1 package net.systemeD.halcyon {
3 import flash.display.*;
4 import flash.geom.Matrix;
5 import flash.geom.Point;
6 import flash.geom.Rectangle;
7 import flash.text.TextField;
8 import flash.text.TextFormat;
10 import net.systemeD.halcyon.styleparser.*;
11 import net.systemeD.halcyon.connection.*;
12 import net.systemeD.halcyon.Globals;
14 public class WayUI extends EntityUI {
17 public var pathlength:Number; // length of path
18 public var patharea:Number; // area of path
19 public var centroid_x:Number; // centroid
20 public var centroid_y:Number; // |
21 public var heading:Array=new Array(); // angle at each node
22 private var hitzone:Sprite;
23 public var nameformat:TextFormat;
25 private const NODESIZE:uint=6;
27 public function WayUI(way:Way, paint:MapPaint, interactive:Boolean=true) {
31 this.ruleset = ruleset;
32 this.interactive = interactive;
34 way.addEventListener(Connection.TAG_CHANGED, wayTagChanged);
35 way.addEventListener(Connection.WAY_NODE_ADDED, wayNodeAdded);
36 way.addEventListener(Connection.WAY_NODE_REMOVED, wayNodeRemoved);
37 way.addEventListener(Connection.WAY_REORDERED, wayReordered);
38 way.addEventListener(Connection.WAY_DELETED, wayDeleted);
39 way.addEventListener(Connection.WAY_DRAGGED, wayDragged);
40 way.addEventListener(Connection.ADDED_TO_RELATION, wayRelationAdded);
41 way.addEventListener(Connection.REMOVED_FROM_RELATION, wayRelationRemoved);
42 way.addEventListener(Connection.SUSPEND_REDRAW, suspendRedraw);
43 way.addEventListener(Connection.RESUME_REDRAW, resumeRedraw);
44 attachNodeListeners();
45 attachRelationListeners();
48 private function attachNodeListeners():void {
49 for (var i:uint = 0; i < way.length; i++ ) {
50 way.getNode(i).addEventListener(Connection.NODE_MOVED, nodeMoved);
54 private function attachRelationListeners():void {
55 var relations:Array = way.parentRelations;
56 for each(var relation:Relation in relations ) {
57 relation.addEventListener(Connection.TAG_CHANGED, relationTagChanged);
61 private function wayRelationAdded(event:RelationMemberEvent):void {
62 event.relation.addEventListener(Connection.TAG_CHANGED, relationTagChanged);
66 private function wayRelationRemoved(event:RelationMemberEvent):void {
67 event.relation.removeEventListener(Connection.TAG_CHANGED, relationTagChanged);
71 private function wayNodeAdded(event:WayNodeEvent):void {
72 event.node.addEventListener(Connection.NODE_MOVED, nodeMoved);
76 private function wayNodeRemoved(event:WayNodeEvent):void {
77 event.node.removeEventListener(Connection.NODE_MOVED, nodeMoved);
78 if (paint.nodeuis[event.node.id]) {
79 paint.nodeuis[event.node.id].redraw();
84 private function wayTagChanged(event:TagEvent):void {
87 private function relationTagChanged(event:TagEvent):void {
90 private function nodeMoved(event:NodeMovedEvent):void {
93 private function wayDeleted(event:EntityEvent):void {
96 private function wayReordered(event:EntityEvent):void {
99 private function wayDragged(event:WayDraggedEvent):void {
100 offsetSprites(event.xDelta,event.yDelta);
103 private function init():void {
106 // updateBbox(lon, lat);
107 // ** various other stuff
110 // ------------------------------------------------------------------------------------------
111 // Calculate length etc.
112 // ** this could be made scale-independent - would speed up redraw
114 public function recalculate():void {
115 var lx:Number, ly:Number, sc:Number;
116 var node:Node, latp:Number, lon:Number;
117 var cx:Number=0, cy:Number=0;
120 if (way.length==0) { return; }
122 lx = way.getNode(way.length-1).lon;
123 ly = way.getNode(way.length-1).latp;
124 for ( var i:uint = 0; i < way.length; i++ ) {
125 node = way.getNode(i);
130 if ( i>0 ) { pathlength += Math.sqrt( Math.pow(lon-lx,2)+Math.pow(latp-ly,2) ); }
131 sc = (lx*latp-lon*ly)*paint.map.scalefactor;
137 if (i>0) { heading[i-1]=Math.atan2((lon-lx),(latp-ly)); }
141 heading[way.length-1]=heading[way.length-2];
143 pathlength*=paint.map.scalefactor;
145 if (patharea!=0 && way.isArea()) {
146 centroid_x=paint.map.lon2coord(cx/patharea/6);
147 centroid_y=paint.map.latp2coord(cy/patharea/6);
148 } else if (pathlength>0) {
149 var c:Array=pointAt(0.5);
155 // ------------------------------------------------------------------------------------------
158 override public function doRedraw(sl:StyleList):Boolean {
160 if (way.length==0) { return false; }
161 if (!paint.ready) { return false; }
163 // Copy tags object, and add states
164 var tags:Object = way.getTagsCopy();
165 tags=applyStateClasses(tags);
166 if (way.isArea()) { tags[':area']='yes'; }
170 if (tags['layer']) { layer=Math.min(Math.max(tags['layer'],paint.minlayer),paint.maxlayer); }
172 // Iterate through each sublayer, drawing any styles on that layer
173 if (!sl) { sl=paint.ruleset.getStyles(this.way, tags); }
175 var multis:Array=way.findParentRelationsOfType('multipolygon','outer');
177 for each (var m:Relation in multis) {
178 inners=inners.concat(m.findMembersByRole('inner'));
180 for (var sublayer:int=10; sublayer>=0; sublayer--) {
181 if (sl.shapeStyles[sublayer]) {
182 var s:ShapeStyle=sl.shapeStyles[sublayer];
183 var stroke:Shape, fill:Shape, casing:Shape, roadname:Sprite;
184 var x0:Number=paint.map.lon2coord(way.getNode(0).lon);
185 var y0:Number=paint.map.latp2coord(way.getNode(0).latp);
189 stroke=new Shape(); addToLayer(stroke,STROKESPRITE,sublayer);
190 stroke.graphics.moveTo(x0,y0);
191 s.applyStrokeStyle(stroke.graphics);
192 if (s.dashes && s.dashes.length>0) {
193 var segments:Array=dashedLine(stroke.graphics,s.dashes);
194 if (s.line_style) { lineDecoration(stroke.graphics,s,segments); }
195 } else { solidLines(stroke.graphics,inners); }
200 if ((s.fill_color || s.fill_image) && way.findParentRelationsOfType('multipolygon','inner').length==0) {
201 fill=new Shape(); addToLayer(fill,FILLSPRITE);
202 fill.graphics.moveTo(x0,y0);
203 if (s.fill_image) { new WayBitmapFiller(this,fill.graphics,s); }
204 else { s.applyFill(fill.graphics); }
205 solidLines(fill.graphics,inners);
206 fill.graphics.endFill();
211 if (s.casing_width) {
212 casing=new Shape(); addToLayer(casing,CASINGSPRITE);
213 casing.graphics.moveTo(x0,y0);
214 s.applyCasingStyle(casing.graphics);
215 if (s.casing_dashes && s.casing_dashes.length>0) { dashedLine(casing.graphics,s.casing_dashes); }
216 else { solidLines(casing.graphics,inners); }
221 if (sl.textStyles[sublayer]) {
222 var t:TextStyle=sl.textStyles[sublayer];
223 roadname=new Sprite(); addToLayer(roadname,NAMESPRITE);
224 nameformat = t.getTextFormat();
225 var a:String=tags[t.text];
227 if (t.font_caps) { a=a.toUpperCase(); }
228 if (t.text_center && centroid_x) {
229 t.writeNameLabel(roadname,a,centroid_x,centroid_y);
231 writeNameOnPath(roadname,a,t.text_offset ? t.text_offset : 0);
233 if (t.text_halo_radius>0) { roadname.filters=t.getHaloFilter(); }
237 // ** ShieldStyle to do
241 // ** there should be huge potential to optimise this - at present we're
242 // running getStyles for every node in the way on every redraw
243 // ** fix r/heading behaviour - that doesn't look right
246 var nodeSelected:int=stateClasses["nodeSelected"];
247 for (var i:uint = 0; i < way.length; i++) {
248 var node:Node = way.getNode(i);
249 nodetags=node.getTagsCopy();
250 if (i==0) { nodetags['_heading']= heading[i]; }
251 else { nodetags['_heading']=(heading[i]+heading[i-1])/2; }
252 if (stateClasses["showNodes"]) { nodetags[':selectedway']='yes'; }
253 if (stateClasses["showNodesHover"]) { nodetags[':hoverway']='yes'; }
254 if (node.id==nodeSelected) { nodetags[':selected']='yes'; }
255 if (node.numParentWays>1) { nodetags[':junction']='yes'; }
256 sl=paint.ruleset.getStyles(node,nodetags);
257 if (sl.hasStyles()) {
258 if (!paint.nodeuis[node.id]) {
259 paint.nodeuis[node.id]=new NodeUI(node,paint,r);
261 paint.nodeuis[node.id].redraw(sl);
262 } else if (paint.nodeuis[node.id]) {
263 paint.nodeuis[node.id].removeSprites();
264 delete paint.nodeuis[node.id];
267 if (!drawn) { return false; }
269 // create a generic "way" hitzone sprite
270 hitzone = new Sprite();
271 hitzone.graphics.lineStyle(4, 0x000000, 1, false, "normal", CapsStyle.ROUND, JointStyle.ROUND);
272 solidLines(hitzone.graphics,[]);
273 addToLayer(hitzone, CLICKSPRITE);
274 hitzone.visible = false;
275 setListenSprite(hitzone);
280 // ------------------------------------------------------------------------------------------
281 // Drawing support functions
283 // Draw solid polyline
285 public function solidLines(g:Graphics,inners:Array):void {
286 solidLine(g,this.way);
287 for each (var w:Way in inners) { solidLine(g,w); }
290 private function solidLine(g:Graphics,w:Way):void {
291 var node:Node = w.getNode(0);
292 g.moveTo(paint.map.lon2coord(node.lon), paint.map.latp2coord(node.latp));
293 for (var i:uint = 1; i < way.length; i++) {
295 g.lineTo(paint.map.lon2coord(node.lon), paint.map.latp2coord(node.latp));
299 // Draw dashed polyline
301 private function dashedLine(g:Graphics,dashes:Array):Array {
302 var segments:Array=[];
303 var draw:Boolean=false, dashleft:Number=0, dc:Array=new Array();
304 var a:Number, xc:Number, yc:Number;
305 var curx:Number, cury:Number;
306 var dx:Number, dy:Number, segleft:Number=0;
309 var node:Node = way.getNode(0);
310 var nextNode:Node = way.getNode(0);
311 g.moveTo(paint.map.lon2coord(node.lon), paint.map.latp2coord(node.latp));
312 while (i < way.length-1 || segleft>0) {
313 if (dashleft<=0) { // should be ==0
314 if (dc.length==0) { dc=dashes.slice(0); }
316 if (draw) { segments.push([curx,cury,dx,dy]); }
319 if (segleft<=0) { // should be ==0
320 node = way.getNode(i);
321 nextNode = way.getNode(i+1);
322 curx=paint.map.lon2coord(node.lon);
323 dx=paint.map.lon2coord(nextNode.lon)-curx;
324 cury=paint.map.latp2coord(node.latp);
325 dy=paint.map.latp2coord(nextNode.latp)-cury;
326 a=Math.atan2(dy,dx); xc=Math.cos(a); yc=Math.sin(a);
327 segleft=Math.sqrt(dx*dx+dy*dy);
331 if (segleft<=dashleft) {
332 // the path segment is shorter than the dash
334 moveLine(g,curx,cury,draw);
335 dashleft-=segleft; segleft=0;
337 // the path segment is longer than the dash
338 curx+=dashleft*xc; dx-=dashleft*xc;
339 cury+=dashleft*yc; dy-=dashleft*yc;
340 moveLine(g,curx,cury,draw);
341 segleft-=dashleft; dashleft=0;
347 private function moveLine(g:Graphics,x:Number,y:Number,draw:Boolean):void {
348 if (draw) { g.lineTo(x,y); }
349 else { g.moveTo(x,y); }
352 // Draw decoration (arrows etc.)
354 private function lineDecoration(g:Graphics,s:ShapeStyle,segments:Array):void {
355 var c:int=s.color ? s.color : 0;
356 switch (s.line_style.toLowerCase()) {
359 var w:Number=s.width*1.5; // width of arrow
360 var l:Number=s.width*2; // length of arrow
361 var angle0:Number, angle1:Number, angle2:Number;
363 for each (var seg:Array in segments) {
365 angle0= Math.atan2(seg[3],seg[2]);
366 angle1=-Math.atan2(seg[3],seg[2]);
367 angle2=-Math.atan2(seg[3],seg[2])-Math.PI;
368 g.moveTo(seg[0]+l*Math.cos(angle0),
369 seg[1]+l*Math.sin(angle0));
370 g.lineTo(seg[0]+w*Math.sin(angle1),
371 seg[1]+w*Math.cos(angle1));
372 g.lineTo(seg[0]+w*Math.sin(angle2),
373 seg[1]+w*Math.cos(angle2));
381 // Find point partway (0-1) along a path
382 // returns (x,y,angle)
383 // inspired by senocular's Path.as
385 private function pointAt(t:Number):Array {
386 var totallen:Number = t*pathlength;
387 var curlen:Number = 0;
388 var dx:Number, dy:Number, seglen:Number;
389 for (var i:int = 1; i < way.length; i++){
390 dx=paint.map.lon2coord(way.getNode(i).lon)-paint.map.lon2coord(way.getNode(i-1).lon);
391 dy=paint.map.latp2coord(way.getNode(i).latp)-paint.map.latp2coord(way.getNode(i-1).latp);
392 seglen=Math.sqrt(dx*dx+dy*dy);
393 if (totallen > curlen+seglen) { curlen+=seglen; continue; }
394 return new Array(paint.map.lon2coord(way.getNode(i-1).lon)+(totallen-curlen)/seglen*dx,
395 paint.map.latp2coord(way.getNode(i-1).latp)+(totallen-curlen)/seglen*dy,
398 return new Array(0, 0, 0);
401 // Draw name along path
402 // based on code by Tom Carden
404 private function writeNameOnPath(s:Sprite,a:String,textOffset:Number=0):void {
406 // make a dummy textfield so we can measure its width
407 var tf:TextField = new TextField();
408 tf.defaultTextFormat = nameformat;
410 tf.width = tf.textWidth+4;
411 tf.height = tf.textHeight+4;
412 if (pathlength<tf.width) { return; } // no room for text?
414 var t1:Number = (pathlength/2 - tf.width/2) / pathlength; var p1:Array=pointAt(t1);
415 var t2:Number = (pathlength/2 + tf.width/2) / pathlength; var p2:Array=pointAt(t2);
417 var angleOffset:Number; // so we can do a 180ยบ if we're running backwards
418 var offsetSign:Number; // -1 if we're starting at t2
419 var tStart:Number; // t1 or t2
421 // make sure text doesn't run right->left or upside down
424 p1[2] > -Math.PI/2) {
425 angleOffset = 0; offsetSign = 1; tStart = t1;
427 angleOffset = Math.PI; offsetSign = -1; tStart = t2;
430 // make a textfield for each char, centered on the line,
431 // using getCharBoundaries to rotate it around its center point
432 var chars:Array = a.split('');
433 for (var i:int = 0; i < chars.length; i++) {
434 var rect:Rectangle = tf.getCharBoundaries(i);
436 s.addChild(rotatedLetter(chars[i],
437 tStart + offsetSign*(rect.left+rect.width/2)/pathlength,
438 rect.width, tf.height, angleOffset, textOffset));
443 private function rotatedLetter(char:String, t:Number, w:Number, h:Number, a:Number, o:Number):TextField {
444 var tf:TextField = new TextField();
445 tf.mouseEnabled = false;
446 tf.mouseWheelEnabled = false;
447 tf.defaultTextFormat = nameformat;
448 tf.embedFonts = true;
450 tf.width = tf.textWidth+4;
451 tf.height = tf.textHeight+4;
453 var p:Array=pointAt(t);
454 var matrix:Matrix = new Matrix();
455 matrix.translate(-w/2, -h/2-o);
456 // ** add (say) -4 to the height to move it up by 4px
457 matrix.rotate(p[2]+a);
458 matrix.translate(p[0], p[1]);
459 tf.transform.matrix = matrix;
463 public function getNodeAt(x:Number, y:Number):Node {
464 for (var i:uint = 0; i < way.length; i++) {
465 var node:Node = way.getNode(i);
466 var nodeX:Number = paint.map.lon2coord(node.lon);
467 var nodeY:Number = paint.map.latp2coord(node.latp);
468 if ( nodeX >= x-NODESIZE && nodeX <= x+NODESIZE &&
469 nodeY >= y-NODESIZE && nodeY <= y+NODESIZE )
475 // ------------------------------------------------------------------------------------------
478 override protected function mouseEvent(event:MouseEvent):void {
479 paint.map.entityMouseEvent(event, way);
482 public function hitTest(x:Number, y:Number):Way {
483 if (hitzone.hitTestPoint(x,y,true)) { return way; }