * k, this.opacity); + }, + darker: function(k) { + k = k == null ? darker : Math.pow(darker, k); + return new Hsl(this.h, this.s, this.l * k, this.opacity); + }, + rgb: function() { + var h = this.h % 360 + (this.h < 0) * 360, + s = isNaN(h) || isNaN(this.s) ? 0 : this.s, + l = this.l, + m2 = l + (l < 0.5 ? l : 1 - l) * s, + m1 = 2 * l - m2; + return new Rgb( + hsl2rgb(h >= 240 ? h - 240 : h + 120, m1, m2), + hsl2rgb(h, m1, m2), + hsl2rgb(h < 120 ? h + 240 : h - 120, m1, m2), + this.opacity + ); + }, + displayable: function() { + return (0 <= this.s && this.s <= 1 || isNaN(this.s)) + && (0 <= this.l && this.l <= 1) + && (0 <= this.opacity && this.opacity <= 1); + } + })); - function nextPoint(x, y) { - var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy); - d3_geo_centroidX1 += z * (x0 + x) / 2; - d3_geo_centroidY1 += z * (y0 + y) / 2; - d3_geo_centroidZ1 += z; - d3_geo_pathCentroidPoint(x0 = x, y0 = y); + /* From FvD 13.37, CSS Color Module Level 3 */ + function hsl2rgb(h, m1, m2) { + return (h < 60 ? m1 + (m2 - m1) * h / 60 + : h < 180 ? m2 + : h < 240 ? m1 + (m2 - m1) * (240 - h) / 60 + : m1) * 255; } -} -function d3_geo_pathCentroidLineEnd() { - d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint; -} + var deg2rad = Math.PI / 180; + var rad2deg = 180 / Math.PI; + + var Kn = 18, + Xn = 0.950470, // D65 standard referent + Yn = 1, + Zn = 1.088830, + t0 = 4 / 29, + t1 = 6 / 29, + t2 = 3 * t1 * t1, + t3 = t1 * t1 * t1; + + function labConvert(o) { + if (o instanceof Lab) return new Lab(o.l, o.a, o.b, o.opacity); + if (o instanceof Hcl) { + var h = o.h * deg2rad; + return new Lab(o.l, Math.cos(h) * o.c, Math.sin(h) * o.c, o.opacity); + } + if (!(o instanceof Rgb)) o = rgbConvert(o); + var b = rgb2xyz(o.r), + a = rgb2xyz(o.g), + l = rgb2xyz(o.b), + x = xyz2lab((0.4124564 * b + 0.3575761 * a + 0.1804375 * l) / Xn), + y = xyz2lab((0.2126729 * b + 0.7151522 * a + 0.0721750 * l) / Yn), + z = xyz2lab((0.0193339 * b + 0.1191920 * a + 0.9503041 * l) / Zn); + return new Lab(116 * y - 16, 500 * (x - y), 200 * (y - z), o.opacity); + } -function d3_geo_pathCentroidRingStart() { - var x00, y00, x0, y0; + function lab(l, a, b, opacity) { + return arguments.length === 1 ? labConvert(l) : new Lab(l, a, b, opacity == null ? 1 : opacity); + } - // For the first point, … - d3_geo_pathCentroid.point = function(x, y) { - d3_geo_pathCentroid.point = nextPoint; - d3_geo_pathCentroidPoint(x00 = x0 = x, y00 = y0 = y); - }; + function Lab(l, a, b, opacity) { + this.l = +l; + this.a = +a; + this.b = +b; + this.opacity = +opacity; + } - // For subsequent points, … - function nextPoint(x, y) { - var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy); - d3_geo_centroidX1 += z * (x0 + x) / 2; - d3_geo_centroidY1 += z * (y0 + y) / 2; - d3_geo_centroidZ1 += z; + define(Lab, lab, extend(Color, { + brighter: function(k) { + return new Lab(this.l + Kn * (k == null ? 1 : k), this.a, this.b, this.opacity); + }, + darker: function(k) { + return new Lab(this.l - Kn * (k == null ? 1 : k), this.a, this.b, this.opacity); + }, + rgb: function() { + var y = (this.l + 16) / 116, + x = isNaN(this.a) ? y : y + this.a / 500, + z = isNaN(this.b) ? y : y - this.b / 200; + y = Yn * lab2xyz(y); + x = Xn * lab2xyz(x); + z = Zn * lab2xyz(z); + return new Rgb( + xyz2rgb( 3.2404542 * x - 1.5371385 * y - 0.4985314 * z), // D65 -> sRGB + xyz2rgb(-0.9692660 * x + 1.8760108 * y + 0.0415560 * z), + xyz2rgb( 0.0556434 * x - 0.2040259 * y + 1.0572252 * z), + this.opacity + ); + } + })); + + function xyz2lab(t) { + return t > t3 ? Math.pow(t, 1 / 3) : t / t2 + t0; + } - z = y0 * x - x0 * y; - d3_geo_centroidX2 += z * (x0 + x); - d3_geo_centroidY2 += z * (y0 + y); - d3_geo_centroidZ2 += z * 3; - d3_geo_pathCentroidPoint(x0 = x, y0 = y); + function lab2xyz(t) { + return t > t1 ? t * t * t : t2 * (t - t0); } - // For the last point, return to the start. - d3_geo_pathCentroid.lineEnd = function() { - nextPoint(x00, y00); - }; -} + function xyz2rgb(x) { + return 255 * (x <= 0.0031308 ? 12.92 * x : 1.055 * Math.pow(x, 1 / 2.4) - 0.055); + } -function d3_geo_pathContext(context) { - var pointRadius = 4.5; + function rgb2xyz(x) { + return (x /= 255) <= 0.04045 ? x / 12.92 : Math.pow((x + 0.055) / 1.055, 2.4); + } - var stream = { - point: point, + function hclConvert(o) { + if (o instanceof Hcl) return new Hcl(o.h, o.c, o.l, o.opacity); + if (!(o instanceof Lab)) o = labConvert(o); + var h = Math.atan2(o.b, o.a) * rad2deg; + return new Hcl(h < 0 ? h + 360 : h, Math.sqrt(o.a * o.a + o.b * o.b), o.l, o.opacity); + } - // While inside a line, override point to moveTo then lineTo. - lineStart: function() { stream.point = pointLineStart; }, - lineEnd: lineEnd, + function hcl(h, c, l, opacity) { + return arguments.length === 1 ? hclConvert(h) : new Hcl(h, c, l, opacity == null ? 1 : opacity); + } - // While inside a polygon, override lineEnd to closePath. - polygonStart: function() { stream.lineEnd = lineEndPolygon; }, - polygonEnd: function() { stream.lineEnd = lineEnd; stream.point = point; }, + function Hcl(h, c, l, opacity) { + this.h = +h; + this.c = +c; + this.l = +l; + this.opacity = +opacity; + } - pointRadius: function(_) { - pointRadius = _; - return stream; + define(Hcl, hcl, extend(Color, { + brighter: function(k) { + return new Hcl(this.h, this.c, this.l + Kn * (k == null ? 1 : k), this.opacity); }, + darker: function(k) { + return new Hcl(this.h, this.c, this.l - Kn * (k == null ? 1 : k), this.opacity); + }, + rgb: function() { + return labConvert(this).rgb(); + } + })); + + var A = -0.14861, + B = +1.78277, + C = -0.29227, + D = -0.90649, + E = +1.97294, + ED = E * D, + EB = E * B, + BC_DA = B * C - D * A; + + function cubehelixConvert(o) { + if (o instanceof Cubehelix) return new Cubehelix(o.h, o.s, o.l, o.opacity); + if (!(o instanceof Rgb)) o = rgbConvert(o); + var r = o.r / 255, + g = o.g / 255, + b = o.b / 255, + l = (BC_DA * b + ED * r - EB * g) / (BC_DA + ED - EB), + bl = b - l, + k = (E * (g - l) - C * bl) / D, + s = Math.sqrt(k * k + bl * bl) / (E * l * (1 - l)), // NaN if l=0 or l=1 + h = s ? Math.atan2(k, bl) * rad2deg - 120 : NaN; + return new Cubehelix(h < 0 ? h + 360 : h, s, l, o.opacity); + } - result: d3_noop - }; + function cubehelix(h, s, l, opacity) { + return arguments.length === 1 ? cubehelixConvert(h) : new Cubehelix(h, s, l, opacity == null ? 1 : opacity); + } - function point(x, y) { - context.moveTo(x, y); - context.arc(x, y, pointRadius, 0, τ); + function Cubehelix(h, s, l, opacity) { + this.h = +h; + this.s = +s; + this.l = +l; + this.opacity = +opacity; } - function pointLineStart(x, y) { - context.moveTo(x, y); - stream.point = pointLine; + define(Cubehelix, cubehelix, extend(Color, { + brighter: function(k) { + k = k == null ? brighter : Math.pow(brighter, k); + return new Cubehelix(this.h, this.s, this.l * k, this.opacity); + }, + darker: function(k) { + k = k == null ? darker : Math.pow(darker, k); + return new Cubehelix(this.h, this.s, this.l * k, this.opacity); + }, + rgb: function() { + var h = isNaN(this.h) ? 0 : (this.h + 120) * deg2rad, + l = +this.l, + a = isNaN(this.s) ? 0 : this.s * l * (1 - l), + cosh = Math.cos(h), + sinh = Math.sin(h); + return new Rgb( + 255 * (l + a * (A * cosh + B * sinh)), + 255 * (l + a * (C * cosh + D * sinh)), + 255 * (l + a * (E * cosh)), + this.opacity + ); + } + })); + + function basis(t1, v0, v1, v2, v3) { + var t2 = t1 * t1, t3 = t2 * t1; + return ((1 - 3 * t1 + 3 * t2 - t3) * v0 + + (4 - 6 * t2 + 3 * t3) * v1 + + (1 + 3 * t1 + 3 * t2 - 3 * t3) * v2 + + t3 * v3) / 6; } - function pointLine(x, y) { - context.lineTo(x, y); + function basis$1(values) { + var n = values.length - 1; + return function(t) { + var i = t <= 0 ? (t = 0) : t >= 1 ? (t = 1, n - 1) : Math.floor(t * n), + v1 = values[i], + v2 = values[i + 1], + v0 = i > 0 ? values[i - 1] : 2 * v1 - v2, + v3 = i < n - 1 ? values[i + 2] : 2 * v2 - v1; + return basis((t - i / n) * n, v0, v1, v2, v3); + }; } - function lineEnd() { - stream.point = point; + function basisClosed(values) { + var n = values.length; + return function(t) { + var i = Math.floor(((t %= 1) < 0 ? ++t : t) * n), + v0 = values[(i + n - 1) % n], + v1 = values[i % n], + v2 = values[(i + 1) % n], + v3 = values[(i + 2) % n]; + return basis((t - i / n) * n, v0, v1, v2, v3); + }; } - function lineEndPolygon() { - context.closePath(); + function constant$3(x) { + return function() { + return x; + }; } - return stream; -} + function linear(a, d) { + return function(t) { + return a + t * d; + }; + } -function d3_geo_resample(project) { - var δ2 = .5, // precision, px² - cosMinDistance = Math.cos(30 * d3_radians), // cos(minimum angular distance) - maxDepth = 16; + function exponential(a, b, y) { + return a = Math.pow(a, y), b = Math.pow(b, y) - a, y = 1 / y, function(t) { + return Math.pow(a + t * b, y); + }; + } - function resample(stream) { - var λ00, φ00, x00, y00, a00, b00, c00, // first point - λ0, x0, y0, a0, b0, c0; // previous point + function hue(a, b) { + var d = b - a; + return d ? linear(a, d > 180 || d < -180 ? d - 360 * Math.round(d / 360) : d) : constant$3(isNaN(a) ? b : a); + } - var resample = { - point: point, - lineStart: lineStart, - lineEnd: lineEnd, - polygonStart: function() { stream.polygonStart(); resample.lineStart = ringStart; }, - polygonEnd: function() { stream.polygonEnd(); resample.lineStart = lineStart; } + function gamma(y) { + return (y = +y) === 1 ? nogamma : function(a, b) { + return b - a ? exponential(a, b, y) : constant$3(isNaN(a) ? b : a); }; + } - function point(x, y) { - x = project(x, y); - stream.point(x[0], x[1]); - } + function nogamma(a, b) { + var d = b - a; + return d ? linear(a, d) : constant$3(isNaN(a) ? b : a); + } - function lineStart() { - x0 = NaN; - resample.point = linePoint; - stream.lineStart(); + var interpolateRgb = (function rgbGamma(y) { + var color$$1 = gamma(y); + + function rgb$$1(start, end) { + var r = color$$1((start = rgb(start)).r, (end = rgb(end)).r), + g = color$$1(start.g, end.g), + b = color$$1(start.b, end.b), + opacity = nogamma(start.opacity, end.opacity); + return function(t) { + start.r = r(t); + start.g = g(t); + start.b = b(t); + start.opacity = opacity(t); + return start + ""; + }; } - function linePoint(λ, φ) { - var c = d3_geo_cartesian([λ, φ]), p = project(λ, φ); - resampleLineTo(x0, y0, λ0, a0, b0, c0, x0 = p[0], y0 = p[1], λ0 = λ, a0 = c[0], b0 = c[1], c0 = c[2], maxDepth, stream); - stream.point(x0, y0); - } + rgb$$1.gamma = rgbGamma; - function lineEnd() { - resample.point = point; - stream.lineEnd(); - } + return rgb$$1; + })(1); - function ringStart() { - lineStart(); - resample.point = ringPoint; - resample.lineEnd = ringEnd; - } + function rgbSpline(spline) { + return function(colors) { + var n = colors.length, + r = new Array(n), + g = new Array(n), + b = new Array(n), + i, color$$1; + for (i = 0; i < n; ++i) { + color$$1 = rgb(colors[i]); + r[i] = color$$1.r || 0; + g[i] = color$$1.g || 0; + b[i] = color$$1.b || 0; + } + r = spline(r); + g = spline(g); + b = spline(b); + color$$1.opacity = 1; + return function(t) { + color$$1.r = r(t); + color$$1.g = g(t); + color$$1.b = b(t); + return color$$1 + ""; + }; + }; + } - function ringPoint(λ, φ) { - linePoint(λ00 = λ, φ00 = φ), x00 = x0, y00 = y0, a00 = a0, b00 = b0, c00 = c0; - resample.point = linePoint; - } + var rgbBasis = rgbSpline(basis$1); + var rgbBasisClosed = rgbSpline(basisClosed); - function ringEnd() { - resampleLineTo(x0, y0, λ0, a0, b0, c0, x00, y00, λ00, a00, b00, c00, maxDepth, stream); - resample.lineEnd = lineEnd; - lineEnd(); - } + function array$1(a, b) { + var nb = b ? b.length : 0, + na = a ? Math.min(nb, a.length) : 0, + x = new Array(na), + c = new Array(nb), + i; - return resample; - } + for (i = 0; i < na; ++i) x[i] = interpolate(a[i], b[i]); + for (; i < nb; ++i) c[i] = b[i]; - function resampleLineTo(x0, y0, λ0, a0, b0, c0, x1, y1, λ1, a1, b1, c1, depth, stream) { - var dx = x1 - x0, - dy = y1 - y0, - d2 = dx * dx + dy * dy; - if (d2 > 4 * δ2 && depth--) { - var a = a0 + a1, - b = b0 + b1, - c = c0 + c1, - m = Math.sqrt(a * a + b * b + c * c), - φ2 = Math.asin(c /= m), - λ2 = abs(abs(c) - 1) < ε ? (λ0 + λ1) / 2 : Math.atan2(b, a), - p = project(λ2, φ2), - x2 = p[0], - y2 = p[1], - dx2 = x2 - x0, - dy2 = y2 - y0, - dz = dy * dx2 - dx * dy2; - if (dz * dz / d2 > δ2 // perpendicular projected distance - || abs((dx * dx2 + dy * dy2) / d2 - .5) > .3 // midpoint close to an end - || a0 * a1 + b0 * b1 + c0 * c1 < cosMinDistance) { // angular distance - resampleLineTo(x0, y0, λ0, a0, b0, c0, x2, y2, λ2, a /= m, b /= m, c, depth, stream); - stream.point(x2, y2); - resampleLineTo(x2, y2, λ2, a, b, c, x1, y1, λ1, a1, b1, c1, depth, stream); - } - } + return function(t) { + for (i = 0; i < na; ++i) c[i] = x[i](t); + return c; + }; } - resample.precision = function(_) { - if (!arguments.length) return Math.sqrt(δ2); - maxDepth = (δ2 = _ * _) > 0 && 16; - return resample; - }; + function date(a, b) { + var d = new Date; + return a = +a, b -= a, function(t) { + return d.setTime(a + b * t), d; + }; + } - return resample; -} + function interpolateNumber(a, b) { + return a = +a, b -= a, function(t) { + return a + b * t; + }; + } -d3.geo.transform = function(methods) { - return { - stream: function(stream) { - var transform = new d3_geo_transform(stream); - for (var k in methods) transform[k] = methods[k]; - return transform; - } - }; -}; - -function d3_geo_transform(stream) { - this.stream = stream; -} - -d3_geo_transform.prototype = { - point: function(x, y) { this.stream.point(x, y); }, - sphere: function() { this.stream.sphere(); }, - lineStart: function() { this.stream.lineStart(); }, - lineEnd: function() { this.stream.lineEnd(); }, - polygonStart: function() { this.stream.polygonStart(); }, - polygonEnd: function() { this.stream.polygonEnd(); } -}; - -d3.geo.path = function() { - var pointRadius = 4.5, - projection, - context, - projectStream, - contextStream, - cacheStream; - - function path(object) { - if (object) { - if (typeof pointRadius === "function") contextStream.pointRadius(+pointRadius.apply(this, arguments)); - if (!cacheStream || !cacheStream.valid) cacheStream = projectStream(contextStream); - d3.geo.stream(object, cacheStream); - } - return contextStream.result(); - } - - path.area = function(object) { - d3_geo_pathAreaSum = 0; - d3.geo.stream(object, projectStream(d3_geo_pathArea)); - return d3_geo_pathAreaSum; - }; + function object(a, b) { + var i = {}, + c = {}, + k; - path.centroid = function(object) { - d3_geo_centroidX0 = d3_geo_centroidY0 = d3_geo_centroidZ0 = - d3_geo_centroidX1 = d3_geo_centroidY1 = d3_geo_centroidZ1 = - d3_geo_centroidX2 = d3_geo_centroidY2 = d3_geo_centroidZ2 = 0; - d3.geo.stream(object, projectStream(d3_geo_pathCentroid)); - return d3_geo_centroidZ2 ? [d3_geo_centroidX2 / d3_geo_centroidZ2, d3_geo_centroidY2 / d3_geo_centroidZ2] - : d3_geo_centroidZ1 ? [d3_geo_centroidX1 / d3_geo_centroidZ1, d3_geo_centroidY1 / d3_geo_centroidZ1] - : d3_geo_centroidZ0 ? [d3_geo_centroidX0 / d3_geo_centroidZ0, d3_geo_centroidY0 / d3_geo_centroidZ0] - : [NaN, NaN]; - }; + if (a === null || typeof a !== "object") a = {}; + if (b === null || typeof b !== "object") b = {}; - path.bounds = function(object) { - d3_geo_pathBoundsX1 = d3_geo_pathBoundsY1 = -(d3_geo_pathBoundsX0 = d3_geo_pathBoundsY0 = Infinity); - d3.geo.stream(object, projectStream(d3_geo_pathBounds)); - return [[d3_geo_pathBoundsX0, d3_geo_pathBoundsY0], [d3_geo_pathBoundsX1, d3_geo_pathBoundsY1]]; - }; + for (k in b) { + if (k in a) { + i[k] = interpolate(a[k], b[k]); + } else { + c[k] = b[k]; + } + } - path.projection = function(_) { - if (!arguments.length) return projection; - projectStream = (projection = _) ? _.stream || d3_geo_pathProjectStream(_) : d3_identity; - return reset(); - }; + return function(t) { + for (k in i) c[k] = i[k](t); + return c; + }; + } - path.context = function(_) { - if (!arguments.length) return context; - contextStream = (context = _) == null ? new d3_geo_pathBuffer : new d3_geo_pathContext(_); - if (typeof pointRadius !== "function") contextStream.pointRadius(pointRadius); - return reset(); - }; + var reA = /[-+]?(?:\d+\.?\d*|\.?\d+)(?:[eE][-+]?\d+)?/g, + reB = new RegExp(reA.source, "g"); - path.pointRadius = function(_) { - if (!arguments.length) return pointRadius; - pointRadius = typeof _ === "function" ? _ : (contextStream.pointRadius(+_), +_); - return path; - }; + function zero(b) { + return function() { + return b; + }; + } - function reset() { - cacheStream = null; - return path; + function one(b) { + return function(t) { + return b(t) + ""; + }; } - return path.projection(d3.geo.albersUsa()).context(null); -}; + function interpolateString(a, b) { + var bi = reA.lastIndex = reB.lastIndex = 0, // scan index for next number in b + am, // current match in a + bm, // current match in b + bs, // string preceding current number in b, if any + i = -1, // index in s + s = [], // string constants and placeholders + q = []; // number interpolators + + // Coerce inputs to strings. + a = a + "", b = b + ""; + + // Interpolate pairs of numbers in a & b. + while ((am = reA.exec(a)) + && (bm = reB.exec(b))) { + if ((bs = bm.index) > bi) { // a string precedes the next number in b + bs = b.slice(bi, bs); + if (s[i]) s[i] += bs; // coalesce with previous string + else s[++i] = bs; + } + if ((am = am[0]) === (bm = bm[0])) { // numbers in a & b match + if (s[i]) s[i] += bm; // coalesce with previous string + else s[++i] = bm; + } else { // interpolate non-matching numbers + s[++i] = null; + q.push({i: i, x: interpolateNumber(am, bm)}); + } + bi = reB.lastIndex; + } -function d3_geo_pathProjectStream(project) { - var resample = d3_geo_resample(function(x, y) { return project([x * d3_degrees, y * d3_degrees]); }); - return function(stream) { - var transform = new d3_geo_transform(stream = resample(stream)); - transform.point = function(x, y) { stream.point(x * d3_radians, y * d3_radians); }; - return transform; - }; -} - -d3.geo.projection = d3_geo_projection; -d3.geo.projectionMutator = d3_geo_projectionMutator; - -function d3_geo_projection(project) { - return d3_geo_projectionMutator(function() { return project; })(); -} - -function d3_geo_projectionMutator(projectAt) { - var project, - rotate, - projectRotate, - projectResample = d3_geo_resample(function(x, y) { x = project(x, y); return [x[0] * k + δx, δy - x[1] * k]; }), - k = 150, // scale - x = 480, y = 250, // translate - λ = 0, φ = 0, // center - δλ = 0, δφ = 0, δγ = 0, // rotate - δx, δy, // center - preclip = d3_geo_clipAntimeridian, - postclip = d3_identity, - clipAngle = null, - clipExtent = null, - stream; - - function projection(point) { - point = projectRotate(point[0] * d3_radians, point[1] * d3_radians); - return [point[0] * k + δx, δy - point[1] * k]; - } - - function invert(point) { - point = projectRotate.invert((point[0] - δx) / k, (δy - point[1]) / k); - return point && [point[0] * d3_degrees, point[1] * d3_degrees]; - } - - projection.stream = function(output) { - if (stream) stream.valid = false; - stream = d3_geo_projectionRadians(preclip(rotate, projectResample(postclip(output)))); - stream.valid = true; // allow caching by d3.geo.path - return stream; - }; + // Add remains of b. + if (bi < b.length) { + bs = b.slice(bi); + if (s[i]) s[i] += bs; // coalesce with previous string + else s[++i] = bs; + } - projection.clipAngle = function(_) { - if (!arguments.length) return clipAngle; - preclip = _ == null ? (clipAngle = _, d3_geo_clipAntimeridian) : d3_geo_clipCircle((clipAngle = +_) * d3_radians); - return invalidate(); - }; + // Special optimization for only a single match. + // Otherwise, interpolate each of the numbers and rejoin the string. + return s.length < 2 ? (q[0] + ? one(q[0].x) + : zero(b)) + : (b = q.length, function(t) { + for (var i = 0, o; i < b; ++i) s[(o = q[i]).i] = o.x(t); + return s.join(""); + }); + } - projection.clipExtent = function(_) { - if (!arguments.length) return clipExtent; - clipExtent = _; - postclip = _ ? d3_geo_clipExtent(_[0][0], _[0][1], _[1][0], _[1][1]) : d3_identity; - return invalidate(); - }; + function interpolate(a, b) { + var t = typeof b, c; + return b == null || t === "boolean" ? constant$3(b) + : (t === "number" ? interpolateNumber + : t === "string" ? ((c = color(b)) ? (b = c, interpolateRgb) : interpolateString) + : b instanceof color ? interpolateRgb + : b instanceof Date ? date + : Array.isArray(b) ? array$1 + : typeof b.valueOf !== "function" && typeof b.toString !== "function" || isNaN(b) ? object + : interpolateNumber)(a, b); + } - projection.scale = function(_) { - if (!arguments.length) return k; - k = +_; - return reset(); - }; + function interpolateRound(a, b) { + return a = +a, b -= a, function(t) { + return Math.round(a + b * t); + }; + } - projection.translate = function(_) { - if (!arguments.length) return [x, y]; - x = +_[0]; - y = +_[1]; - return reset(); - }; + var degrees = 180 / Math.PI; - projection.center = function(_) { - if (!arguments.length) return [λ * d3_degrees, φ * d3_degrees]; - λ = _[0] % 360 * d3_radians; - φ = _[1] % 360 * d3_radians; - return reset(); + var identity$2 = { + translateX: 0, + translateY: 0, + rotate: 0, + skewX: 0, + scaleX: 1, + scaleY: 1 }; - projection.rotate = function(_) { - if (!arguments.length) return [δλ * d3_degrees, δφ * d3_degrees, δγ * d3_degrees]; - δλ = _[0] % 360 * d3_radians; - δφ = _[1] % 360 * d3_radians; - δγ = _.length > 2 ? _[2] % 360 * d3_radians : 0; - return reset(); - }; - - d3.rebind(projection, projectResample, "precision"); - - function reset() { - projectRotate = d3_geo_compose(rotate = d3_geo_rotation(δλ, δφ, δγ), project); - var center = project(λ, φ); - δx = x - center[0] * k; - δy = y + center[1] * k; - return invalidate(); + function decompose(a, b, c, d, e, f) { + var scaleX, scaleY, skewX; + if (scaleX = Math.sqrt(a * a + b * b)) a /= scaleX, b /= scaleX; + if (skewX = a * c + b * d) c -= a * skewX, d -= b * skewX; + if (scaleY = Math.sqrt(c * c + d * d)) c /= scaleY, d /= scaleY, skewX /= scaleY; + if (a * d < b * c) a = -a, b = -b, skewX = -skewX, scaleX = -scaleX; + return { + translateX: e, + translateY: f, + rotate: Math.atan2(b, a) * degrees, + skewX: Math.atan(skewX) * degrees, + scaleX: scaleX, + scaleY: scaleY + }; } - function invalidate() { - if (stream) stream.valid = false, stream = null; - return projection; + var cssNode, + cssRoot, + cssView, + svgNode; + + function parseCss(value) { + if (value === "none") return identity$2; + if (!cssNode) cssNode = document.createElement("DIV"), cssRoot = document.documentElement, cssView = document.defaultView; + cssNode.style.transform = value; + value = cssView.getComputedStyle(cssRoot.appendChild(cssNode), null).getPropertyValue("transform"); + cssRoot.removeChild(cssNode); + value = value.slice(7, -1).split(","); + return decompose(+value[0], +value[1], +value[2], +value[3], +value[4], +value[5]); } - return function() { - project = projectAt.apply(this, arguments); - projection.invert = project.invert && invert; - return reset(); - }; -} + function parseSvg(value) { + if (value == null) return identity$2; + if (!svgNode) svgNode = document.createElementNS("http://www.w3.org/2000/svg", "g"); + svgNode.setAttribute("transform", value); + if (!(value = svgNode.transform.baseVal.consolidate())) return identity$2; + value = value.matrix; + return decompose(value.a, value.b, value.c, value.d, value.e, value.f); + } -function d3_geo_projectionRadians(stream) { - var transform = new d3_geo_transform(stream); - transform.point = function(λ, φ) { - stream.point(λ * d3_radians, φ * d3_radians); - }; - return transform; -} - -function d3_geo_mercator(λ, φ) { - return [λ, Math.log(Math.tan(π / 4 + φ / 2))]; -} - -d3_geo_mercator.invert = function(x, y) { - return [x, 2 * Math.atan(Math.exp(y)) - halfπ]; -}; - -function d3_geo_mercatorProjection(project) { - var m = d3_geo_projection(project), - scale = m.scale, - translate = m.translate, - clipExtent = m.clipExtent, - clipAuto; - - m.scale = function() { - var v = scale.apply(m, arguments); - return v === m ? (clipAuto ? m.clipExtent(null) : m) : v; - }; + function interpolateTransform(parse, pxComma, pxParen, degParen) { - m.translate = function() { - var v = translate.apply(m, arguments); - return v === m ? (clipAuto ? m.clipExtent(null) : m) : v; - }; + function pop(s) { + return s.length ? s.pop() + " " : ""; + } - m.clipExtent = function(_) { - var v = clipExtent.apply(m, arguments); - if (v === m) { - if (clipAuto = _ == null) { - var k = π * scale(), t = translate(); - clipExtent([[t[0] - k, t[1] - k], [t[0] + k, t[1] + k]]); + function translate(xa, ya, xb, yb, s, q) { + if (xa !== xb || ya !== yb) { + var i = s.push("translate(", null, pxComma, null, pxParen); + q.push({i: i - 4, x: interpolateNumber(xa, xb)}, {i: i - 2, x: interpolateNumber(ya, yb)}); + } else if (xb || yb) { + s.push("translate(" + xb + pxComma + yb + pxParen); } - } else if (clipAuto) { - v = null; } - return v; - }; - - return m.clipExtent(null); -} - -(d3.geo.mercator = function() { - return d3_geo_mercatorProjection(d3_geo_mercator); -}).raw = d3_geo_mercator; -d3.geom = {}; - -d3.geom.polygon = function(coordinates) { - d3_subclass(coordinates, d3_geom_polygonPrototype); - return coordinates; -}; - -var d3_geom_polygonPrototype = d3.geom.polygon.prototype = []; - -d3_geom_polygonPrototype.area = function() { - var i = -1, - n = this.length, - a, - b = this[n - 1], - area = 0; - - while (++i < n) { - a = b; - b = this[i]; - area += a[1] * b[0] - a[0] * b[1]; - } - - return area * .5; -}; - -d3_geom_polygonPrototype.centroid = function(k) { - var i = -1, - n = this.length, - x = 0, - y = 0, - a, - b = this[n - 1], - c; - - if (!arguments.length) k = -1 / (6 * this.area()); - - while (++i < n) { - a = b; - b = this[i]; - c = a[0] * b[1] - b[0] * a[1]; - x += (a[0] + b[0]) * c; - y += (a[1] + b[1]) * c; - } - - return [x * k, y * k]; -}; - -// The Sutherland-Hodgman clipping algorithm. -// Note: requires the clip polygon to be counterclockwise and convex. -d3_geom_polygonPrototype.clip = function(subject) { - var input, - closed = d3_geom_polygonClosed(subject), - i = -1, - n = this.length - d3_geom_polygonClosed(this), - j, - m, - a = this[n - 1], - b, - c, - d; - - while (++i < n) { - input = subject.slice(); - subject.length = 0; - b = this[i]; - c = input[(m = input.length - closed) - 1]; - j = -1; - while (++j < m) { - d = input[j]; - if (d3_geom_polygonInside(d, a, b)) { - if (!d3_geom_polygonInside(c, a, b)) { - subject.push(d3_geom_polygonIntersect(c, d, a, b)); - } - subject.push(d); - } else if (d3_geom_polygonInside(c, a, b)) { - subject.push(d3_geom_polygonIntersect(c, d, a, b)); - } - c = d; - } - if (closed) subject.push(subject[0]); - a = b; - } - - return subject; -}; - -function d3_geom_polygonInside(p, a, b) { - return (b[0] - a[0]) * (p[1] - a[1]) < (b[1] - a[1]) * (p[0] - a[0]); -} - -// Intersect two infinite lines cd and ab. -function d3_geom_polygonIntersect(c, d, a, b) { - var x1 = c[0], x3 = a[0], x21 = d[0] - x1, x43 = b[0] - x3, - y1 = c[1], y3 = a[1], y21 = d[1] - y1, y43 = b[1] - y3, - ua = (x43 * (y1 - y3) - y43 * (x1 - x3)) / (y43 * x21 - x43 * y21); - return [x1 + ua * x21, y1 + ua * y21]; -} - -// Returns true if the polygon is closed. -function d3_geom_polygonClosed(coordinates) { - var a = coordinates[0], - b = coordinates[coordinates.length - 1]; - return !(a[0] - b[0] || a[1] - b[1]); -} - -var d3_ease_default = function() { return d3_identity; }; - -var d3_ease = d3.map({ - linear: d3_ease_default, - poly: d3_ease_poly, - quad: function() { return d3_ease_quad; }, - cubic: function() { return d3_ease_cubic; }, - sin: function() { return d3_ease_sin; }, - exp: function() { return d3_ease_exp; }, - circle: function() { return d3_ease_circle; }, - elastic: d3_ease_elastic, - back: d3_ease_back, - bounce: function() { return d3_ease_bounce; } -}); - -var d3_ease_mode = d3.map({ - "in": d3_identity, - "out": d3_ease_reverse, - "in-out": d3_ease_reflect, - "out-in": function(f) { return d3_ease_reflect(d3_ease_reverse(f)); } -}); - -d3.ease = function(name) { - var i = name.indexOf("-"), - t = i >= 0 ? name.substring(0, i) : name, - m = i >= 0 ? name.substring(i + 1) : "in"; - t = d3_ease.get(t) || d3_ease_default; - m = d3_ease_mode.get(m) || d3_identity; - return d3_ease_clamp(m(t.apply(null, d3_arraySlice.call(arguments, 1)))); -}; - -function d3_ease_clamp(f) { - return function(t) { - return t <= 0 ? 0 : t >= 1 ? 1 : f(t); - }; -} -function d3_ease_reverse(f) { - return function(t) { - return 1 - f(1 - t); - }; -} + function rotate(a, b, s, q) { + if (a !== b) { + if (a - b > 180) b += 360; else if (b - a > 180) a += 360; // shortest path + q.push({i: s.push(pop(s) + "rotate(", null, degParen) - 2, x: interpolateNumber(a, b)}); + } else if (b) { + s.push(pop(s) + "rotate(" + b + degParen); + } + } -function d3_ease_reflect(f) { - return function(t) { - return .5 * (t < .5 ? f(2 * t) : (2 - f(2 - 2 * t))); - }; -} - -function d3_ease_quad(t) { - return t * t; -} - -function d3_ease_cubic(t) { - return t * t * t; -} - -// Optimized clamp(reflect(poly(3))). -function d3_ease_cubicInOut(t) { - if (t <= 0) return 0; - if (t >= 1) return 1; - var t2 = t * t, t3 = t2 * t; - return 4 * (t < .5 ? t3 : 3 * (t - t2) + t3 - .75); -} - -function d3_ease_poly(e) { - return function(t) { - return Math.pow(t, e); - }; -} - -function d3_ease_sin(t) { - return 1 - Math.cos(t * halfπ); -} - -function d3_ease_exp(t) { - return Math.pow(2, 10 * (t - 1)); -} - -function d3_ease_circle(t) { - return 1 - Math.sqrt(1 - t * t); -} - -function d3_ease_elastic(a, p) { - var s; - if (arguments.length < 2) p = 0.45; - if (arguments.length) s = p / τ * Math.asin(1 / a); - else a = 1, s = p / 4; - return function(t) { - return 1 + a * Math.pow(2, -10 * t) * Math.sin((t - s) * τ / p); - }; -} + function skewX(a, b, s, q) { + if (a !== b) { + q.push({i: s.push(pop(s) + "skewX(", null, degParen) - 2, x: interpolateNumber(a, b)}); + } else if (b) { + s.push(pop(s) + "skewX(" + b + degParen); + } + } -function d3_ease_back(s) { - if (!s) s = 1.70158; - return function(t) { - return t * t * ((s + 1) * t - s); - }; -} - -function d3_ease_bounce(t) { - return t < 1 / 2.75 ? 7.5625 * t * t - : t < 2 / 2.75 ? 7.5625 * (t -= 1.5 / 2.75) * t + .75 - : t < 2.5 / 2.75 ? 7.5625 * (t -= 2.25 / 2.75) * t + .9375 - : 7.5625 * (t -= 2.625 / 2.75) * t + .984375; -} - -function d3_transition(groups, id) { - d3_subclass(groups, d3_transitionPrototype); - - groups.id = id; // Note: read-only! - - return groups; -} - -var d3_transitionPrototype = [], - d3_transitionId = 0, - d3_transitionInheritId, - d3_transitionInherit; - -d3_transitionPrototype.call = d3_selectionPrototype.call; -d3_transitionPrototype.empty = d3_selectionPrototype.empty; -d3_transitionPrototype.node = d3_selectionPrototype.node; -d3_transitionPrototype.size = d3_selectionPrototype.size; - -d3.transition = function(selection) { - return arguments.length - ? (d3_transitionInheritId ? selection.transition() : selection) - : d3_selectionRoot.transition(); -}; - -d3.transition.prototype = d3_transitionPrototype; - - -d3_transitionPrototype.select = function(selector) { - var id = this.id, - subgroups = [], - subgroup, - subnode, - node; - - selector = d3_selection_selector(selector); - - for (var j = -1, m = this.length; ++j < m;) { - subgroups.push(subgroup = []); - for (var group = this[j], i = -1, n = group.length; ++i < n;) { - if ((node = group[i]) && (subnode = selector.call(node, node.__data__, i, j))) { - if ("__data__" in node) subnode.__data__ = node.__data__; - d3_transitionNode(subnode, i, id, node.__transition__[id]); - subgroup.push(subnode); - } else { - subgroup.push(null); + function scale(xa, ya, xb, yb, s, q) { + if (xa !== xb || ya !== yb) { + var i = s.push(pop(s) + "scale(", null, ",", null, ")"); + q.push({i: i - 4, x: interpolateNumber(xa, xb)}, {i: i - 2, x: interpolateNumber(ya, yb)}); + } else if (xb !== 1 || yb !== 1) { + s.push(pop(s) + "scale(" + xb + "," + yb + ")"); } } - } - return d3_transition(subgroups, id); -}; + return function(a, b) { + var s = [], // string constants and placeholders + q = []; // number interpolators + a = parse(a), b = parse(b); + translate(a.translateX, a.translateY, b.translateX, b.translateY, s, q); + rotate(a.rotate, b.rotate, s, q); + skewX(a.skewX, b.skewX, s, q); + scale(a.scaleX, a.scaleY, b.scaleX, b.scaleY, s, q); + a = b = null; // gc + return function(t) { + var i = -1, n = q.length, o; + while (++i < n) s[(o = q[i]).i] = o.x(t); + return s.join(""); + }; + }; + } -d3_transitionPrototype.selectAll = function(selector) { - var id = this.id, - subgroups = [], - subgroup, - subnodes, - node, - subnode, - transition; + var interpolateTransformCss = interpolateTransform(parseCss, "px, ", "px)", "deg)"); + var interpolateTransformSvg = interpolateTransform(parseSvg, ", ", ")", ")"); - selector = d3_selection_selectorAll(selector); + var rho = Math.SQRT2, + rho2 = 2, + rho4 = 4, + epsilon2 = 1e-12; - for (var j = -1, m = this.length; ++j < m;) { - for (var group = this[j], i = -1, n = group.length; ++i < n;) { - if (node = group[i]) { - transition = node.__transition__[id]; - subnodes = selector.call(node, node.__data__, i, j); - subgroups.push(subgroup = []); - for (var k = -1, o = subnodes.length; ++k < o;) { - if (subnode = subnodes[k]) d3_transitionNode(subnode, k, id, transition); - subgroup.push(subnode); - } - } - } + function cosh(x) { + return ((x = Math.exp(x)) + 1 / x) / 2; } - return d3_transition(subgroups, id); -}; + function sinh(x) { + return ((x = Math.exp(x)) - 1 / x) / 2; + } -d3_transitionPrototype.filter = function(filter) { - var subgroups = [], - subgroup, - group, - node; + function tanh(x) { + return ((x = Math.exp(2 * x)) - 1) / (x + 1); + } - if (typeof filter !== "function") filter = d3_selection_filter(filter); + // p0 = [ux0, uy0, w0] + // p1 = [ux1, uy1, w1] + function interpolateZoom(p0, p1) { + var ux0 = p0[0], uy0 = p0[1], w0 = p0[2], + ux1 = p1[0], uy1 = p1[1], w1 = p1[2], + dx = ux1 - ux0, + dy = uy1 - uy0, + d2 = dx * dx + dy * dy, + i, + S; + + // Special case for u0 ≅ u1. + if (d2 < epsilon2) { + S = Math.log(w1 / w0) / rho; + i = function(t) { + return [ + ux0 + t * dx, + uy0 + t * dy, + w0 * Math.exp(rho * t * S) + ]; + }; + } - for (var j = 0, m = this.length; j < m; j++) { - subgroups.push(subgroup = []); - for (var group = this[j], i = 0, n = group.length; i < n; i++) { - if ((node = group[i]) && filter.call(node, node.__data__, i)) { - subgroup.push(node); - } + // General case. + else { + var d1 = Math.sqrt(d2), + b0 = (w1 * w1 - w0 * w0 + rho4 * d2) / (2 * w0 * rho2 * d1), + b1 = (w1 * w1 - w0 * w0 - rho4 * d2) / (2 * w1 * rho2 * d1), + r0 = Math.log(Math.sqrt(b0 * b0 + 1) - b0), + r1 = Math.log(Math.sqrt(b1 * b1 + 1) - b1); + S = (r1 - r0) / rho; + i = function(t) { + var s = t * S, + coshr0 = cosh(r0), + u = w0 / (rho2 * d1) * (coshr0 * tanh(rho * s + r0) - sinh(r0)); + return [ + ux0 + u * dx, + uy0 + u * dy, + w0 * coshr0 / cosh(rho * s + r0) + ]; + }; } + + i.duration = S * 1000; + + return i; } - return d3_transition(subgroups, this.id); -}; -function d3_Color() {} + function hsl$1(hue$$1) { + return function(start, end) { + var h = hue$$1((start = hsl(start)).h, (end = hsl(end)).h), + s = nogamma(start.s, end.s), + l = nogamma(start.l, end.l), + opacity = nogamma(start.opacity, end.opacity); + return function(t) { + start.h = h(t); + start.s = s(t); + start.l = l(t); + start.opacity = opacity(t); + return start + ""; + }; + } + } -d3_Color.prototype.toString = function() { - return this.rgb() + ""; -}; + var hsl$2 = hsl$1(hue); + var hslLong = hsl$1(nogamma); + + function lab$1(start, end) { + var l = nogamma((start = lab(start)).l, (end = lab(end)).l), + a = nogamma(start.a, end.a), + b = nogamma(start.b, end.b), + opacity = nogamma(start.opacity, end.opacity); + return function(t) { + start.l = l(t); + start.a = a(t); + start.b = b(t); + start.opacity = opacity(t); + return start + ""; + }; + } -d3.hsl = function(h, s, l) { - return arguments.length === 1 - ? (h instanceof d3_Hsl ? d3_hsl(h.h, h.s, h.l) - : d3_rgb_parse("" + h, d3_rgb_hsl, d3_hsl)) - : d3_hsl(+h, +s, +l); -}; + function hcl$1(hue$$1) { + return function(start, end) { + var h = hue$$1((start = hcl(start)).h, (end = hcl(end)).h), + c = nogamma(start.c, end.c), + l = nogamma(start.l, end.l), + opacity = nogamma(start.opacity, end.opacity); + return function(t) { + start.h = h(t); + start.c = c(t); + start.l = l(t); + start.opacity = opacity(t); + return start + ""; + }; + } + } -function d3_hsl(h, s, l) { - return new d3_Hsl(h, s, l); -} + var hcl$2 = hcl$1(hue); + var hclLong = hcl$1(nogamma); + + function cubehelix$1(hue$$1) { + return (function cubehelixGamma(y) { + y = +y; + + function cubehelix$$1(start, end) { + var h = hue$$1((start = cubehelix(start)).h, (end = cubehelix(end)).h), + s = nogamma(start.s, end.s), + l = nogamma(start.l, end.l), + opacity = nogamma(start.opacity, end.opacity); + return function(t) { + start.h = h(t); + start.s = s(t); + start.l = l(Math.pow(t, y)); + start.opacity = opacity(t); + return start + ""; + }; + } -function d3_Hsl(h, s, l) { - this.h = h; - this.s = s; - this.l = l; -} + cubehelix$$1.gamma = cubehelixGamma; -var d3_hslPrototype = d3_Hsl.prototype = new d3_Color; + return cubehelix$$1; + })(1); + } -d3_hslPrototype.brighter = function(k) { - k = Math.pow(0.7, arguments.length ? k : 1); - return d3_hsl(this.h, this.s, this.l / k); -}; + var cubehelix$2 = cubehelix$1(hue); + var cubehelixLong = cubehelix$1(nogamma); -d3_hslPrototype.darker = function(k) { - k = Math.pow(0.7, arguments.length ? k : 1); - return d3_hsl(this.h, this.s, k * this.l); -}; + function d3_quantize(interpolator, n) { + var samples = new Array(n); + for (var i = 0; i < n; ++i) samples[i] = interpolator(i / (n - 1)); + return samples; + } -d3_hslPrototype.rgb = function() { - return d3_hsl_rgb(this.h, this.s, this.l); -}; + var frame = 0, // is an animation frame pending? + timeout = 0, // is a timeout pending? + interval = 0, // are any timers active? + pokeDelay = 1000, // how frequently we check for clock skew + taskHead, + taskTail, + clockLast = 0, + clockNow = 0, + clockSkew = 0, + clock = typeof performance === "object" && performance.now ? performance : Date, + setFrame = typeof window === "object" && window.requestAnimationFrame ? window.requestAnimationFrame.bind(window) : function(f) { setTimeout(f, 17); }; + + function now() { + return clockNow || (setFrame(clearNow), clockNow = clock.now() + clockSkew); + } -function d3_hsl_rgb(h, s, l) { - var m1, - m2; + function clearNow() { + clockNow = 0; + } - /* Some simple corrections for h, s and l. */ - h = isNaN(h) ? 0 : (h %= 360) < 0 ? h + 360 : h; - s = isNaN(s) ? 0 : s < 0 ? 0 : s > 1 ? 1 : s; - l = l < 0 ? 0 : l > 1 ? 1 : l; + function Timer() { + this._call = + this._time = + this._next = null; + } - /* From FvD 13.37, CSS Color Module Level 3 */ - m2 = l <= .5 ? l * (1 + s) : l + s - l * s; - m1 = 2 * l - m2; - - function v(h) { - if (h > 360) h -= 360; - else if (h < 0) h += 360; - if (h < 60) return m1 + (m2 - m1) * h / 60; - if (h < 180) return m2; - if (h < 240) return m1 + (m2 - m1) * (240 - h) / 60; - return m1; - } - - function vv(h) { - return Math.round(v(h) * 255); - } - - return d3_rgb(vv(h + 120), vv(h), vv(h - 120)); -} - -d3.hcl = function(h, c, l) { - return arguments.length === 1 - ? (h instanceof d3_Hcl ? d3_hcl(h.h, h.c, h.l) - : (h instanceof d3_Lab ? d3_lab_hcl(h.l, h.a, h.b) - : d3_lab_hcl((h = d3_rgb_lab((h = d3.rgb(h)).r, h.g, h.b)).l, h.a, h.b))) - : d3_hcl(+h, +c, +l); -}; - -function d3_hcl(h, c, l) { - return new d3_Hcl(h, c, l); -} - -function d3_Hcl(h, c, l) { - this.h = h; - this.c = c; - this.l = l; -} - -var d3_hclPrototype = d3_Hcl.prototype = new d3_Color; - -d3_hclPrototype.brighter = function(k) { - return d3_hcl(this.h, this.c, Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1))); -}; - -d3_hclPrototype.darker = function(k) { - return d3_hcl(this.h, this.c, Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1))); -}; - -d3_hclPrototype.rgb = function() { - return d3_hcl_lab(this.h, this.c, this.l).rgb(); -}; - -function d3_hcl_lab(h, c, l) { - if (isNaN(h)) h = 0; - if (isNaN(c)) c = 0; - return d3_lab(l, Math.cos(h *= d3_radians) * c, Math.sin(h) * c); -} - -d3.lab = function(l, a, b) { - return arguments.length === 1 - ? (l instanceof d3_Lab ? d3_lab(l.l, l.a, l.b) - : (l instanceof d3_Hcl ? d3_hcl_lab(l.l, l.c, l.h) - : d3_rgb_lab((l = d3.rgb(l)).r, l.g, l.b))) - : d3_lab(+l, +a, +b); -}; - -function d3_lab(l, a, b) { - return new d3_Lab(l, a, b); -} - -function d3_Lab(l, a, b) { - this.l = l; - this.a = a; - this.b = b; -} - -// Corresponds roughly to RGB brighter/darker -var d3_lab_K = 18; - -// D65 standard referent -var d3_lab_X = 0.950470, - d3_lab_Y = 1, - d3_lab_Z = 1.088830; - -var d3_labPrototype = d3_Lab.prototype = new d3_Color; - -d3_labPrototype.brighter = function(k) { - return d3_lab(Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)), this.a, this.b); -}; - -d3_labPrototype.darker = function(k) { - return d3_lab(Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)), this.a, this.b); -}; - -d3_labPrototype.rgb = function() { - return d3_lab_rgb(this.l, this.a, this.b); -}; - -function d3_lab_rgb(l, a, b) { - var y = (l + 16) / 116, - x = y + a / 500, - z = y - b / 200; - x = d3_lab_xyz(x) * d3_lab_X; - y = d3_lab_xyz(y) * d3_lab_Y; - z = d3_lab_xyz(z) * d3_lab_Z; - return d3_rgb( - d3_xyz_rgb( 3.2404542 * x - 1.5371385 * y - 0.4985314 * z), - d3_xyz_rgb(-0.9692660 * x + 1.8760108 * y + 0.0415560 * z), - d3_xyz_rgb( 0.0556434 * x - 0.2040259 * y + 1.0572252 * z) - ); -} - -function d3_lab_hcl(l, a, b) { - return l > 0 - ? d3_hcl(Math.atan2(b, a) * d3_degrees, Math.sqrt(a * a + b * b), l) - : d3_hcl(NaN, NaN, l); -} - -function d3_lab_xyz(x) { - return x > 0.206893034 ? x * x * x : (x - 4 / 29) / 7.787037; -} -function d3_xyz_lab(x) { - return x > 0.008856 ? Math.pow(x, 1 / 3) : 7.787037 * x + 4 / 29; -} - -function d3_xyz_rgb(r) { - return Math.round(255 * (r <= 0.00304 ? 12.92 * r : 1.055 * Math.pow(r, 1 / 2.4) - 0.055)); -} - -d3.rgb = function(r, g, b) { - return arguments.length === 1 - ? (r instanceof d3_Rgb ? d3_rgb(r.r, r.g, r.b) - : d3_rgb_parse("" + r, d3_rgb, d3_hsl_rgb)) - : d3_rgb(~~r, ~~g, ~~b); -}; - -function d3_rgbNumber(value) { - return d3_rgb(value >> 16, value >> 8 & 0xff, value & 0xff); -} - -function d3_rgbString(value) { - return d3_rgbNumber(value) + ""; -} - -function d3_rgb(r, g, b) { - return new d3_Rgb(r, g, b); -} - -function d3_Rgb(r, g, b) { - this.r = r; - this.g = g; - this.b = b; -} - -var d3_rgbPrototype = d3_Rgb.prototype = new d3_Color; - -d3_rgbPrototype.brighter = function(k) { - k = Math.pow(0.7, arguments.length ? k : 1); - var r = this.r, - g = this.g, - b = this.b, - i = 30; - if (!r && !g && !b) return d3_rgb(i, i, i); - if (r && r < i) r = i; - if (g && g < i) g = i; - if (b && b < i) b = i; - return d3_rgb(Math.min(255, ~~(r / k)), Math.min(255, ~~(g / k)), Math.min(255, ~~(b / k))); -}; - -d3_rgbPrototype.darker = function(k) { - k = Math.pow(0.7, arguments.length ? k : 1); - return d3_rgb(~~(k * this.r), ~~(k * this.g), ~~(k * this.b)); -}; - -d3_rgbPrototype.hsl = function() { - return d3_rgb_hsl(this.r, this.g, this.b); -}; - -d3_rgbPrototype.toString = function() { - return "#" + d3_rgb_hex(this.r) + d3_rgb_hex(this.g) + d3_rgb_hex(this.b); -}; - -function d3_rgb_hex(v) { - return v < 0x10 - ? "0" + Math.max(0, v).toString(16) - : Math.min(255, v).toString(16); -} - -function d3_rgb_parse(format, rgb, hsl) { - var r = 0, // red channel; int in [0, 255] - g = 0, // green channel; int in [0, 255] - b = 0, // blue channel; int in [0, 255] - m1, // CSS color specification match - m2, // CSS color specification type (e.g., rgb) - name; - - /* Handle hsl, rgb. */ - m1 = /([a-z]+)\((.*)\)/i.exec(format); - if (m1) { - m2 = m1[2].split(","); - switch (m1[1]) { - case "hsl": { - return hsl( - parseFloat(m2[0]), // degrees - parseFloat(m2[1]) / 100, // percentage - parseFloat(m2[2]) / 100 // percentage - ); + Timer.prototype = timer.prototype = { + constructor: Timer, + restart: function(callback, delay, time) { + if (typeof callback !== "function") throw new TypeError("callback is not a function"); + time = (time == null ? now() : +time) + (delay == null ? 0 : +delay); + if (!this._next && taskTail !== this) { + if (taskTail) taskTail._next = this; + else taskHead = this; + taskTail = this; } - case "rgb": { - return rgb( - d3_rgb_parseNumber(m2[0]), - d3_rgb_parseNumber(m2[1]), - d3_rgb_parseNumber(m2[2]) - ); + this._call = callback; + this._time = time; + sleep(); + }, + stop: function() { + if (this._call) { + this._call = null; + this._time = Infinity; + sleep(); } } - } + }; - /* Named colors. */ - if (name = d3_rgb_names.get(format)) return rgb(name.r, name.g, name.b); + function timer(callback, delay, time) { + var t = new Timer; + t.restart(callback, delay, time); + return t; + } - /* Hexadecimal colors: #rgb and #rrggbb. */ - if (format != null && format.charAt(0) === "#") { - if (format.length === 4) { - r = format.charAt(1); r += r; - g = format.charAt(2); g += g; - b = format.charAt(3); b += b; - } else if (format.length === 7) { - r = format.substring(1, 3); - g = format.substring(3, 5); - b = format.substring(5, 7); + function timerFlush() { + now(); // Get the current time, if not already set. + ++frame; // Pretend we’ve set an alarm, if we haven’t already. + var t = taskHead, e; + while (t) { + if ((e = clockNow - t._time) >= 0) t._call.call(null, e); + t = t._next; } - r = parseInt(r, 16); - g = parseInt(g, 16); - b = parseInt(b, 16); + --frame; } - return rgb(r, g, b); -} - -function d3_rgb_hsl(r, g, b) { - var min = Math.min(r /= 255, g /= 255, b /= 255), - max = Math.max(r, g, b), - d = max - min, - h, - s, - l = (max + min) / 2; - if (d) { - s = l < .5 ? d / (max + min) : d / (2 - max - min); - if (r == max) h = (g - b) / d + (g < b ? 6 : 0); - else if (g == max) h = (b - r) / d + 2; - else h = (r - g) / d + 4; - h *= 60; - } else { - h = NaN; - s = l > 0 && l < 1 ? 0 : h; - } - return d3_hsl(h, s, l); -} - -function d3_rgb_lab(r, g, b) { - r = d3_rgb_xyz(r); - g = d3_rgb_xyz(g); - b = d3_rgb_xyz(b); - var x = d3_xyz_lab((0.4124564 * r + 0.3575761 * g + 0.1804375 * b) / d3_lab_X), - y = d3_xyz_lab((0.2126729 * r + 0.7151522 * g + 0.0721750 * b) / d3_lab_Y), - z = d3_xyz_lab((0.0193339 * r + 0.1191920 * g + 0.9503041 * b) / d3_lab_Z); - return d3_lab(116 * y - 16, 500 * (x - y), 200 * (y - z)); -} - -function d3_rgb_xyz(r) { - return (r /= 255) <= 0.04045 ? r / 12.92 : Math.pow((r + 0.055) / 1.055, 2.4); -} - -function d3_rgb_parseNumber(c) { // either integer or percentage - var f = parseFloat(c); - return c.charAt(c.length - 1) === "%" ? Math.round(f * 2.55) : f; -} - -var d3_rgb_names = d3.map({ - aliceblue: 0xf0f8ff, - antiquewhite: 0xfaebd7, - aqua: 0x00ffff, - aquamarine: 0x7fffd4, - azure: 0xf0ffff, - beige: 0xf5f5dc, - bisque: 0xffe4c4, - black: 0x000000, - blanchedalmond: 0xffebcd, - blue: 0x0000ff, - blueviolet: 0x8a2be2, - brown: 0xa52a2a, - burlywood: 0xdeb887, - cadetblue: 0x5f9ea0, - chartreuse: 0x7fff00, - chocolate: 0xd2691e, - coral: 0xff7f50, - cornflowerblue: 0x6495ed, - cornsilk: 0xfff8dc, - crimson: 0xdc143c, - cyan: 0x00ffff, - darkblue: 0x00008b, - darkcyan: 0x008b8b, - darkgoldenrod: 0xb8860b, - darkgray: 0xa9a9a9, - darkgreen: 0x006400, - darkgrey: 0xa9a9a9, - darkkhaki: 0xbdb76b, - darkmagenta: 0x8b008b, - darkolivegreen: 0x556b2f, - darkorange: 0xff8c00, - darkorchid: 0x9932cc, - darkred: 0x8b0000, - darksalmon: 0xe9967a, - darkseagreen: 0x8fbc8f, - darkslateblue: 0x483d8b, - darkslategray: 0x2f4f4f, - darkslategrey: 0x2f4f4f, - darkturquoise: 0x00ced1, - darkviolet: 0x9400d3, - deeppink: 0xff1493, - deepskyblue: 0x00bfff, - dimgray: 0x696969, - dimgrey: 0x696969, - dodgerblue: 0x1e90ff, - firebrick: 0xb22222, - floralwhite: 0xfffaf0, - forestgreen: 0x228b22, - fuchsia: 0xff00ff, - gainsboro: 0xdcdcdc, - ghostwhite: 0xf8f8ff, - gold: 0xffd700, - goldenrod: 0xdaa520, - gray: 0x808080, - green: 0x008000, - greenyellow: 0xadff2f, - grey: 0x808080, - honeydew: 0xf0fff0, - hotpink: 0xff69b4, - indianred: 0xcd5c5c, - indigo: 0x4b0082, - ivory: 0xfffff0, - khaki: 0xf0e68c, - lavender: 0xe6e6fa, - lavenderblush: 0xfff0f5, - lawngreen: 0x7cfc00, - lemonchiffon: 0xfffacd, - lightblue: 0xadd8e6, - lightcoral: 0xf08080, - lightcyan: 0xe0ffff, - lightgoldenrodyellow: 0xfafad2, - lightgray: 0xd3d3d3, - lightgreen: 0x90ee90, - lightgrey: 0xd3d3d3, - lightpink: 0xffb6c1, - lightsalmon: 0xffa07a, - lightseagreen: 0x20b2aa, - lightskyblue: 0x87cefa, - lightslategray: 0x778899, - lightslategrey: 0x778899, - lightsteelblue: 0xb0c4de, - lightyellow: 0xffffe0, - lime: 0x00ff00, - limegreen: 0x32cd32, - linen: 0xfaf0e6, - magenta: 0xff00ff, - maroon: 0x800000, - mediumaquamarine: 0x66cdaa, - mediumblue: 0x0000cd, - mediumorchid: 0xba55d3, - mediumpurple: 0x9370db, - mediumseagreen: 0x3cb371, - mediumslateblue: 0x7b68ee, - mediumspringgreen: 0x00fa9a, - mediumturquoise: 0x48d1cc, - mediumvioletred: 0xc71585, - midnightblue: 0x191970, - mintcream: 0xf5fffa, - mistyrose: 0xffe4e1, - moccasin: 0xffe4b5, - navajowhite: 0xffdead, - navy: 0x000080, - oldlace: 0xfdf5e6, - olive: 0x808000, - olivedrab: 0x6b8e23, - orange: 0xffa500, - orangered: 0xff4500, - orchid: 0xda70d6, - palegoldenrod: 0xeee8aa, - palegreen: 0x98fb98, - paleturquoise: 0xafeeee, - palevioletred: 0xdb7093, - papayawhip: 0xffefd5, - peachpuff: 0xffdab9, - peru: 0xcd853f, - pink: 0xffc0cb, - plum: 0xdda0dd, - powderblue: 0xb0e0e6, - purple: 0x800080, - red: 0xff0000, - rosybrown: 0xbc8f8f, - royalblue: 0x4169e1, - saddlebrown: 0x8b4513, - salmon: 0xfa8072, - sandybrown: 0xf4a460, - seagreen: 0x2e8b57, - seashell: 0xfff5ee, - sienna: 0xa0522d, - silver: 0xc0c0c0, - skyblue: 0x87ceeb, - slateblue: 0x6a5acd, - slategray: 0x708090, - slategrey: 0x708090, - snow: 0xfffafa, - springgreen: 0x00ff7f, - steelblue: 0x4682b4, - tan: 0xd2b48c, - teal: 0x008080, - thistle: 0xd8bfd8, - tomato: 0xff6347, - turquoise: 0x40e0d0, - violet: 0xee82ee, - wheat: 0xf5deb3, - white: 0xffffff, - whitesmoke: 0xf5f5f5, - yellow: 0xffff00, - yellowgreen: 0x9acd32 -}); - -d3_rgb_names.forEach(function(key, value) { - d3_rgb_names.set(key, d3_rgbNumber(value)); -}); - -d3.interpolateRgb = d3_interpolateRgb; - -function d3_interpolateRgb(a, b) { - a = d3.rgb(a); - b = d3.rgb(b); - var ar = a.r, - ag = a.g, - ab = a.b, - br = b.r - ar, - bg = b.g - ag, - bb = b.b - ab; - return function(t) { - return "#" - + d3_rgb_hex(Math.round(ar + br * t)) - + d3_rgb_hex(Math.round(ag + bg * t)) - + d3_rgb_hex(Math.round(ab + bb * t)); - }; -} - -d3.interpolateObject = d3_interpolateObject; - -function d3_interpolateObject(a, b) { - var i = {}, - c = {}, - k; - for (k in a) { - if (k in b) { - i[k] = d3_interpolate(a[k], b[k]); - } else { - c[k] = a[k]; + function wake() { + clockNow = (clockLast = clock.now()) + clockSkew; + frame = timeout = 0; + try { + timerFlush(); + } finally { + frame = 0; + nap(); + clockNow = 0; } } - for (k in b) { - if (!(k in a)) { - c[k] = b[k]; - } + + function poke() { + var now = clock.now(), delay = now - clockLast; + if (delay > pokeDelay) clockSkew -= delay, clockLast = now; } - return function(t) { - for (k in i) c[k] = i[k](t); - return c; - }; -} - -d3.interpolateArray = d3_interpolateArray; - -function d3_interpolateArray(a, b) { - var x = [], - c = [], - na = a.length, - nb = b.length, - n0 = Math.min(a.length, b.length), - i; - for (i = 0; i < n0; ++i) x.push(d3_interpolate(a[i], b[i])); - for (; i < na; ++i) c[i] = a[i]; - for (; i < nb; ++i) c[i] = b[i]; - return function(t) { - for (i = 0; i < n0; ++i) c[i] = x[i](t); - return c; - }; -} -d3.interpolateNumber = d3_interpolateNumber; - -function d3_interpolateNumber(a, b) { - b -= a = +a; - return function(t) { return a + b * t; }; -} - -d3.interpolateString = d3_interpolateString; - -function d3_interpolateString(a, b) { - var m, // current match - i, // current index - j, // current index (for coalescing) - s0 = 0, // start index of current string prefix - s1 = 0, // end index of current string prefix - s = [], // string constants and placeholders - q = [], // number interpolators - n, // q.length - o; - - // Coerce inputs to strings. - a = a + "", b = b + ""; - - // Reset our regular expression! - d3_interpolate_number.lastIndex = 0; - - // Find all numbers in b. - for (i = 0; m = d3_interpolate_number.exec(b); ++i) { - if (m.index) s.push(b.substring(s0, s1 = m.index)); - q.push({i: s.length, x: m[0]}); - s.push(null); - s0 = d3_interpolate_number.lastIndex; - } - if (s0 < b.length) s.push(b.substring(s0)); - - // Find all numbers in a. - for (i = 0, n = q.length; (m = d3_interpolate_number.exec(a)) && i < n; ++i) { - o = q[i]; - if (o.x == m[0]) { // The numbers match, so coalesce. - if (o.i) { - if (s[o.i + 1] == null) { // This match is followed by another number. - s[o.i - 1] += o.x; - s.splice(o.i, 1); - for (j = i + 1; j < n; ++j) q[j].i--; - } else { // This match is followed by a string, so coalesce twice. - s[o.i - 1] += o.x + s[o.i + 1]; - s.splice(o.i, 2); - for (j = i + 1; j < n; ++j) q[j].i -= 2; - } + + function nap() { + var t0, t1 = taskHead, t2, time = Infinity; + while (t1) { + if (t1._call) { + if (time > t1._time) time = t1._time; + t0 = t1, t1 = t1._next; } else { - if (s[o.i + 1] == null) { // This match is followed by another number. - s[o.i] = o.x; - } else { // This match is followed by a string, so coalesce twice. - s[o.i] = o.x + s[o.i + 1]; - s.splice(o.i + 1, 1); - for (j = i + 1; j < n; ++j) q[j].i--; - } + t2 = t1._next, t1._next = null; + t1 = t0 ? t0._next = t2 : taskHead = t2; } - q.splice(i, 1); - n--; - i--; - } else { - o.x = d3_interpolateNumber(parseFloat(m[0]), parseFloat(o.x)); } + taskTail = t0; + sleep(time); } - // Remove any numbers in b not found in a. - while (i < n) { - o = q.pop(); - if (s[o.i + 1] == null) { // This match is followed by another number. - s[o.i] = o.x; - } else { // This match is followed by a string, so coalesce twice. - s[o.i] = o.x + s[o.i + 1]; - s.splice(o.i + 1, 1); + function sleep(time) { + if (frame) return; // Soonest alarm already set, or will be. + if (timeout) timeout = clearTimeout(timeout); + var delay = time - clockNow; // Strictly less than if we recomputed clockNow. + if (delay > 24) { + if (time < Infinity) timeout = setTimeout(wake, time - clock.now() - clockSkew); + if (interval) interval = clearInterval(interval); + } else { + if (!interval) clockLast = clock.now(), interval = setInterval(poke, pokeDelay); + frame = 1, setFrame(wake); } - n--; } - // Special optimization for only a single match. - if (s.length === 1) { - return s[0] == null - ? (o = q[0].x, function(t) { return o(t) + ""; }) - : function() { return b; }; + function timeout$1(callback, delay, time) { + var t = new Timer; + delay = delay == null ? 0 : +delay; + t.restart(function(elapsed) { + t.stop(); + callback(elapsed + delay); + }, delay, time); + return t; } - // Otherwise, interpolate each of the numbers and rejoin the string. - return function(t) { - for (i = 0; i < n; ++i) s[(o = q[i]).i] = o.x(t); - return s.join(""); - }; -} - -var d3_interpolate_number = /[-+]?(?:\d+\.?\d*|\.?\d+)(?:[eE][-+]?\d+)?/g; - -d3.interpolate = d3_interpolate; - -function d3_interpolate(a, b) { - var i = d3.interpolators.length, f; - while (--i >= 0 && !(f = d3.interpolators[i](a, b))); - return f; -} - -d3.interpolators = [ - function(a, b) { - var t = typeof b; - return (t === "string" ? (d3_rgb_names.has(b) || /^(#|rgb\(|hsl\()/.test(b) ? d3_interpolateRgb : d3_interpolateString) - : b instanceof d3_Color ? d3_interpolateRgb - : t === "object" ? (Array.isArray(b) ? d3_interpolateArray : d3_interpolateObject) - : d3_interpolateNumber)(a, b); - } -]; - -d3.transform = function(string) { - var g = d3_document.createElementNS(d3.ns.prefix.svg, "g"); - return (d3.transform = function(string) { - if (string != null) { - g.setAttribute("transform", string); - var t = g.transform.baseVal.consolidate(); - } - return new d3_transform(t ? t.matrix : d3_transformIdentity); - })(string); -}; - -// Compute x-scale and normalize the first row. -// Compute shear and make second row orthogonal to first. -// Compute y-scale and normalize the second row. -// Finally, compute the rotation. -function d3_transform(m) { - var r0 = [m.a, m.b], - r1 = [m.c, m.d], - kx = d3_transformNormalize(r0), - kz = d3_transformDot(r0, r1), - ky = d3_transformNormalize(d3_transformCombine(r1, r0, -kz)) || 0; - if (r0[0] * r1[1] < r1[0] * r0[1]) { - r0[0] *= -1; - r0[1] *= -1; - kx *= -1; - kz *= -1; - } - this.rotate = (kx ? Math.atan2(r0[1], r0[0]) : Math.atan2(-r1[0], r1[1])) * d3_degrees; - this.translate = [m.e, m.f]; - this.scale = [kx, ky]; - this.skew = ky ? Math.atan2(kz, ky) * d3_degrees : 0; -}; - -d3_transform.prototype.toString = function() { - return "translate(" + this.translate - + ")rotate(" + this.rotate - + ")skewX(" + this.skew - + ")scale(" + this.scale - + ")"; -}; - -function d3_transformDot(a, b) { - return a[0] * b[0] + a[1] * b[1]; -} - -function d3_transformNormalize(a) { - var k = Math.sqrt(d3_transformDot(a, a)); - if (k) { - a[0] /= k; - a[1] /= k; - } - return k; -} - -function d3_transformCombine(a, b, k) { - a[0] += k * b[0]; - a[1] += k * b[1]; - return a; -} - -var d3_transformIdentity = {a: 1, b: 0, c: 0, d: 1, e: 0, f: 0}; - -d3.interpolateTransform = d3_interpolateTransform; - -function d3_interpolateTransform(a, b) { - var s = [], // string constants and placeholders - q = [], // number interpolators - n, - A = d3.transform(a), - B = d3.transform(b), - ta = A.translate, - tb = B.translate, - ra = A.rotate, - rb = B.rotate, - wa = A.skew, - wb = B.skew, - ka = A.scale, - kb = B.scale; - - if (ta[0] != tb[0] || ta[1] != tb[1]) { - s.push("translate(", null, ",", null, ")"); - q.push({i: 1, x: d3_interpolateNumber(ta[0], tb[0])}, {i: 3, x: d3_interpolateNumber(ta[1], tb[1])}); - } else if (tb[0] || tb[1]) { - s.push("translate(" + tb + ")"); - } else { - s.push(""); + function interval$1(callback, delay, time) { + var t = new Timer, total = delay; + if (delay == null) return t.restart(callback, delay, time), t; + delay = +delay, time = time == null ? now() : +time; + t.restart(function tick(elapsed) { + elapsed += total; + t.restart(tick, total += delay, time); + callback(elapsed); + }, delay, time); + return t; } - if (ra != rb) { - if (ra - rb > 180) rb += 360; else if (rb - ra > 180) ra += 360; // shortest path - q.push({i: s.push(s.pop() + "rotate(", null, ")") - 2, x: d3_interpolateNumber(ra, rb)}); - } else if (rb) { - s.push(s.pop() + "rotate(" + rb + ")"); + var emptyOn = dispatch("start", "end", "interrupt"); + var emptyTween = []; + + var CREATED = 0; + var SCHEDULED = 1; + var STARTING = 2; + var STARTED = 3; + var RUNNING = 4; + var ENDING = 5; + var ENDED = 6; + + function schedule(node, name, id, index, group, timing) { + var schedules = node.__transition; + if (!schedules) node.__transition = {}; + else if (id in schedules) return; + create$1(node, id, { + name: name, + index: index, // For context during callback. + group: group, // For context during callback. + on: emptyOn, + tween: emptyTween, + time: timing.time, + delay: timing.delay, + duration: timing.duration, + ease: timing.ease, + timer: null, + state: CREATED + }); } - if (wa != wb) { - q.push({i: s.push(s.pop() + "skewX(", null, ")") - 2, x: d3_interpolateNumber(wa, wb)}); - } else if (wb) { - s.push(s.pop() + "skewX(" + wb + ")"); + function init(node, id) { + var schedule = get$1(node, id); + if (schedule.state > CREATED) throw new Error("too late; already scheduled"); + return schedule; } - if (ka[0] != kb[0] || ka[1] != kb[1]) { - n = s.push(s.pop() + "scale(", null, ",", null, ")"); - q.push({i: n - 4, x: d3_interpolateNumber(ka[0], kb[0])}, {i: n - 2, x: d3_interpolateNumber(ka[1], kb[1])}); - } else if (kb[0] != 1 || kb[1] != 1) { - s.push(s.pop() + "scale(" + kb + ")"); + function set$1(node, id) { + var schedule = get$1(node, id); + if (schedule.state > STARTING) throw new Error("too late; already started"); + return schedule; } - n = q.length; - return function(t) { - var i = -1, o; - while (++i < n) s[(o = q[i]).i] = o.x(t); - return s.join(""); - }; -} - -d3_transitionPrototype.tween = function(name, tween) { - var id = this.id; - if (arguments.length < 2) return this.node().__transition__[id].tween.get(name); - return d3_selection_each(this, tween == null - ? function(node) { node.__transition__[id].tween.remove(name); } - : function(node) { node.__transition__[id].tween.set(name, tween); }); -}; - -function d3_transition_tween(groups, name, value, tween) { - var id = groups.id; - return d3_selection_each(groups, typeof value === "function" - ? function(node, i, j) { node.__transition__[id].tween.set(name, tween(value.call(node, node.__data__, i, j))); } - : (value = tween(value), function(node) { node.__transition__[id].tween.set(name, value); })); -} - -d3_transitionPrototype.attr = function(nameNS, value) { - if (arguments.length < 2) { - - // For attr(object), the object specifies the names and values of the - // attributes to transition. The values may be functions that are - // evaluated for each element. - for (value in nameNS) this.attr(value, nameNS[value]); - return this; + function get$1(node, id) { + var schedule = node.__transition; + if (!schedule || !(schedule = schedule[id])) throw new Error("transition not found"); + return schedule; } - var interpolate = nameNS == "transform" ? d3_interpolateTransform : d3_interpolate, - name = d3.ns.qualify(nameNS); + function create$1(node, id, self) { + var schedules = node.__transition, + tween; - // For attr(string, null), remove the attribute with the specified name. - function attrNull() { - this.removeAttribute(name); - } - function attrNullNS() { - this.removeAttributeNS(name.space, name.local); + // Initialize the self timer when the transition is created. + // Note the actual delay is not known until the first callback! + schedules[id] = self; + self.timer = timer(schedule, 0, self.time); + + function schedule(elapsed) { + self.state = SCHEDULED; + self.timer.restart(start, self.delay, self.time); + + // If the elapsed delay is less than our first sleep, start immediately. + if (self.delay <= elapsed) start(elapsed - self.delay); + } + + function start(elapsed) { + var i, j, n, o; + + // If the state is not SCHEDULED, then we previously errored on start. + if (self.state !== SCHEDULED) return stop(); + + for (i in schedules) { + o = schedules[i]; + if (o.name !== self.name) continue; + + // While this element already has a starting transition during this frame, + // defer starting an interrupting transition until that transition has a + // chance to tick (and possibly end); see d3/d3-transition#54! + if (o.state === STARTED) return timeout$1(start); + + // Interrupt the active transition, if any. + // Dispatch the interrupt event. + if (o.state === RUNNING) { + o.state = ENDED; + o.timer.stop(); + o.on.call("interrupt", node, node.__data__, o.index, o.group); + delete schedules[i]; + } + + // Cancel any pre-empted transitions. No interrupt event is dispatched + // because the cancelled transitions never started. Note that this also + // removes this transition from the pending list! + else if (+i < id) { + o.state = ENDED; + o.timer.stop(); + delete schedules[i]; + } + } + + // Defer the first tick to end of the current frame; see d3/d3#1576. + // Note the transition may be canceled after start and before the first tick! + // Note this must be scheduled before the start event; see d3/d3-transition#16! + // Assuming this is successful, subsequent callbacks go straight to tick. + timeout$1(function() { + if (self.state === STARTED) { + self.state = RUNNING; + self.timer.restart(tick, self.delay, self.time); + tick(elapsed); + } + }); + + // Dispatch the start event. + // Note this must be done before the tween are initialized. + self.state = STARTING; + self.on.call("start", node, node.__data__, self.index, self.group); + if (self.state !== STARTING) return; // interrupted + self.state = STARTED; + + // Initialize the tween, deleting null tween. + tween = new Array(n = self.tween.length); + for (i = 0, j = -1; i < n; ++i) { + if (o = self.tween[i].value.call(node, node.__data__, self.index, self.group)) { + tween[++j] = o; + } + } + tween.length = j + 1; + } + + function tick(elapsed) { + var t = elapsed < self.duration ? self.ease.call(null, elapsed / self.duration) : (self.timer.restart(stop), self.state = ENDING, 1), + i = -1, + n = tween.length; + + while (++i < n) { + tween[i].call(null, t); + } + + // Dispatch the end event. + if (self.state === ENDING) { + self.on.call("end", node, node.__data__, self.index, self.group); + stop(); + } + } + + function stop() { + self.state = ENDED; + self.timer.stop(); + delete schedules[id]; + for (var i in schedules) return; // eslint-disable-line no-unused-vars + delete node.__transition; + } } - // For attr(string, string), set the attribute with the specified name. - function attrTween(b) { - return b == null ? attrNull : (b += "", function() { - var a = this.getAttribute(name), i; - return a !== b && (i = interpolate(a, b), function(t) { this.setAttribute(name, i(t)); }); - }); + function interrupt(node, name) { + var schedules = node.__transition, + schedule$$1, + active, + empty = true, + i; + + if (!schedules) return; + + name = name == null ? null : name + ""; + + for (i in schedules) { + if ((schedule$$1 = schedules[i]).name !== name) { empty = false; continue; } + active = schedule$$1.state > STARTING && schedule$$1.state < ENDING; + schedule$$1.state = ENDED; + schedule$$1.timer.stop(); + if (active) schedule$$1.on.call("interrupt", node, node.__data__, schedule$$1.index, schedule$$1.group); + delete schedules[i]; + } + + if (empty) delete node.__transition; } - function attrTweenNS(b) { - return b == null ? attrNullNS : (b += "", function() { - var a = this.getAttributeNS(name.space, name.local), i; - return a !== b && (i = interpolate(a, b), function(t) { this.setAttributeNS(name.space, name.local, i(t)); }); + + function selection_interrupt(name) { + return this.each(function() { + interrupt(this, name); }); } - return d3_transition_tween(this, "attr." + nameNS, value, name.local ? attrTweenNS : attrTween); -}; - -d3_transitionPrototype.attrTween = function(nameNS, tween) { - var name = d3.ns.qualify(nameNS); + function tweenRemove(id, name) { + var tween0, tween1; + return function() { + var schedule$$1 = set$1(this, id), + tween = schedule$$1.tween; + + // If this node shared tween with the previous node, + // just assign the updated shared tween and we’re done! + // Otherwise, copy-on-write. + if (tween !== tween0) { + tween1 = tween0 = tween; + for (var i = 0, n = tween1.length; i < n; ++i) { + if (tween1[i].name === name) { + tween1 = tween1.slice(); + tween1.splice(i, 1); + break; + } + } + } - function attrTween(d, i) { - var f = tween.call(this, d, i, this.getAttribute(name)); - return f && function(t) { this.setAttribute(name, f(t)); }; + schedule$$1.tween = tween1; + }; } - function attrTweenNS(d, i) { - var f = tween.call(this, d, i, this.getAttributeNS(name.space, name.local)); - return f && function(t) { this.setAttributeNS(name.space, name.local, f(t)); }; + + function tweenFunction(id, name, value) { + var tween0, tween1; + if (typeof value !== "function") throw new Error; + return function() { + var schedule$$1 = set$1(this, id), + tween = schedule$$1.tween; + + // If this node shared tween with the previous node, + // just assign the updated shared tween and we’re done! + // Otherwise, copy-on-write. + if (tween !== tween0) { + tween1 = (tween0 = tween).slice(); + for (var t = {name: name, value: value}, i = 0, n = tween1.length; i < n; ++i) { + if (tween1[i].name === name) { + tween1[i] = t; + break; + } + } + if (i === n) tween1.push(t); + } + + schedule$$1.tween = tween1; + }; } - return this.tween("attr." + nameNS, name.local ? attrTweenNS : attrTween); -}; + function transition_tween(name, value) { + var id = this._id; -d3_transitionPrototype.style = function(name, value, priority) { - var n = arguments.length; - if (n < 3) { + name += ""; - // For style(object) or style(object, string), the object specifies the - // names and values of the attributes to set or remove. The values may be - // functions that are evaluated for each element. The optional string - // specifies the priority. - if (typeof name !== "string") { - if (n < 2) value = ""; - for (priority in name) this.style(priority, name[priority], value); - return this; + if (arguments.length < 2) { + var tween = get$1(this.node(), id).tween; + for (var i = 0, n = tween.length, t; i < n; ++i) { + if ((t = tween[i]).name === name) { + return t.value; + } + } + return null; } - // For style(string, string) or style(string, function), use the default - // priority. The priority is ignored for style(string, null). - priority = ""; + return this.each((value == null ? tweenRemove : tweenFunction)(id, name, value)); } - // For style(name, null) or style(name, null, priority), remove the style - // property with the specified name. The priority is ignored. - function styleNull() { - this.style.removeProperty(name); - } + function tweenValue(transition, name, value) { + var id = transition._id; - // For style(name, string) or style(name, string, priority), set the style - // property with the specified name, using the specified priority. - // Otherwise, a name, value and priority are specified, and handled as below. - function styleString(b) { - return b == null ? styleNull : (b += "", function() { - var a = d3_window.getComputedStyle(this, null).getPropertyValue(name), i; - return a !== b && (i = d3_interpolate(a, b), function(t) { this.style.setProperty(name, i(t), priority); }); + transition.each(function() { + var schedule$$1 = set$1(this, id); + (schedule$$1.value || (schedule$$1.value = {}))[name] = value.apply(this, arguments); }); + + return function(node) { + return get$1(node, id).value[name]; + }; + } + + function interpolate$1(a, b) { + var c; + return (typeof b === "number" ? interpolateNumber + : b instanceof color ? interpolateRgb + : (c = color(b)) ? (b = c, interpolateRgb) + : interpolateString)(a, b); } - return d3_transition_tween(this, "style." + name, value, styleString); -}; + function attrRemove$1(name) { + return function() { + this.removeAttribute(name); + }; + } -d3_transitionPrototype.styleTween = function(name, tween, priority) { - if (arguments.length < 3) priority = ""; + function attrRemoveNS$1(fullname) { + return function() { + this.removeAttributeNS(fullname.space, fullname.local); + }; + } - function styleTween(d, i) { - var f = tween.call(this, d, i, d3_window.getComputedStyle(this, null).getPropertyValue(name)); - return f && function(t) { this.style.setProperty(name, f(t), priority); }; + function attrConstant$1(name, interpolate$$1, value1) { + var value00, + interpolate0; + return function() { + var value0 = this.getAttribute(name); + return value0 === value1 ? null + : value0 === value00 ? interpolate0 + : interpolate0 = interpolate$$1(value00 = value0, value1); + }; } - return this.tween("style." + name, styleTween); -}; + function attrConstantNS$1(fullname, interpolate$$1, value1) { + var value00, + interpolate0; + return function() { + var value0 = this.getAttributeNS(fullname.space, fullname.local); + return value0 === value1 ? null + : value0 === value00 ? interpolate0 + : interpolate0 = interpolate$$1(value00 = value0, value1); + }; + } -d3_transitionPrototype.text = function(value) { - return d3_transition_tween(this, "text", value, d3_transition_text); -}; + function attrFunction$1(name, interpolate$$1, value) { + var value00, + value10, + interpolate0; + return function() { + var value0, value1 = value(this); + if (value1 == null) return void this.removeAttribute(name); + value0 = this.getAttribute(name); + return value0 === value1 ? null + : value0 === value00 && value1 === value10 ? interpolate0 + : interpolate0 = interpolate$$1(value00 = value0, value10 = value1); + }; + } -function d3_transition_text(b) { - if (b == null) b = ""; - return function() { this.textContent = b; }; -} + function attrFunctionNS$1(fullname, interpolate$$1, value) { + var value00, + value10, + interpolate0; + return function() { + var value0, value1 = value(this); + if (value1 == null) return void this.removeAttributeNS(fullname.space, fullname.local); + value0 = this.getAttributeNS(fullname.space, fullname.local); + return value0 === value1 ? null + : value0 === value00 && value1 === value10 ? interpolate0 + : interpolate0 = interpolate$$1(value00 = value0, value10 = value1); + }; + } -d3_transitionPrototype.remove = function() { - return this.each("end.transition", function() { - var p; - if (this.__transition__.count < 2 && (p = this.parentNode)) p.removeChild(this); - }); -}; - -d3_transitionPrototype.ease = function(value) { - var id = this.id; - if (arguments.length < 1) return this.node().__transition__[id].ease; - if (typeof value !== "function") value = d3.ease.apply(d3, arguments); - return d3_selection_each(this, function(node) { node.__transition__[id].ease = value; }); -}; - -d3_transitionPrototype.delay = function(value) { - var id = this.id; - return d3_selection_each(this, typeof value === "function" - ? function(node, i, j) { node.__transition__[id].delay = +value.call(node, node.__data__, i, j); } - : (value = +value, function(node) { node.__transition__[id].delay = value; })); -}; - -d3_transitionPrototype.duration = function(value) { - var id = this.id; - return d3_selection_each(this, typeof value === "function" - ? function(node, i, j) { node.__transition__[id].duration = Math.max(1, value.call(node, node.__data__, i, j)); } - : (value = Math.max(1, value), function(node) { node.__transition__[id].duration = value; })); -}; - -d3_transitionPrototype.each = function(type, listener) { - var id = this.id; - if (arguments.length < 2) { - var inherit = d3_transitionInherit, - inheritId = d3_transitionInheritId; - d3_transitionInheritId = id; - d3_selection_each(this, function(node, i, j) { - d3_transitionInherit = node.__transition__[id]; - type.call(node, node.__data__, i, j); - }); - d3_transitionInherit = inherit; - d3_transitionInheritId = inheritId; - } else { - d3_selection_each(this, function(node) { - var transition = node.__transition__[id]; - (transition.event || (transition.event = d3.dispatch("start", "end"))).on(type, listener); - }); + function transition_attr(name, value) { + var fullname = namespace(name), i = fullname === "transform" ? interpolateTransformSvg : interpolate$1; + return this.attrTween(name, typeof value === "function" + ? (fullname.local ? attrFunctionNS$1 : attrFunction$1)(fullname, i, tweenValue(this, "attr." + name, value)) + : value == null ? (fullname.local ? attrRemoveNS$1 : attrRemove$1)(fullname) + : (fullname.local ? attrConstantNS$1 : attrConstant$1)(fullname, i, value + "")); } - return this; -}; - -d3_transitionPrototype.transition = function() { - var id0 = this.id, - id1 = ++d3_transitionId, - subgroups = [], - subgroup, - group, - node, - transition; - - for (var j = 0, m = this.length; j < m; j++) { - subgroups.push(subgroup = []); - for (var group = this[j], i = 0, n = group.length; i < n; i++) { - if (node = group[i]) { - transition = Object.create(node.__transition__[id0]); - transition.delay += transition.duration; - d3_transitionNode(node, i, id1, transition); - } - subgroup.push(node); + + function attrTweenNS(fullname, value) { + function tween() { + var node = this, i = value.apply(node, arguments); + return i && function(t) { + node.setAttributeNS(fullname.space, fullname.local, i(t)); + }; } + tween._value = value; + return tween; } - return d3_transition(subgroups, id1); -}; + function attrTween(name, value) { + function tween() { + var node = this, i = value.apply(node, arguments); + return i && function(t) { + node.setAttribute(name, i(t)); + }; + } + tween._value = value; + return tween; + } -function d3_transitionNode(node, i, id, inherit) { - var lock = node.__transition__ || (node.__transition__ = {active: 0, count: 0}), - transition = lock[id]; + function transition_attrTween(name, value) { + var key = "attr." + name; + if (arguments.length < 2) return (key = this.tween(key)) && key._value; + if (value == null) return this.tween(key, null); + if (typeof value !== "function") throw new Error; + var fullname = namespace(name); + return this.tween(key, (fullname.local ? attrTweenNS : attrTween)(fullname, value)); + } - if (!transition) { - var time = inherit.time; + function delayFunction(id, value) { + return function() { + init(this, id).delay = +value.apply(this, arguments); + }; + } - transition = lock[id] = { - tween: new d3_Map, - time: time, - ease: inherit.ease, - delay: inherit.delay, - duration: inherit.duration + function delayConstant(id, value) { + return value = +value, function() { + init(this, id).delay = value; }; + } - ++lock.count; + function transition_delay(value) { + var id = this._id; + + return arguments.length + ? this.each((typeof value === "function" + ? delayFunction + : delayConstant)(id, value)) + : get$1(this.node(), id).delay; + } - d3.timer(function(elapsed) { - var d = node.__data__, - ease = transition.ease, - delay = transition.delay, - duration = transition.duration, - timer = d3_timer_active, - tweened = []; + function durationFunction(id, value) { + return function() { + set$1(this, id).duration = +value.apply(this, arguments); + }; + } - timer.t = delay + time; - if (delay <= elapsed) return start(elapsed - delay); - timer.c = start; + function durationConstant(id, value) { + return value = +value, function() { + set$1(this, id).duration = value; + }; + } - function start(elapsed) { - if (lock.active > id) return stop(); - lock.active = id; - transition.event && transition.event.start.call(node, d, i); + function transition_duration(value) { + var id = this._id; - transition.tween.forEach(function(key, value) { - if (value = value.call(node, d, i)) { - tweened.push(value); - } - }); + return arguments.length + ? this.each((typeof value === "function" + ? durationFunction + : durationConstant)(id, value)) + : get$1(this.node(), id).duration; + } - d3.timer(function() { // defer to end of current frame - timer.c = tick(elapsed || 1) ? d3_true : tick; - return 1; - }, 0, time); - } + function easeConstant(id, value) { + if (typeof value !== "function") throw new Error; + return function() { + set$1(this, id).ease = value; + }; + } - function tick(elapsed) { - if (lock.active !== id) return stop(); + function transition_ease(value) { + var id = this._id; - var t = elapsed / duration, - e = ease(t), - n = tweened.length; + return arguments.length + ? this.each(easeConstant(id, value)) + : get$1(this.node(), id).ease; + } - while (n > 0) { - tweened[--n].call(node, e); - } + function transition_filter(match) { + if (typeof match !== "function") match = matcher$1(match); - if (t >= 1) { - transition.event && transition.event.end.call(node, d, i); - return stop(); + for (var groups = this._groups, m = groups.length, subgroups = new Array(m), j = 0; j < m; ++j) { + for (var group = groups[j], n = group.length, subgroup = subgroups[j] = [], node, i = 0; i < n; ++i) { + if ((node = group[i]) && match.call(node, node.__data__, i, group)) { + subgroup.push(node); } } + } - function stop() { - if (--lock.count) delete lock[id]; - else delete node.__transition__; - return 1; - } - }, 0, time); + return new Transition(subgroups, this._parents, this._name, this._id); } -} -d3.xhr = d3_xhrType(d3_identity); + function transition_merge(transition$$1) { + if (transition$$1._id !== this._id) throw new Error; -function d3_xhrType(response) { - return function(url, mimeType, callback) { - if (arguments.length === 2 && typeof mimeType === "function") callback = mimeType, mimeType = null; - return d3_xhr(url, mimeType, response, callback); - }; -} - -function d3_xhr(url, mimeType, response, callback) { - var xhr = {}, - dispatch = d3.dispatch("beforesend", "progress", "load", "error"), - headers = {}, - request = new XMLHttpRequest, - responseType = null; - - // If IE does not support CORS, use XDomainRequest. - if (d3_window.XDomainRequest - && !("withCredentials" in request) - && /^(http(s)?:)?\/\//.test(url)) request = new XDomainRequest; - - "onload" in request - ? request.onload = request.onerror = respond - : request.onreadystatechange = function() { request.readyState > 3 && respond(); }; - - function respond() { - var status = request.status, result; - if (!status && request.responseText || status >= 200 && status < 300 || status === 304) { - try { - result = response.call(xhr, request); - } catch (e) { - dispatch.error.call(xhr, e); - return; + for (var groups0 = this._groups, groups1 = transition$$1._groups, m0 = groups0.length, m1 = groups1.length, m = Math.min(m0, m1), merges = new Array(m0), j = 0; j < m; ++j) { + for (var group0 = groups0[j], group1 = groups1[j], n = group0.length, merge = merges[j] = new Array(n), node, i = 0; i < n; ++i) { + if (node = group0[i] || group1[i]) { + merge[i] = node; + } } - dispatch.load.call(xhr, result); - } else { - dispatch.error.call(xhr, request); } - } - request.onprogress = function(event) { - var o = d3.event; - d3.event = event; - try { dispatch.progress.call(xhr, request); } - finally { d3.event = o; } - }; + for (; j < m0; ++j) { + merges[j] = groups0[j]; + } - xhr.header = function(name, value) { - name = (name + "").toLowerCase(); - if (arguments.length < 2) return headers[name]; - if (value == null) delete headers[name]; - else headers[name] = value + ""; - return xhr; - }; + return new Transition(merges, this._parents, this._name, this._id); + } - // If mimeType is non-null and no Accept header is set, a default is used. - xhr.mimeType = function(value) { - if (!arguments.length) return mimeType; - mimeType = value == null ? null : value + ""; - return xhr; - }; + function start(name) { + return (name + "").trim().split(/^|\s+/).every(function(t) { + var i = t.indexOf("."); + if (i >= 0) t = t.slice(0, i); + return !t || t === "start"; + }); + } - // Specifies what type the response value should take; - // for instance, arraybuffer, blob, document, or text. - xhr.responseType = function(value) { - if (!arguments.length) return responseType; - responseType = value; - return xhr; - }; + function onFunction(id, name, listener) { + var on0, on1, sit = start(name) ? init : set$1; + return function() { + var schedule$$1 = sit(this, id), + on = schedule$$1.on; - // Specify how to convert the response content to a specific type; - // changes the callback value on "load" events. - xhr.response = function(value) { - response = value; - return xhr; - }; + // If this node shared a dispatch with the previous node, + // just assign the updated shared dispatch and we’re done! + // Otherwise, copy-on-write. + if (on !== on0) (on1 = (on0 = on).copy()).on(name, listener); - // Convenience methods. - ["get", "post"].forEach(function(method) { - xhr[method] = function() { - return xhr.send.apply(xhr, [method].concat(d3_array(arguments))); + schedule$$1.on = on1; }; - }); + } - // If callback is non-null, it will be used for error and load events. - xhr.send = function(method, data, callback) { - if (arguments.length === 2 && typeof data === "function") callback = data, data = null; - request.open(method, url, true); - if (mimeType != null && !("accept" in headers)) headers["accept"] = mimeType + ",*/*"; - if (request.setRequestHeader) for (var name in headers) request.setRequestHeader(name, headers[name]); - if (mimeType != null && request.overrideMimeType) request.overrideMimeType(mimeType); - if (responseType != null) request.responseType = responseType; - if (callback != null) xhr.on("error", callback).on("load", function(request) { callback(null, request); }); - dispatch.beforesend.call(xhr, request); - request.send(data == null ? null : data); - return xhr; - }; + function transition_on(name, listener) { + var id = this._id; - xhr.abort = function() { - request.abort(); - return xhr; - }; + return arguments.length < 2 + ? get$1(this.node(), id).on.on(name) + : this.each(onFunction(id, name, listener)); + } - d3.rebind(xhr, dispatch, "on"); - - return callback == null ? xhr : xhr.get(d3_xhr_fixCallback(callback)); -}; - -function d3_xhr_fixCallback(callback) { - return callback.length === 1 - ? function(error, request) { callback(error == null ? request : null); } - : callback; -} - -d3.text = d3_xhrType(function(request) { - return request.responseText; -}); - -d3.json = function(url, callback) { - return d3_xhr(url, "application/json", d3_json, callback); -}; - -function d3_json(request) { - return JSON.parse(request.responseText); -} - -d3.html = function(url, callback) { - return d3_xhr(url, "text/html", d3_html, callback); -}; - -function d3_html(request) { - var range = d3_document.createRange(); - range.selectNode(d3_document.body); - return range.createContextualFragment(request.responseText); -} - -d3.xml = d3_xhrType(function(request) { - return request.responseXML; -}); - return d3; -})(); -d3.combobox = function() { - var event = d3.dispatch('accept'), - data = [], - suggestions = []; - - var fetcher = function(val, cb) { - cb(data.filter(function(d) { - return d.value - .toString() - .toLowerCase() - .indexOf(val.toLowerCase()) !== -1; - })); + function removeFunction(id) { + return function() { + var parent = this.parentNode; + for (var i in this.__transition) if (+i !== id) return; + if (parent) parent.removeChild(this); }; + } - var combobox = function(input) { - var idx = -1, - container = d3.select(document.body) - .selectAll('div.combobox') - .filter(function(d) { return d === input.node(); }), - shown = !container.empty(); - - input - .classed('combobox-input', true) - .on('focus.typeahead', focus) - .on('blur.typeahead', blur) - .on('keydown.typeahead', keydown) - .on('keyup.typeahead', keyup) - .on('input.typeahead', change) - .each(function() { - var parent = this.parentNode, - sibling = this.nextSibling; - - var caret = d3.select(parent).selectAll('.combobox-caret') - .filter(function(d) { return d === input.node(); }) - .data([input.node()]); - - caret.enter().insert('div', function() { return sibling; }) - .attr('class', 'combobox-caret'); - - caret - .on('mousedown', function () { - // prevent the form element from blurring. it blurs - // on mousedown - d3.event.stopPropagation(); - d3.event.preventDefault(); - input.node().focus(); - fetch('', render); - }); - }); + function transition_remove() { + return this.on("end.remove", removeFunction(this._id)); + } - function focus() { - fetch(value(), render); - } + function transition_select(select$$1) { + var name = this._name, + id = this._id; - function blur() { - window.setTimeout(hide, 150); - } + if (typeof select$$1 !== "function") select$$1 = selector(select$$1); - function show() { - if (!shown) { - container = d3.select(document.body) - .insert('div', ':first-child') - .datum(input.node()) - .attr('class', 'combobox') - .style({ - position: 'absolute', - display: 'block', - left: '0px' - }) - .on('mousedown', function () { - // prevent moving focus out of the text field - d3.event.preventDefault(); - }); - - d3.select(document.body) - .on('scroll.combobox', render, true); - - shown = true; - } + for (var groups = this._groups, m = groups.length, subgroups = new Array(m), j = 0; j < m; ++j) { + for (var group = groups[j], n = group.length, subgroup = subgroups[j] = new Array(n), node, subnode, i = 0; i < n; ++i) { + if ((node = group[i]) && (subnode = select$$1.call(node, node.__data__, i, group))) { + if ("__data__" in node) subnode.__data__ = node.__data__; + subgroup[i] = subnode; + schedule(subgroup[i], name, id, i, subgroup, get$1(node, id)); } + } + } - function hide() { - if (shown) { - idx = -1; - container.remove(); - - d3.select(document.body) - .on('scroll.combobox', null); + return new Transition(subgroups, this._parents, name, id); + } - shown = false; - } - } + function transition_selectAll(select$$1) { + var name = this._name, + id = this._id; - function keydown() { - switch (d3.event.keyCode) { - // backspace, delete - case 8: - case 46: - input.on('input.typeahead', function() { - idx = -1; - render(); - input.on('input.typeahead', change); - }); - break; - // tab - case 9: - container.selectAll('a.selected').each(event.accept); - break; - // return - case 13: - d3.event.preventDefault(); - break; - // up arrow - case 38: - nav(-1); - d3.event.preventDefault(); - break; - // down arrow - case 40: - nav(+1); - d3.event.preventDefault(); - break; - } - d3.event.stopPropagation(); - } + if (typeof select$$1 !== "function") select$$1 = selectorAll(select$$1); - function keyup() { - switch (d3.event.keyCode) { - // escape - case 27: - hide(); - break; - // return - case 13: - container.selectAll('a.selected').each(event.accept); - hide(); - break; + for (var groups = this._groups, m = groups.length, subgroups = [], parents = [], j = 0; j < m; ++j) { + for (var group = groups[j], n = group.length, node, i = 0; i < n; ++i) { + if (node = group[i]) { + for (var children = select$$1.call(node, node.__data__, i, group), child, inherit = get$1(node, id), k = 0, l = children.length; k < l; ++k) { + if (child = children[k]) { + schedule(child, name, id, k, children, inherit); } + } + subgroups.push(children); + parents.push(node); } + } + } - function change() { - fetch(value(), function() { - autocomplete(); - render(); - }); - } + return new Transition(subgroups, parents, name, id); + } - function nav(dir) { - idx = Math.max(Math.min(idx + dir, suggestions.length - 1), 0); - input.property('value', suggestions[idx].value); - render(); - ensureVisible(); - } + var Selection$1 = selection.prototype.constructor; - function value() { - var value = input.property('value'), - start = input.property('selectionStart'), - end = input.property('selectionEnd'); + function transition_selection() { + return new Selection$1(this._groups, this._parents); + } - if (start && end) { - value = value.substring(0, start); - } - - return value; - } - - function fetch(v, cb) { - fetcher.call(input, v, function(_) { - suggestions = _; - cb(); - }); - } - - function autocomplete() { - var v = value(); - - idx = -1; - - if (!v) return; - - for (var i = 0; i < suggestions.length; i++) { - if (suggestions[i].value.toLowerCase().indexOf(v.toLowerCase()) === 0) { - var completion = v + suggestions[i].value.substr(v.length); - idx = i; - input.property('value', completion); - input.node().setSelectionRange(v.length, completion.length); - return; - } - } - } - - function render() { - if (suggestions.length > 1 && document.activeElement === input.node()) { - show(); - } else { - hide(); - return; - } - - var options = container - .selectAll('a.combobox-option') - .data(suggestions, function(d) { return d.value; }); - - options.enter().append('a') - .attr('class', 'combobox-option') - .text(function(d) { return d.value; }); - - options - .attr('title', function(d) { return d.title; }) - .classed('selected', function(d, i) { return i == idx; }) - .on('mouseover', select) - .on('click', accept) - .order(); + function styleRemove$1(name, interpolate$$1) { + var value00, + value10, + interpolate0; + return function() { + var value0 = styleValue(this, name), + value1 = (this.style.removeProperty(name), styleValue(this, name)); + return value0 === value1 ? null + : value0 === value00 && value1 === value10 ? interpolate0 + : interpolate0 = interpolate$$1(value00 = value0, value10 = value1); + }; + } - options.exit() - .remove(); + function styleRemoveEnd(name) { + return function() { + this.style.removeProperty(name); + }; + } - var rect = input.node().getBoundingClientRect(); + function styleConstant$1(name, interpolate$$1, value1) { + var value00, + interpolate0; + return function() { + var value0 = styleValue(this, name); + return value0 === value1 ? null + : value0 === value00 ? interpolate0 + : interpolate0 = interpolate$$1(value00 = value0, value1); + }; + } - container.style({ - 'left': rect.left + 'px', - 'width': rect.width + 'px', - 'top': rect.height + rect.top + 'px' - }); - } + function styleFunction$1(name, interpolate$$1, value) { + var value00, + value10, + interpolate0; + return function() { + var value0 = styleValue(this, name), + value1 = value(this); + if (value1 == null) value1 = (this.style.removeProperty(name), styleValue(this, name)); + return value0 === value1 ? null + : value0 === value00 && value1 === value10 ? interpolate0 + : interpolate0 = interpolate$$1(value00 = value0, value10 = value1); + }; + } - function select(d, i) { - idx = i; - render(); - } + function transition_style(name, value, priority) { + var i = (name += "") === "transform" ? interpolateTransformCss : interpolate$1; + return value == null ? this + .styleTween(name, styleRemove$1(name, i)) + .on("end.style." + name, styleRemoveEnd(name)) + : this.styleTween(name, typeof value === "function" + ? styleFunction$1(name, i, tweenValue(this, "style." + name, value)) + : styleConstant$1(name, i, value + ""), priority); + } - function ensureVisible() { - var node = container.selectAll('a.selected').node(); - if (node) node.scrollIntoView(); - } + function styleTween(name, value, priority) { + function tween() { + var node = this, i = value.apply(node, arguments); + return i && function(t) { + node.style.setProperty(name, i(t), priority); + }; + } + tween._value = value; + return tween; + } - function accept(d) { - if (!shown) return; - input - .property('value', d.value) - .trigger('change'); - event.accept(d); - hide(); - } - }; + function transition_styleTween(name, value, priority) { + var key = "style." + (name += ""); + if (arguments.length < 2) return (key = this.tween(key)) && key._value; + if (value == null) return this.tween(key, null); + if (typeof value !== "function") throw new Error; + return this.tween(key, styleTween(name, value, priority == null ? "" : priority)); + } - combobox.fetcher = function(_) { - if (!arguments.length) return fetcher; - fetcher = _; - return combobox; + function textConstant$1(value) { + return function() { + this.textContent = value; }; + } - combobox.data = function(_) { - if (!arguments.length) return data; - data = _; - return combobox; + function textFunction$1(value) { + return function() { + var value1 = value(this); + this.textContent = value1 == null ? "" : value1; }; + } - return d3.rebind(combobox, event, 'on'); -}; -d3.geo.tile = function() { - var size = [960, 500], - scale = 256, - scaleExtent = [0, 20], - translate = [size[0] / 2, size[1] / 2], - zoomDelta = 0; - - function bound(_) { - return Math.min(scaleExtent[1], Math.max(scaleExtent[0], _)); - } - - function tile() { - var z = Math.max(Math.log(scale) / Math.LN2 - 8, 0), - z0 = bound(Math.round(z + zoomDelta)), - k = Math.pow(2, z - z0 + 8), - origin = [(translate[0] - scale / 2) / k, (translate[1] - scale / 2) / k], - tiles = [], - cols = d3.range(Math.max(0, Math.floor(-origin[0])), Math.max(0, Math.ceil(size[0] / k - origin[0]))), - rows = d3.range(Math.max(0, Math.floor(-origin[1])), Math.max(0, Math.ceil(size[1] / k - origin[1]))); - - rows.forEach(function(y) { - cols.forEach(function(x) { - tiles.push([x, y, z0]); - }); - }); + function transition_text(value) { + return this.tween("text", typeof value === "function" + ? textFunction$1(tweenValue(this, "text", value)) + : textConstant$1(value == null ? "" : value + "")); + } - tiles.translate = origin; - tiles.scale = k; + function transition_transition() { + var name = this._name, + id0 = this._id, + id1 = newId(); + + for (var groups = this._groups, m = groups.length, j = 0; j < m; ++j) { + for (var group = groups[j], n = group.length, node, i = 0; i < n; ++i) { + if (node = group[i]) { + var inherit = get$1(node, id0); + schedule(node, name, id1, i, group, { + time: inherit.time + inherit.delay + inherit.duration, + delay: 0, + duration: inherit.duration, + ease: inherit.ease + }); + } + } + } - return tiles; + return new Transition(groups, this._parents, name, id1); } - tile.scaleExtent = function(_) { - if (!arguments.length) return scaleExtent; - scaleExtent = _; - return tile; - }; + var id = 0; - tile.size = function(_) { - if (!arguments.length) return size; - size = _; - return tile; - }; + function Transition(groups, parents, name, id) { + this._groups = groups; + this._parents = parents; + this._name = name; + this._id = id; + } - tile.scale = function(_) { - if (!arguments.length) return scale; - scale = _; - return tile; - }; + function transition(name) { + return selection().transition(name); + } - tile.translate = function(_) { - if (!arguments.length) return translate; - translate = _; - return tile; - }; + function newId() { + return ++id; + } - tile.zoomDelta = function(_) { - if (!arguments.length) return zoomDelta; - zoomDelta = +_; - return tile; + var selection_prototype = selection.prototype; + + Transition.prototype = transition.prototype = { + constructor: Transition, + select: transition_select, + selectAll: transition_selectAll, + filter: transition_filter, + merge: transition_merge, + selection: transition_selection, + transition: transition_transition, + call: selection_prototype.call, + nodes: selection_prototype.nodes, + node: selection_prototype.node, + size: selection_prototype.size, + empty: selection_prototype.empty, + each: selection_prototype.each, + on: transition_on, + attr: transition_attr, + attrTween: transition_attrTween, + style: transition_style, + styleTween: transition_styleTween, + text: transition_text, + remove: transition_remove, + tween: transition_tween, + delay: transition_delay, + duration: transition_duration, + ease: transition_ease }; - return tile; -}; -d3.jsonp = function (url, callback) { - function rand() { - var chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz', - c = '', i = -1; - while (++i < 15) c += chars.charAt(Math.floor(Math.random() * 52)); - return c; + function linear$1(t) { + return +t; } - function create(url) { - var e = url.match(/callback=d3.jsonp.(\w+)/), - c = e ? e[1] : rand(); - d3.jsonp[c] = function(data) { - callback(data); - delete d3.jsonp[c]; - script.remove(); - }; - return 'd3.jsonp.' + c; - } - - var cb = create(url), - script = d3.select('head') - .append('script') - .attr('type', 'text/javascript') - .attr('src', url.replace(/(\{|%7B)callback(\}|%7D)/, cb)); -}; -/* - * This code is licensed under the MIT license. - * - * Copyright © 2013, iD authors. - * - * Portions copyright © 2011, Keith Cirkel - * See https://github.com/keithamus/jwerty - * - */ -d3.keybinding = function(namespace) { - var bindings = []; - - function matches(binding, event) { - for (var p in binding.event) { - if (event[p] != binding.event[p]) - return false; - } - - return (!binding.capture) === (event.eventPhase !== Event.CAPTURING_PHASE); - } - - function capture() { - for (var i = 0; i < bindings.length; i++) { - var binding = bindings[i]; - if (matches(binding, d3.event)) { - binding.callback(); - } - } - } + function quadIn(t) { + return t * t; + } - function bubble() { - var tagName = d3.select(d3.event.target).node().tagName; - if (tagName == 'INPUT' || tagName == 'SELECT' || tagName == 'TEXTAREA') { - return; - } - capture(); - } + function quadOut(t) { + return t * (2 - t); + } - function keybinding(selection) { - selection = selection || d3.select(document); - selection.on('keydown.capture' + namespace, capture, true); - selection.on('keydown.bubble' + namespace, bubble, false); - return keybinding; - } + function quadInOut(t) { + return ((t *= 2) <= 1 ? t * t : --t * (2 - t) + 1) / 2; + } - keybinding.off = function(selection) { - selection = selection || d3.select(document); - selection.on('keydown.capture' + namespace, null); - selection.on('keydown.bubble' + namespace, null); - return keybinding; - }; + function cubicIn(t) { + return t * t * t; + } - keybinding.on = function(code, callback, capture) { - var binding = { - event: { - keyCode: 0, - shiftKey: false, - ctrlKey: false, - altKey: false, - metaKey: false - }, - capture: capture, - callback: callback - }; + function cubicOut(t) { + return --t * t * t + 1; + } - code = code.toLowerCase().match(/(?:(?:[^+⇧⌃⌥⌘])+|[⇧⌃⌥⌘]|\+\+|^\+$)/g); + function cubicInOut(t) { + return ((t *= 2) <= 1 ? t * t * t : (t -= 2) * t * t + 2) / 2; + } - for (var i = 0; i < code.length; i++) { - // Normalise matching errors - if (code[i] === '++') code[i] = '+'; + var exponent = 3; - if (code[i] in d3.keybinding.modifierCodes) { - binding.event[d3.keybinding.modifierProperties[d3.keybinding.modifierCodes[code[i]]]] = true; - } else if (code[i] in d3.keybinding.keyCodes) { - binding.event.keyCode = d3.keybinding.keyCodes[code[i]]; - } - } + var polyIn = (function custom(e) { + e = +e; - bindings.push(binding); + function polyIn(t) { + return Math.pow(t, e); + } - return keybinding; - }; + polyIn.exponent = custom; - return keybinding; -}; + return polyIn; + })(exponent); -(function () { - d3.keybinding.modifierCodes = { - // Shift key, ⇧ - '⇧': 16, shift: 16, - // CTRL key, on Mac: ⌃ - '⌃': 17, ctrl: 17, - // ALT key, on Mac: ⌥ (Alt) - '⌥': 18, alt: 18, option: 18, - // META, on Mac: ⌘ (CMD), on Windows (Win), on Linux (Super) - '⌘': 91, meta: 91, cmd: 91, 'super': 91, win: 91 - }; + var polyOut = (function custom(e) { + e = +e; - d3.keybinding.modifierProperties = { - 16: 'shiftKey', - 17: 'ctrlKey', - 18: 'altKey', - 91: 'metaKey' - }; + function polyOut(t) { + return 1 - Math.pow(1 - t, e); + } - d3.keybinding.keyCodes = { - // Backspace key, on Mac: ⌫ (Backspace) - '⌫': 8, backspace: 8, - // Tab Key, on Mac: ⇥ (Tab), on Windows ⇥⇥ - '⇥': 9, '⇆': 9, tab: 9, - // Return key, ↩ - '↩': 13, 'return': 13, enter: 13, '⌅': 13, - // Pause/Break key - 'pause': 19, 'pause-break': 19, - // Caps Lock key, ⇪ - '⇪': 20, caps: 20, 'caps-lock': 20, - // Escape key, on Mac: ⎋, on Windows: Esc - '⎋': 27, escape: 27, esc: 27, - // Space key - space: 32, - // Page-Up key, or pgup, on Mac: ↖ - '↖': 33, pgup: 33, 'page-up': 33, - // Page-Down key, or pgdown, on Mac: ↘ - '↘': 34, pgdown: 34, 'page-down': 34, - // END key, on Mac: ⇟ - '⇟': 35, end: 35, - // HOME key, on Mac: ⇞ - '⇞': 36, home: 36, - // Insert key, or ins - ins: 45, insert: 45, - // Delete key, on Mac: ⌦ (Delete) - '⌦': 46, del: 46, 'delete': 46, - // Left Arrow Key, or ← - '←': 37, left: 37, 'arrow-left': 37, - // Up Arrow Key, or ↑ - '↑': 38, up: 38, 'arrow-up': 38, - // Right Arrow Key, or → - '→': 39, right: 39, 'arrow-right': 39, - // Up Arrow Key, or ↓ - '↓': 40, down: 40, 'arrow-down': 40, - // odities, printing characters that come out wrong: - // Num-Multiply, or * - '*': 106, star: 106, asterisk: 106, multiply: 106, - // Num-Plus or + - '+': 107, 'plus': 107, - // Num-Subtract, or - - '-': 109, subtract: 109, - // Semicolon - ';': 186, semicolon:186, - // = or equals - '=': 187, 'equals': 187, - // Comma, or , - ',': 188, comma: 188, - 'dash': 189, //??? - // Period, or ., or full-stop - '.': 190, period: 190, 'full-stop': 190, - // Slash, or /, or forward-slash - '/': 191, slash: 191, 'forward-slash': 191, - // Tick, or `, or back-quote - '`': 192, tick: 192, 'back-quote': 192, - // Open bracket, or [ - '[': 219, 'open-bracket': 219, - // Back slash, or \ - '\\': 220, 'back-slash': 220, - // Close backet, or ] - ']': 221, 'close-bracket': 221, - // Apostrophe, or Quote, or ' - '\'': 222, quote: 222, apostrophe: 222 - }; + polyOut.exponent = custom; - // NUMPAD 0-9 - var i = 95, n = 0; - while (++i < 106) { - d3.keybinding.keyCodes['num-' + n] = i; - ++n; - } + return polyOut; + })(exponent); - // 0-9 - i = 47; n = 0; - while (++i < 58) { - d3.keybinding.keyCodes[n] = i; - ++n; - } + var polyInOut = (function custom(e) { + e = +e; - // F1-F25 - i = 111; n = 1; - while (++i < 136) { - d3.keybinding.keyCodes['f' + n] = i; - ++n; + function polyInOut(t) { + return ((t *= 2) <= 1 ? Math.pow(t, e) : 2 - Math.pow(2 - t, e)) / 2; } - // a-z - i = 64; - while (++i < 91) { - d3.keybinding.keyCodes[String.fromCharCode(i).toLowerCase()] = i; - } -})(); -d3.selection.prototype.one = function (type, listener, capture) { - var target = this, typeOnce = type + ".once"; - function one() { - target.on(typeOnce, null); - listener.apply(this, arguments); - } - target.on(typeOnce, one, capture); - return this; -}; -d3.selection.prototype.dimensions = function (dimensions) { - if (!arguments.length) { - var node = this.node(); - return [node.offsetWidth, - node.offsetHeight]; - } - return this.attr({width: dimensions[0], height: dimensions[1]}); -}; -d3.selection.prototype.trigger = function (type) { - this.each(function() { - var evt = document.createEvent('HTMLEvents'); - evt.initEvent(type, true, true); - this.dispatchEvent(evt); - }); -}; -d3.typeahead = function() { - var event = d3.dispatch('accept'), - autohighlight = false, - data; - - var typeahead = function(selection) { - var container, - hidden, - idx = autohighlight ? 0 : -1; - - function setup() { - var rect = selection.node().getBoundingClientRect(); - container = d3.select(document.body) - .append('div').attr('class', 'typeahead') - .style({ - position: 'absolute', - left: rect.left + 'px', - top: rect.bottom + 'px' - }); - selection - .on('keyup.typeahead', key); - hidden = false; - } + polyInOut.exponent = custom; - function hide() { - container.remove(); - idx = autohighlight ? 0 : -1; - hidden = true; - } + return polyInOut; + })(exponent); - function slowHide() { - if (autohighlight) { - if (container.select('a.selected').node()) { - select(container.select('a.selected').datum()); - event.accept(); - } - } - window.setTimeout(hide, 150); - } + var pi = Math.PI, + halfPi = pi / 2; - selection - .on('focus.typeahead', setup) - .on('blur.typeahead', slowHide); - - function key() { - var len = container.selectAll('a').data().length; - if (d3.event.keyCode === 40) { - idx = Math.min(idx + 1, len - 1); - return highlight(); - } else if (d3.event.keyCode === 38) { - idx = Math.max(idx - 1, 0); - return highlight(); - } else if (d3.event.keyCode === 13) { - if (container.select('a.selected').node()) { - select(container.select('a.selected').datum()); - } - event.accept(); - hide(); - } else { - update(); - } - } + function sinIn(t) { + return 1 - Math.cos(t * halfPi); + } - function highlight() { - container - .selectAll('a') - .classed('selected', function(d, i) { return i == idx; }); - } + function sinOut(t) { + return Math.sin(t * halfPi); + } - function update() { - if (hidden) setup(); + function sinInOut(t) { + return (1 - Math.cos(pi * t)) / 2; + } - data(selection, function(data) { - container.style('display', function() { - return data.length ? 'block' : 'none'; - }); + function expIn(t) { + return Math.pow(2, 10 * t - 10); + } - var options = container - .selectAll('a') - .data(data, function(d) { return d.value; }); + function expOut(t) { + return 1 - Math.pow(2, -10 * t); + } - options.enter() - .append('a') - .text(function(d) { return d.value; }) - .attr('title', function(d) { return d.title; }) - .on('click', select); + function expInOut(t) { + return ((t *= 2) <= 1 ? Math.pow(2, 10 * t - 10) : 2 - Math.pow(2, 10 - 10 * t)) / 2; + } - options.exit().remove(); + function circleIn(t) { + return 1 - Math.sqrt(1 - t * t); + } - options - .classed('selected', function(d, i) { return i == idx; }); - }); - } + function circleOut(t) { + return Math.sqrt(1 - --t * t); + } - function select(d) { - selection - .property('value', d.value) - .trigger('change'); - } + function circleInOut(t) { + return ((t *= 2) <= 1 ? 1 - Math.sqrt(1 - t * t) : Math.sqrt(1 - (t -= 2) * t) + 1) / 2; + } - }; + var b1 = 4 / 11, + b2 = 6 / 11, + b3 = 8 / 11, + b4 = 3 / 4, + b5 = 9 / 11, + b6 = 10 / 11, + b7 = 15 / 16, + b8 = 21 / 22, + b9 = 63 / 64, + b0 = 1 / b1 / b1; + + function bounceIn(t) { + return 1 - bounceOut(1 - t); + } - typeahead.data = function(_) { - if (!arguments.length) return data; - data = _; - return typeahead; - }; + function bounceOut(t) { + return (t = +t) < b1 ? b0 * t * t : t < b3 ? b0 * (t -= b2) * t + b4 : t < b6 ? b0 * (t -= b5) * t + b7 : b0 * (t -= b8) * t + b9; + } - typeahead.autohighlight = function(_) { - if (!arguments.length) return autohighlight; - autohighlight = _; - return typeahead; - }; + function bounceInOut(t) { + return ((t *= 2) <= 1 ? 1 - bounceOut(1 - t) : bounceOut(t - 1) + 1) / 2; + } - return d3.rebind(typeahead, event, 'on'); -}; -// Tooltips and svg mask used to highlight certain features -d3.curtain = function() { - - var event = d3.dispatch(), - surface, - tooltip, - darkness; - - function curtain(selection) { - - surface = selection.append('svg') - .attr('id', 'curtain') - .style({ - 'z-index': 1000, - 'pointer-events': 'none', - 'position': 'absolute', - 'top': 0, - 'left': 0 - }); + var overshoot = 1.70158; - darkness = surface.append('path') - .attr({ - x: 0, - y: 0, - 'class': 'curtain-darkness' - }); + var backIn = (function custom(s) { + s = +s; - d3.select(window).on('resize.curtain', resize); + function backIn(t) { + return t * t * ((s + 1) * t - s); + } - tooltip = selection.append('div') - .attr('class', 'tooltip') - .style('z-index', 1002); + backIn.overshoot = custom; - tooltip.append('div').attr('class', 'tooltip-arrow'); - tooltip.append('div').attr('class', 'tooltip-inner'); + return backIn; + })(overshoot); - resize(); + var backOut = (function custom(s) { + s = +s; - function resize() { - surface.attr({ - width: window.innerWidth, - height: window.innerHeight - }); - curtain.cut(darkness.datum()); - } + function backOut(t) { + return --t * t * ((s + 1) * t + s) + 1; } - curtain.reveal = function(box, text, tooltipclass, duration) { - if (typeof box === 'string') box = d3.select(box).node(); - if (box.getBoundingClientRect) box = box.getBoundingClientRect(); - - curtain.cut(box, duration); + backOut.overshoot = custom; - if (text) { - // pseudo markdown bold text hack - var parts = text.split('**'); - var html = parts[0] ? '' + parts[0] + '' : ''; - if (parts[1]) html += '' + parts[1] + ''; + return backOut; + })(overshoot); - var dimensions = tooltip.classed('in', true) - .select('.tooltip-inner') - .html(html) - .dimensions(); + var backInOut = (function custom(s) { + s = +s; - var pos; + function backInOut(t) { + return ((t *= 2) < 1 ? t * t * ((s + 1) * t - s) : (t -= 2) * t * ((s + 1) * t + s) + 2) / 2; + } - var w = window.innerWidth, - h = window.innerHeight; + backInOut.overshoot = custom; - if (box.top + box.height < Math.min(100, box.width + box.left)) { - side = 'bottom'; - pos = [box.left + box.width / 2 - dimensions[0]/ 2, box.top + box.height]; + return backInOut; + })(overshoot); - } else if (box.left + box.width + 300 < window.innerWidth) { - side = 'right'; - pos = [box.left + box.width, box.top + box.height / 2 - dimensions[1] / 2]; + var tau = 2 * Math.PI, + amplitude = 1, + period = 0.3; - } else if (box.left > 300) { - side = 'left'; - pos = [box.left - 200, box.top + box.height / 2 - dimensions[1] / 2]; - } else { - side = 'bottom'; - pos = [box.left, box.top + box.height]; - } + var elasticIn = (function custom(a, p) { + var s = Math.asin(1 / (a = Math.max(1, a))) * (p /= tau); - pos = [ - Math.min(Math.max(10, pos[0]), w - dimensions[0] - 10), - Math.min(Math.max(10, pos[1]), h - dimensions[1] - 10) - ]; + function elasticIn(t) { + return a * Math.pow(2, 10 * --t) * Math.sin((s - t) / p); + } + elasticIn.amplitude = function(a) { return custom(a, p * tau); }; + elasticIn.period = function(p) { return custom(a, p); }; - if (duration !== 0 || !tooltip.classed(side)) tooltip.call(iD.ui.Toggle(true)); + return elasticIn; + })(amplitude, period); - tooltip - .style('top', pos[1] + 'px') - .style('left', pos[0] + 'px') - .attr('class', 'curtain-tooltip tooltip in ' + side + ' ' + tooltipclass) - .select('.tooltip-inner') - .html(html); + var elasticOut = (function custom(a, p) { + var s = Math.asin(1 / (a = Math.max(1, a))) * (p /= tau); - } else { - tooltip.call(iD.ui.Toggle(false)); - } - }; + function elasticOut(t) { + return 1 - a * Math.pow(2, -10 * (t = +t)) * Math.sin((t + s) / p); + } - curtain.cut = function(datum, duration) { - darkness.datum(datum); + elasticOut.amplitude = function(a) { return custom(a, p * tau); }; + elasticOut.period = function(p) { return custom(a, p); }; - (duration === 0 ? darkness : darkness.transition().duration(duration || 600)) - .attr('d', function(d) { - var string = "M 0,0 L 0," + window.innerHeight + " L " + - window.innerWidth + "," + window.innerHeight + "L" + - window.innerWidth + ",0 Z"; + return elasticOut; + })(amplitude, period); - if (!d) return string; - return string + 'M' + - d.left + ',' + d.top + 'L' + - d.left + ',' + (d.top + d.height) + 'L' + - (d.left + d.width) + ',' + (d.top + d.height) + 'L' + - (d.left + d.width) + ',' + (d.top) + 'Z'; + var elasticInOut = (function custom(a, p) { + var s = Math.asin(1 / (a = Math.max(1, a))) * (p /= tau); - }); - }; + function elasticInOut(t) { + return ((t = t * 2 - 1) < 0 + ? a * Math.pow(2, 10 * t) * Math.sin((s - t) / p) + : 2 - a * Math.pow(2, -10 * t) * Math.sin((s + t) / p)) / 2; + } - curtain.remove = function() { - surface.remove(); - tooltip.remove(); - }; + elasticInOut.amplitude = function(a) { return custom(a, p * tau); }; + elasticInOut.period = function(p) { return custom(a, p); }; - return d3.rebind(curtain, event, 'on'); -}; -// Like selection.property('value', ...), but avoids no-op value sets, -// which can result in layout/repaint thrashing in some situations. -d3.selection.prototype.value = function(value) { - function d3_selection_value(value) { - function valueNull() { - delete this.value; - } + return elasticInOut; + })(amplitude, period); - function valueConstant() { - if (this.value !== value) this.value = value; - } + var defaultTiming = { + time: null, // Set on use. + delay: 0, + duration: 250, + ease: cubicInOut + }; - function valueFunction() { - var x = value.apply(this, arguments); - if (x == null) delete this.value; - else if (this.value !== x) this.value = x; + function inherit(node, id) { + var timing; + while (!(timing = node.__transition) || !(timing = timing[id])) { + if (!(node = node.parentNode)) { + return defaultTiming.time = now(), defaultTiming; } - - return value == null - ? valueNull : (typeof value === "function" - ? valueFunction : valueConstant); } - - if (!arguments.length) return this.property('value'); - return this.each(d3_selection_value(value)); -}; -var JXON = new (function () { - var - sValueProp = "keyValue", sAttributesProp = "keyAttributes", sAttrPref = "@", /* you can customize these values */ - aCache = [], rIsNull = /^\s*$/, rIsBool = /^(?:true|false)$/i; - - function parseText (sValue) { - if (rIsNull.test(sValue)) { return null; } - if (rIsBool.test(sValue)) { return sValue.toLowerCase() === "true"; } - if (isFinite(sValue)) { return parseFloat(sValue); } - if (isFinite(Date.parse(sValue))) { return new Date(sValue); } - return sValue; - } - - function EmptyTree () { } - EmptyTree.prototype.toString = function () { return "null"; }; - EmptyTree.prototype.valueOf = function () { return null; }; - - function objectify (vValue) { - return vValue === null ? new EmptyTree() : vValue instanceof Object ? vValue : new vValue.constructor(vValue); + return timing; } - function createObjTree (oParentNode, nVerb, bFreeze, bNesteAttr) { - var - nLevelStart = aCache.length, bChildren = oParentNode.hasChildNodes(), - bAttributes = oParentNode.hasAttributes(), bHighVerb = Boolean(nVerb & 2); + function selection_transition(name) { + var id, + timing; - var - sProp, vContent, nLength = 0, sCollectedTxt = "", - vResult = bHighVerb ? {} : /* put here the default value for empty nodes: */ true; + if (name instanceof Transition) { + id = name._id, name = name._name; + } else { + id = newId(), (timing = defaultTiming).time = now(), name = name == null ? null : name + ""; + } - if (bChildren) { - for (var oNode, nItem = 0; nItem < oParentNode.childNodes.length; nItem++) { - oNode = oParentNode.childNodes.item(nItem); - if (oNode.nodeType === 4) { sCollectedTxt += oNode.nodeValue; } /* nodeType is "CDATASection" (4) */ - else if (oNode.nodeType === 3) { sCollectedTxt += oNode.nodeValue.trim(); } /* nodeType is "Text" (3) */ - else if (oNode.nodeType === 1 && !oNode.prefix) { aCache.push(oNode); } /* nodeType is "Element" (1) */ + for (var groups = this._groups, m = groups.length, j = 0; j < m; ++j) { + for (var group = groups[j], n = group.length, node, i = 0; i < n; ++i) { + if (node = group[i]) { + schedule(node, name, id, i, group, timing || inherit(node, id)); + } } } - var nLevelEnd = aCache.length, vBuiltVal = parseText(sCollectedTxt); - - if (!bHighVerb && (bChildren || bAttributes)) { vResult = nVerb === 0 ? objectify(vBuiltVal) : {}; } + return new Transition(groups, this._parents, name, id); + } - for (var nElId = nLevelStart; nElId < nLevelEnd; nElId++) { - sProp = aCache[nElId].nodeName.toLowerCase(); - vContent = createObjTree(aCache[nElId], nVerb, bFreeze, bNesteAttr); - if (vResult.hasOwnProperty(sProp)) { - if (vResult[sProp].constructor !== Array) { vResult[sProp] = [vResult[sProp]]; } - vResult[sProp].push(vContent); - } else { - vResult[sProp] = vContent; - nLength++; - } - } + selection.prototype.interrupt = selection_interrupt; + selection.prototype.transition = selection_transition; - if (bAttributes) { - var - nAttrLen = oParentNode.attributes.length, - sAPrefix = bNesteAttr ? "" : sAttrPref, oAttrParent = bNesteAttr ? {} : vResult; + var root$1 = [null]; - for (var oAttrib, nAttrib = 0; nAttrib < nAttrLen; nLength++, nAttrib++) { - oAttrib = oParentNode.attributes.item(nAttrib); - oAttrParent[sAPrefix + oAttrib.name.toLowerCase()] = parseText(oAttrib.value.trim()); - } + function active(node, name) { + var schedules = node.__transition, + schedule$$1, + i; - if (bNesteAttr) { - if (bFreeze) { Object.freeze(oAttrParent); } - vResult[sAttributesProp] = oAttrParent; - nLength -= nAttrLen - 1; + if (schedules) { + name = name == null ? null : name + ""; + for (i in schedules) { + if ((schedule$$1 = schedules[i]).state > SCHEDULED && schedule$$1.name === name) { + return new Transition([[node]], root$1, name, +i); + } } } - if (nVerb === 3 || (nVerb === 2 || nVerb === 1 && nLength > 0) && sCollectedTxt) { - vResult[sValueProp] = vBuiltVal; - } else if (!bHighVerb && nLength === 0 && sCollectedTxt) { - vResult = vBuiltVal; - } + return null; + } - if (bFreeze && (bHighVerb || nLength > 0)) { Object.freeze(vResult); } + function constant$4(x) { + return function() { + return x; + }; + } - aCache.length = nLevelStart; + function BrushEvent(target, type, selection) { + this.target = target; + this.type = type; + this.selection = selection; + } - return vResult; + function nopropagation$1() { + event.stopImmediatePropagation(); } - function loadObjTree (oXMLDoc, oParentEl, oParentObj) { - var vValue, oChild; + function noevent$1() { + event.preventDefault(); + event.stopImmediatePropagation(); + } - if (oParentObj instanceof String || oParentObj instanceof Number || oParentObj instanceof Boolean) { - oParentEl.appendChild(oXMLDoc.createTextNode(oParentObj.toString())); /* verbosity level is 0 */ - } else if (oParentObj.constructor === Date) { - oParentEl.appendChild(oXMLDoc.createTextNode(oParentObj.toGMTString())); - } + var MODE_DRAG = {name: "drag"}, + MODE_SPACE = {name: "space"}, + MODE_HANDLE = {name: "handle"}, + MODE_CENTER = {name: "center"}; - for (var sName in oParentObj) { - vValue = oParentObj[sName]; - if (isFinite(sName) || vValue instanceof Function) { continue; } /* verbosity level is 0 */ - if (sName === sValueProp) { - if (vValue !== null && vValue !== true) { oParentEl.appendChild(oXMLDoc.createTextNode(vValue.constructor === Date ? vValue.toGMTString() : String(vValue))); } - } else if (sName === sAttributesProp) { /* verbosity level is 3 */ - for (var sAttrib in vValue) { oParentEl.setAttribute(sAttrib, vValue[sAttrib]); } - } else if (sName.charAt(0) === sAttrPref) { - oParentEl.setAttribute(sName.slice(1), vValue); - } else if (vValue.constructor === Array) { - for (var nItem = 0; nItem < vValue.length; nItem++) { - oChild = oXMLDoc.createElement(sName); - loadObjTree(oXMLDoc, oChild, vValue[nItem]); - oParentEl.appendChild(oChild); - } - } else { - oChild = oXMLDoc.createElement(sName); - if (vValue instanceof Object) { - loadObjTree(oXMLDoc, oChild, vValue); - } else if (vValue !== null && vValue !== true) { - oChild.appendChild(oXMLDoc.createTextNode(vValue.toString())); - } - oParentEl.appendChild(oChild); - } - } - } + var X = { + name: "x", + handles: ["e", "w"].map(type), + input: function(x, e) { return x && [[x[0], e[0][1]], [x[1], e[1][1]]]; }, + output: function(xy) { return xy && [xy[0][0], xy[1][0]]; } + }; - this.build = function (oXMLParent, nVerbosity /* optional */, bFreeze /* optional */, bNesteAttributes /* optional */) { - var _nVerb = arguments.length > 1 && typeof nVerbosity === "number" ? nVerbosity & 3 : /* put here the default verbosity level: */ 1; - return createObjTree(oXMLParent, _nVerb, bFreeze || false, arguments.length > 3 ? bNesteAttributes : _nVerb === 3); + var Y = { + name: "y", + handles: ["n", "s"].map(type), + input: function(y, e) { return y && [[e[0][0], y[0]], [e[1][0], y[1]]]; }, + output: function(xy) { return xy && [xy[0][1], xy[1][1]]; } }; - this.unbuild = function (oObjTree) { - var oNewDoc = document.implementation.createDocument("", "", null); - loadObjTree(oNewDoc, oNewDoc, oObjTree); - return oNewDoc; + var XY = { + name: "xy", + handles: ["n", "e", "s", "w", "nw", "ne", "se", "sw"].map(type), + input: function(xy) { return xy; }, + output: function(xy) { return xy; } }; - this.stringify = function (oObjTree) { - return (new XMLSerializer()).serializeToString(JXON.unbuild(oObjTree)); + var cursors = { + overlay: "crosshair", + selection: "move", + n: "ns-resize", + e: "ew-resize", + s: "ns-resize", + w: "ew-resize", + nw: "nwse-resize", + ne: "nesw-resize", + se: "nwse-resize", + sw: "nesw-resize" }; -})(); -// var myObject = JXON.build(doc); -// we got our javascript object! try: alert(JSON.stringify(myObject)); -// var newDoc = JXON.unbuild(myObject); -// we got our Document instance! try: alert((new XMLSerializer()).serializeToString(newDoc)); -/*! - * Lo-Dash 1.0.0-rc.3 - * (c) 2012 John-David Dalton - * Based on Underscore.js 1.4.3 - * (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc. - * Available under MIT license - */ -;(function(window, undefined) { + var flipX = { + e: "w", + w: "e", + nw: "ne", + ne: "nw", + se: "sw", + sw: "se" + }; - /** Detect free variable `exports` */ - var freeExports = typeof exports == 'object' && exports; + var flipY = { + n: "s", + s: "n", + nw: "sw", + ne: "se", + se: "ne", + sw: "nw" + }; - /** Detect free variable `global` and use it as `window` */ - var freeGlobal = typeof global == 'object' && global; - if (freeGlobal.global === freeGlobal) { - window = freeGlobal; - } + var signsX = { + overlay: +1, + selection: +1, + n: null, + e: +1, + s: null, + w: -1, + nw: -1, + ne: +1, + se: +1, + sw: -1 + }; - /** Used for array and object method references */ - var arrayRef = [], - // avoid a Closure Compiler bug by creatively creating an object - objectRef = new function(){}; + var signsY = { + overlay: +1, + selection: +1, + n: -1, + e: null, + s: +1, + w: null, + nw: -1, + ne: -1, + se: +1, + sw: +1 + }; - /** Used to generate unique IDs */ - var idCounter = 0; + function type(t) { + return {type: t}; + } - /** Used internally to indicate various things */ - var indicatorObject = objectRef; + // Ignore right-click, since that should open the context menu. + function defaultFilter$1() { + return !event.button; + } - /** Used by `cachedContains` as the default size when optimizations are enabled for large arrays */ - var largeArraySize = 30; + function defaultExtent() { + var svg = this.ownerSVGElement || this; + return [[0, 0], [svg.width.baseVal.value, svg.height.baseVal.value]]; + } - /** Used to restore the original `_` reference in `noConflict` */ - var oldDash = window._; + // Like d3.local, but with the name “__brush” rather than auto-generated. + function local$1(node) { + while (!node.__brush) if (!(node = node.parentNode)) return; + return node.__brush; + } - /** Used to detect template delimiter values that require a with-statement */ - var reComplexDelimiter = /[-?+=!~*%&^<>|{(\/]|\[\D|\b(?:delete|in|instanceof|new|typeof|void)\b/; + function empty$1(extent) { + return extent[0][0] === extent[1][0] + || extent[0][1] === extent[1][1]; + } - /** Used to match HTML entities */ - var reEscapedHtml = /&(?:amp|lt|gt|quot|#x27);/g; + function brushSelection(node) { + var state = node.__brush; + return state ? state.dim.output(state.selection) : null; + } - /** Used to match empty string literals in compiled template source */ - var reEmptyStringLeading = /\b__p \+= '';/g, - reEmptyStringMiddle = /\b(__p \+=) '' \+/g, - reEmptyStringTrailing = /(__e\(.*?\)|\b__t\)) \+\n'';/g; + function brushX() { + return brush$1(X); + } - /** Used to match regexp flags from their coerced string values */ - var reFlags = /\w*$/; + function brushY() { + return brush$1(Y); + } - /** Used to insert the data object variable into compiled template source */ - var reInsertVariable = /(?:__e|__t = )\(\s*(?![\d\s"']|this\.)/g; + function brush() { + return brush$1(XY); + } - /** Used to detect if a method is native */ - var reNative = RegExp('^' + - (objectRef.valueOf + '') - .replace(/[.*+?^=!:${}()|[\]\/\\]/g, '\\$&') - .replace(/valueOf|for [^\]]+/g, '.+?') + '$' - ); + function brush$1(dim) { + var extent = defaultExtent, + filter = defaultFilter$1, + listeners = dispatch(brush, "start", "brush", "end"), + handleSize = 6, + touchending; + + function brush(group) { + var overlay = group + .property("__brush", initialize) + .selectAll(".overlay") + .data([type("overlay")]); + + overlay.enter().append("rect") + .attr("class", "overlay") + .attr("pointer-events", "all") + .attr("cursor", cursors.overlay) + .merge(overlay) + .each(function() { + var extent = local$1(this).extent; + select(this) + .attr("x", extent[0][0]) + .attr("y", extent[0][1]) + .attr("width", extent[1][0] - extent[0][0]) + .attr("height", extent[1][1] - extent[0][1]); + }); + + group.selectAll(".selection") + .data([type("selection")]) + .enter().append("rect") + .attr("class", "selection") + .attr("cursor", cursors.selection) + .attr("fill", "#777") + .attr("fill-opacity", 0.3) + .attr("stroke", "#fff") + .attr("shape-rendering", "crispEdges"); + + var handle = group.selectAll(".handle") + .data(dim.handles, function(d) { return d.type; }); + + handle.exit().remove(); + + handle.enter().append("rect") + .attr("class", function(d) { return "handle handle--" + d.type; }) + .attr("cursor", function(d) { return cursors[d.type]; }); + + group + .each(redraw) + .attr("fill", "none") + .attr("pointer-events", "all") + .style("-webkit-tap-highlight-color", "rgba(0,0,0,0)") + .on("mousedown.brush touchstart.brush", started); + } + + brush.move = function(group, selection$$1) { + if (group.selection) { + group + .on("start.brush", function() { emitter(this, arguments).beforestart().start(); }) + .on("interrupt.brush end.brush", function() { emitter(this, arguments).end(); }) + .tween("brush", function() { + var that = this, + state = that.__brush, + emit = emitter(that, arguments), + selection0 = state.selection, + selection1 = dim.input(typeof selection$$1 === "function" ? selection$$1.apply(this, arguments) : selection$$1, state.extent), + i = interpolate(selection0, selection1); + + function tween(t) { + state.selection = t === 1 && empty$1(selection1) ? null : i(t); + redraw.call(that); + emit.brush(); + } + + return selection0 && selection1 ? tween : tween(1); + }); + } else { + group + .each(function() { + var that = this, + args = arguments, + state = that.__brush, + selection1 = dim.input(typeof selection$$1 === "function" ? selection$$1.apply(that, args) : selection$$1, state.extent), + emit = emitter(that, args).beforestart(); + + interrupt(that); + state.selection = selection1 == null || empty$1(selection1) ? null : selection1; + redraw.call(that); + emit.start().brush().end(); + }); + } + }; - /** - * Used to match ES6 template delimiters - * http://people.mozilla.org/~jorendorff/es6-draft.html#sec-7.8.6 - */ - var reEsTemplate = /\$\{((?:(?=\\?)\\?[\s\S])*?)}/g; + function redraw() { + var group = select(this), + selection$$1 = local$1(this).selection; + + if (selection$$1) { + group.selectAll(".selection") + .style("display", null) + .attr("x", selection$$1[0][0]) + .attr("y", selection$$1[0][1]) + .attr("width", selection$$1[1][0] - selection$$1[0][0]) + .attr("height", selection$$1[1][1] - selection$$1[0][1]); + + group.selectAll(".handle") + .style("display", null) + .attr("x", function(d) { return d.type[d.type.length - 1] === "e" ? selection$$1[1][0] - handleSize / 2 : selection$$1[0][0] - handleSize / 2; }) + .attr("y", function(d) { return d.type[0] === "s" ? selection$$1[1][1] - handleSize / 2 : selection$$1[0][1] - handleSize / 2; }) + .attr("width", function(d) { return d.type === "n" || d.type === "s" ? selection$$1[1][0] - selection$$1[0][0] + handleSize : handleSize; }) + .attr("height", function(d) { return d.type === "e" || d.type === "w" ? selection$$1[1][1] - selection$$1[0][1] + handleSize : handleSize; }); + } - /** Used to match "interpolate" template delimiters */ - var reInterpolate = /<%=([\s\S]+?)%>/g; + else { + group.selectAll(".selection,.handle") + .style("display", "none") + .attr("x", null) + .attr("y", null) + .attr("width", null) + .attr("height", null); + } + } - /** Used to ensure capturing order of template delimiters */ - var reNoMatch = /($^)/; + function emitter(that, args) { + return that.__brush.emitter || new Emitter(that, args); + } - /** Used to match HTML characters */ - var reUnescapedHtml = /[&<>"']/g; + function Emitter(that, args) { + this.that = that; + this.args = args; + this.state = that.__brush; + this.active = 0; + } - /** Used to match unescaped characters in compiled string literals */ - var reUnescapedString = /['\n\r\t\u2028\u2029\\]/g; + Emitter.prototype = { + beforestart: function() { + if (++this.active === 1) this.state.emitter = this, this.starting = true; + return this; + }, + start: function() { + if (this.starting) this.starting = false, this.emit("start"); + return this; + }, + brush: function() { + this.emit("brush"); + return this; + }, + end: function() { + if (--this.active === 0) delete this.state.emitter, this.emit("end"); + return this; + }, + emit: function(type) { + customEvent(new BrushEvent(brush, type, dim.output(this.state.selection)), listeners.apply, listeners, [type, this.that, this.args]); + } + }; - /** Used to fix the JScript [[DontEnum]] bug */ - var shadowed = [ - 'constructor', 'hasOwnProperty', 'isPrototypeOf', 'propertyIsEnumerable', - 'toLocaleString', 'toString', 'valueOf' - ]; + function started() { + if (event.touches) { if (event.changedTouches.length < event.touches.length) return noevent$1(); } + else if (touchending) return; + if (!filter.apply(this, arguments)) return; + + var that = this, + type = event.target.__data__.type, + mode = (event.metaKey ? type = "overlay" : type) === "selection" ? MODE_DRAG : (event.altKey ? MODE_CENTER : MODE_HANDLE), + signX = dim === Y ? null : signsX[type], + signY = dim === X ? null : signsY[type], + state = local$1(that), + extent = state.extent, + selection$$1 = state.selection, + W = extent[0][0], w0, w1, + N = extent[0][1], n0, n1, + E = extent[1][0], e0, e1, + S = extent[1][1], s0, s1, + dx, + dy, + moving, + shifting = signX && signY && event.shiftKey, + lockX, + lockY, + point0 = mouse(that), + point$$1 = point0, + emit = emitter(that, arguments).beforestart(); + + if (type === "overlay") { + state.selection = selection$$1 = [ + [w0 = dim === Y ? W : point0[0], n0 = dim === X ? N : point0[1]], + [e0 = dim === Y ? E : w0, s0 = dim === X ? S : n0] + ]; + } else { + w0 = selection$$1[0][0]; + n0 = selection$$1[0][1]; + e0 = selection$$1[1][0]; + s0 = selection$$1[1][1]; + } - /** Used to make template sourceURLs easier to identify */ - var templateCounter = 0; - - /** Native method shortcuts */ - var ceil = Math.ceil, - concat = arrayRef.concat, - floor = Math.floor, - getPrototypeOf = reNative.test(getPrototypeOf = Object.getPrototypeOf) && getPrototypeOf, - hasOwnProperty = objectRef.hasOwnProperty, - push = arrayRef.push, - propertyIsEnumerable = objectRef.propertyIsEnumerable, - toString = objectRef.toString; - - /* Native method shortcuts for methods with the same name as other `lodash` methods */ - var nativeBind = reNative.test(nativeBind = slice.bind) && nativeBind, - nativeIsArray = reNative.test(nativeIsArray = Array.isArray) && nativeIsArray, - nativeIsFinite = window.isFinite, - nativeIsNaN = window.isNaN, - nativeKeys = reNative.test(nativeKeys = Object.keys) && nativeKeys, - nativeMax = Math.max, - nativeMin = Math.min, - nativeRandom = Math.random; - - /** `Object#toString` result shortcuts */ - var argsClass = '[object Arguments]', - arrayClass = '[object Array]', - boolClass = '[object Boolean]', - dateClass = '[object Date]', - funcClass = '[object Function]', - numberClass = '[object Number]', - objectClass = '[object Object]', - regexpClass = '[object RegExp]', - stringClass = '[object String]'; - - /** Detect various environments */ - var isIeOpera = !!window.attachEvent, - isV8 = nativeBind && !/\n|true/.test(nativeBind + isIeOpera); - - /* Detect if `Function#bind` exists and is inferred to be fast (all but V8) */ - var isBindFast = nativeBind && !isV8; - - /* Detect if `Object.keys` exists and is inferred to be fast (IE, Opera, V8) */ - var isKeysFast = nativeKeys && (isIeOpera || isV8); + w1 = w0; + n1 = n0; + e1 = e0; + s1 = s0; - /** - * Detect the JScript [[DontEnum]] bug: - * - * In IE < 9 an objects own properties, shadowing non-enumerable ones, are - * made non-enumerable as well. - */ - var hasDontEnumBug; + var group = select(that) + .attr("pointer-events", "none"); - /** Detect if own properties are iterated after inherited properties (IE < 9) */ - var iteratesOwnLast; + var overlay = group.selectAll(".overlay") + .attr("cursor", cursors[type]); - /** - * Detect if `Array#shift` and `Array#splice` augment array-like objects - * incorrectly: - * - * Firefox < 10, IE compatibility mode, and IE < 9 have buggy Array `shift()` - * and `splice()` functions that fail to remove the last element, `value[0]`, - * of array-like objects even though the `length` property is set to `0`. - * The `shift()` method is buggy in IE 8 compatibility mode, while `splice()` - * is buggy regardless of mode in IE < 9 and buggy in compatibility mode in IE 9. - */ - var hasObjectSpliceBug = (hasObjectSpliceBug = { '0': 1, 'length': 1 }, - arrayRef.splice.call(hasObjectSpliceBug, 0, 1), hasObjectSpliceBug[0]); + if (event.touches) { + group + .on("touchmove.brush", moved, true) + .on("touchend.brush touchcancel.brush", ended, true); + } else { + var view = select(event.view) + .on("keydown.brush", keydowned, true) + .on("keyup.brush", keyupped, true) + .on("mousemove.brush", moved, true) + .on("mouseup.brush", ended, true); - /** Detect if an `arguments` object's indexes are non-enumerable (IE < 9) */ - var nonEnumArgs = true; + nodrag(event.view); + } - (function() { - var props = []; - function ctor() { this.x = 1; } - ctor.prototype = { 'valueOf': 1, 'y': 1 }; - for (var prop in new ctor) { props.push(prop); } - for (prop in arguments) { nonEnumArgs = !prop; } + nopropagation$1(); + interrupt(that); + redraw.call(that); + emit.start(); - hasDontEnumBug = !/valueOf/.test(props); - iteratesOwnLast = props[0] != 'x'; - }(1)); + function moved() { + var point1 = mouse(that); + if (shifting && !lockX && !lockY) { + if (Math.abs(point1[0] - point$$1[0]) > Math.abs(point1[1] - point$$1[1])) lockY = true; + else lockX = true; + } + point$$1 = point1; + moving = true; + noevent$1(); + move(); + } - /** Detect if `arguments` objects are `Object` objects (all but Opera < 10.5) */ - var argsAreObjects = arguments.constructor == Object; + function move() { + var t; - /** Detect if `arguments` objects [[Class]] is unresolvable (Firefox < 4, IE < 9) */ - var noArgsClass = !isArguments(arguments); + dx = point$$1[0] - point0[0]; + dy = point$$1[1] - point0[1]; - /** - * Detect lack of support for accessing string characters by index: - * - * IE < 8 can't access characters by index and IE 8 can only access - * characters by index on string literals. - */ - var noCharByIndex = ('x'[0] + Object('x')[0]) != 'xx'; + switch (mode) { + case MODE_SPACE: + case MODE_DRAG: { + if (signX) dx = Math.max(W - w0, Math.min(E - e0, dx)), w1 = w0 + dx, e1 = e0 + dx; + if (signY) dy = Math.max(N - n0, Math.min(S - s0, dy)), n1 = n0 + dy, s1 = s0 + dy; + break; + } + case MODE_HANDLE: { + if (signX < 0) dx = Math.max(W - w0, Math.min(E - w0, dx)), w1 = w0 + dx, e1 = e0; + else if (signX > 0) dx = Math.max(W - e0, Math.min(E - e0, dx)), w1 = w0, e1 = e0 + dx; + if (signY < 0) dy = Math.max(N - n0, Math.min(S - n0, dy)), n1 = n0 + dy, s1 = s0; + else if (signY > 0) dy = Math.max(N - s0, Math.min(S - s0, dy)), n1 = n0, s1 = s0 + dy; + break; + } + case MODE_CENTER: { + if (signX) w1 = Math.max(W, Math.min(E, w0 - dx * signX)), e1 = Math.max(W, Math.min(E, e0 + dx * signX)); + if (signY) n1 = Math.max(N, Math.min(S, n0 - dy * signY)), s1 = Math.max(N, Math.min(S, s0 + dy * signY)); + break; + } + } - /** - * Detect if a node's [[Class]] is unresolvable (IE < 9) - * and that the JS engine won't error when attempting to coerce an object to - * a string without a `toString` property value of `typeof` "function". - */ - try { - var noNodeClass = ({ 'toString': 0 } + '', toString.call(document) == objectClass); - } catch(e) { } + if (e1 < w1) { + signX *= -1; + t = w0, w0 = e0, e0 = t; + t = w1, w1 = e1, e1 = t; + if (type in flipX) overlay.attr("cursor", cursors[type = flipX[type]]); + } - /** - * Detect if sourceURL syntax is usable without erroring: - * - * The JS engine embedded in Adobe products will throw a syntax error when - * it encounters a single line comment beginning with the `@` symbol. - * - * The JS engine in Narwhal will generate the function `function anonymous(){//}` - * and throw a syntax error. - * - * Avoid comments beginning `@` symbols in IE because they are part of its - * non-standard conditional compilation support. - * http://msdn.microsoft.com/en-us/library/121hztk3(v=vs.94).aspx - */ - try { - var useSourceURL = (Function('//@')(), !isIeOpera); - } catch(e) { } - - /** Used to identify object classifications that `_.clone` supports */ - var cloneableClasses = {}; - cloneableClasses[funcClass] = false; - cloneableClasses[argsClass] = cloneableClasses[arrayClass] = - cloneableClasses[boolClass] = cloneableClasses[dateClass] = - cloneableClasses[numberClass] = cloneableClasses[objectClass] = - cloneableClasses[regexpClass] = cloneableClasses[stringClass] = true; - - /** Used to lookup a built-in constructor by [[Class]] */ - var ctorByClass = {}; - ctorByClass[arrayClass] = Array; - ctorByClass[boolClass] = Boolean; - ctorByClass[dateClass] = Date; - ctorByClass[objectClass] = Object; - ctorByClass[numberClass] = Number; - ctorByClass[regexpClass] = RegExp; - ctorByClass[stringClass] = String; - - /** Used to determine if values are of the language type Object */ - var objectTypes = { - 'boolean': false, - 'function': true, - 'object': true, - 'number': false, - 'string': false, - 'undefined': false - }; + if (s1 < n1) { + signY *= -1; + t = n0, n0 = s0, s0 = t; + t = n1, n1 = s1, s1 = t; + if (type in flipY) overlay.attr("cursor", cursors[type = flipY[type]]); + } - /** Used to escape characters for inclusion in compiled string literals */ - var stringEscapes = { - '\\': '\\', - "'": "'", - '\n': 'n', - '\r': 'r', - '\t': 't', - '\u2028': 'u2028', - '\u2029': 'u2029' - }; + if (state.selection) selection$$1 = state.selection; // May be set by brush.move! + if (lockX) w1 = selection$$1[0][0], e1 = selection$$1[1][0]; + if (lockY) n1 = selection$$1[0][1], s1 = selection$$1[1][1]; + + if (selection$$1[0][0] !== w1 + || selection$$1[0][1] !== n1 + || selection$$1[1][0] !== e1 + || selection$$1[1][1] !== s1) { + state.selection = [[w1, n1], [e1, s1]]; + redraw.call(that); + emit.brush(); + } + } - /*--------------------------------------------------------------------------*/ + function ended() { + nopropagation$1(); + if (event.touches) { + if (event.touches.length) return; + if (touchending) clearTimeout(touchending); + touchending = setTimeout(function() { touchending = null; }, 500); // Ghost clicks are delayed! + group.on("touchmove.brush touchend.brush touchcancel.brush", null); + } else { + yesdrag(event.view, moving); + view.on("keydown.brush keyup.brush mousemove.brush mouseup.brush", null); + } + group.attr("pointer-events", "all"); + overlay.attr("cursor", cursors.overlay); + if (state.selection) selection$$1 = state.selection; // May be set by brush.move (on start)! + if (empty$1(selection$$1)) state.selection = null, redraw.call(that); + emit.end(); + } - /** - * Creates a `lodash` object, that wraps the given `value`, to enable - * method chaining. - * - * The chainable wrapper functions are: - * `after`, `assign`, `bind`, `bindAll`, `bindKey`, `chain`, `compact`, `compose`, - * `concat`, `countBy`, `debounce`, `defaults`, `defer`, `delay`, `difference`, - * `filter`, `flatten`, `forEach`, `forIn`, `forOwn`, `functions`, `groupBy`, - * `initial`, `intersection`, `invert`, `invoke`, `keys`, `map`, `max`, `memoize`, - * `merge`, `min`, `object`, `omit`, `once`, `pairs`, `partial`, `pick`, `pluck`, - * `push`, `range`, `reject`, `rest`, `reverse`, `shuffle`, `slice`, `sort`, - * `sortBy`, `splice`, `tap`, `throttle`, `times`, `toArray`, `union`, `uniq`, - * `unshift`, `values`, `where`, `without`, `wrap`, and `zip` - * - * The non-chainable wrapper functions are: - * `clone`, `cloneDeep`, `contains`, `escape`, `every`, `find`, `has`, `identity`, - * `indexOf`, `isArguments`, `isArray`, `isBoolean`, `isDate`, `isElement`, `isEmpty`, - * `isEqual`, `isFinite`, `isFunction`, `isNaN`, `isNull`, `isNumber`, `isObject`, - * `isPlainObject`, `isRegExp`, `isString`, `isUndefined`, `join`, `lastIndexOf`, - * `mixin`, `noConflict`, `pop`, `random`, `reduce`, `reduceRight`, `result`, - * `shift`, `size`, `some`, `sortedIndex`, `template`, `unescape`, and `uniqueId` - * - * The wrapper functions `first` and `last` return wrapped values when `n` is - * passed, otherwise they return unwrapped values. - * - * @name _ - * @constructor - * @category Chaining - * @param {Mixed} value The value to wrap in a `lodash` instance. - * @returns {Object} Returns a `lodash` instance. - */ - function lodash(value) { - // exit early if already wrapped, even if wrapped by a different `lodash` constructor - if (value && typeof value == 'object' && value.__wrapped__) { - return value; + function keydowned() { + switch (event.keyCode) { + case 16: { // SHIFT + shifting = signX && signY; + break; + } + case 18: { // ALT + if (mode === MODE_HANDLE) { + if (signX) e0 = e1 - dx * signX, w0 = w1 + dx * signX; + if (signY) s0 = s1 - dy * signY, n0 = n1 + dy * signY; + mode = MODE_CENTER; + move(); + } + break; + } + case 32: { // SPACE; takes priority over ALT + if (mode === MODE_HANDLE || mode === MODE_CENTER) { + if (signX < 0) e0 = e1 - dx; else if (signX > 0) w0 = w1 - dx; + if (signY < 0) s0 = s1 - dy; else if (signY > 0) n0 = n1 - dy; + mode = MODE_SPACE; + overlay.attr("cursor", cursors.selection); + move(); + } + break; + } + default: return; + } + noevent$1(); + } + + function keyupped() { + switch (event.keyCode) { + case 16: { // SHIFT + if (shifting) { + lockX = lockY = shifting = false; + move(); + } + break; + } + case 18: { // ALT + if (mode === MODE_CENTER) { + if (signX < 0) e0 = e1; else if (signX > 0) w0 = w1; + if (signY < 0) s0 = s1; else if (signY > 0) n0 = n1; + mode = MODE_HANDLE; + move(); + } + break; + } + case 32: { // SPACE + if (mode === MODE_SPACE) { + if (event.altKey) { + if (signX) e0 = e1 - dx * signX, w0 = w1 + dx * signX; + if (signY) s0 = s1 - dy * signY, n0 = n1 + dy * signY; + mode = MODE_CENTER; + } else { + if (signX < 0) e0 = e1; else if (signX > 0) w0 = w1; + if (signY < 0) s0 = s1; else if (signY > 0) n0 = n1; + mode = MODE_HANDLE; + } + overlay.attr("cursor", cursors[type]); + move(); + } + break; + } + default: return; + } + noevent$1(); + } } - // allow invoking `lodash` without the `new` operator - if (!(this instanceof lodash)) { - return new lodash(value); + + function initialize() { + var state = this.__brush || {selection: null}; + state.extent = extent.apply(this, arguments); + state.dim = dim; + return state; } - this.__wrapped__ = value; - } - /** - * By default, the template delimiters used by Lo-Dash are similar to those in - * embedded Ruby (ERB). Change the following template settings to use alternative - * delimiters. - * - * @static - * @memberOf _ - * @type Object - */ - lodash.templateSettings = { + brush.extent = function(_) { + return arguments.length ? (extent = typeof _ === "function" ? _ : constant$4([[+_[0][0], +_[0][1]], [+_[1][0], +_[1][1]]]), brush) : extent; + }; - /** - * Used to detect `data` property values to be HTML-escaped. - * - * @static - * @memberOf _.templateSettings - * @type RegExp - */ - 'escape': /<%-([\s\S]+?)%>/g, + brush.filter = function(_) { + return arguments.length ? (filter = typeof _ === "function" ? _ : constant$4(!!_), brush) : filter; + }; - /** - * Used to detect code to be evaluated. - * - * @static - * @memberOf _.templateSettings - * @type RegExp - */ - 'evaluate': /<%([\s\S]+?)%>/g, + brush.handleSize = function(_) { + return arguments.length ? (handleSize = +_, brush) : handleSize; + }; - /** - * Used to detect `data` property values to inject. - * - * @static - * @memberOf _.templateSettings - * @type RegExp - */ - 'interpolate': reInterpolate, + brush.on = function() { + var value = listeners.on.apply(listeners, arguments); + return value === listeners ? brush : value; + }; - /** - * Used to reference the data object in the template text. - * - * @static - * @memberOf _.templateSettings - * @type String - */ - 'variable': '' - }; + return brush; + } - /*--------------------------------------------------------------------------*/ + var cos = Math.cos; + var sin = Math.sin; + var pi$1 = Math.PI; + var halfPi$1 = pi$1 / 2; + var tau$1 = pi$1 * 2; + var max$1 = Math.max; + + function compareValue(compare) { + return function(a, b) { + return compare( + a.source.value + a.target.value, + b.source.value + b.target.value + ); + }; + } - /** - * The template used to create iterator functions. - * - * @private - * @param {Obect} data The data object used to populate the text. - * @returns {String} Returns the interpolated text. - */ - var iteratorTemplate = template( - // conditional strict mode - "<% if (obj.useStrict) { %>'use strict';\n<% } %>" + - - // the `iteratee` may be reassigned by the `top` snippet - 'var index, iteratee = <%= firstArg %>, ' + - // assign the `result` variable an initial value - 'result = <%= firstArg %>;\n' + - // exit early if the first argument is falsey - 'if (!<%= firstArg %>) return result;\n' + - // add code before the iteration branches - '<%= top %>;\n' + - - // array-like iteration: - '<% if (arrayLoop) { %>' + - 'var length = iteratee.length; index = -1;\n' + - "if (typeof length == 'number') {" + - - // add support for accessing string characters by index if needed - ' <% if (noCharByIndex) { %>\n' + - ' if (isString(iteratee)) {\n' + - " iteratee = iteratee.split('')\n" + - ' }' + - ' <% } %>\n' + - - // iterate over the array-like value - ' while (++index < length) {\n' + - ' <%= arrayLoop %>\n' + - ' }\n' + - '}\n' + - 'else {' + - - // object iteration: - // add support for iterating over `arguments` objects if needed - ' <% } else if (nonEnumArgs) { %>\n' + - ' var length = iteratee.length; index = -1;\n' + - ' if (length && isArguments(iteratee)) {\n' + - ' while (++index < length) {\n' + - " index += '';\n" + - ' <%= objectLoop %>\n' + - ' }\n' + - ' } else {' + - ' <% } %>' + - - // Firefox < 3.6, Opera > 9.50 - Opera < 11.60, and Safari < 5.1 - // (if the prototype or a property on the prototype has been set) - // incorrectly sets a function's `prototype` property [[Enumerable]] - // value to `true`. Because of this Lo-Dash standardizes on skipping - // the the `prototype` property of functions regardless of its - // [[Enumerable]] value. - ' <% if (!hasDontEnumBug) { %>\n' + - " var skipProto = typeof iteratee == 'function' && \n" + - " propertyIsEnumerable.call(iteratee, 'prototype');\n" + - ' <% } %>' + - - // iterate own properties using `Object.keys` if it's fast - ' <% if (isKeysFast && useHas) { %>\n' + - ' var ownIndex = -1,\n' + - ' ownProps = objectTypes[typeof iteratee] ? nativeKeys(iteratee) : [],\n' + - ' length = ownProps.length;\n\n' + - ' while (++ownIndex < length) {\n' + - ' index = ownProps[ownIndex];\n' + - " <% if (!hasDontEnumBug) { %>if (!(skipProto && index == 'prototype')) {\n <% } %>" + - ' <%= objectLoop %>\n' + - ' <% if (!hasDontEnumBug) { %>}\n<% } %>' + - ' }' + - - // else using a for-in loop - ' <% } else { %>\n' + - ' for (index in iteratee) {<%' + - ' if (!hasDontEnumBug || useHas) { %>\n if (<%' + - " if (!hasDontEnumBug) { %>!(skipProto && index == 'prototype')<% }" + - ' if (!hasDontEnumBug && useHas) { %> && <% }' + - ' if (useHas) { %>hasOwnProperty.call(iteratee, index)<% }' + - ' %>) {' + - ' <% } %>\n' + - ' <%= objectLoop %>;' + - ' <% if (!hasDontEnumBug || useHas) { %>\n }<% } %>\n' + - ' }' + - ' <% } %>' + - - // Because IE < 9 can't set the `[[Enumerable]]` attribute of an - // existing property and the `constructor` property of a prototype - // defaults to non-enumerable, Lo-Dash skips the `constructor` - // property when it infers it's iterating over a `prototype` object. - ' <% if (hasDontEnumBug) { %>\n\n' + - ' var ctor = iteratee.constructor;\n' + - ' <% for (var k = 0; k < 7; k++) { %>\n' + - " index = '<%= shadowed[k] %>';\n" + - ' if (<%' + - " if (shadowed[k] == 'constructor') {" + - ' %>!(ctor && ctor.prototype === iteratee) && <%' + - ' } %>hasOwnProperty.call(iteratee, index)) {\n' + - ' <%= objectLoop %>\n' + - ' }' + - ' <% } %>' + - ' <% } %>' + - ' <% if (arrayLoop || nonEnumArgs) { %>\n}<% } %>\n' + - - // add code to the bottom of the iteration function - '<%= bottom %>;\n' + - // finally, return the `result` - 'return result' - ); + function chord() { + var padAngle = 0, + sortGroups = null, + sortSubgroups = null, + sortChords = null; + + function chord(matrix) { + var n = matrix.length, + groupSums = [], + groupIndex = range(n), + subgroupIndex = [], + chords = [], + groups = chords.groups = new Array(n), + subgroups = new Array(n * n), + k, + x, + x0, + dx, + i, + j; + + // Compute the sum. + k = 0, i = -1; while (++i < n) { + x = 0, j = -1; while (++j < n) { + x += matrix[i][j]; + } + groupSums.push(x); + subgroupIndex.push(range(n)); + k += x; + } - /** Reusable iterator options for `assign` and `defaults` */ - var assignIteratorOptions = { - 'args': 'object, source, guard', - 'top': - "for (var argsIndex = 1, argsLength = typeof guard == 'number' ? 2 : arguments.length; argsIndex < argsLength; argsIndex++) {\n" + - ' if ((iteratee = arguments[argsIndex])) {', - 'objectLoop': 'result[index] = iteratee[index]', - 'bottom': ' }\n}' - }; + // Sort groups… + if (sortGroups) groupIndex.sort(function(a, b) { + return sortGroups(groupSums[a], groupSums[b]); + }); - /** - * Reusable iterator options shared by `each`, `forIn`, and `forOwn`. - */ - var eachIteratorOptions = { - 'args': 'collection, callback, thisArg', - 'top': "callback = callback && typeof thisArg == 'undefined' ? callback : createCallback(callback, thisArg)", - 'arrayLoop': 'if (callback(iteratee[index], index, collection) === false) return result', - 'objectLoop': 'if (callback(iteratee[index], index, collection) === false) return result' - }; + // Sort subgroups… + if (sortSubgroups) subgroupIndex.forEach(function(d, i) { + d.sort(function(a, b) { + return sortSubgroups(matrix[i][a], matrix[i][b]); + }); + }); - /** Reusable iterator options for `forIn` and `forOwn` */ - var forOwnIteratorOptions = { - 'arrayLoop': null - }; + // Convert the sum to scaling factor for [0, 2pi]. + // TODO Allow start and end angle to be specified? + // TODO Allow padding to be specified as percentage? + k = max$1(0, tau$1 - padAngle * n) / k; + dx = k ? padAngle : tau$1 / n; + + // Compute the start and end angle for each group and subgroup. + // Note: Opera has a bug reordering object literal properties! + x = 0, i = -1; while (++i < n) { + x0 = x, j = -1; while (++j < n) { + var di = groupIndex[i], + dj = subgroupIndex[di][j], + v = matrix[di][dj], + a0 = x, + a1 = x += v * k; + subgroups[dj * n + di] = { + index: di, + subindex: dj, + startAngle: a0, + endAngle: a1, + value: v + }; + } + groups[di] = { + index: di, + startAngle: x0, + endAngle: x, + value: groupSums[di] + }; + x += dx; + } - /*--------------------------------------------------------------------------*/ + // Generate chords for each (non-empty) subgroup-subgroup link. + i = -1; while (++i < n) { + j = i - 1; while (++j < n) { + var source = subgroups[j * n + i], + target = subgroups[i * n + j]; + if (source.value || target.value) { + chords.push(source.value < target.value + ? {source: target, target: source} + : {source: source, target: target}); + } + } + } - /** - * Creates a function optimized to search large arrays for a given `value`, - * starting at `fromIndex`, using strict equality for comparisons, i.e. `===`. - * - * @private - * @param {Array} array The array to search. - * @param {Mixed} value The value to search for. - * @param {Number} [fromIndex=0] The index to search from. - * @param {Number} [largeSize=30] The length at which an array is considered large. - * @returns {Boolean} Returns `true` if `value` is found, else `false`. - */ - function cachedContains(array, fromIndex, largeSize) { - fromIndex || (fromIndex = 0); + return sortChords ? chords.sort(sortChords) : chords; + } - var length = array.length, - isLarge = (length - fromIndex) >= (largeSize || largeArraySize); + chord.padAngle = function(_) { + return arguments.length ? (padAngle = max$1(0, _), chord) : padAngle; + }; - if (isLarge) { - var cache = {}, - index = fromIndex - 1; + chord.sortGroups = function(_) { + return arguments.length ? (sortGroups = _, chord) : sortGroups; + }; - while (++index < length) { - // manually coerce `value` to a string because `hasOwnProperty`, in some - // older versions of Firefox, coerces objects incorrectly - var key = array[index] + ''; - (hasOwnProperty.call(cache, key) ? cache[key] : (cache[key] = [])).push(array[index]); - } - } - return function(value) { - if (isLarge) { - var key = value + ''; - return hasOwnProperty.call(cache, key) && indexOf(cache[key], value) > -1; - } - return indexOf(array, value, fromIndex) > -1; - } + chord.sortSubgroups = function(_) { + return arguments.length ? (sortSubgroups = _, chord) : sortSubgroups; + }; + + chord.sortChords = function(_) { + return arguments.length ? (_ == null ? sortChords = null : (sortChords = compareValue(_))._ = _, chord) : sortChords && sortChords._; + }; + + return chord; } - /** - * Used by `_.max` and `_.min` as the default `callback` when a given - * `collection` is a string value. - * - * @private - * @param {String} value The character to inspect. - * @returns {Number} Returns the code unit of given character. - */ - function charAtCallback(value) { - return value.charCodeAt(0); + var slice$2 = Array.prototype.slice; + + function constant$5(x) { + return function() { + return x; + }; } - /** - * Used by `sortBy` to compare transformed `collection` values, stable sorting - * them in ascending order. - * - * @private - * @param {Object} a The object to compare to `b`. - * @param {Object} b The object to compare to `a`. - * @returns {Number} Returns the sort order indicator of `1` or `-1`. - */ - function compareAscending(a, b) { - var ai = a.index, - bi = b.index; + var pi$2 = Math.PI, + tau$2 = 2 * pi$2, + epsilon$1 = 1e-6, + tauEpsilon = tau$2 - epsilon$1; - a = a.criteria; - b = b.criteria; + function Path() { + this._x0 = this._y0 = // start of current subpath + this._x1 = this._y1 = null; // end of current subpath + this._ = ""; + } - // ensure a stable sort in V8 and other engines - // http://code.google.com/p/v8/issues/detail?id=90 - if (a !== b) { - if (a > b || typeof a == 'undefined') { - return 1; + function path() { + return new Path; + } + + Path.prototype = path.prototype = { + constructor: Path, + moveTo: function(x, y) { + this._ += "M" + (this._x0 = this._x1 = +x) + "," + (this._y0 = this._y1 = +y); + }, + closePath: function() { + if (this._x1 !== null) { + this._x1 = this._x0, this._y1 = this._y0; + this._ += "Z"; } - if (a < b || typeof b == 'undefined') { - return -1; + }, + lineTo: function(x, y) { + this._ += "L" + (this._x1 = +x) + "," + (this._y1 = +y); + }, + quadraticCurveTo: function(x1, y1, x, y) { + this._ += "Q" + (+x1) + "," + (+y1) + "," + (this._x1 = +x) + "," + (this._y1 = +y); + }, + bezierCurveTo: function(x1, y1, x2, y2, x, y) { + this._ += "C" + (+x1) + "," + (+y1) + "," + (+x2) + "," + (+y2) + "," + (this._x1 = +x) + "," + (this._y1 = +y); + }, + arcTo: function(x1, y1, x2, y2, r) { + x1 = +x1, y1 = +y1, x2 = +x2, y2 = +y2, r = +r; + var x0 = this._x1, + y0 = this._y1, + x21 = x2 - x1, + y21 = y2 - y1, + x01 = x0 - x1, + y01 = y0 - y1, + l01_2 = x01 * x01 + y01 * y01; + + // Is the radius negative? Error. + if (r < 0) throw new Error("negative radius: " + r); + + // Is this path empty? Move to (x1,y1). + if (this._x1 === null) { + this._ += "M" + (this._x1 = x1) + "," + (this._y1 = y1); } - } - return ai < bi ? -1 : 1; - } - /** - * Creates a function that, when called, invokes `func` with the `this` - * binding of `thisArg` and prepends any `partailArgs` to the arguments passed - * to the bound function. - * - * @private - * @param {Function|String} func The function to bind or the method name. - * @param {Mixed} [thisArg] The `this` binding of `func`. - * @param {Array} partialArgs An array of arguments to be partially applied. - * @returns {Function} Returns the new bound function. - */ - function createBound(func, thisArg, partialArgs) { - var isFunc = isFunction(func), - isPartial = !partialArgs, - key = thisArg; + // Or, is (x1,y1) coincident with (x0,y0)? Do nothing. + else if (!(l01_2 > epsilon$1)) ; - // juggle arguments - if (isPartial) { - partialArgs = thisArg; - } - if (!isFunc) { - thisArg = func; - } + // Or, are (x0,y0), (x1,y1) and (x2,y2) collinear? + // Equivalently, is (x1,y1) coincident with (x2,y2)? + // Or, is the radius zero? Line to (x1,y1). + else if (!(Math.abs(y01 * x21 - y21 * x01) > epsilon$1) || !r) { + this._ += "L" + (this._x1 = x1) + "," + (this._y1 = y1); + } - function bound() { - // `Function#bind` spec - // http://es5.github.com/#x15.3.4.5 - var args = arguments, - thisBinding = isPartial ? this : thisArg; + // Otherwise, draw an arc! + else { + var x20 = x2 - x0, + y20 = y2 - y0, + l21_2 = x21 * x21 + y21 * y21, + l20_2 = x20 * x20 + y20 * y20, + l21 = Math.sqrt(l21_2), + l01 = Math.sqrt(l01_2), + l = r * Math.tan((pi$2 - Math.acos((l21_2 + l01_2 - l20_2) / (2 * l21 * l01))) / 2), + t01 = l / l01, + t21 = l / l21; + + // If the start tangent is not coincident with (x0,y0), line to. + if (Math.abs(t01 - 1) > epsilon$1) { + this._ += "L" + (x1 + t01 * x01) + "," + (y1 + t01 * y01); + } - if (!isFunc) { - func = thisArg[key]; + this._ += "A" + r + "," + r + ",0,0," + (+(y01 * x20 > x01 * y20)) + "," + (this._x1 = x1 + t21 * x21) + "," + (this._y1 = y1 + t21 * y21); } - if (partialArgs.length) { - args = args.length - ? partialArgs.concat(slice(args)) - : partialArgs; + }, + arc: function(x, y, r, a0, a1, ccw) { + x = +x, y = +y, r = +r; + var dx = r * Math.cos(a0), + dy = r * Math.sin(a0), + x0 = x + dx, + y0 = y + dy, + cw = 1 ^ ccw, + da = ccw ? a0 - a1 : a1 - a0; + + // Is the radius negative? Error. + if (r < 0) throw new Error("negative radius: " + r); + + // Is this path empty? Move to (x0,y0). + if (this._x1 === null) { + this._ += "M" + x0 + "," + y0; } - if (this instanceof bound) { - // ensure `new bound` is an instance of `bound` and `func` - noop.prototype = func.prototype; - thisBinding = new noop; - noop.prototype = null; - // mimic the constructor's `return` behavior - // http://es5.github.com/#x13.2.2 - var result = func.apply(thisBinding, args); - return isObject(result) ? result : thisBinding; + // Or, is (x0,y0) not coincident with the previous point? Line to (x0,y0). + else if (Math.abs(this._x1 - x0) > epsilon$1 || Math.abs(this._y1 - y0) > epsilon$1) { + this._ += "L" + x0 + "," + y0; } - return func.apply(thisBinding, args); - } - return bound; - } - /** - * Produces an iteration callback bound to an optional `thisArg`. If `func` is - * a property name, the callback will return the property value for a given element. - * - * @private - * @param {Function|String} [func=identity|property] The function called per - * iteration or property name to query. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @param {Object} [accumulating] Used to indicate that the callback should - * accept an `accumulator` argument. - * @returns {Function} Returns a callback function. - */ - function createCallback(func, thisArg, accumulating) { - if (!func) { - return identity; - } - if (typeof func != 'function') { - return function(object) { - return object[func]; - }; - } - if (typeof thisArg != 'undefined') { - if (accumulating) { - return function(accumulator, value, index, object) { - return func.call(thisArg, accumulator, value, index, object); - }; - } - return function(value, index, object) { - return func.call(thisArg, value, index, object); - }; - } - return func; - } + // Is this arc empty? We’re done. + if (!r) return; - /** - * Creates compiled iteration functions. - * - * @private - * @param {Object} [options1, options2, ...] The compile options object(s). - * useHas - A boolean to specify using `hasOwnProperty` checks in the object loop. - * args - A string of comma separated arguments the iteration function will accept. - * top - A string of code to execute before the iteration branches. - * arrayLoop - A string of code to execute in the array loop. - * objectLoop - A string of code to execute in the object loop. - * bottom - A string of code to execute after the iteration branches. - * - * @returns {Function} Returns the compiled function. - */ - function createIterator() { - var data = { - 'arrayLoop': '', - 'bottom': '', - 'hasDontEnumBug': hasDontEnumBug, - 'isKeysFast': isKeysFast, - 'objectLoop': '', - 'nonEnumArgs': nonEnumArgs, - 'noCharByIndex': noCharByIndex, - 'shadowed': shadowed, - 'top': '', - 'useHas': true - }; + // Does the angle go the wrong way? Flip the direction. + if (da < 0) da = da % tau$2 + tau$2; - // merge options into a template data object - for (var object, index = 0; object = arguments[index]; index++) { - for (var key in object) { - data[key] = object[key]; + // Is this a complete circle? Draw two arcs to complete the circle. + if (da > tauEpsilon) { + this._ += "A" + r + "," + r + ",0,1," + cw + "," + (x - dx) + "," + (y - dy) + "A" + r + "," + r + ",0,1," + cw + "," + (this._x1 = x0) + "," + (this._y1 = y0); + } + + // Is this arc non-empty? Draw an arc! + else if (da > epsilon$1) { + this._ += "A" + r + "," + r + ",0," + (+(da >= pi$2)) + "," + cw + "," + (this._x1 = x + r * Math.cos(a1)) + "," + (this._y1 = y + r * Math.sin(a1)); } + }, + rect: function(x, y, w, h) { + this._ += "M" + (this._x0 = this._x1 = +x) + "," + (this._y0 = this._y1 = +y) + "h" + (+w) + "v" + (+h) + "h" + (-w) + "Z"; + }, + toString: function() { + return this._; } - var args = data.args; - data.firstArg = /^[^,]+/.exec(args)[0]; + }; - // create the function factory - var factory = Function( - 'createCallback, hasOwnProperty, isArguments, isString, objectTypes, ' + - 'nativeKeys, propertyIsEnumerable', - 'return function(' + args + ') {\n' + iteratorTemplate(data) + '\n}' - ); - // return the compiled function - return factory( - createCallback, hasOwnProperty, isArguments, isString, objectTypes, - nativeKeys, propertyIsEnumerable - ); + function defaultSource(d) { + return d.source; } - /** - * A function compiled to iterate `arguments` objects, arrays, objects, and - * strings consistenly across environments, executing the `callback` for each - * element in the `collection`. The `callback` is bound to `thisArg` and invoked - * with three arguments; (value, index|key, collection). Callbacks may exit - * iteration early by explicitly returning `false`. - * - * @private - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Function} [callback=identity] The function called per iteration. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Array|Object|String} Returns `collection`. - */ - var each = createIterator(eachIteratorOptions); - - /** - * Used by `template` to escape characters for inclusion in compiled - * string literals. - * - * @private - * @param {String} match The matched character to escape. - * @returns {String} Returns the escaped character. - */ - function escapeStringChar(match) { - return '\\' + stringEscapes[match]; + function defaultTarget(d) { + return d.target; } - /** - * Used by `escape` to convert characters to HTML entities. - * - * @private - * @param {String} match The matched character to escape. - * @returns {String} Returns the escaped character. - */ - function escapeHtmlChar(match) { - return htmlEscapes[match]; + function defaultRadius(d) { + return d.radius; } - /** - * Checks if `value` is a DOM node in IE < 9. - * - * @private - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the `value` is a DOM node, else `false`. - */ - function isNode(value) { - // IE < 9 presents DOM nodes as `Object` objects except they have `toString` - // methods that are `typeof` "string" and still can coerce nodes to strings - return typeof value.toString != 'function' && typeof (value + '') == 'string'; + function defaultStartAngle(d) { + return d.startAngle; } - /** - * A no-operation function. - * - * @private - */ - function noop() { - // no operation performed + function defaultEndAngle(d) { + return d.endAngle; } - /** - * Slices the `collection` from the `start` index up to, but not including, - * the `end` index. - * - * Note: This function is used, instead of `Array#slice`, to support node lists - * in IE < 9 and to ensure dense arrays are returned. - * - * @private - * @param {Array|Object|String} collection The collection to slice. - * @param {Number} start The start index. - * @param {Number} end The end index. - * @returns {Array} Returns the new array. - */ - function slice(array, start, end) { - start || (start = 0); - if (typeof end == 'undefined') { - end = array ? array.length : 0; - } - var index = -1, - length = end - start || 0, - result = Array(length < 0 ? 0 : length); + function ribbon() { + var source = defaultSource, + target = defaultTarget, + radius = defaultRadius, + startAngle = defaultStartAngle, + endAngle = defaultEndAngle, + context = null; + + function ribbon() { + var buffer, + argv = slice$2.call(arguments), + s = source.apply(this, argv), + t = target.apply(this, argv), + sr = +radius.apply(this, (argv[0] = s, argv)), + sa0 = startAngle.apply(this, argv) - halfPi$1, + sa1 = endAngle.apply(this, argv) - halfPi$1, + sx0 = sr * cos(sa0), + sy0 = sr * sin(sa0), + tr = +radius.apply(this, (argv[0] = t, argv)), + ta0 = startAngle.apply(this, argv) - halfPi$1, + ta1 = endAngle.apply(this, argv) - halfPi$1; + + if (!context) context = buffer = path(); + + context.moveTo(sx0, sy0); + context.arc(0, 0, sr, sa0, sa1); + if (sa0 !== ta0 || sa1 !== ta1) { // TODO sr !== tr? + context.quadraticCurveTo(0, 0, tr * cos(ta0), tr * sin(ta0)); + context.arc(0, 0, tr, ta0, ta1); + } + context.quadraticCurveTo(0, 0, sx0, sy0); + context.closePath(); - while (++index < length) { - result[index] = array[start + index]; + if (buffer) return context = null, buffer + "" || null; } - return result; - } - /** - * Used by `unescape` to convert HTML entities to characters. - * - * @private - * @param {String} match The matched character to unescape. - * @returns {String} Returns the unescaped character. - */ - function unescapeHtmlChar(match) { - return htmlUnescapes[match]; - } + ribbon.radius = function(_) { + return arguments.length ? (radius = typeof _ === "function" ? _ : constant$5(+_), ribbon) : radius; + }; - /*--------------------------------------------------------------------------*/ + ribbon.startAngle = function(_) { + return arguments.length ? (startAngle = typeof _ === "function" ? _ : constant$5(+_), ribbon) : startAngle; + }; - /** - * Assigns own enumerable properties of source object(s) to the `destination` - * object. Subsequent sources will overwrite propery assignments of previous - * sources. - * - * @static - * @memberOf _ - * @alias extend - * @category Objects - * @param {Object} object The destination object. - * @param {Object} [source1, source2, ...] The source objects. - * @returns {Object} Returns the destination object. - * @example - * - * _.assign({ 'name': 'moe' }, { 'age': 40 }); - * // => { 'name': 'moe', 'age': 40 } - */ - var assign = createIterator(assignIteratorOptions); + ribbon.endAngle = function(_) { + return arguments.length ? (endAngle = typeof _ === "function" ? _ : constant$5(+_), ribbon) : endAngle; + }; - /** - * Checks if `value` is an `arguments` object. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the `value` is an `arguments` object, else `false`. - * @example - * - * (function() { return _.isArguments(arguments); })(1, 2, 3); - * // => true - * - * _.isArguments([1, 2, 3]); - * // => false - */ - function isArguments(value) { - return toString.call(value) == argsClass; - } - // fallback for browsers that can't detect `arguments` objects by [[Class]] - if (noArgsClass) { - isArguments = function(value) { - return value ? hasOwnProperty.call(value, 'callee') : false; + ribbon.source = function(_) { + return arguments.length ? (source = _, ribbon) : source; + }; + + ribbon.target = function(_) { + return arguments.length ? (target = _, ribbon) : target; + }; + + ribbon.context = function(_) { + return arguments.length ? ((context = _ == null ? null : _), ribbon) : context; }; + + return ribbon; } - /** - * Iterates over `object`'s own and inherited enumerable properties, executing - * the `callback` for each property. The `callback` is bound to `thisArg` and - * invoked with three arguments; (value, key, object). Callbacks may exit iteration - * early by explicitly returning `false`. - * - * @static - * @memberOf _ - * @category Objects - * @param {Object} object The object to iterate over. - * @param {Function} [callback=identity] The function called per iteration. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Object} Returns `object`. - * @example - * - * function Dog(name) { - * this.name = name; - * } - * - * Dog.prototype.bark = function() { - * alert('Woof, woof!'); - * }; - * - * _.forIn(new Dog('Dagny'), function(value, key) { - * alert(key); - * }); - * // => alerts 'name' and 'bark' (order is not guaranteed) - */ - var forIn = createIterator(eachIteratorOptions, forOwnIteratorOptions, { - 'useHas': false - }); + var prefix = "$"; - /** - * Iterates over an object's own enumerable properties, executing the `callback` - * for each property. The `callback` is bound to `thisArg` and invoked with three - * arguments; (value, key, object). Callbacks may exit iteration early by explicitly - * returning `false`. - * - * @static - * @memberOf _ - * @category Objects - * @param {Object} object The object to iterate over. - * @param {Function} [callback=identity] The function called per iteration. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Object} Returns `object`. - * @example - * - * _.forOwn({ '0': 'zero', '1': 'one', 'length': 2 }, function(num, key) { - * alert(key); - * }); - * // => alerts '0', '1', and 'length' (order is not guaranteed) - */ - var forOwn = createIterator(eachIteratorOptions, forOwnIteratorOptions); + function Map() {} - /** - * A fallback implementation of `isPlainObject` that checks if a given `value` - * is an object created by the `Object` constructor, assuming objects created - * by the `Object` constructor have no inherited enumerable properties and that - * there are no `Object.prototype` extensions. - * - * @private - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if `value` is a plain object, else `false`. - */ - function shimIsPlainObject(value) { - // avoid non-objects and false positives for `arguments` objects - var result = false; - if (!(value && typeof value == 'object') || isArguments(value)) { - return result; - } - // check that the constructor is `Object` (i.e. `Object instanceof Object`) - var ctor = value.constructor; - if ((!isFunction(ctor) && (!noNodeClass || !isNode(value))) || ctor instanceof ctor) { - // IE < 9 iterates inherited properties before own properties. If the first - // iterated property is an object's own property then there are no inherited - // enumerable properties. - if (iteratesOwnLast) { - forIn(value, function(value, key, object) { - result = !hasOwnProperty.call(object, key); - return false; - }); - return result === false; - } - // In most environments an object's own properties are iterated before - // its inherited properties. If the last iterated property is an object's - // own property then there are no inherited enumerable properties. - forIn(value, function(value, key) { - result = key; - }); - return result === false || hasOwnProperty.call(value, result); + Map.prototype = map$1.prototype = { + constructor: Map, + has: function(key) { + return (prefix + key) in this; + }, + get: function(key) { + return this[prefix + key]; + }, + set: function(key, value) { + this[prefix + key] = value; + return this; + }, + remove: function(key) { + var property = prefix + key; + return property in this && delete this[property]; + }, + clear: function() { + for (var property in this) if (property[0] === prefix) delete this[property]; + }, + keys: function() { + var keys = []; + for (var property in this) if (property[0] === prefix) keys.push(property.slice(1)); + return keys; + }, + values: function() { + var values = []; + for (var property in this) if (property[0] === prefix) values.push(this[property]); + return values; + }, + entries: function() { + var entries = []; + for (var property in this) if (property[0] === prefix) entries.push({key: property.slice(1), value: this[property]}); + return entries; + }, + size: function() { + var size = 0; + for (var property in this) if (property[0] === prefix) ++size; + return size; + }, + empty: function() { + for (var property in this) if (property[0] === prefix) return false; + return true; + }, + each: function(f) { + for (var property in this) if (property[0] === prefix) f(this[property], property.slice(1), this); } - return result; - } - - /** - * A fallback implementation of `Object.keys` that produces an array of the - * given object's own enumerable property names. - * - * @private - * @param {Object} object The object to inspect. - * @returns {Array} Returns a new array of property names. - */ - function shimKeys(object) { - var result = []; - forOwn(object, function(value, key) { - result.push(key); - }); - return result; - } - - /** - * Used to convert characters to HTML entities: - * - * Though the `>` character is escaped for symmetry, characters like `>` and `/` - * don't require escaping in HTML and have no special meaning unless they're part - * of a tag or an unquoted attribute value. - * http://mathiasbynens.be/notes/ambiguous-ampersands (under "semi-related fun fact") - */ - var htmlEscapes = { - '&': '&', - '<': '<', - '>': '>', - '"': '"', - "'": ''' }; - /** Used to convert HTML entities to characters */ - var htmlUnescapes = invert(htmlEscapes); + function map$1(object, f) { + var map = new Map; - /*--------------------------------------------------------------------------*/ + // Copy constructor. + if (object instanceof Map) object.each(function(value, key) { map.set(key, value); }); - /** - * Creates a clone of `value`. If `deep` is `true`, nested objects will also - * be cloned, otherwise they will be assigned by reference. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to clone. - * @param {Boolean} deep A flag to indicate a deep clone. - * @param- {Object} [guard] Internally used to allow this method to work with - * others like `_.map` without using their callback `index` argument for `deep`. - * @param- {Array} [stackA=[]] Internally used to track traversed source objects. - * @param- {Array} [stackB=[]] Internally used to associate clones with their - * source counterparts. - * @returns {Mixed} Returns the cloned `value`. - * @example - * - * var stooges = [ - * { 'name': 'moe', 'age': 40 }, - * { 'name': 'larry', 'age': 50 }, - * { 'name': 'curly', 'age': 60 } - * ]; - * - * var shallow = _.clone(stooges); - * shallow[0] === stooges[0]; - * // => true - * - * var deep = _.clone(stooges, true); - * deep[0] === stooges[0]; - * // => false - */ - function clone(value, deep, guard, stackA, stackB) { - if (value == null) { - return value; - } - if (guard) { - deep = false; - } - // inspect [[Class]] - var isObj = isObject(value); - if (isObj) { - var className = toString.call(value); - if (!cloneableClasses[className] || (noNodeClass && isNode(value))) { - return value; - } - var isArr = isArray(value); - } - // shallow clone - if (!isObj || !deep) { - return isObj - ? (isArr ? slice(value) : assign({}, value)) - : value; + // Index array by numeric index or specified key function. + else if (Array.isArray(object)) { + var i = -1, + n = object.length, + o; + + if (f == null) while (++i < n) map.set(i, object[i]); + else while (++i < n) map.set(f(o = object[i], i, object), o); } - var ctor = ctorByClass[className]; - switch (className) { - case boolClass: - case dateClass: - return new ctor(+value); - case numberClass: - case stringClass: - return new ctor(value); + // Convert object to map. + else if (object) for (var key in object) map.set(key, object[key]); - case regexpClass: - return ctor(value.source, reFlags.exec(value)); - } - // check for circular references and return corresponding clone - stackA || (stackA = []); - stackB || (stackB = []); + return map; + } - var length = stackA.length; - while (length--) { - if (stackA[length] == value) { - return stackB[length]; + function nest() { + var keys = [], + sortKeys = [], + sortValues, + rollup, + nest; + + function apply(array, depth, createResult, setResult) { + if (depth >= keys.length) { + if (sortValues != null) array.sort(sortValues); + return rollup != null ? rollup(array) : array; + } + + var i = -1, + n = array.length, + key = keys[depth++], + keyValue, + value, + valuesByKey = map$1(), + values, + result = createResult(); + + while (++i < n) { + if (values = valuesByKey.get(keyValue = key(value = array[i]) + "")) { + values.push(value); + } else { + valuesByKey.set(keyValue, [value]); + } } - } - // init cloned object - var result = isArr ? ctor(value.length) : {}; - // add the source value to the stack of traversed objects - // and associate it with its clone - stackA.push(value); - stackB.push(result); + valuesByKey.each(function(values, key) { + setResult(result, key, apply(values, depth, createResult, setResult)); + }); - // recursively populate clone (susceptible to call stack limits) - (isArr ? forEach : forOwn)(value, function(objValue, key) { - result[key] = clone(objValue, deep, null, stackA, stackB); - }); + return result; + } - // add array properties assigned by `RegExp#exec` - if (isArr) { - if (hasOwnProperty.call(value, 'index')) { - result.index = value.index; - } - if (hasOwnProperty.call(value, 'input')) { - result.input = value.input; - } + function entries(map, depth) { + if (++depth > keys.length) return map; + var array, sortKey = sortKeys[depth - 1]; + if (rollup != null && depth >= keys.length) array = map.entries(); + else array = [], map.each(function(v, k) { array.push({key: k, values: entries(v, depth)}); }); + return sortKey != null ? array.sort(function(a, b) { return sortKey(a.key, b.key); }) : array; } - return result; - } - /** - * Creates a deep clone of `value`. Functions and DOM nodes are **not** cloned. - * The enumerable properties of `arguments` objects and objects created by - * constructors other than `Object` are cloned to plain `Object` objects. - * - * Note: This function is loosely based on the structured clone algorithm. - * See http://www.w3.org/TR/html5/common-dom-interfaces.html#internal-structured-cloning-algorithm. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to deep clone. - * @returns {Mixed} Returns the deep cloned `value`. - * @example - * - * var stooges = [ - * { 'name': 'moe', 'age': 40 }, - * { 'name': 'larry', 'age': 50 }, - * { 'name': 'curly', 'age': 60 } - * ]; - * - * var deep = _.cloneDeep(stooges); - * deep[0] === stooges[0]; - * // => false - */ - function cloneDeep(value) { - return clone(value, true); + return nest = { + object: function(array) { return apply(array, 0, createObject, setObject); }, + map: function(array) { return apply(array, 0, createMap, setMap); }, + entries: function(array) { return entries(apply(array, 0, createMap, setMap), 0); }, + key: function(d) { keys.push(d); return nest; }, + sortKeys: function(order) { sortKeys[keys.length - 1] = order; return nest; }, + sortValues: function(order) { sortValues = order; return nest; }, + rollup: function(f) { rollup = f; return nest; } + }; } - /** - * Assigns own enumerable properties of source object(s) to the `destination` - * object for all `destination` properties that resolve to `null`/`undefined`. - * Once a property is set, additional defaults of the same property will be - * ignored. - * - * @static - * @memberOf _ - * @category Objects - * @param {Object} object The destination object. - * @param {Object} [default1, default2, ...] The default objects. - * @returns {Object} Returns the destination object. - * @example - * - * var iceCream = { 'flavor': 'chocolate' }; - * _.defaults(iceCream, { 'flavor': 'vanilla', 'sprinkles': 'rainbow' }); - * // => { 'flavor': 'chocolate', 'sprinkles': 'rainbow' } - */ - var defaults = createIterator(assignIteratorOptions, { - 'objectLoop': 'if (result[index] == null) ' + assignIteratorOptions.objectLoop - }); + function createObject() { + return {}; + } - /** - * Creates a sorted array of all enumerable properties, own and inherited, - * of `object` that have function values. - * - * @static - * @memberOf _ - * @alias methods - * @category Objects - * @param {Object} object The object to inspect. - * @returns {Array} Returns a new array of property names that have function values. - * @example - * - * _.functions(_); - * // => ['all', 'any', 'bind', 'bindAll', 'clone', 'compact', 'compose', ...] - */ - function functions(object) { - var result = []; - forIn(object, function(value, key) { - if (isFunction(value)) { - result.push(key); - } - }); - return result.sort(); + function setObject(object, key, value) { + object[key] = value; } - /** - * Checks if the specified object `property` exists and is a direct property, - * instead of an inherited property. - * - * @static - * @memberOf _ - * @category Objects - * @param {Object} object The object to check. - * @param {String} property The property to check for. - * @returns {Boolean} Returns `true` if key is a direct property, else `false`. - * @example - * - * _.has({ 'a': 1, 'b': 2, 'c': 3 }, 'b'); - * // => true - */ - function has(object, property) { - return object ? hasOwnProperty.call(object, property) : false; + function createMap() { + return map$1(); } - /** - * Creates an object composed of the inverted keys and values of the given `object`. - * - * @static - * @memberOf _ - * @category Objects - * @param {Object} object The object to invert. - * @returns {Object} Returns the created inverted object. - * @example - * - * _.invert({ 'first': 'Moe', 'second': 'Larry', 'third': 'Curly' }); - * // => { 'Moe': 'first', 'Larry': 'second', 'Curly': 'third' } (order is not guaranteed) - */ - function invert(object) { - var result = {}; - forOwn(object, function(value, key) { - result[value] = key; - }); - return result; + function setMap(map, key, value) { + map.set(key, value); } - /** - * Checks if `value` is an array. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the `value` is an array, else `false`. - * @example - * - * (function() { return _.isArray(arguments); })(); - * // => false - * - * _.isArray([1, 2, 3]); - * // => true - */ - var isArray = nativeIsArray || function(value) { - // `instanceof` may cause a memory leak in IE 7 if `value` is a host object - // http://ajaxian.com/archives/working-aroung-the-instanceof-memory-leak - return (argsAreObjects && value instanceof Array) || toString.call(value) == arrayClass; + function Set() {} + + var proto = map$1.prototype; + + Set.prototype = set$2.prototype = { + constructor: Set, + has: proto.has, + add: function(value) { + value += ""; + this[prefix + value] = value; + return this; + }, + remove: proto.remove, + clear: proto.clear, + values: proto.keys, + size: proto.size, + empty: proto.empty, + each: proto.each }; - /** - * Checks if `value` is a boolean (`true` or `false`) value. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the `value` is a boolean value, else `false`. - * @example - * - * _.isBoolean(null); - * // => false - */ - function isBoolean(value) { - return value === true || value === false || toString.call(value) == boolClass; + function set$2(object, f) { + var set = new Set; + + // Copy constructor. + if (object instanceof Set) object.each(function(value) { set.add(value); }); + + // Otherwise, assume it’s an array. + else if (object) { + var i = -1, n = object.length; + if (f == null) while (++i < n) set.add(object[i]); + else while (++i < n) set.add(f(object[i], i, object)); + } + + return set; } - /** - * Checks if `value` is a date. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the `value` is a date, else `false`. - * @example - * - * _.isDate(new Date); - * // => true - */ - function isDate(value) { - return value instanceof Date || toString.call(value) == dateClass; + function keys(map) { + var keys = []; + for (var key in map) keys.push(key); + return keys; } - /** - * Checks if `value` is a DOM element. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the `value` is a DOM element, else `false`. - * @example - * - * _.isElement(document.body); - * // => true - */ - function isElement(value) { - return value ? value.nodeType === 1 : false; + function values(map) { + var values = []; + for (var key in map) values.push(map[key]); + return values; } - /** - * Checks if `value` is empty. Arrays, strings, or `arguments` objects with a - * length of `0` and objects with no own enumerable properties are considered - * "empty". - * - * @static - * @memberOf _ - * @category Objects - * @param {Array|Object|String} value The value to inspect. - * @returns {Boolean} Returns `true` if the `value` is empty, else `false`. - * @example - * - * _.isEmpty([1, 2, 3]); - * // => false - * - * _.isEmpty({}); - * // => true - * - * _.isEmpty(''); - * // => true - */ - function isEmpty(value) { - var result = true; - if (!value) { - return result; - } - var className = toString.call(value), - length = value.length; + function entries(map) { + var entries = []; + for (var key in map) entries.push({key: key, value: map[key]}); + return entries; + } - if ((className == arrayClass || className == stringClass || - className == argsClass || (noArgsClass && isArguments(value))) || - (className == objectClass && typeof length == 'number' && isFunction(value.splice))) { - return !length; - } - forOwn(value, function() { - return (result = false); + var EOL = {}, + EOF = {}, + QUOTE = 34, + NEWLINE = 10, + RETURN = 13; + + function objectConverter(columns) { + return new Function("d", "return {" + columns.map(function(name, i) { + return JSON.stringify(name) + ": d[" + i + "]"; + }).join(",") + "}"); + } + + function customConverter(columns, f) { + var object = objectConverter(columns); + return function(row, i) { + return f(object(row), i, columns); + }; + } + + // Compute unique columns in order of discovery. + function inferColumns(rows) { + var columnSet = Object.create(null), + columns = []; + + rows.forEach(function(row) { + for (var column in row) { + if (!(column in columnSet)) { + columns.push(columnSet[column] = column); + } + } }); - return result; + + return columns; } - /** - * Performs a deep comparison between two values to determine if they are - * equivalent to each other. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} a The value to compare. - * @param {Mixed} b The other value to compare. - * @param- {Object} [stackA=[]] Internally used track traversed `a` objects. - * @param- {Object} [stackB=[]] Internally used track traversed `b` objects. - * @returns {Boolean} Returns `true` if the values are equvalent, else `false`. - * @example - * - * var moe = { 'name': 'moe', 'luckyNumbers': [13, 27, 34] }; - * var clone = { 'name': 'moe', 'luckyNumbers': [13, 27, 34] }; - * - * moe == clone; - * // => false - * - * _.isEqual(moe, clone); - * // => true - */ - function isEqual(a, b, stackA, stackB) { - // exit early for identical values - if (a === b) { - // treat `+0` vs. `-0` as not equal - return a !== 0 || (1 / a == 1 / b); - } - // a strict comparison is necessary because `null == undefined` - if (a == null || b == null) { - return a === b; - } - // compare [[Class]] names - var className = toString.call(a), - otherName = toString.call(b); + function dsv(delimiter) { + var reFormat = new RegExp("[\"" + delimiter + "\n\r]"), + DELIMITER = delimiter.charCodeAt(0); - if (className == argsClass) { - className = objectClass; - } - if (otherName == argsClass) { - otherName = objectClass; - } - if (className != otherName) { - return false; - } - switch (className) { - case boolClass: - case dateClass: - // coerce dates and booleans to numbers, dates to milliseconds and booleans - // to `1` or `0`, treating invalid dates coerced to `NaN` as not equal - return +a == +b; - - case numberClass: - // treat `NaN` vs. `NaN` as equal - return a != +a - ? b != +b - // but treat `+0` vs. `-0` as not equal - : (a == 0 ? (1 / a == 1 / b) : a == +b); - - case regexpClass: - case stringClass: - // coerce regexes to strings (http://es5.github.com/#x15.10.6.4) - // treat string primitives and their corresponding object instances as equal - return a == b + ''; - } - var isArr = className == arrayClass; - if (!isArr) { - // unwrap any `lodash` wrapped values - if (a.__wrapped__ || b.__wrapped__) { - return isEqual(a.__wrapped__ || a, b.__wrapped__ || b); - } - // exit for functions and DOM nodes - if (className != objectClass || (noNodeClass && (isNode(a) || isNode(b)))) { - return false; + function parse(text, f) { + var convert, columns, rows = parseRows(text, function(row, i) { + if (convert) return convert(row, i - 1); + columns = row, convert = f ? customConverter(row, f) : objectConverter(row); + }); + rows.columns = columns || []; + return rows; + } + + function parseRows(text, f) { + var rows = [], // output rows + N = text.length, + I = 0, // current character index + n = 0, // current line number + t, // current token + eof = N <= 0, // current token followed by EOF? + eol = false; // current token followed by EOL? + + // Strip the trailing newline. + if (text.charCodeAt(N - 1) === NEWLINE) --N; + if (text.charCodeAt(N - 1) === RETURN) --N; + + function token() { + if (eof) return EOF; + if (eol) return eol = false, EOL; + + // Unescape quotes. + var i, j = I, c; + if (text.charCodeAt(j) === QUOTE) { + while (I++ < N && text.charCodeAt(I) !== QUOTE || text.charCodeAt(++I) === QUOTE); + if ((i = I) >= N) eof = true; + else if ((c = text.charCodeAt(I++)) === NEWLINE) eol = true; + else if (c === RETURN) { eol = true; if (text.charCodeAt(I) === NEWLINE) ++I; } + return text.slice(j + 1, i - 1).replace(/""/g, "\""); + } + + // Find next delimiter or newline. + while (I < N) { + if ((c = text.charCodeAt(i = I++)) === NEWLINE) eol = true; + else if (c === RETURN) { eol = true; if (text.charCodeAt(I) === NEWLINE) ++I; } + else if (c !== DELIMITER) continue; + return text.slice(j, i); + } + + // Return last token before EOF. + return eof = true, text.slice(j, N); } - // in older versions of Opera, `arguments` objects have `Array` constructors - var ctorA = !argsAreObjects && isArguments(a) ? Object : a.constructor, - ctorB = !argsAreObjects && isArguments(b) ? Object : b.constructor; - // non `Object` object instances with different constructors are not equal - if (ctorA != ctorB && !( - isFunction(ctorA) && ctorA instanceof ctorA && - isFunction(ctorB) && ctorB instanceof ctorB - )) { - return false; + while ((t = token()) !== EOF) { + var row = []; + while (t !== EOL && t !== EOF) row.push(t), t = token(); + if (f && (row = f(row, n++)) == null) continue; + rows.push(row); } + + return rows; } - // assume cyclic structures are equal - // the algorithm for detecting cyclic structures is adapted from ES 5.1 - // section 15.12.3, abstract operation `JO` (http://es5.github.com/#x15.12.3) - stackA || (stackA = []); - stackB || (stackB = []); - var length = stackA.length; - while (length--) { - if (stackA[length] == a) { - return stackB[length] == b; - } + function format(rows, columns) { + if (columns == null) columns = inferColumns(rows); + return [columns.map(formatValue).join(delimiter)].concat(rows.map(function(row) { + return columns.map(function(column) { + return formatValue(row[column]); + }).join(delimiter); + })).join("\n"); } - var index = -1, - result = true, - size = 0; - // add `a` and `b` to the stack of traversed objects - stackA.push(a); - stackB.push(b); + function formatRows(rows) { + return rows.map(formatRow).join("\n"); + } - // recursively compare objects and arrays (susceptible to call stack limits) - if (isArr) { - // compare lengths to determine if a deep comparison is necessary - size = a.length; - result = size == b.length; - - if (result) { - // deep compare the contents, ignoring non-numeric properties - while (size--) { - if (!(result = isEqual(a[size], b[size], stackA, stackB))) { - break; - } - } - } - return result; + function formatRow(row) { + return row.map(formatValue).join(delimiter); } - // deep compare objects using `forIn`, instead of `forOwn`, to avoid `Object.keys` - // which, in this case, is more costly - forIn(a, function(value, key, a) { - if (hasOwnProperty.call(a, key)) { - // count the number of properties. - size++; - // deep compare each property value. - return (result = hasOwnProperty.call(b, key) && isEqual(value, b[key], stackA, stackB)); - } - }); - if (result) { - // ensure both objects have the same number of properties - forIn(b, function(value, key, b) { - if (hasOwnProperty.call(b, key)) { - // `size` will be `-1` if `b` has more properties than `a` - return (result = --size > -1); - } - }); + function formatValue(text) { + return text == null ? "" + : reFormat.test(text += "") ? "\"" + text.replace(/"/g, "\"\"") + "\"" + : text; } - return result; + + return { + parse: parse, + parseRows: parseRows, + format: format, + formatRows: formatRows + }; } - /** - * Checks if `value` is, or can be coerced to, a finite number. - * - * Note: This is not the same as native `isFinite`, which will return true for - * booleans and empty strings. See http://es5.github.com/#x15.1.2.5. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the `value` is a finite number, else `false`. - * @example - * - * _.isFinite(-101); - * // => true - * - * _.isFinite('10'); - * // => true - * - * _.isFinite(true); - * // => false - * - * _.isFinite(''); - * // => false - * - * _.isFinite(Infinity); - * // => false - */ - function isFinite(value) { - return nativeIsFinite(value) && !nativeIsNaN(parseFloat(value)); - } + var csv = dsv(","); - /** - * Checks if `value` is a function. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the `value` is a function, else `false`. - * @example - * - * _.isFunction(_); - * // => true - */ - function isFunction(value) { - return typeof value == 'function'; + var csvParse = csv.parse; + var csvParseRows = csv.parseRows; + var csvFormat = csv.format; + var csvFormatRows = csv.formatRows; + + var tsv = dsv("\t"); + + var tsvParse = tsv.parse; + var tsvParseRows = tsv.parseRows; + var tsvFormat = tsv.format; + var tsvFormatRows = tsv.formatRows; + + function center$1(x, y) { + var nodes; + + if (x == null) x = 0; + if (y == null) y = 0; + + function force() { + var i, + n = nodes.length, + node, + sx = 0, + sy = 0; + + for (i = 0; i < n; ++i) { + node = nodes[i], sx += node.x, sy += node.y; + } + + for (sx = sx / n - x, sy = sy / n - y, i = 0; i < n; ++i) { + node = nodes[i], node.x -= sx, node.y -= sy; + } + } + + force.initialize = function(_) { + nodes = _; + }; + + force.x = function(_) { + return arguments.length ? (x = +_, force) : x; + }; + + force.y = function(_) { + return arguments.length ? (y = +_, force) : y; + }; + + return force; } - // fallback for older versions of Chrome and Safari - if (isFunction(/x/)) { - isFunction = function(value) { - return value instanceof Function || toString.call(value) == funcClass; + + function constant$6(x) { + return function() { + return x; }; } - /** - * Checks if `value` is the language type of Object. - * (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`) - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the `value` is an object, else `false`. - * @example - * - * _.isObject({}); - * // => true - * - * _.isObject([1, 2, 3]); - * // => true - * - * _.isObject(1); - * // => false - */ - function isObject(value) { - // check if the value is the ECMAScript language type of Object - // http://es5.github.com/#x8 - // and avoid a V8 bug - // http://code.google.com/p/v8/issues/detail?id=2291 - return value ? objectTypes[typeof value] : false; + function jiggle() { + return (Math.random() - 0.5) * 1e-6; } - /** - * Checks if `value` is `NaN`. - * - * Note: This is not the same as native `isNaN`, which will return `true` for - * `undefined` and other values. See http://es5.github.com/#x15.1.2.4. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the `value` is `NaN`, else `false`. - * @example - * - * _.isNaN(NaN); - * // => true - * - * _.isNaN(new Number(NaN)); - * // => true - * - * isNaN(undefined); - * // => true - * - * _.isNaN(undefined); - * // => false - */ - function isNaN(value) { - // `NaN` as a primitive is the only value that is not equal to itself - // (perform the [[Class]] check first to avoid errors with some host objects in IE) - return isNumber(value) && value != +value + function tree_add(d) { + var x = +this._x.call(null, d), + y = +this._y.call(null, d); + return add(this.cover(x, y), x, y, d); } - /** - * Checks if `value` is `null`. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the `value` is `null`, else `false`. - * @example - * - * _.isNull(null); - * // => true - * - * _.isNull(undefined); - * // => false - */ - function isNull(value) { - return value === null; + function add(tree, x, y, d) { + if (isNaN(x) || isNaN(y)) return tree; // ignore invalid points + + var parent, + node = tree._root, + leaf = {data: d}, + x0 = tree._x0, + y0 = tree._y0, + x1 = tree._x1, + y1 = tree._y1, + xm, + ym, + xp, + yp, + right, + bottom, + i, + j; + + // If the tree is empty, initialize the root as a leaf. + if (!node) return tree._root = leaf, tree; + + // Find the existing leaf for the new point, or add it. + while (node.length) { + if (right = x >= (xm = (x0 + x1) / 2)) x0 = xm; else x1 = xm; + if (bottom = y >= (ym = (y0 + y1) / 2)) y0 = ym; else y1 = ym; + if (parent = node, !(node = node[i = bottom << 1 | right])) return parent[i] = leaf, tree; + } + + // Is the new point is exactly coincident with the existing point? + xp = +tree._x.call(null, node.data); + yp = +tree._y.call(null, node.data); + if (x === xp && y === yp) return leaf.next = node, parent ? parent[i] = leaf : tree._root = leaf, tree; + + // Otherwise, split the leaf node until the old and new point are separated. + do { + parent = parent ? parent[i] = new Array(4) : tree._root = new Array(4); + if (right = x >= (xm = (x0 + x1) / 2)) x0 = xm; else x1 = xm; + if (bottom = y >= (ym = (y0 + y1) / 2)) y0 = ym; else y1 = ym; + } while ((i = bottom << 1 | right) === (j = (yp >= ym) << 1 | (xp >= xm))); + return parent[j] = node, parent[i] = leaf, tree; } - /** - * Checks if `value` is a number. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the `value` is a number, else `false`. - * @example - * - * _.isNumber(8.4 * 5); - * // => true - */ - function isNumber(value) { - return typeof value == 'number' || toString.call(value) == numberClass; + function addAll(data) { + var d, i, n = data.length, + x, + y, + xz = new Array(n), + yz = new Array(n), + x0 = Infinity, + y0 = Infinity, + x1 = -Infinity, + y1 = -Infinity; + + // Compute the points and their extent. + for (i = 0; i < n; ++i) { + if (isNaN(x = +this._x.call(null, d = data[i])) || isNaN(y = +this._y.call(null, d))) continue; + xz[i] = x; + yz[i] = y; + if (x < x0) x0 = x; + if (x > x1) x1 = x; + if (y < y0) y0 = y; + if (y > y1) y1 = y; + } + + // If there were no (valid) points, inherit the existing extent. + if (x1 < x0) x0 = this._x0, x1 = this._x1; + if (y1 < y0) y0 = this._y0, y1 = this._y1; + + // Expand the tree to cover the new points. + this.cover(x0, y0).cover(x1, y1); + + // Add the new points. + for (i = 0; i < n; ++i) { + add(this, xz[i], yz[i], data[i]); + } + + return this; } - /** - * Checks if a given `value` is an object created by the `Object` constructor. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if `value` is a plain object, else `false`. - * @example - * - * function Stooge(name, age) { - * this.name = name; - * this.age = age; - * } - * - * _.isPlainObject(new Stooge('moe', 40)); - * // => false - * - * _.isPlainObject([1, 2, 3]); - * // => false - * - * _.isPlainObject({ 'name': 'moe', 'age': 40 }); - * // => true - */ - var isPlainObject = !getPrototypeOf ? shimIsPlainObject : function(value) { - if (!(value && typeof value == 'object')) { - return false; + function tree_cover(x, y) { + if (isNaN(x = +x) || isNaN(y = +y)) return this; // ignore invalid points + + var x0 = this._x0, + y0 = this._y0, + x1 = this._x1, + y1 = this._y1; + + // If the quadtree has no extent, initialize them. + // Integer extent are necessary so that if we later double the extent, + // the existing quadrant boundaries don’t change due to floating point error! + if (isNaN(x0)) { + x1 = (x0 = Math.floor(x)) + 1; + y1 = (y0 = Math.floor(y)) + 1; + } + + // Otherwise, double repeatedly to cover. + else if (x0 > x || x > x1 || y0 > y || y > y1) { + var z = x1 - x0, + node = this._root, + parent, + i; + + switch (i = (y < (y0 + y1) / 2) << 1 | (x < (x0 + x1) / 2)) { + case 0: { + do parent = new Array(4), parent[i] = node, node = parent; + while (z *= 2, x1 = x0 + z, y1 = y0 + z, x > x1 || y > y1); + break; + } + case 1: { + do parent = new Array(4), parent[i] = node, node = parent; + while (z *= 2, x0 = x1 - z, y1 = y0 + z, x0 > x || y > y1); + break; + } + case 2: { + do parent = new Array(4), parent[i] = node, node = parent; + while (z *= 2, x1 = x0 + z, y0 = y1 - z, x > x1 || y0 > y); + break; + } + case 3: { + do parent = new Array(4), parent[i] = node, node = parent; + while (z *= 2, x0 = x1 - z, y0 = y1 - z, x0 > x || y0 > y); + break; + } + } + + if (this._root && this._root.length) this._root = node; } - var valueOf = value.valueOf, - objProto = typeof valueOf == 'function' && (objProto = getPrototypeOf(valueOf)) && getPrototypeOf(objProto); - return objProto - ? value == objProto || (getPrototypeOf(value) == objProto && !isArguments(value)) - : shimIsPlainObject(value); - }; + // If the quadtree covers the point already, just return. + else return this; - /** - * Checks if `value` is a regular expression. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the `value` is a regular expression, else `false`. - * @example - * - * _.isRegExp(/moe/); - * // => true - */ - function isRegExp(value) { - return value instanceof RegExp || toString.call(value) == regexpClass; + this._x0 = x0; + this._y0 = y0; + this._x1 = x1; + this._y1 = y1; + return this; } - /** - * Checks if `value` is a string. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the `value` is a string, else `false`. - * @example - * - * _.isString('moe'); - * // => true - */ - function isString(value) { - return typeof value == 'string' || toString.call(value) == stringClass; + function tree_data() { + var data = []; + this.visit(function(node) { + if (!node.length) do data.push(node.data); while (node = node.next) + }); + return data; } - /** - * Checks if `value` is `undefined`. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the `value` is `undefined`, else `false`. - * @example - * - * _.isUndefined(void 0); - * // => true - */ - function isUndefined(value) { - return typeof value == 'undefined'; + function tree_extent(_) { + return arguments.length + ? this.cover(+_[0][0], +_[0][1]).cover(+_[1][0], +_[1][1]) + : isNaN(this._x0) ? undefined : [[this._x0, this._y0], [this._x1, this._y1]]; } - /** - * Creates an array composed of the own enumerable property names of `object`. - * - * @static - * @memberOf _ - * @category Objects - * @param {Object} object The object to inspect. - * @returns {Array} Returns a new array of property names. - * @example - * - * _.keys({ 'one': 1, 'two': 2, 'three': 3 }); - * // => ['one', 'two', 'three'] (order is not guaranteed) - */ - var keys = !nativeKeys ? shimKeys : function(object) { - // avoid iterating over the `prototype` property - return typeof object == 'function' && propertyIsEnumerable.call(object, 'prototype') - ? shimKeys(object) - : (isObject(object) ? nativeKeys(object) : []); - }; + function Quad(node, x0, y0, x1, y1) { + this.node = node; + this.x0 = x0; + this.y0 = y0; + this.x1 = x1; + this.y1 = y1; + } - /** - * Merges enumerable properties of the source object(s) into the `destination` - * object. Subsequent sources will overwrite propery assignments of previous - * sources. - * - * @static - * @memberOf _ - * @category Objects - * @param {Object} object The destination object. - * @param {Object} [source1, source2, ...] The source objects. - * @param- {Object} [indicator] Internally used to indicate that the `stack` - * argument is an array of traversed objects instead of another source object. - * @param- {Array} [stackA=[]] Internally used to track traversed source objects. - * @param- {Array} [stackB=[]] Internally used to associate values with their - * source counterparts. - * @returns {Object} Returns the destination object. - * @example - * - * var stooges = [ - * { 'name': 'moe' }, - * { 'name': 'larry' } - * ]; - * - * var ages = [ - * { 'age': 40 }, - * { 'age': 50 } - * ]; - * - * _.merge(stooges, ages); - * // => [{ 'name': 'moe', 'age': 40 }, { 'name': 'larry', 'age': 50 }] - */ - function merge(object, source, indicator) { - var args = arguments, - index = 0, - length = 2, - stackA = args[3], - stackB = args[4]; + function tree_find(x, y, radius) { + var data, + x0 = this._x0, + y0 = this._y0, + x1, + y1, + x2, + y2, + x3 = this._x1, + y3 = this._y1, + quads = [], + node = this._root, + q, + i; - if (indicator !== indicatorObject) { - stackA = []; - stackB = []; + if (node) quads.push(new Quad(node, x0, y0, x3, y3)); + if (radius == null) radius = Infinity; + else { + x0 = x - radius, y0 = y - radius; + x3 = x + radius, y3 = y + radius; + radius *= radius; + } + + while (q = quads.pop()) { + + // Stop searching if this quadrant can’t contain a closer node. + if (!(node = q.node) + || (x1 = q.x0) > x3 + || (y1 = q.y0) > y3 + || (x2 = q.x1) < x0 + || (y2 = q.y1) < y0) continue; + + // Bisect the current quadrant. + if (node.length) { + var xm = (x1 + x2) / 2, + ym = (y1 + y2) / 2; + + quads.push( + new Quad(node[3], xm, ym, x2, y2), + new Quad(node[2], x1, ym, xm, y2), + new Quad(node[1], xm, y1, x2, ym), + new Quad(node[0], x1, y1, xm, ym) + ); - // work with `_.reduce` by only using its callback `accumulator` and `value` arguments - if (typeof indicator != 'number') { - length = args.length; + // Visit the closest quadrant first. + if (i = (y >= ym) << 1 | (x >= xm)) { + q = quads[quads.length - 1]; + quads[quads.length - 1] = quads[quads.length - 1 - i]; + quads[quads.length - 1 - i] = q; + } } - } - while (++index < length) { - forOwn(args[index], function(source, key) { - var found, isArr, value; - if (source && ((isArr = isArray(source)) || isPlainObject(source))) { - // avoid merging previously merged cyclic sources - var stackLength = stackA.length; - while (stackLength--) { - found = stackA[stackLength] == source; - if (found) { - break; - } - } - if (found) { - object[key] = stackB[stackLength]; - } - else { - // add `source` and associated `value` to the stack of traversed objects - stackA.push(source); - stackB.push(value = (value = object[key], isArr) - ? (isArray(value) ? value : []) - : (isPlainObject(value) ? value : {}) - ); - // recursively merge objects and arrays (susceptible to call stack limits) - object[key] = merge(value, source, indicatorObject, stackA, stackB); - } - } else if (source != null) { - object[key] = source; + + // Visit this point. (Visiting coincident points isn’t necessary!) + else { + var dx = x - +this._x.call(null, node.data), + dy = y - +this._y.call(null, node.data), + d2 = dx * dx + dy * dy; + if (d2 < radius) { + var d = Math.sqrt(radius = d2); + x0 = x - d, y0 = y - d; + x3 = x + d, y3 = y + d; + data = node.data; } - }); + } } - return object; - } - /** - * Creates a shallow clone of `object` excluding the specified properties. - * Property names may be specified as individual arguments or as arrays of - * property names. If `callback` is passed, it will be executed for each property - * in the `object`, omitting the properties `callback` returns truthy for. The - * `callback` is bound to `thisArg` and invoked with three arguments; (value, key, object). - * - * @static - * @memberOf _ - * @category Objects - * @param {Object} object The source object. - * @param {Function|String} callback|[prop1, prop2, ...] The properties to omit - * or the function called per iteration. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Object} Returns an object without the omitted properties. - * @example - * - * _.omit({ 'name': 'moe', 'age': 40, 'userid': 'moe1' }, 'userid'); - * // => { 'name': 'moe', 'age': 40 } - * - * _.omit({ 'name': 'moe', '_hint': 'knucklehead', '_seed': '96c4eb' }, function(value, key) { - * return key.charAt(0) == '_'; - * }); - * // => { 'name': 'moe' } - */ - function omit(object, callback, thisArg) { - var isFunc = typeof callback == 'function', - result = {}; + return data; + } - if (isFunc) { - callback = createCallback(callback, thisArg); - } else { - var props = concat.apply(arrayRef, arguments); + function tree_remove(d) { + if (isNaN(x = +this._x.call(null, d)) || isNaN(y = +this._y.call(null, d))) return this; // ignore invalid points + + var parent, + node = this._root, + retainer, + previous, + next, + x0 = this._x0, + y0 = this._y0, + x1 = this._x1, + y1 = this._y1, + x, + y, + xm, + ym, + right, + bottom, + i, + j; + + // If the tree is empty, initialize the root as a leaf. + if (!node) return this; + + // Find the leaf node for the point. + // While descending, also retain the deepest parent with a non-removed sibling. + if (node.length) while (true) { + if (right = x >= (xm = (x0 + x1) / 2)) x0 = xm; else x1 = xm; + if (bottom = y >= (ym = (y0 + y1) / 2)) y0 = ym; else y1 = ym; + if (!(parent = node, node = node[i = bottom << 1 | right])) return this; + if (!node.length) break; + if (parent[(i + 1) & 3] || parent[(i + 2) & 3] || parent[(i + 3) & 3]) retainer = parent, j = i; + } + + // Find the point to remove. + while (node.data !== d) if (!(previous = node, node = node.next)) return this; + if (next = node.next) delete node.next; + + // If there are multiple coincident points, remove just the point. + if (previous) return (next ? previous.next = next : delete previous.next), this; + + // If this is the root point, remove it. + if (!parent) return this._root = next, this; + + // Remove this leaf. + next ? parent[i] = next : delete parent[i]; + + // If the parent now contains exactly one leaf, collapse superfluous parents. + if ((node = parent[0] || parent[1] || parent[2] || parent[3]) + && node === (parent[3] || parent[2] || parent[1] || parent[0]) + && !node.length) { + if (retainer) retainer[j] = node; + else this._root = node; } - forIn(object, function(value, key, object) { - if (isFunc - ? !callback(value, key, object) - : indexOf(props, key, 1) < 0 - ) { - result[key] = value; - } - }); - return result; + + return this; } - /** - * Creates a two dimensional array of the given object's key-value pairs, - * i.e. `[[key1, value1], [key2, value2]]`. - * - * @static - * @memberOf _ - * @category Objects - * @param {Object} object The object to inspect. - * @returns {Array} Returns new array of key-value pairs. - * @example - * - * _.pairs({ 'moe': 30, 'larry': 40, 'curly': 50 }); - * // => [['moe', 30], ['larry', 40], ['curly', 50]] (order is not guaranteed) - */ - function pairs(object) { - var result = []; - forOwn(object, function(value, key) { - result.push([key, value]); - }); - return result; + function removeAll(data) { + for (var i = 0, n = data.length; i < n; ++i) this.remove(data[i]); + return this; } - /** - * Creates a shallow clone of `object` composed of the specified properties. - * Property names may be specified as individual arguments or as arrays of - * property names. If `callback` is passed, it will be executed for each property - * in the `object`, picking the properties `callback` returns truthy for. The - * `callback` is bound to `thisArg` and invoked with three arguments; (value, key, object). - * - * @static - * @memberOf _ - * @category Objects - * @param {Object} object The source object. - * @param {Function|String} callback|[prop1, prop2, ...] The properties to pick - * or the function called per iteration. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Object} Returns an object composed of the picked properties. - * @example - * - * _.pick({ 'name': 'moe', 'age': 40, 'userid': 'moe1' }, 'name', 'age'); - * // => { 'name': 'moe', 'age': 40 } - * - * _.pick({ 'name': 'moe', '_hint': 'knucklehead', '_seed': '96c4eb' }, function(value, key) { - * return key.charAt(0) != '_'; - * }); - * // => { 'name': 'moe' } - */ - function pick(object, callback, thisArg) { - var result = {}; - if (typeof callback != 'function') { - var index = 0, - props = concat.apply(arrayRef, arguments), - length = props.length; + function tree_root() { + return this._root; + } - while (++index < length) { - var key = props[index]; - if (key in object) { - result[key] = object[key]; - } + function tree_size() { + var size = 0; + this.visit(function(node) { + if (!node.length) do ++size; while (node = node.next) + }); + return size; + } + + function tree_visit(callback) { + var quads = [], q, node = this._root, child, x0, y0, x1, y1; + if (node) quads.push(new Quad(node, this._x0, this._y0, this._x1, this._y1)); + while (q = quads.pop()) { + if (!callback(node = q.node, x0 = q.x0, y0 = q.y0, x1 = q.x1, y1 = q.y1) && node.length) { + var xm = (x0 + x1) / 2, ym = (y0 + y1) / 2; + if (child = node[3]) quads.push(new Quad(child, xm, ym, x1, y1)); + if (child = node[2]) quads.push(new Quad(child, x0, ym, xm, y1)); + if (child = node[1]) quads.push(new Quad(child, xm, y0, x1, ym)); + if (child = node[0]) quads.push(new Quad(child, x0, y0, xm, ym)); } - } else { - callback = createCallback(callback, thisArg); - forIn(object, function(value, key, object) { - if (callback(value, key, object)) { - result[key] = value; - } - }); } - return result; + return this; } - /** - * Creates an array composed of the own enumerable property values of `object`. - * - * @static - * @memberOf _ - * @category Objects - * @param {Object} object The object to inspect. - * @returns {Array} Returns a new array of property values. - * @example - * - * _.values({ 'one': 1, 'two': 2, 'three': 3 }); - * // => [1, 2, 3] - */ - function values(object) { - var result = []; - forOwn(object, function(value) { - result.push(value); - }); - return result; + function tree_visitAfter(callback) { + var quads = [], next = [], q; + if (this._root) quads.push(new Quad(this._root, this._x0, this._y0, this._x1, this._y1)); + while (q = quads.pop()) { + var node = q.node; + if (node.length) { + var child, x0 = q.x0, y0 = q.y0, x1 = q.x1, y1 = q.y1, xm = (x0 + x1) / 2, ym = (y0 + y1) / 2; + if (child = node[0]) quads.push(new Quad(child, x0, y0, xm, ym)); + if (child = node[1]) quads.push(new Quad(child, xm, y0, x1, ym)); + if (child = node[2]) quads.push(new Quad(child, x0, ym, xm, y1)); + if (child = node[3]) quads.push(new Quad(child, xm, ym, x1, y1)); + } + next.push(q); + } + while (q = next.pop()) { + callback(q.node, q.x0, q.y0, q.x1, q.y1); + } + return this; } - /*--------------------------------------------------------------------------*/ + function defaultX(d) { + return d[0]; + } - /** - * Checks if a given `target` element is present in a `collection` using strict - * equality for comparisons, i.e. `===`. If `fromIndex` is negative, it is used - * as the offset from the end of the collection. - * - * @static - * @memberOf _ - * @alias include - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Mixed} target The value to check for. - * @param {Number} [fromIndex=0] The index to search from. - * @returns {Boolean} Returns `true` if the `target` element is found, else `false`. - * @example - * - * _.contains([1, 2, 3], 1); - * // => true - * - * _.contains([1, 2, 3], 1, 2); - * // => false - * - * _.contains({ 'name': 'moe', 'age': 40 }, 'moe'); - * // => true - * - * _.contains('curly', 'ur'); - * // => true - */ - function contains(collection, target, fromIndex) { - var index = -1, - length = collection ? collection.length : 0, - result = false; + function tree_x(_) { + return arguments.length ? (this._x = _, this) : this._x; + } - fromIndex = (fromIndex < 0 ? nativeMax(0, length + fromIndex) : fromIndex) || 0; - if (typeof length == 'number') { - result = (isString(collection) - ? collection.indexOf(target, fromIndex) - : indexOf(collection, target, fromIndex) - ) > -1; - } else { - each(collection, function(value) { - if (++index >= fromIndex) { - return !(result = value === target); - } - }); - } - return result; + function defaultY(d) { + return d[1]; } - /** - * Creates an object composed of keys returned from running each element of - * `collection` through a `callback`. The corresponding value of each key is - * the number of times the key was returned by `callback`. The `callback` is - * bound to `thisArg` and invoked with three arguments; (value, index|key, collection). - * The `callback` argument may also be the name of a property to count by (e.g. 'length'). - * - * @static - * @memberOf _ - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Function|String} callback|property The function called per iteration - * or property name to count by. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Object} Returns the composed aggregate object. - * @example - * - * _.countBy([4.3, 6.1, 6.4], function(num) { return Math.floor(num); }); - * // => { '4': 1, '6': 2 } - * - * _.countBy([4.3, 6.1, 6.4], function(num) { return this.floor(num); }, Math); - * // => { '4': 1, '6': 2 } - * - * _.countBy(['one', 'two', 'three'], 'length'); - * // => { '3': 2, '5': 1 } - */ - function countBy(collection, callback, thisArg) { - var result = {}; - callback = createCallback(callback, thisArg); + function tree_y(_) { + return arguments.length ? (this._y = _, this) : this._y; + } - forEach(collection, function(value, key, collection) { - key = callback(value, key, collection); - (hasOwnProperty.call(result, key) ? result[key]++ : result[key] = 1); - }); - return result; + function quadtree(nodes, x, y) { + var tree = new Quadtree(x == null ? defaultX : x, y == null ? defaultY : y, NaN, NaN, NaN, NaN); + return nodes == null ? tree : tree.addAll(nodes); } - /** - * Checks if the `callback` returns a truthy value for **all** elements of a - * `collection`. The `callback` is bound to `thisArg` and invoked with three - * arguments; (value, index|key, collection). - * - * @static - * @memberOf _ - * @alias all - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Function} [callback=identity] The function called per iteration. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Boolean} Returns `true` if all elements pass the callback check, - * else `false`. - * @example - * - * _.every([true, 1, null, 'yes'], Boolean); - * // => false - */ - function every(collection, callback, thisArg) { - var result = true; - callback = createCallback(callback, thisArg); + function Quadtree(x, y, x0, y0, x1, y1) { + this._x = x; + this._y = y; + this._x0 = x0; + this._y0 = y0; + this._x1 = x1; + this._y1 = y1; + this._root = undefined; + } - if (isArray(collection)) { - var index = -1, - length = collection.length; + function leaf_copy(leaf) { + var copy = {data: leaf.data}, next = copy; + while (leaf = leaf.next) next = next.next = {data: leaf.data}; + return copy; + } - while (++index < length) { - if (!(result = !!callback(collection[index], index, collection))) { - break; + var treeProto = quadtree.prototype = Quadtree.prototype; + + treeProto.copy = function() { + var copy = new Quadtree(this._x, this._y, this._x0, this._y0, this._x1, this._y1), + node = this._root, + nodes, + child; + + if (!node) return copy; + + if (!node.length) return copy._root = leaf_copy(node), copy; + + nodes = [{source: node, target: copy._root = new Array(4)}]; + while (node = nodes.pop()) { + for (var i = 0; i < 4; ++i) { + if (child = node.source[i]) { + if (child.length) nodes.push({source: child, target: node.target[i] = new Array(4)}); + else node.target[i] = leaf_copy(child); } } - } else { - each(collection, function(value, index, collection) { - return (result = !!callback(value, index, collection)); - }); } - return result; + + return copy; + }; + + treeProto.add = tree_add; + treeProto.addAll = addAll; + treeProto.cover = tree_cover; + treeProto.data = tree_data; + treeProto.extent = tree_extent; + treeProto.find = tree_find; + treeProto.remove = tree_remove; + treeProto.removeAll = removeAll; + treeProto.root = tree_root; + treeProto.size = tree_size; + treeProto.visit = tree_visit; + treeProto.visitAfter = tree_visitAfter; + treeProto.x = tree_x; + treeProto.y = tree_y; + + function x(d) { + return d.x + d.vx; } - /** - * Examines each element in a `collection`, returning an array of all elements - * the `callback` returns truthy for. The `callback` is bound to `thisArg` and - * invoked with three arguments; (value, index|key, collection). - * - * @static - * @memberOf _ - * @alias select - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Function} [callback=identity] The function called per iteration. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Array} Returns a new array of elements that passed the callback check. - * @example - * - * var evens = _.filter([1, 2, 3, 4, 5, 6], function(num) { return num % 2 == 0; }); - * // => [2, 4, 6] - */ - function filter(collection, callback, thisArg) { - var result = []; - callback = createCallback(callback, thisArg); + function y(d) { + return d.y + d.vy; + } - if (isArray(collection)) { - var index = -1, - length = collection.length; + function collide(radius) { + var nodes, + radii, + strength = 1, + iterations = 1; + + if (typeof radius !== "function") radius = constant$6(radius == null ? 1 : +radius); + + function force() { + var i, n = nodes.length, + tree, + node, + xi, + yi, + ri, + ri2; + + for (var k = 0; k < iterations; ++k) { + tree = quadtree(nodes, x, y).visitAfter(prepare); + for (i = 0; i < n; ++i) { + node = nodes[i]; + ri = radii[node.index], ri2 = ri * ri; + xi = node.x + node.vx; + yi = node.y + node.vy; + tree.visit(apply); + } + } - while (++index < length) { - var value = collection[index]; - if (callback(value, index, collection)) { - result.push(value); + function apply(quad, x0, y0, x1, y1) { + var data = quad.data, rj = quad.r, r = ri + rj; + if (data) { + if (data.index > node.index) { + var x = xi - data.x - data.vx, + y = yi - data.y - data.vy, + l = x * x + y * y; + if (l < r * r) { + if (x === 0) x = jiggle(), l += x * x; + if (y === 0) y = jiggle(), l += y * y; + l = (r - (l = Math.sqrt(l))) / l * strength; + node.vx += (x *= l) * (r = (rj *= rj) / (ri2 + rj)); + node.vy += (y *= l) * r; + data.vx -= x * (r = 1 - r); + data.vy -= y * r; + } + } + return; } + return x0 > xi + r || x1 < xi - r || y0 > yi + r || y1 < yi - r; } - } else { - each(collection, function(value, index, collection) { - if (callback(value, index, collection)) { - result.push(value); + } + + function prepare(quad) { + if (quad.data) return quad.r = radii[quad.data.index]; + for (var i = quad.r = 0; i < 4; ++i) { + if (quad[i] && quad[i].r > quad.r) { + quad.r = quad[i].r; } - }); + } } - return result; - } - /** - * Examines each element in a `collection`, returning the first one the `callback` - * returns truthy for. The function returns as soon as it finds an acceptable - * element, and does not iterate over the entire `collection`. The `callback` is - * bound to `thisArg` and invoked with three arguments; (value, index|key, collection). - * - * @static - * @memberOf _ - * @alias detect - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Function} [callback=identity] The function called per iteration. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Mixed} Returns the element that passed the callback check, - * else `undefined`. - * @example - * - * var even = _.find([1, 2, 3, 4, 5, 6], function(num) { return num % 2 == 0; }); - * // => 2 - */ - function find(collection, callback, thisArg) { - var result; - callback = createCallback(callback, thisArg); + function initialize() { + if (!nodes) return; + var i, n = nodes.length, node; + radii = new Array(n); + for (i = 0; i < n; ++i) node = nodes[i], radii[node.index] = +radius(node, i, nodes); + } - forEach(collection, function(value, index, collection) { - if (callback(value, index, collection)) { - result = value; - return false; - } - }); - return result; + force.initialize = function(_) { + nodes = _; + initialize(); + }; + + force.iterations = function(_) { + return arguments.length ? (iterations = +_, force) : iterations; + }; + + force.strength = function(_) { + return arguments.length ? (strength = +_, force) : strength; + }; + + force.radius = function(_) { + return arguments.length ? (radius = typeof _ === "function" ? _ : constant$6(+_), initialize(), force) : radius; + }; + + return force; } - /** - * Iterates over a `collection`, executing the `callback` for each element in - * the `collection`. The `callback` is bound to `thisArg` and invoked with three - * arguments; (value, index|key, collection). Callbacks may exit iteration early - * by explicitly returning `false`. - * - * @static - * @memberOf _ - * @alias each - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Function} [callback=identity] The function called per iteration. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Array|Object|String} Returns `collection`. - * @example - * - * _([1, 2, 3]).forEach(alert).join(','); - * // => alerts each number and returns '1,2,3' - * - * _.forEach({ 'one': 1, 'two': 2, 'three': 3 }, alert); - * // => alerts each number value (order is not guaranteed) - */ - function forEach(collection, callback, thisArg) { - if (callback && typeof thisArg == 'undefined' && isArray(collection)) { - var index = -1, - length = collection.length; + function index(d) { + return d.index; + } - while (++index < length) { - if (callback(collection[index], index, collection) === false) { - break; + function find(nodeById, nodeId) { + var node = nodeById.get(nodeId); + if (!node) throw new Error("missing: " + nodeId); + return node; + } + + function link(links) { + var id = index, + strength = defaultStrength, + strengths, + distance = constant$6(30), + distances, + nodes, + count, + bias, + iterations = 1; + + if (links == null) links = []; + + function defaultStrength(link) { + return 1 / Math.min(count[link.source.index], count[link.target.index]); + } + + function force(alpha) { + for (var k = 0, n = links.length; k < iterations; ++k) { + for (var i = 0, link, source, target, x, y, l, b; i < n; ++i) { + link = links[i], source = link.source, target = link.target; + x = target.x + target.vx - source.x - source.vx || jiggle(); + y = target.y + target.vy - source.y - source.vy || jiggle(); + l = Math.sqrt(x * x + y * y); + l = (l - distances[i]) / l * alpha * strengths[i]; + x *= l, y *= l; + target.vx -= x * (b = bias[i]); + target.vy -= y * b; + source.vx += x * (b = 1 - b); + source.vy += y * b; } } - } else { - each(collection, callback, thisArg); } - return collection; - } - /** - * Creates an object composed of keys returned from running each element of - * `collection` through a `callback`. The corresponding value of each key is an - * array of elements passed to `callback` that returned the key. The `callback` - * is bound to `thisArg` and invoked with three arguments; (value, index|key, collection). - * The `callback` argument may also be the name of a property to group by (e.g. 'length'). - * - * @static - * @memberOf _ - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Function|String} callback|property The function called per iteration - * or property name to group by. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Object} Returns the composed aggregate object. - * @example - * - * _.groupBy([4.2, 6.1, 6.4], function(num) { return Math.floor(num); }); - * // => { '4': [4.2], '6': [6.1, 6.4] } - * - * _.groupBy([4.2, 6.1, 6.4], function(num) { return this.floor(num); }, Math); - * // => { '4': [4.2], '6': [6.1, 6.4] } - * - * _.groupBy(['one', 'two', 'three'], 'length'); - * // => { '3': ['one', 'two'], '5': ['three'] } - */ - function groupBy(collection, callback, thisArg) { - var result = {}; - callback = createCallback(callback, thisArg); + function initialize() { + if (!nodes) return; - forEach(collection, function(value, key, collection) { - key = callback(value, key, collection); - (hasOwnProperty.call(result, key) ? result[key] : result[key] = []).push(value); - }); - return result; - } + var i, + n = nodes.length, + m = links.length, + nodeById = map$1(nodes, id), + link; - /** - * Invokes the method named by `methodName` on each element in the `collection`, - * returning an array of the results of each invoked method. Additional arguments - * will be passed to each invoked method. If `methodName` is a function it will - * be invoked for, and `this` bound to, each element in the `collection`. - * - * @static - * @memberOf _ - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Function|String} methodName The name of the method to invoke or - * the function invoked per iteration. - * @param {Mixed} [arg1, arg2, ...] Arguments to invoke the method with. - * @returns {Array} Returns a new array of the results of each invoked method. - * @example - * - * _.invoke([[5, 1, 7], [3, 2, 1]], 'sort'); - * // => [[1, 5, 7], [1, 2, 3]] - * - * _.invoke([123, 456], String.prototype.split, ''); - * // => [['1', '2', '3'], ['4', '5', '6']] - */ - function invoke(collection, methodName) { - var args = slice(arguments, 2), - isFunc = typeof methodName == 'function', - result = []; + for (i = 0, count = new Array(n); i < m; ++i) { + link = links[i], link.index = i; + if (typeof link.source !== "object") link.source = find(nodeById, link.source); + if (typeof link.target !== "object") link.target = find(nodeById, link.target); + count[link.source.index] = (count[link.source.index] || 0) + 1; + count[link.target.index] = (count[link.target.index] || 0) + 1; + } - forEach(collection, function(value) { - result.push((isFunc ? methodName : value[methodName]).apply(value, args)); - }); - return result; - } + for (i = 0, bias = new Array(m); i < m; ++i) { + link = links[i], bias[i] = count[link.source.index] / (count[link.source.index] + count[link.target.index]); + } - /** - * Creates an array of values by running each element in the `collection` - * through a `callback`. The `callback` is bound to `thisArg` and invoked with - * three arguments; (value, index|key, collection). - * - * @static - * @memberOf _ - * @alias collect - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Function} [callback=identity] The function called per iteration. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Array} Returns a new array of the results of each `callback` execution. - * @example - * - * _.map([1, 2, 3], function(num) { return num * 3; }); - * // => [3, 6, 9] - * - * _.map({ 'one': 1, 'two': 2, 'three': 3 }, function(num) { return num * 3; }); - * // => [3, 6, 9] (order is not guaranteed) - */ - function map(collection, callback, thisArg) { - var index = -1, - length = collection ? collection.length : 0, - result = Array(typeof length == 'number' ? length : 0); + strengths = new Array(m), initializeStrength(); + distances = new Array(m), initializeDistance(); + } - callback = createCallback(callback, thisArg); - if (isArray(collection)) { - while (++index < length) { - result[index] = callback(collection[index], index, collection); + function initializeStrength() { + if (!nodes) return; + + for (var i = 0, n = links.length; i < n; ++i) { + strengths[i] = +strength(links[i], i, links); } - } else { - each(collection, function(value, key, collection) { - result[++index] = callback(value, key, collection); - }); } - return result; + + function initializeDistance() { + if (!nodes) return; + + for (var i = 0, n = links.length; i < n; ++i) { + distances[i] = +distance(links[i], i, links); + } + } + + force.initialize = function(_) { + nodes = _; + initialize(); + }; + + force.links = function(_) { + return arguments.length ? (links = _, initialize(), force) : links; + }; + + force.id = function(_) { + return arguments.length ? (id = _, force) : id; + }; + + force.iterations = function(_) { + return arguments.length ? (iterations = +_, force) : iterations; + }; + + force.strength = function(_) { + return arguments.length ? (strength = typeof _ === "function" ? _ : constant$6(+_), initializeStrength(), force) : strength; + }; + + force.distance = function(_) { + return arguments.length ? (distance = typeof _ === "function" ? _ : constant$6(+_), initializeDistance(), force) : distance; + }; + + return force; } - /** - * Retrieves the maximum value of an `array`. If `callback` is passed, - * it will be executed for each value in the `array` to generate the - * criterion by which the value is ranked. The `callback` is bound to - * `thisArg` and invoked with three arguments; (value, index, collection). - * - * @static - * @memberOf _ - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Function} [callback] The function called per iteration. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Mixed} Returns the maximum value. - * @example - * - * var stooges = [ - * { 'name': 'moe', 'age': 40 }, - * { 'name': 'larry', 'age': 50 }, - * { 'name': 'curly', 'age': 60 } - * ]; - * - * _.max(stooges, function(stooge) { return stooge.age; }); - * // => { 'name': 'curly', 'age': 60 }; - */ - function max(collection, callback, thisArg) { - var computed = -Infinity, - index = -1, - length = collection ? collection.length : 0, - result = computed; - - if (callback || !isArray(collection)) { - callback = !callback && isString(collection) - ? charAtCallback - : createCallback(callback, thisArg); - - each(collection, function(value, index, collection) { - var current = callback(value, index, collection); - if (current > computed) { - computed = current; - result = value; - } + function x$1(d) { + return d.x; + } + + function y$1(d) { + return d.y; + } + + var initialRadius = 10, + initialAngle = Math.PI * (3 - Math.sqrt(5)); + + function simulation(nodes) { + var simulation, + alpha = 1, + alphaMin = 0.001, + alphaDecay = 1 - Math.pow(alphaMin, 1 / 300), + alphaTarget = 0, + velocityDecay = 0.6, + forces = map$1(), + stepper = timer(step), + event = dispatch("tick", "end"); + + if (nodes == null) nodes = []; + + function step() { + tick(); + event.call("tick", simulation); + if (alpha < alphaMin) { + stepper.stop(); + event.call("end", simulation); + } + } + + function tick() { + var i, n = nodes.length, node; + + alpha += (alphaTarget - alpha) * alphaDecay; + + forces.each(function(force) { + force(alpha); }); - } else { - while (++index < length) { - if (collection[index] > result) { - result = collection[index]; - } + + for (i = 0; i < n; ++i) { + node = nodes[i]; + if (node.fx == null) node.x += node.vx *= velocityDecay; + else node.x = node.fx, node.vx = 0; + if (node.fy == null) node.y += node.vy *= velocityDecay; + else node.y = node.fy, node.vy = 0; } } - return result; - } - /** - * Retrieves the minimum value of an `array`. If `callback` is passed, - * it will be executed for each value in the `array` to generate the - * criterion by which the value is ranked. The `callback` is bound to `thisArg` - * and invoked with three arguments; (value, index, collection). - * - * @static - * @memberOf _ - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Function} [callback] The function called per iteration. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Mixed} Returns the minimum value. - * @example - * - * _.min([10, 5, 100, 2, 1000]); - * // => 2 - */ - function min(collection, callback, thisArg) { - var computed = Infinity, - index = -1, - length = collection ? collection.length : 0, - result = computed; - - if (callback || !isArray(collection)) { - callback = !callback && isString(collection) - ? charAtCallback - : createCallback(callback, thisArg); - - each(collection, function(value, index, collection) { - var current = callback(value, index, collection); - if (current < computed) { - computed = current; - result = value; + function initializeNodes() { + for (var i = 0, n = nodes.length, node; i < n; ++i) { + node = nodes[i], node.index = i; + if (isNaN(node.x) || isNaN(node.y)) { + var radius = initialRadius * Math.sqrt(i), angle = i * initialAngle; + node.x = radius * Math.cos(angle); + node.y = radius * Math.sin(angle); } - }); - } else { - while (++index < length) { - if (collection[index] < result) { - result = collection[index]; + if (isNaN(node.vx) || isNaN(node.vy)) { + node.vx = node.vy = 0; } } } - return result; - } - /** - * Retrieves the value of a specified property from all elements in - * the `collection`. - * - * @static - * @memberOf _ - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {String} property The property to pluck. - * @returns {Array} Returns a new array of property values. - * @example - * - * var stooges = [ - * { 'name': 'moe', 'age': 40 }, - * { 'name': 'larry', 'age': 50 }, - * { 'name': 'curly', 'age': 60 } - * ]; - * - * _.pluck(stooges, 'name'); - * // => ['moe', 'larry', 'curly'] - */ - function pluck(collection, property) { - return map(collection, property + ''); - } + function initializeForce(force) { + if (force.initialize) force.initialize(nodes); + return force; + } - /** - * Boils down a `collection` to a single value. The initial state of the - * reduction is `accumulator` and each successive step of it should be returned - * by the `callback`. The `callback` is bound to `thisArg` and invoked with 4 - * arguments; for arrays they are (accumulator, value, index|key, collection). - * - * @static - * @memberOf _ - * @alias foldl, inject - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Function} [callback=identity] The function called per iteration. - * @param {Mixed} [accumulator] Initial value of the accumulator. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Mixed} Returns the accumulated value. - * @example - * - * var sum = _.reduce([1, 2, 3], function(memo, num) { return memo + num; }); - * // => 6 - */ - function reduce(collection, callback, accumulator, thisArg) { - var noaccum = arguments.length < 3; - callback = createCallback(callback, thisArg, indicatorObject); + initializeNodes(); - if (isArray(collection)) { - var index = -1, - length = collection.length; + return simulation = { + tick: tick, - if (noaccum) { - accumulator = collection[++index]; - } - while (++index < length) { - accumulator = callback(accumulator, collection[index], index, collection); - } - } else { - each(collection, function(value, index, collection) { - accumulator = noaccum - ? (noaccum = false, value) - : callback(accumulator, value, index, collection) - }); - } - return accumulator; - } + restart: function() { + return stepper.restart(step), simulation; + }, - /** - * The right-associative version of `_.reduce`. - * - * @static - * @memberOf _ - * @alias foldr - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Function} [callback=identity] The function called per iteration. - * @param {Mixed} [accumulator] Initial value of the accumulator. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Mixed} Returns the accumulated value. - * @example - * - * var list = [[0, 1], [2, 3], [4, 5]]; - * var flat = _.reduceRight(list, function(a, b) { return a.concat(b); }, []); - * // => [4, 5, 2, 3, 0, 1] - */ - function reduceRight(collection, callback, accumulator, thisArg) { - var iteratee = collection, - length = collection ? collection.length : 0, - noaccum = arguments.length < 3; - - if (typeof length != 'number') { - var props = keys(collection); - length = props.length; - } else if (noCharByIndex && isString(collection)) { - iteratee = collection.split(''); - } - callback = createCallback(callback, thisArg, indicatorObject); - forEach(collection, function(value, index, collection) { - index = props ? props[--length] : --length; - accumulator = noaccum - ? (noaccum = false, iteratee[index]) - : callback(accumulator, iteratee[index], index, collection); - }); - return accumulator; - } + stop: function() { + return stepper.stop(), simulation; + }, - /** - * The opposite of `_.filter`, this method returns the values of a - * `collection` that `callback` does **not** return truthy for. - * - * @static - * @memberOf _ - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Function} [callback=identity] The function called per iteration. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Array} Returns a new array of elements that did **not** pass the - * callback check. - * @example - * - * var odds = _.reject([1, 2, 3, 4, 5, 6], function(num) { return num % 2 == 0; }); - * // => [1, 3, 5] - */ - function reject(collection, callback, thisArg) { - callback = createCallback(callback, thisArg); - return filter(collection, function(value, index, collection) { - return !callback(value, index, collection); - }); - } + nodes: function(_) { + return arguments.length ? (nodes = _, initializeNodes(), forces.each(initializeForce), simulation) : nodes; + }, - /** - * Creates an array of shuffled `array` values, using a version of the - * Fisher-Yates shuffle. See http://en.wikipedia.org/wiki/Fisher-Yates_shuffle. - * - * @static - * @memberOf _ - * @category Collections - * @param {Array|Object|String} collection The collection to shuffle. - * @returns {Array} Returns a new shuffled collection. - * @example - * - * _.shuffle([1, 2, 3, 4, 5, 6]); - * // => [4, 1, 6, 3, 5, 2] - */ - function shuffle(collection) { - var index = -1, - result = Array(collection ? collection.length : 0); + alpha: function(_) { + return arguments.length ? (alpha = +_, simulation) : alpha; + }, - forEach(collection, function(value) { - var rand = floor(nativeRandom() * (++index + 1)); - result[index] = result[rand]; - result[rand] = value; - }); - return result; - } + alphaMin: function(_) { + return arguments.length ? (alphaMin = +_, simulation) : alphaMin; + }, - /** - * Gets the size of the `collection` by returning `collection.length` for arrays - * and array-like objects or the number of own enumerable properties for objects. - * - * @static - * @memberOf _ - * @category Collections - * @param {Array|Object|String} collection The collection to inspect. - * @returns {Number} Returns `collection.length` or number of own enumerable properties. - * @example - * - * _.size([1, 2]); - * // => 2 - * - * _.size({ 'one': 1, 'two': 2, 'three': 3 }); - * // => 3 - * - * _.size('curly'); - * // => 5 - */ - function size(collection) { - var length = collection ? collection.length : 0; - return typeof length == 'number' ? length : keys(collection).length; - } + alphaDecay: function(_) { + return arguments.length ? (alphaDecay = +_, simulation) : +alphaDecay; + }, - /** - * Checks if the `callback` returns a truthy value for **any** element of a - * `collection`. The function returns as soon as it finds passing value, and - * does not iterate over the entire `collection`. The `callback` is bound to - * `thisArg` and invoked with three arguments; (value, index|key, collection). - * - * @static - * @memberOf _ - * @alias any - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Function} [callback=identity] The function called per iteration. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Boolean} Returns `true` if any element passes the callback check, - * else `false`. - * @example - * - * _.some([null, 0, 'yes', false], Boolean); - * // => true - */ - function some(collection, callback, thisArg) { - var result; - callback = createCallback(callback, thisArg); + alphaTarget: function(_) { + return arguments.length ? (alphaTarget = +_, simulation) : alphaTarget; + }, - if (isArray(collection)) { - var index = -1, - length = collection.length; + velocityDecay: function(_) { + return arguments.length ? (velocityDecay = 1 - _, simulation) : 1 - velocityDecay; + }, - while (++index < length) { - if ((result = callback(collection[index], index, collection))) { - break; + force: function(name, _) { + return arguments.length > 1 ? ((_ == null ? forces.remove(name) : forces.set(name, initializeForce(_))), simulation) : forces.get(name); + }, + + find: function(x, y, radius) { + var i = 0, + n = nodes.length, + dx, + dy, + d2, + node, + closest; + + if (radius == null) radius = Infinity; + else radius *= radius; + + for (i = 0; i < n; ++i) { + node = nodes[i]; + dx = x - node.x; + dy = y - node.y; + d2 = dx * dx + dy * dy; + if (d2 < radius) closest = node, radius = d2; } + + return closest; + }, + + on: function(name, _) { + return arguments.length > 1 ? (event.on(name, _), simulation) : event.on(name); } - } else { - each(collection, function(value, index, collection) { - return !(result = callback(value, index, collection)); - }); - } - return !!result; + }; } - /** - * Creates an array, stable sorted in ascending order by the results of - * running each element of `collection` through a `callback`. The `callback` - * is bound to `thisArg` and invoked with three arguments; (value, index|key, collection). - * The `callback` argument may also be the name of a property to sort by (e.g. 'length'). - * - * @static - * @memberOf _ - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Function|String} callback|property The function called per iteration - * or property name to sort by. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Array} Returns a new array of sorted elements. - * @example - * - * _.sortBy([1, 2, 3], function(num) { return Math.sin(num); }); - * // => [3, 1, 2] - * - * _.sortBy([1, 2, 3], function(num) { return this.sin(num); }, Math); - * // => [3, 1, 2] - * - * _.sortBy(['larry', 'brendan', 'moe'], 'length'); - * // => ['moe', 'larry', 'brendan'] - */ - function sortBy(collection, callback, thisArg) { - var result = []; - callback = createCallback(callback, thisArg); - - forEach(collection, function(value, index, collection) { - result.push({ - 'criteria': callback(value, index, collection), - 'index': index, - 'value': value - }); - }); + function manyBody() { + var nodes, + node, + alpha, + strength = constant$6(-30), + strengths, + distanceMin2 = 1, + distanceMax2 = Infinity, + theta2 = 0.81; - var length = result.length; - result.sort(compareAscending); - while (length--) { - result[length] = result[length].value; + function force(_) { + var i, n = nodes.length, tree = quadtree(nodes, x$1, y$1).visitAfter(accumulate); + for (alpha = _, i = 0; i < n; ++i) node = nodes[i], tree.visit(apply); } - return result; - } - /** - * Converts the `collection` to an array. - * - * @static - * @memberOf _ - * @category Collections - * @param {Array|Object|String} collection The collection to convert. - * @returns {Array} Returns the new converted array. - * @example - * - * (function() { return _.toArray(arguments).slice(1); })(1, 2, 3, 4); - * // => [2, 3, 4] - */ - function toArray(collection) { - var length = collection ? collection.length : 0; - if (typeof length == 'number') { - return noCharByIndex && isString(collection) - ? collection.split('') - : slice(collection); + function initialize() { + if (!nodes) return; + var i, n = nodes.length, node; + strengths = new Array(n); + for (i = 0; i < n; ++i) node = nodes[i], strengths[node.index] = +strength(node, i, nodes); } - return values(collection); - } - /** - * Examines each element in a `collection`, returning an array of all elements - * that contain the given `properties`. - * - * @static - * @memberOf _ - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Object} properties The object of property values to filter by. - * @returns {Array} Returns a new array of elements that contain the given `properties`. - * @example - * - * var stooges = [ - * { 'name': 'moe', 'age': 40 }, - * { 'name': 'larry', 'age': 50 }, - * { 'name': 'curly', 'age': 60 } - * ]; - * - * _.where(stooges, { 'age': 40 }); - * // => [{ 'name': 'moe', 'age': 40 }] - */ - function where(collection, properties) { - var props = keys(properties); - return filter(collection, function(object) { - var length = props.length; - while (length--) { - var result = object[props[length]] === properties[props[length]]; - if (!result) { - break; + function accumulate(quad) { + var strength = 0, q, c, weight = 0, x, y, i; + + // For internal nodes, accumulate forces from child quadrants. + if (quad.length) { + for (x = y = i = 0; i < 4; ++i) { + if ((q = quad[i]) && (c = Math.abs(q.value))) { + strength += q.value, weight += c, x += c * q.x, y += c * q.y; + } } + quad.x = x / weight; + quad.y = y / weight; } - return !!result; - }); - } - /*--------------------------------------------------------------------------*/ + // For leaf nodes, accumulate forces from coincident quadrants. + else { + q = quad; + q.x = q.data.x; + q.y = q.data.y; + do strength += strengths[q.data.index]; + while (q = q.next); + } - /** - * Creates an array with all falsey values of `array` removed. The values - * `false`, `null`, `0`, `""`, `undefined` and `NaN` are all falsey. - * - * @static - * @memberOf _ - * @category Arrays - * @param {Array} array The array to compact. - * @returns {Array} Returns a new filtered array. - * @example - * - * _.compact([0, 1, false, 2, '', 3]); - * // => [1, 2, 3] - */ - function compact(array) { - var index = -1, - length = array ? array.length : 0, - result = []; + quad.value = strength; + } - while (++index < length) { - var value = array[index]; - if (value) { - result.push(value); + function apply(quad, x1, _, x2) { + if (!quad.value) return true; + + var x = quad.x - node.x, + y = quad.y - node.y, + w = x2 - x1, + l = x * x + y * y; + + // Apply the Barnes-Hut approximation if possible. + // Limit forces for very close nodes; randomize direction if coincident. + if (w * w / theta2 < l) { + if (l < distanceMax2) { + if (x === 0) x = jiggle(), l += x * x; + if (y === 0) y = jiggle(), l += y * y; + if (l < distanceMin2) l = Math.sqrt(distanceMin2 * l); + node.vx += x * quad.value * alpha / l; + node.vy += y * quad.value * alpha / l; + } + return true; } - } - return result; - } - /** - * Creates an array of `array` elements not present in the other arrays - * using strict equality for comparisons, i.e. `===`. - * - * @static - * @memberOf _ - * @category Arrays - * @param {Array} array The array to process. - * @param {Array} [array1, array2, ...] Arrays to check. - * @returns {Array} Returns a new array of `array` elements not present in the - * other arrays. - * @example - * - * _.difference([1, 2, 3, 4, 5], [5, 2, 10]); - * // => [1, 3, 4] - */ - function difference(array) { - var index = -1, - length = array ? array.length : 0, - flattened = concat.apply(arrayRef, arguments), - contains = cachedContains(flattened, length), - result = []; + // Otherwise, process points directly. + else if (quad.length || l >= distanceMax2) return; - while (++index < length) { - var value = array[index]; - if (!contains(value)) { - result.push(value); + // Limit forces for very close nodes; randomize direction if coincident. + if (quad.data !== node || quad.next) { + if (x === 0) x = jiggle(), l += x * x; + if (y === 0) y = jiggle(), l += y * y; + if (l < distanceMin2) l = Math.sqrt(distanceMin2 * l); } + + do if (quad.data !== node) { + w = strengths[quad.data.index] * alpha / l; + node.vx += x * w; + node.vy += y * w; + } while (quad = quad.next); } - return result; + + force.initialize = function(_) { + nodes = _; + initialize(); + }; + + force.strength = function(_) { + return arguments.length ? (strength = typeof _ === "function" ? _ : constant$6(+_), initialize(), force) : strength; + }; + + force.distanceMin = function(_) { + return arguments.length ? (distanceMin2 = _ * _, force) : Math.sqrt(distanceMin2); + }; + + force.distanceMax = function(_) { + return arguments.length ? (distanceMax2 = _ * _, force) : Math.sqrt(distanceMax2); + }; + + force.theta = function(_) { + return arguments.length ? (theta2 = _ * _, force) : Math.sqrt(theta2); + }; + + return force; } - /** - * Gets the first element of the `array`. Pass `n` to return the first `n` - * elements of the `array`. - * - * @static - * @memberOf _ - * @alias head, take - * @category Arrays - * @param {Array} array The array to query. - * @param {Number} [n] The number of elements to return. - * @param- {Object} [guard] Internally used to allow this method to work with - * others like `_.map` without using their callback `index` argument for `n`. - * @returns {Mixed} Returns the first element, or an array of the first `n` - * elements, of `array`. - * @example - * - * _.first([5, 4, 3, 2, 1]); - * // => 5 - */ - function first(array, n, guard) { - if (array) { - var length = array.length; - return (n == null || guard) - ? array[0] - : slice(array, 0, nativeMin(nativeMax(0, n), length)); + function radial(radius, x, y) { + var nodes, + strength = constant$6(0.1), + strengths, + radiuses; + + if (typeof radius !== "function") radius = constant$6(+radius); + if (x == null) x = 0; + if (y == null) y = 0; + + function force(alpha) { + for (var i = 0, n = nodes.length; i < n; ++i) { + var node = nodes[i], + dx = node.x - x || 1e-6, + dy = node.y - y || 1e-6, + r = Math.sqrt(dx * dx + dy * dy), + k = (radiuses[i] - r) * strengths[i] * alpha / r; + node.vx += dx * k; + node.vy += dy * k; + } + } + + function initialize() { + if (!nodes) return; + var i, n = nodes.length; + strengths = new Array(n); + radiuses = new Array(n); + for (i = 0; i < n; ++i) { + radiuses[i] = +radius(nodes[i], i, nodes); + strengths[i] = isNaN(radiuses[i]) ? 0 : +strength(nodes[i], i, nodes); + } } + + force.initialize = function(_) { + nodes = _, initialize(); + }; + + force.strength = function(_) { + return arguments.length ? (strength = typeof _ === "function" ? _ : constant$6(+_), initialize(), force) : strength; + }; + + force.radius = function(_) { + return arguments.length ? (radius = typeof _ === "function" ? _ : constant$6(+_), initialize(), force) : radius; + }; + + force.x = function(_) { + return arguments.length ? (x = +_, force) : x; + }; + + force.y = function(_) { + return arguments.length ? (y = +_, force) : y; + }; + + return force; } - /** - * Flattens a nested array (the nesting can be to any depth). If `shallow` is - * truthy, `array` will only be flattened a single level. - * - * @static - * @memberOf _ - * @category Arrays - * @param {Array} array The array to compact. - * @param {Boolean} shallow A flag to indicate only flattening a single level. - * @returns {Array} Returns a new flattened array. - * @example - * - * _.flatten([1, [2], [3, [[4]]]]); - * // => [1, 2, 3, 4]; - * - * _.flatten([1, [2], [3, [[4]]]], true); - * // => [1, 2, 3, [[4]]]; - */ - function flatten(array, shallow) { - var index = -1, - length = array ? array.length : 0, - result = []; + function x$2(x) { + var strength = constant$6(0.1), + nodes, + strengths, + xz; - while (++index < length) { - var value = array[index]; + if (typeof x !== "function") x = constant$6(x == null ? 0 : +x); - // recursively flatten arrays (susceptible to call stack limits) - if (isArray(value)) { - push.apply(result, shallow ? value : flatten(value)); - } else { - result.push(value); + function force(alpha) { + for (var i = 0, n = nodes.length, node; i < n; ++i) { + node = nodes[i], node.vx += (xz[i] - node.x) * strengths[i] * alpha; } } - return result; + + function initialize() { + if (!nodes) return; + var i, n = nodes.length; + strengths = new Array(n); + xz = new Array(n); + for (i = 0; i < n; ++i) { + strengths[i] = isNaN(xz[i] = +x(nodes[i], i, nodes)) ? 0 : +strength(nodes[i], i, nodes); + } + } + + force.initialize = function(_) { + nodes = _; + initialize(); + }; + + force.strength = function(_) { + return arguments.length ? (strength = typeof _ === "function" ? _ : constant$6(+_), initialize(), force) : strength; + }; + + force.x = function(_) { + return arguments.length ? (x = typeof _ === "function" ? _ : constant$6(+_), initialize(), force) : x; + }; + + return force; } - /** - * Gets the index at which the first occurrence of `value` is found using - * strict equality for comparisons, i.e. `===`. If the `array` is already - * sorted, passing `true` for `fromIndex` will run a faster binary search. - * - * @static - * @memberOf _ - * @category Arrays - * @param {Array} array The array to search. - * @param {Mixed} value The value to search for. - * @param {Boolean|Number} [fromIndex=0] The index to search from or `true` to - * perform a binary search on a sorted `array`. - * @returns {Number} Returns the index of the matched value or `-1`. - * @example - * - * _.indexOf([1, 2, 3, 1, 2, 3], 2); - * // => 1 - * - * _.indexOf([1, 2, 3, 1, 2, 3], 2, 3); - * // => 4 - * - * _.indexOf([1, 1, 2, 2, 3, 3], 2, true); - * // => 2 - */ - function indexOf(array, value, fromIndex) { - var index = -1, - length = array ? array.length : 0; + function y$2(y) { + var strength = constant$6(0.1), + nodes, + strengths, + yz; + + if (typeof y !== "function") y = constant$6(y == null ? 0 : +y); - if (typeof fromIndex == 'number') { - index = (fromIndex < 0 ? nativeMax(0, length + fromIndex) : fromIndex || 0) - 1; - } else if (fromIndex) { - index = sortedIndex(array, value); - return array[index] === value ? index : -1; + function force(alpha) { + for (var i = 0, n = nodes.length, node; i < n; ++i) { + node = nodes[i], node.vy += (yz[i] - node.y) * strengths[i] * alpha; + } } - while (++index < length) { - if (array[index] === value) { - return index; + + function initialize() { + if (!nodes) return; + var i, n = nodes.length; + strengths = new Array(n); + yz = new Array(n); + for (i = 0; i < n; ++i) { + strengths[i] = isNaN(yz[i] = +y(nodes[i], i, nodes)) ? 0 : +strength(nodes[i], i, nodes); } } - return -1; - } - /** - * Gets all but the last element of `array`. Pass `n` to exclude the last `n` - * elements from the result. - * - * @static - * @memberOf _ - * @category Arrays - * @param {Array} array The array to query. - * @param {Number} [n=1] The number of elements to exclude. - * @param- {Object} [guard] Internally used to allow this method to work with - * others like `_.map` without using their callback `index` argument for `n`. - * @returns {Array} Returns all but the last element, or `n` elements, of `array`. - * @example - * - * _.initial([3, 2, 1]); - * // => [3, 2] - */ - function initial(array, n, guard) { - if (!array) { - return []; - } - var length = array.length; - n = n == null || guard ? 1 : n || 0; - return slice(array, 0, nativeMin(nativeMax(0, length - n), length)); + force.initialize = function(_) { + nodes = _; + initialize(); + }; + + force.strength = function(_) { + return arguments.length ? (strength = typeof _ === "function" ? _ : constant$6(+_), initialize(), force) : strength; + }; + + force.y = function(_) { + return arguments.length ? (y = typeof _ === "function" ? _ : constant$6(+_), initialize(), force) : y; + }; + + return force; } - /** - * Computes the intersection of all the passed-in arrays using strict equality - * for comparisons, i.e. `===`. - * - * @static - * @memberOf _ - * @category Arrays - * @param {Array} [array1, array2, ...] Arrays to process. - * @returns {Array} Returns a new array of unique elements that are present - * in **all** of the arrays. - * @example - * - * _.intersection([1, 2, 3], [101, 2, 1, 10], [2, 1]); - * // => [1, 2] - */ - function intersection(array) { - var args = arguments, - argsLength = args.length, - cache = { '0': {} }, - index = -1, - length = array ? array.length : 0, - isLarge = length >= 100, - result = [], - seen = result; + // Computes the decimal coefficient and exponent of the specified number x with + // significant digits p, where x is positive and p is in [1, 21] or undefined. + // For example, formatDecimal(1.23) returns ["123", 0]. + function formatDecimal(x, p) { + if ((i = (x = p ? x.toExponential(p - 1) : x.toExponential()).indexOf("e")) < 0) return null; // NaN, ±Infinity + var i, coefficient = x.slice(0, i); - outer: - while (++index < length) { - var value = array[index]; - if (isLarge) { - var key = value + ''; - var inited = hasOwnProperty.call(cache[0], key) - ? !(seen = cache[0][key]) - : (seen = cache[0][key] = []); - } - if (inited || indexOf(seen, value) < 0) { - if (isLarge) { - seen.push(value); - } - var argsIndex = argsLength; - while (--argsIndex) { - if (!(cache[argsIndex] || (cache[argsIndex] = cachedContains(args[argsIndex], 0, 100)))(value)) { - continue outer; - } - } - result.push(value); - } - } - return result; + // The string returned by toExponential either has the form \d\.\d+e[-+]\d+ + // (e.g., 1.2e+3) or the form \de[-+]\d+ (e.g., 1e+3). + return [ + coefficient.length > 1 ? coefficient[0] + coefficient.slice(2) : coefficient, + +x.slice(i + 1) + ]; } - /** - * Gets the last element of the `array`. Pass `n` to return the last `n` - * elements of the `array`. - * - * @static - * @memberOf _ - * @category Arrays - * @param {Array} array The array to query. - * @param {Number} [n] The number of elements to return. - * @param- {Object} [guard] Internally used to allow this method to work with - * others like `_.map` without using their callback `index` argument for `n`. - * @returns {Mixed} Returns the last element, or an array of the last `n` - * elements, of `array`. - * @example - * - * _.last([3, 2, 1]); - * // => 1 - */ - function last(array, n, guard) { - if (array) { - var length = array.length; - return (n == null || guard) ? array[length - 1] : slice(array, nativeMax(0, length - n)); - } + function exponent$1(x) { + return x = formatDecimal(Math.abs(x)), x ? x[1] : NaN; } - /** - * Gets the index at which the last occurrence of `value` is found using strict - * equality for comparisons, i.e. `===`. If `fromIndex` is negative, it is used - * as the offset from the end of the collection. - * - * @static - * @memberOf _ - * @category Arrays - * @param {Array} array The array to search. - * @param {Mixed} value The value to search for. - * @param {Number} [fromIndex=array.length-1] The index to search from. - * @returns {Number} Returns the index of the matched value or `-1`. - * @example - * - * _.lastIndexOf([1, 2, 3, 1, 2, 3], 2); - * // => 4 - * - * _.lastIndexOf([1, 2, 3, 1, 2, 3], 2, 3); - * // => 1 - */ - function lastIndexOf(array, value, fromIndex) { - var index = array ? array.length : 0; - if (typeof fromIndex == 'number') { - index = (fromIndex < 0 ? nativeMax(0, index + fromIndex) : nativeMin(fromIndex, index - 1)) + 1; - } - while (index--) { - if (array[index] === value) { - return index; + function formatGroup(grouping, thousands) { + return function(value, width) { + var i = value.length, + t = [], + j = 0, + g = grouping[0], + length = 0; + + while (i > 0 && g > 0) { + if (length + g + 1 > width) g = Math.max(1, width - length); + t.push(value.substring(i -= g, i + g)); + if ((length += g + 1) > width) break; + g = grouping[j = (j + 1) % grouping.length]; } - } - return -1; - } - /** - * Creates an object composed from arrays of `keys` and `values`. Pass either - * a single two dimensional array, i.e. `[[key1, value1], [key2, value2]]`, or - * two arrays, one of `keys` and one of corresponding `values`. - * - * @static - * @memberOf _ - * @category Arrays - * @param {Array} keys The array of keys. - * @param {Array} [values=[]] The array of values. - * @returns {Object} Returns an object composed of the given keys and - * corresponding values. - * @example - * - * _.object(['moe', 'larry', 'curly'], [30, 40, 50]); - * // => { 'moe': 30, 'larry': 40, 'curly': 50 } - */ - function object(keys, values) { - var index = -1, - length = keys ? keys.length : 0, - result = {}; + return t.reverse().join(thousands); + }; + } - while (++index < length) { - var key = keys[index]; - if (values) { - result[key] = values[index]; - } else { - result[key[0]] = key[1]; - } - } - return result; + function formatNumerals(numerals) { + return function(value) { + return value.replace(/[0-9]/g, function(i) { + return numerals[+i]; + }); + }; } - /** - * Creates an array of numbers (positive and/or negative) progressing from - * `start` up to but not including `stop`. This method is a port of Python's - * `range()` function. See http://docs.python.org/library/functions.html#range. - * - * @static - * @memberOf _ - * @category Arrays - * @param {Number} [start=0] The start of the range. - * @param {Number} end The end of the range. - * @param {Number} [step=1] The value to increment or descrement by. - * @returns {Array} Returns a new range array. - * @example - * - * _.range(10); - * // => [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] - * - * _.range(1, 11); - * // => [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] - * - * _.range(0, 30, 5); - * // => [0, 5, 10, 15, 20, 25] - * - * _.range(0, -10, -1); - * // => [0, -1, -2, -3, -4, -5, -6, -7, -8, -9] - * - * _.range(0); - * // => [] - */ - function range(start, end, step) { - start = +start || 0; - step = +step || 1; + function formatDefault(x, p) { + x = x.toPrecision(p); - if (end == null) { - end = start; - start = 0; + out: for (var n = x.length, i = 1, i0 = -1, i1; i < n; ++i) { + switch (x[i]) { + case ".": i0 = i1 = i; break; + case "0": if (i0 === 0) i0 = i; i1 = i; break; + case "e": break out; + default: if (i0 > 0) i0 = 0; break; + } } - // use `Array(length)` so V8 will avoid the slower "dictionary" mode - // http://youtu.be/XAqIpGU8ZZk#t=17m25s - var index = -1, - length = nativeMax(0, ceil((end - start) / step)), - result = Array(length); - while (++index < length) { - result[index] = start; - start += step; - } - return result; + return i0 > 0 ? x.slice(0, i0) + x.slice(i1 + 1) : x; } - /** - * The opposite of `_.initial`, this method gets all but the first value of - * `array`. Pass `n` to exclude the first `n` values from the result. - * - * @static - * @memberOf _ - * @alias drop, tail - * @category Arrays - * @param {Array} array The array to query. - * @param {Number} [n=1] The number of elements to exclude. - * @param- {Object} [guard] Internally used to allow this method to work with - * others like `_.map` without using their callback `index` argument for `n`. - * @returns {Array} Returns all but the first element, or `n` elements, of `array`. - * @example - * - * _.rest([3, 2, 1]); - * // => [2, 1] - */ - function rest(array, n, guard) { - return slice(array, (n == null || guard) ? 1 : nativeMax(0, n)); + var prefixExponent; + + function formatPrefixAuto(x, p) { + var d = formatDecimal(x, p); + if (!d) return x + ""; + var coefficient = d[0], + exponent = d[1], + i = exponent - (prefixExponent = Math.max(-8, Math.min(8, Math.floor(exponent / 3))) * 3) + 1, + n = coefficient.length; + return i === n ? coefficient + : i > n ? coefficient + new Array(i - n + 1).join("0") + : i > 0 ? coefficient.slice(0, i) + "." + coefficient.slice(i) + : "0." + new Array(1 - i).join("0") + formatDecimal(x, Math.max(0, p + i - 1))[0]; // less than 1y! } - /** - * Uses a binary search to determine the smallest index at which the `value` - * should be inserted into `array` in order to maintain the sort order of the - * sorted `array`. If `callback` is passed, it will be executed for `value` and - * each element in `array` to compute their sort ranking. The `callback` is - * bound to `thisArg` and invoked with one argument; (value). The `callback` - * argument may also be the name of a property to order by. - * - * @static - * @memberOf _ - * @category Arrays - * @param {Array} array The array to iterate over. - * @param {Mixed} value The value to evaluate. - * @param {Function|String} [callback=identity|property] The function called - * per iteration or property name to order by. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Number} Returns the index at which the value should be inserted - * into `array`. - * @example - * - * _.sortedIndex([20, 30, 50], 40); - * // => 2 - * - * _.sortedIndex([{ 'x': 20 }, { 'x': 30 }, { 'x': 50 }], { 'x': 40 }, 'x'); - * // => 2 - * - * var dict = { - * 'wordToNumber': { 'twenty': 20, 'thirty': 30, 'fourty': 40, 'fifty': 50 } - * }; - * - * _.sortedIndex(['twenty', 'thirty', 'fifty'], 'fourty', function(word) { - * return dict.wordToNumber[word]; - * }); - * // => 2 - * - * _.sortedIndex(['twenty', 'thirty', 'fifty'], 'fourty', function(word) { - * return this.wordToNumber[word]; - * }, dict); - * // => 2 - */ - function sortedIndex(array, value, callback, thisArg) { - var low = 0, - high = array ? array.length : low; + function formatRounded(x, p) { + var d = formatDecimal(x, p); + if (!d) return x + ""; + var coefficient = d[0], + exponent = d[1]; + return exponent < 0 ? "0." + new Array(-exponent).join("0") + coefficient + : coefficient.length > exponent + 1 ? coefficient.slice(0, exponent + 1) + "." + coefficient.slice(exponent + 1) + : coefficient + new Array(exponent - coefficient.length + 2).join("0"); + } + + var formatTypes = { + "": formatDefault, + "%": function(x, p) { return (x * 100).toFixed(p); }, + "b": function(x) { return Math.round(x).toString(2); }, + "c": function(x) { return x + ""; }, + "d": function(x) { return Math.round(x).toString(10); }, + "e": function(x, p) { return x.toExponential(p); }, + "f": function(x, p) { return x.toFixed(p); }, + "g": function(x, p) { return x.toPrecision(p); }, + "o": function(x) { return Math.round(x).toString(8); }, + "p": function(x, p) { return formatRounded(x * 100, p); }, + "r": formatRounded, + "s": formatPrefixAuto, + "X": function(x) { return Math.round(x).toString(16).toUpperCase(); }, + "x": function(x) { return Math.round(x).toString(16); } + }; - // explicitly reference `identity` for better inlining in Firefox - callback = callback ? createCallback(callback, thisArg) : identity; - value = callback(value); + // [[fill]align][sign][symbol][0][width][,][.precision][type] + var re = /^(?:(.)?([<>=^]))?([+\-\( ])?([$#])?(0)?(\d+)?(,)?(\.\d+)?([a-z%])?$/i; - while (low < high) { - var mid = (low + high) >>> 1; - callback(array[mid]) < value - ? low = mid + 1 - : high = mid; - } - return low; + function formatSpecifier(specifier) { + return new FormatSpecifier(specifier); } - /** - * Computes the union of the passed-in arrays using strict equality for - * comparisons, i.e. `===`. - * - * @static - * @memberOf _ - * @category Arrays - * @param {Array} [array1, array2, ...] Arrays to process. - * @returns {Array} Returns a new array of unique values, in order, that are - * present in one or more of the arrays. - * @example - * - * _.union([1, 2, 3], [101, 2, 1, 10], [2, 1]); - * // => [1, 2, 3, 101, 10] - */ - function union() { - return uniq(concat.apply(arrayRef, arguments)); + formatSpecifier.prototype = FormatSpecifier.prototype; // instanceof + + function FormatSpecifier(specifier) { + if (!(match = re.exec(specifier))) throw new Error("invalid format: " + specifier); + + var match, + fill = match[1] || " ", + align = match[2] || ">", + sign = match[3] || "-", + symbol = match[4] || "", + zero = !!match[5], + width = match[6] && +match[6], + comma = !!match[7], + precision = match[8] && +match[8].slice(1), + type = match[9] || ""; + + // The "n" type is an alias for ",g". + if (type === "n") comma = true, type = "g"; + + // Map invalid types to the default format. + else if (!formatTypes[type]) type = ""; + + // If zero fill is specified, padding goes after sign and before digits. + if (zero || (fill === "0" && align === "=")) zero = true, fill = "0", align = "="; + + this.fill = fill; + this.align = align; + this.sign = sign; + this.symbol = symbol; + this.zero = zero; + this.width = width; + this.comma = comma; + this.precision = precision; + this.type = type; } - /** - * Creates a duplicate-value-free version of the `array` using strict equality - * for comparisons, i.e. `===`. If the `array` is already sorted, passing `true` - * for `isSorted` will run a faster algorithm. If `callback` is passed, each - * element of `array` is passed through a callback` before uniqueness is computed. - * The `callback` is bound to `thisArg` and invoked with three arguments; (value, index, array). - * - * @static - * @memberOf _ - * @alias unique - * @category Arrays - * @param {Array} array The array to process. - * @param {Boolean} [isSorted=false] A flag to indicate that the `array` is already sorted. - * @param {Function} [callback=identity] The function called per iteration. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Array} Returns a duplicate-value-free array. - * @example - * - * _.uniq([1, 2, 1, 3, 1]); - * // => [1, 2, 3] - * - * _.uniq([1, 1, 2, 2, 3], true); - * // => [1, 2, 3] - * - * _.uniq([1, 2, 1.5, 3, 2.5], function(num) { return Math.floor(num); }); - * // => [1, 2, 3] - * - * _.uniq([1, 2, 1.5, 3, 2.5], function(num) { return this.floor(num); }, Math); - * // => [1, 2, 3] - */ - function uniq(array, isSorted, callback, thisArg) { - var index = -1, - length = array ? array.length : 0, - result = [], - seen = result; + FormatSpecifier.prototype.toString = function() { + return this.fill + + this.align + + this.sign + + this.symbol + + (this.zero ? "0" : "") + + (this.width == null ? "" : Math.max(1, this.width | 0)) + + (this.comma ? "," : "") + + (this.precision == null ? "" : "." + Math.max(0, this.precision | 0)) + + this.type; + }; - // juggle arguments - if (typeof isSorted == 'function') { - thisArg = callback; - callback = isSorted; - isSorted = false; - } - // init value cache for large arrays - var isLarge = !isSorted && length >= 75; - if (isLarge) { - var cache = {}; - } - if (callback) { - seen = []; - callback = createCallback(callback, thisArg); - } - while (++index < length) { - var value = array[index], - computed = callback ? callback(value, index, array) : value; + function identity$3(x) { + return x; + } - if (isLarge) { - var key = computed + ''; - var inited = hasOwnProperty.call(cache, key) - ? !(seen = cache[key]) - : (seen = cache[key] = []); - } - if (isSorted - ? !index || seen[seen.length - 1] !== computed - : inited || indexOf(seen, computed) < 0 - ) { - if (callback || isLarge) { - seen.push(computed); + var prefixes = ["y","z","a","f","p","n","µ","m","","k","M","G","T","P","E","Z","Y"]; + + function formatLocale(locale) { + var group = locale.grouping && locale.thousands ? formatGroup(locale.grouping, locale.thousands) : identity$3, + currency = locale.currency, + decimal = locale.decimal, + numerals = locale.numerals ? formatNumerals(locale.numerals) : identity$3, + percent = locale.percent || "%"; + + function newFormat(specifier) { + specifier = formatSpecifier(specifier); + + var fill = specifier.fill, + align = specifier.align, + sign = specifier.sign, + symbol = specifier.symbol, + zero = specifier.zero, + width = specifier.width, + comma = specifier.comma, + precision = specifier.precision, + type = specifier.type; + + // Compute the prefix and suffix. + // For SI-prefix, the suffix is lazily computed. + var prefix = symbol === "$" ? currency[0] : symbol === "#" && /[boxX]/.test(type) ? "0" + type.toLowerCase() : "", + suffix = symbol === "$" ? currency[1] : /[%p]/.test(type) ? percent : ""; + + // What format function should we use? + // Is this an integer type? + // Can this type generate exponential notation? + var formatType = formatTypes[type], + maybeSuffix = !type || /[defgprs%]/.test(type); + + // Set the default precision if not specified, + // or clamp the specified precision to the supported range. + // For significant precision, it must be in [1, 21]. + // For fixed precision, it must be in [0, 20]. + precision = precision == null ? (type ? 6 : 12) + : /[gprs]/.test(type) ? Math.max(1, Math.min(21, precision)) + : Math.max(0, Math.min(20, precision)); + + function format(value) { + var valuePrefix = prefix, + valueSuffix = suffix, + i, n, c; + + if (type === "c") { + valueSuffix = formatType(value) + valueSuffix; + value = ""; + } else { + value = +value; + + // Perform the initial formatting. + var valueNegative = value < 0; + value = formatType(Math.abs(value), precision); + + // If a negative value rounds to zero during formatting, treat as positive. + if (valueNegative && +value === 0) valueNegative = false; + + // Compute the prefix and suffix. + valuePrefix = (valueNegative ? (sign === "(" ? sign : "-") : sign === "-" || sign === "(" ? "" : sign) + valuePrefix; + valueSuffix = (type === "s" ? prefixes[8 + prefixExponent / 3] : "") + valueSuffix + (valueNegative && sign === "(" ? ")" : ""); + + // Break the formatted value into the integer “value” part that can be + // grouped, and fractional or exponential “suffix” part that is not. + if (maybeSuffix) { + i = -1, n = value.length; + while (++i < n) { + if (c = value.charCodeAt(i), 48 > c || c > 57) { + valueSuffix = (c === 46 ? decimal + value.slice(i + 1) : value.slice(i)) + valueSuffix; + value = value.slice(0, i); + break; + } + } + } } - result.push(value); - } - } - return result; - } - /** - * Creates an array with all occurrences of the passed values removed using - * strict equality for comparisons, i.e. `===`. - * - * @static - * @memberOf _ - * @category Arrays - * @param {Array} array The array to filter. - * @param {Mixed} [value1, value2, ...] Values to remove. - * @returns {Array} Returns a new filtered array. - * @example - * - * _.without([1, 2, 1, 0, 3, 1, 4], 0, 1); - * // => [2, 3, 4] - */ - function without(array) { - var index = -1, - length = array ? array.length : 0, - contains = cachedContains(arguments, 1, 20), - result = []; + // If the fill character is not "0", grouping is applied before padding. + if (comma && !zero) value = group(value, Infinity); - while (++index < length) { - var value = array[index]; - if (!contains(value)) { - result.push(value); + // Compute the padding. + var length = valuePrefix.length + value.length + valueSuffix.length, + padding = length < width ? new Array(width - length + 1).join(fill) : ""; + + // If the fill character is "0", grouping is applied after padding. + if (comma && zero) value = group(padding + value, padding.length ? width - valueSuffix.length : Infinity), padding = ""; + + // Reconstruct the final output based on the desired alignment. + switch (align) { + case "<": value = valuePrefix + value + valueSuffix + padding; break; + case "=": value = valuePrefix + padding + value + valueSuffix; break; + case "^": value = padding.slice(0, length = padding.length >> 1) + valuePrefix + value + valueSuffix + padding.slice(length); break; + default: value = padding + valuePrefix + value + valueSuffix; break; + } + + return numerals(value); } - } - return result; - } - /** - * Groups the elements of each array at their corresponding indexes. Useful for - * separate data sources that are coordinated through matching array indexes. - * For a matrix of nested arrays, `_.zip.apply(...)` can transpose the matrix - * in a similar fashion. - * - * @static - * @memberOf _ - * @category Arrays - * @param {Array} [array1, array2, ...] Arrays to process. - * @returns {Array} Returns a new array of grouped elements. - * @example - * - * _.zip(['moe', 'larry', 'curly'], [30, 40, 50], [true, false, false]); - * // => [['moe', 30, true], ['larry', 40, false], ['curly', 50, false]] - */ - function zip(array) { - var index = -1, - length = array ? max(pluck(arguments, 'length')) : 0, - result = Array(length); + format.toString = function() { + return specifier + ""; + }; - while (++index < length) { - result[index] = pluck(arguments, index); + return format; } - return result; - } - - /*--------------------------------------------------------------------------*/ - /** - * Creates a function that is restricted to executing `func` only after it is - * called `n` times. The `func` is executed with the `this` binding of the - * created function. - * - * @static - * @memberOf _ - * @category Functions - * @param {Number} n The number of times the function must be called before - * it is executed. - * @param {Function} func The function to restrict. - * @returns {Function} Returns the new restricted function. - * @example - * - * var renderNotes = _.after(notes.length, render); - * _.forEach(notes, function(note) { - * note.asyncSave({ 'success': renderNotes }); - * }); - * // `renderNotes` is run once, after all notes have saved - */ - function after(n, func) { - if (n < 1) { - return func(); + function formatPrefix(specifier, value) { + var f = newFormat((specifier = formatSpecifier(specifier), specifier.type = "f", specifier)), + e = Math.max(-8, Math.min(8, Math.floor(exponent$1(value) / 3))) * 3, + k = Math.pow(10, -e), + prefix = prefixes[8 + e / 3]; + return function(value) { + return f(k * value) + prefix; + }; } - return function() { - if (--n < 1) { - return func.apply(this, arguments); - } + + return { + format: newFormat, + formatPrefix: formatPrefix }; } - /** - * Creates a function that, when called, invokes `func` with the `this` - * binding of `thisArg` and prepends any additional `bind` arguments to those - * passed to the bound function. - * - * @static - * @memberOf _ - * @category Functions - * @param {Function} func The function to bind. - * @param {Mixed} [thisArg] The `this` binding of `func`. - * @param {Mixed} [arg1, arg2, ...] Arguments to be partially applied. - * @returns {Function} Returns the new bound function. - * @example - * - * var func = function(greeting) { - * return greeting + ' ' + this.name; - * }; - * - * func = _.bind(func, { 'name': 'moe' }, 'hi'); - * func(); - * // => 'hi moe' - */ - function bind(func, thisArg) { - // use `Function#bind` if it exists and is fast - // (in V8 `Function#bind` is slower except when partially applied) - return isBindFast || (nativeBind && arguments.length > 2) - ? nativeBind.call.apply(nativeBind, arguments) - : createBound(func, thisArg, slice(arguments, 2)); + var locale; + var format; + var formatPrefix; + + defaultLocale({ + decimal: ".", + thousands: ",", + grouping: [3], + currency: ["$", ""] + }); + + function defaultLocale(definition) { + locale = formatLocale(definition); + format = locale.format; + formatPrefix = locale.formatPrefix; + return locale; } - /** - * Binds methods on `object` to `object`, overwriting the existing method. - * If no method names are provided, all the function properties of `object` - * will be bound. - * - * @static - * @memberOf _ - * @category Functions - * @param {Object} object The object to bind and assign the bound methods to. - * @param {String} [methodName1, methodName2, ...] Method names on the object to bind. - * @returns {Object} Returns `object`. - * @example - * - * var buttonView = { - * 'label': 'lodash', - * 'onClick': function() { alert('clicked: ' + this.label); } - * }; - * - * _.bindAll(buttonView); - * jQuery('#lodash_button').on('click', buttonView.onClick); - * // => When the button is clicked, `this.label` will have the correct value - */ - function bindAll(object) { - var funcs = arguments, - index = funcs.length > 1 ? 0 : (funcs = functions(object), -1), - length = funcs.length; + function precisionFixed(step) { + return Math.max(0, -exponent$1(Math.abs(step))); + } - while (++index < length) { - var key = funcs[index]; - object[key] = bind(object[key], object); - } - return object; + function precisionPrefix(step, value) { + return Math.max(0, Math.max(-8, Math.min(8, Math.floor(exponent$1(value) / 3))) * 3 - exponent$1(Math.abs(step))); } - /** - * Creates a function that, when called, invokes the method at `object[key]` - * and prepends any additional `bindKey` arguments to those passed to the bound - * function. This method differs from `_.bind` by allowing bound functions to - * reference methods that will be redefined or don't yet exist. - * See http://michaux.ca/articles/lazy-function-definition-pattern. - * - * @static - * @memberOf _ - * @category Functions - * @param {Object} object The object the method belongs to. - * @param {String} key The key of the method. - * @param {Mixed} [arg1, arg2, ...] Arguments to be partially applied. - * @returns {Function} Returns the new bound function. - * @example - * - * var object = { - * 'name': 'moe', - * 'greet': function(greeting) { - * return greeting + ' ' + this.name; - * } - * }; - * - * var func = _.bindKey(object, 'greet', 'hi'); - * func(); - * // => 'hi moe' - * - * object.greet = function(greeting) { - * return greeting + ', ' + this.name + '!'; - * }; - * - * func(); - * // => 'hi, moe!' - */ - function bindKey(object, key) { - return createBound(object, key, slice(arguments, 2)); + function precisionRound(step, max) { + step = Math.abs(step), max = Math.abs(max) - step; + return Math.max(0, exponent$1(max) - exponent$1(step)) + 1; } - /** - * Creates a function that is the composition of the passed functions, - * where each function consumes the return value of the function that follows. - * In math terms, composing the functions `f()`, `g()`, and `h()` produces `f(g(h()))`. - * Each function is executed with the `this` binding of the composed function. - * - * @static - * @memberOf _ - * @category Functions - * @param {Function} [func1, func2, ...] Functions to compose. - * @returns {Function} Returns the new composed function. - * @example - * - * var greet = function(name) { return 'hi: ' + name; }; - * var exclaim = function(statement) { return statement + '!'; }; - * var welcome = _.compose(exclaim, greet); - * welcome('moe'); - * // => 'hi: moe!' - */ - function compose() { - var funcs = arguments; - return function() { - var args = arguments, - length = funcs.length; + // Adds floating point numbers with twice the normal precision. + // Reference: J. R. Shewchuk, Adaptive Precision Floating-Point Arithmetic and + // Fast Robust Geometric Predicates, Discrete & Computational Geometry 18(3) + // 305–363 (1997). + // Code adapted from GeographicLib by Charles F. F. Karney, + // http://geographiclib.sourceforge.net/ - while (length--) { - args = [funcs[length].apply(this, args)]; - } - return args[0]; - }; + function adder() { + return new Adder; } - /** - * Creates a function that will delay the execution of `func` until after - * `wait` milliseconds have elapsed since the last time it was invoked. Pass - * `true` for `immediate` to cause debounce to invoke `func` on the leading, - * instead of the trailing, edge of the `wait` timeout. Subsequent calls to - * the debounced function will return the result of the last `func` call. - * - * @static - * @memberOf _ - * @category Functions - * @param {Function} func The function to debounce. - * @param {Number} wait The number of milliseconds to delay. - * @param {Boolean} immediate A flag to indicate execution is on the leading - * edge of the timeout. - * @returns {Function} Returns the new debounced function. - * @example - * - * var lazyLayout = _.debounce(calculateLayout, 300); - * jQuery(window).on('resize', lazyLayout); - */ - function debounce(func, wait, immediate) { - var args, - result, - thisArg, - timeoutId; + function Adder() { + this.reset(); + } - function delayed() { - timeoutId = null; - if (!immediate) { - result = func.apply(thisArg, args); - } + Adder.prototype = { + constructor: Adder, + reset: function() { + this.s = // rounded value + this.t = 0; // exact error + }, + add: function(y) { + add$1(temp, y, this.t); + add$1(this, temp.s, this.s); + if (this.s) this.t += temp.t; + else this.s = temp.t; + }, + valueOf: function() { + return this.s; } - return function() { - var isImmediate = immediate && !timeoutId; - args = arguments; - thisArg = this; + }; - clearTimeout(timeoutId); - timeoutId = setTimeout(delayed, wait); + var temp = new Adder; - if (isImmediate) { - result = func.apply(thisArg, args); - } - return result; - }; + function add$1(adder, a, b) { + var x = adder.s = a + b, + bv = x - a, + av = x - bv; + adder.t = (a - av) + (b - bv); } - /** - * Executes the `func` function after `wait` milliseconds. Additional arguments - * will be passed to `func` when it is invoked. - * - * @static - * @memberOf _ - * @category Functions - * @param {Function} func The function to delay. - * @param {Number} wait The number of milliseconds to delay execution. - * @param {Mixed} [arg1, arg2, ...] Arguments to invoke the function with. - * @returns {Number} Returns the `setTimeout` timeout id. - * @example - * - * var log = _.bind(console.log, console); - * _.delay(log, 1000, 'logged later'); - * // => 'logged later' (Appears after one second.) - */ - function delay(func, wait) { - var args = slice(arguments, 2); - return setTimeout(function() { func.apply(undefined, args); }, wait); + var epsilon$2 = 1e-6; + var epsilon2$1 = 1e-12; + var pi$3 = Math.PI; + var halfPi$2 = pi$3 / 2; + var quarterPi = pi$3 / 4; + var tau$3 = pi$3 * 2; + + var degrees$1 = 180 / pi$3; + var radians = pi$3 / 180; + + var abs = Math.abs; + var atan = Math.atan; + var atan2 = Math.atan2; + var cos$1 = Math.cos; + var ceil = Math.ceil; + var exp = Math.exp; + var log = Math.log; + var pow = Math.pow; + var sin$1 = Math.sin; + var sign = Math.sign || function(x) { return x > 0 ? 1 : x < 0 ? -1 : 0; }; + var sqrt = Math.sqrt; + var tan = Math.tan; + + function acos(x) { + return x > 1 ? 0 : x < -1 ? pi$3 : Math.acos(x); } - /** - * Defers executing the `func` function until the current call stack has cleared. - * Additional arguments will be passed to `func` when it is invoked. - * - * @static - * @memberOf _ - * @category Functions - * @param {Function} func The function to defer. - * @param {Mixed} [arg1, arg2, ...] Arguments to invoke the function with. - * @returns {Number} Returns the `setTimeout` timeout id. - * @example - * - * _.defer(function() { alert('deferred'); }); - * // returns from the function before `alert` is called - */ - function defer(func) { - var args = slice(arguments, 1); - return setTimeout(function() { func.apply(undefined, args); }, 1); + function asin(x) { + return x > 1 ? halfPi$2 : x < -1 ? -halfPi$2 : Math.asin(x); } - /** - * Creates a function that memoizes the result of `func`. If `resolver` is - * passed, it will be used to determine the cache key for storing the result - * based on the arguments passed to the memoized function. By default, the first - * argument passed to the memoized function is used as the cache key. The `func` - * is executed with the `this` binding of the memoized function. - * - * @static - * @memberOf _ - * @category Functions - * @param {Function} func The function to have its output memoized. - * @param {Function} [resolver] A function used to resolve the cache key. - * @returns {Function} Returns the new memoizing function. - * @example - * - * var fibonacci = _.memoize(function(n) { - * return n < 2 ? n : fibonacci(n - 1) + fibonacci(n - 2); - * }); - */ - function memoize(func, resolver) { - var cache = {}; - return function() { - var key = resolver ? resolver.apply(this, arguments) : arguments[0]; - return hasOwnProperty.call(cache, key) - ? cache[key] - : (cache[key] = func.apply(this, arguments)); - }; + function haversin(x) { + return (x = sin$1(x / 2)) * x; } - /** - * Creates a function that is restricted to execute `func` once. Repeat calls to - * the function will return the value of the first call. The `func` is executed - * with the `this` binding of the created function. - * - * @static - * @memberOf _ - * @category Functions - * @param {Function} func The function to restrict. - * @returns {Function} Returns the new restricted function. - * @example - * - * var initialize = _.once(createApplication); - * initialize(); - * initialize(); - * // Application is only created once. - */ - function once(func) { - var result, - ran = false; + function noop$1() {} - return function() { - if (ran) { - return result; - } - ran = true; - result = func.apply(this, arguments); + function streamGeometry(geometry, stream) { + if (geometry && streamGeometryType.hasOwnProperty(geometry.type)) { + streamGeometryType[geometry.type](geometry, stream); + } + } - // clear the `func` variable so the function may be garbage collected - func = null; - return result; - }; + var streamObjectType = { + Feature: function(object, stream) { + streamGeometry(object.geometry, stream); + }, + FeatureCollection: function(object, stream) { + var features = object.features, i = -1, n = features.length; + while (++i < n) streamGeometry(features[i].geometry, stream); + } + }; + + var streamGeometryType = { + Sphere: function(object, stream) { + stream.sphere(); + }, + Point: function(object, stream) { + object = object.coordinates; + stream.point(object[0], object[1], object[2]); + }, + MultiPoint: function(object, stream) { + var coordinates = object.coordinates, i = -1, n = coordinates.length; + while (++i < n) object = coordinates[i], stream.point(object[0], object[1], object[2]); + }, + LineString: function(object, stream) { + streamLine(object.coordinates, stream, 0); + }, + MultiLineString: function(object, stream) { + var coordinates = object.coordinates, i = -1, n = coordinates.length; + while (++i < n) streamLine(coordinates[i], stream, 0); + }, + Polygon: function(object, stream) { + streamPolygon(object.coordinates, stream); + }, + MultiPolygon: function(object, stream) { + var coordinates = object.coordinates, i = -1, n = coordinates.length; + while (++i < n) streamPolygon(coordinates[i], stream); + }, + GeometryCollection: function(object, stream) { + var geometries = object.geometries, i = -1, n = geometries.length; + while (++i < n) streamGeometry(geometries[i], stream); + } + }; + + function streamLine(coordinates, stream, closed) { + var i = -1, n = coordinates.length - closed, coordinate; + stream.lineStart(); + while (++i < n) coordinate = coordinates[i], stream.point(coordinate[0], coordinate[1], coordinate[2]); + stream.lineEnd(); } - /** - * Creates a function that, when called, invokes `func` with any additional - * `partial` arguments prepended to those passed to the new function. This - * method is similar to `bind`, except it does **not** alter the `this` binding. - * - * @static - * @memberOf _ - * @category Functions - * @param {Function} func The function to partially apply arguments to. - * @param {Mixed} [arg1, arg2, ...] Arguments to be partially applied. - * @returns {Function} Returns the new partially applied function. - * @example - * - * var greet = function(greeting, name) { return greeting + ': ' + name; }; - * var hi = _.partial(greet, 'hi'); - * hi('moe'); - * // => 'hi: moe' - */ - function partial(func) { - return createBound(func, slice(arguments, 1)); + function streamPolygon(coordinates, stream) { + var i = -1, n = coordinates.length; + stream.polygonStart(); + while (++i < n) streamLine(coordinates[i], stream, 1); + stream.polygonEnd(); } - /** - * Creates a function that, when executed, will only call the `func` - * function at most once per every `wait` milliseconds. If the throttled - * function is invoked more than once during the `wait` timeout, `func` will - * also be called on the trailing edge of the timeout. Subsequent calls to the - * throttled function will return the result of the last `func` call. - * - * @static - * @memberOf _ - * @category Functions - * @param {Function} func The function to throttle. - * @param {Number} wait The number of milliseconds to throttle executions to. - * @returns {Function} Returns the new throttled function. - * @example - * - * var throttled = _.throttle(updatePosition, 100); - * jQuery(window).on('scroll', throttled); - */ - function throttle(func, wait) { - var args, - result, - thisArg, - timeoutId, - lastCalled = 0; + function geoStream(object, stream) { + if (object && streamObjectType.hasOwnProperty(object.type)) { + streamObjectType[object.type](object, stream); + } else { + streamGeometry(object, stream); + } + } - function trailingCall() { - lastCalled = new Date; - timeoutId = null; - result = func.apply(thisArg, args); + var areaRingSum = adder(); + + var areaSum = adder(), + lambda00, + phi00, + lambda0, + cosPhi0, + sinPhi0; + + var areaStream = { + point: noop$1, + lineStart: noop$1, + lineEnd: noop$1, + polygonStart: function() { + areaRingSum.reset(); + areaStream.lineStart = areaRingStart; + areaStream.lineEnd = areaRingEnd; + }, + polygonEnd: function() { + var areaRing = +areaRingSum; + areaSum.add(areaRing < 0 ? tau$3 + areaRing : areaRing); + this.lineStart = this.lineEnd = this.point = noop$1; + }, + sphere: function() { + areaSum.add(tau$3); } - return function() { - var now = new Date, - remaining = wait - (now - lastCalled); + }; - args = arguments; - thisArg = this; + function areaRingStart() { + areaStream.point = areaPointFirst; + } - if (remaining <= 0) { - clearTimeout(timeoutId); - timeoutId = null; - lastCalled = now; - result = func.apply(thisArg, args); - } - else if (!timeoutId) { - timeoutId = setTimeout(trailingCall, remaining); - } - return result; - }; + function areaRingEnd() { + areaPoint(lambda00, phi00); } - /** - * Creates a function that passes `value` to the `wrapper` function as its - * first argument. Additional arguments passed to the function are appended - * to those passed to the `wrapper` function. The `wrapper` is executed with - * the `this` binding of the created function. - * - * @static - * @memberOf _ - * @category Functions - * @param {Mixed} value The value to wrap. - * @param {Function} wrapper The wrapper function. - * @returns {Function} Returns the new function. - * @example - * - * var hello = function(name) { return 'hello ' + name; }; - * hello = _.wrap(hello, function(func) { - * return 'before, ' + func('moe') + ', after'; - * }); - * hello(); - * // => 'before, hello moe, after' - */ - function wrap(value, wrapper) { - return function() { - var args = [value]; - push.apply(args, arguments); - return wrapper.apply(this, args); - }; + function areaPointFirst(lambda, phi) { + areaStream.point = areaPoint; + lambda00 = lambda, phi00 = phi; + lambda *= radians, phi *= radians; + lambda0 = lambda, cosPhi0 = cos$1(phi = phi / 2 + quarterPi), sinPhi0 = sin$1(phi); } - /*--------------------------------------------------------------------------*/ + function areaPoint(lambda, phi) { + lambda *= radians, phi *= radians; + phi = phi / 2 + quarterPi; // half the angular distance from south pole - /** - * Converts the characters `&`, `<`, `>`, `"`, and `'` in `string` to their - * corresponding HTML entities. - * - * @static - * @memberOf _ - * @category Utilities - * @param {String} string The string to escape. - * @returns {String} Returns the escaped string. - * @example - * - * _.escape('Moe, Larry & Curly'); - * // => 'Moe, Larry & Curly' - */ - function escape(string) { - return string == null ? '' : (string + '').replace(reUnescapedHtml, escapeHtmlChar); - } + // Spherical excess E for a spherical triangle with vertices: south pole, + // previous point, current point. Uses a formula derived from Cagnoli’s + // theorem. See Todhunter, Spherical Trig. (1871), Sec. 103, Eq. (2). + var dLambda = lambda - lambda0, + sdLambda = dLambda >= 0 ? 1 : -1, + adLambda = sdLambda * dLambda, + cosPhi = cos$1(phi), + sinPhi = sin$1(phi), + k = sinPhi0 * sinPhi, + u = cosPhi0 * cosPhi + k * cos$1(adLambda), + v = k * sdLambda * sin$1(adLambda); + areaRingSum.add(atan2(v, u)); - /** - * This function returns the first argument passed to it. - * - * @static - * @memberOf _ - * @category Utilities - * @param {Mixed} value Any value. - * @returns {Mixed} Returns `value`. - * @example - * - * var moe = { 'name': 'moe' }; - * moe === _.identity(moe); - * // => true - */ - function identity(value) { - return value; + // Advance the previous points. + lambda0 = lambda, cosPhi0 = cosPhi, sinPhi0 = sinPhi; } - /** - * Adds functions properties of `object` to the `lodash` function and chainable - * wrapper. - * - * @static - * @memberOf _ - * @category Utilities - * @param {Object} object The object of function properties to add to `lodash`. - * @example - * - * _.mixin({ - * 'capitalize': function(string) { - * return string.charAt(0).toUpperCase() + string.slice(1).toLowerCase(); - * } - * }); - * - * _.capitalize('larry'); - * // => 'Larry' - * - * _('curly').capitalize(); - * // => 'Curly' - */ - function mixin(object) { - forEach(functions(object), function(methodName) { - var func = lodash[methodName] = object[methodName]; + function d3_geoArea(object) { + areaSum.reset(); + geoStream(object, areaStream); + return areaSum * 2; + } - lodash.prototype[methodName] = function() { - var args = [this.__wrapped__]; - push.apply(args, arguments); + function spherical(cartesian) { + return [atan2(cartesian[1], cartesian[0]), asin(cartesian[2])]; + } - var result = func.apply(lodash, args); - return new lodash(result); - }; - }); + function cartesian(spherical) { + var lambda = spherical[0], phi = spherical[1], cosPhi = cos$1(phi); + return [cosPhi * cos$1(lambda), cosPhi * sin$1(lambda), sin$1(phi)]; } - /** - * Reverts the '_' variable to its previous value and returns a reference to - * the `lodash` function. - * - * @static - * @memberOf _ - * @category Utilities - * @returns {Function} Returns the `lodash` function. - * @example - * - * var lodash = _.noConflict(); - */ - function noConflict() { - window._ = oldDash; - return this; + function cartesianDot(a, b) { + return a[0] * b[0] + a[1] * b[1] + a[2] * b[2]; } - /** - * Produces a random number between `min` and `max` (inclusive). If only one - * argument is passed, a number between `0` and the given number will be returned. - * - * @static - * @memberOf _ - * @category Utilities - * @param {Number} [min=0] The minimum possible value. - * @param {Number} [max=1] The maximum possible value. - * @returns {Number} Returns a random number. - * @example - * - * _.random(0, 5); - * // => a number between 1 and 5 - * - * _.random(5); - * // => also a number between 1 and 5 - */ - function random(min, max) { - if (min == null && max == null) { - max = 1; - } - min = +min || 0; - if (max == null) { - max = min; - min = 0; - } - return min + floor(nativeRandom() * ((+max || 0) - min + 1)); + function cartesianCross(a, b) { + return [a[1] * b[2] - a[2] * b[1], a[2] * b[0] - a[0] * b[2], a[0] * b[1] - a[1] * b[0]]; } - /** - * Resolves the value of `property` on `object`. If `property` is a function - * it will be invoked and its result returned, else the property value is - * returned. If `object` is falsey, then `null` is returned. - * - * @static - * @memberOf _ - * @category Utilities - * @param {Object} object The object to inspect. - * @param {String} property The property to get the value of. - * @returns {Mixed} Returns the resolved value. - * @example - * - * var object = { - * 'cheese': 'crumpets', - * 'stuff': function() { - * return 'nonsense'; - * } - * }; - * - * _.result(object, 'cheese'); - * // => 'crumpets' - * - * _.result(object, 'stuff'); - * // => 'nonsense' - */ - function result(object, property) { - // based on Backbone's private `getValue` function - // https://github.com/documentcloud/backbone/blob/0.9.2/backbone.js#L1419-1424 - var value = object ? object[property] : null; - return isFunction(value) ? object[property]() : value; + // TODO return a + function cartesianAddInPlace(a, b) { + a[0] += b[0], a[1] += b[1], a[2] += b[2]; } - /** - * A micro-templating method that handles arbitrary delimiters, preserves - * whitespace, and correctly escapes quotes within interpolated code. - * - * Note: In the development build `_.template` utilizes sourceURLs for easier - * debugging. See http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl - * - * Note: Lo-Dash may be used in Chrome extensions by either creating a `lodash csp` - * build and avoiding `_.template` use, or loading Lo-Dash in a sandboxed page. - * See http://developer.chrome.com/trunk/extensions/sandboxingEval.html - * - * @static - * @memberOf _ - * @category Utilities - * @param {String} text The template text. - * @param {Obect} data The data object used to populate the text. - * @param {Object} options The options object. - * escape - The "escape" delimiter regexp. - * evaluate - The "evaluate" delimiter regexp. - * interpolate - The "interpolate" delimiter regexp. - * sourceURL - The sourceURL of the template's compiled source. - * variable - The data object variable name. - * - * @returns {Function|String} Returns a compiled function when no `data` object - * is given, else it returns the interpolated text. - * @example - * - * // using a compiled template - * var compiled = _.template('hello <%= name %>'); - * compiled({ 'name': 'moe' }); - * // => 'hello moe' - * - * var list = '<% _.forEach(people, function(name) { %>
  • <%= name %>
    • <% }); %>'; - * _.template(list, { 'people': ['moe', 'larry', 'curly'] }); - * // => '
  • moe
  • larry
  • curly
    • ' - * - * // using the "escape" delimiter to escape HTML in data property values - * _.template('<%- value %>', { 'value': '