1 package net.systemeD.halcyon {
3 import flash.text.TextField;
4 import flash.display.DisplayObjectContainer;
5 import flash.display.Loader;
6 import flash.display.Sprite;
7 import flash.display.Shape;
8 import flash.display.Stage;
9 import flash.display.BitmapData;
10 import flash.display.LoaderInfo;
11 import flash.text.Font;
12 import flash.utils.ByteArray;
13 import flash.events.*;
15 import flash.external.ExternalInterface;
17 import net.systemeD.halcyon.connection.*;
18 import net.systemeD.halcyon.connection.EntityEvent;
19 import net.systemeD.halcyon.styleparser.*;
20 import net.systemeD.halcyon.Globals;
22 // for experimental export function:
23 // import flash.net.FileReference;
24 // import com.adobe.images.JPGEncoder;
26 public class Map extends Sprite {
28 public const MASTERSCALE:Number=5825.4222222222;// master map scale - how many Flash pixels in 1 degree longitude
29 // (for Landsat, 5120)
30 public const MINSCALE:uint=13; // don't zoom out past this
31 public const MAXSCALE:uint=23; // don't zoom in past this
33 public var paint:MapPaint; // sprite for ways and (POI/tagged) nodes in core layer
34 public var vectorbg:Sprite; // sprite for vector background layers
36 public var scale:uint=14; // map scale
37 public var scalefactor:Number=MASTERSCALE; // current scaling factor for lon/latp
38 public var bigedge_l:Number= 999999; // area of largest whichways
39 public var bigedge_r:Number=-999999; // |
40 public var bigedge_b:Number= 999999; // |
41 public var bigedge_t:Number=-999999; // |
43 public var edge_l:Number; // current bounding box
44 public var edge_r:Number; // |
45 public var edge_t:Number; // |
46 public var edge_b:Number; // |
47 public var centre_lat:Number; // centre lat/lon
48 public var centre_lon:Number; // |
50 public var baselon:Number; // urllon-xradius/masterscale;
51 public var basey:Number; // lat2lat2p(urllat)+yradius/masterscale;
52 public var mapwidth:uint; // width (Flash pixels)
53 public var mapheight:uint; // height (Flash pixels)
55 public var dragstate:uint=NOT_DRAGGING; // dragging map
56 private var _draggable:Boolean=true; // |
57 private var lastxmouse:Number; // |
58 private var lastymouse:Number; // |
59 private var downX:Number; // |
60 private var downY:Number; // |
61 private var downTime:Number; // |
62 public const NOT_DRAGGING:uint=0; // |
63 public const NOT_MOVED:uint=1; // |
64 public const DRAGGING:uint=2; // |
65 public const TOLERANCE:uint=7; // |
67 public var initparams:Object; // object containing HTML page parameters
69 public var backdrop:Object; // reference to backdrop sprite
70 public var tileset:TileSet; // background tile object
71 private var tileparams:Object={ url:'' }; // background tile URL, name and scheme
72 private var styleurl:String=''; // internal style URL
73 public var showall:Boolean=true; // show all objects, even if unstyled?
75 public var connection:Connection; // server connection
76 public var vectorlayers:Object={}; // VectorLayer objects
78 // ------------------------------------------------------------------------------------------
79 // Map constructor function
81 public function Map(initparams:Object) {
83 this.initparams=initparams;
84 connection = Connection.getConnection(initparams);
85 connection.addEventListener(Connection.NEW_WAY, newWayCreated);
86 connection.addEventListener(Connection.NEW_POI, newPOICreated);
87 connection.addEventListener(Connection.WAY_RENUMBERED, wayRenumbered);
88 connection.addEventListener(Connection.NODE_RENUMBERED, nodeRenumbered);
91 addEventListener(Event.ENTER_FRAME, everyFrame);
94 public function gotEnvironment(r:Object):void {
95 var loader:Loader = new Loader();
96 loader.contentLoaderInfo.addEventListener(Event.COMPLETE, gotFont);
97 loader.load(new URLRequest("FontLibrary.swf"));
100 public function gotFont(r:Event):void {
101 var FontLibrary:Class = r.target.applicationDomain.getDefinition("FontLibrary") as Class;
102 Font.registerFont(FontLibrary.DejaVu);
104 if (initparams['lat'] != null) {
105 // parameters sent from HTML
106 init(initparams['lat'],
111 // somewhere innocuous
112 init(53.09465,-2.56495,17);
116 // ------------------------------------------------------------------------------------------
117 // Initialise map at a given lat/lon
119 public function init(startlat:Number, startlon:Number, startscale:uint=0):void {
120 while (numChildren) { removeChildAt(0); }
122 tileset=new TileSet(this); // 0 - 900913 background
123 if (initparams['tileblocks']) { // | option to block dodgy tile sources
124 tileset.blocks=initparams['tileblocks'];// |
126 addChild(tileset); // |
127 tileset.init(tileparams, false,
128 initparams['background_dim'] ==null ? true : initparams['background_dim'],
129 initparams['background_sharpen']==null ? false : initparams['background_sharpen']);
131 vectorbg = new Sprite(); // 1 - vector background layers
132 addChild(vectorbg); // |
134 paint = new MapPaint(this,-5,5); // 2 - core paint object
135 addChild(paint); // |
136 paint.isBackground=false; // |
138 if (styleurl) { // if we've only just set up paint, then setStyle won't have created the RuleSet
139 paint.ruleset=new RuleSet(MINSCALE,MAXSCALE,redraw,redrawPOIs);
140 paint.ruleset.loadFromCSS(styleurl);
144 this.dispatchEvent(new MapEvent(MapEvent.SCALE, {scale:scale}));
147 scalefactor=MASTERSCALE/Math.pow(2,13-scale);
148 baselon =startlon -(mapwidth /2)/scalefactor;
149 basey =lat2latp(startlat)+(mapheight/2)/scalefactor;
150 addDebug("Baselon "+baselon+", basey "+basey);
152 this.dispatchEvent(new Event(MapEvent.INITIALISED));
155 if (ExternalInterface.available) {
156 ExternalInterface.addCallback("setPosition", function (lat:Number,lon:Number,zoom:uint):void {
157 updateCoordsFromLatLon(lat, lon);
163 // ------------------------------------------------------------------------------------------
164 // Recalculate co-ordinates from new Flash origin
166 public function updateCoords(tx:Number,ty:Number):void {
169 edge_t=coord2lat(-y );
170 edge_b=coord2lat(-y+mapheight);
171 edge_l=coord2lon(-x );
172 edge_r=coord2lon(-x+mapwidth );
178 public function updateCoordsFromLatLon(lat:Number,lon:Number):void {
179 var cy:Number=-(lat2coord(lat)-mapheight/2);
180 var cx:Number=-(lon2coord(lon)-mapwidth/2);
184 private function setCentre():void {
185 centre_lat=coord2lat(-y+mapheight/2);
186 centre_lon=coord2lon(-x+mapwidth/2);
187 this.dispatchEvent(new MapEvent(MapEvent.MOVE, {lat:centre_lat, lon:centre_lon, scale:scale, minlon:edge_l, maxlon:edge_r, minlat:edge_b, maxlat:edge_t}));
190 public function nudgeBackground(x:Number,y:Number):void {
191 this.dispatchEvent(new MapEvent(MapEvent.NUDGE_BACKGROUND, { x: x, y: y }));
194 private function moveMap(dx:Number,dy:Number):void {
195 updateCoords(x+dx,y+dy);
196 updateEntityUIs(false, false);
200 // Co-ordinate conversion functions
202 public function latp2coord(a:Number):Number { return -(a-basey)*scalefactor; }
203 public function coord2latp(a:Number):Number { return a/-scalefactor+basey; }
204 public function lon2coord(a:Number):Number { return (a-baselon)*scalefactor; }
205 public function coord2lon(a:Number):Number { return a/scalefactor+baselon; }
207 public function latp2lat(a:Number):Number { return 180/Math.PI * (2 * Math.atan(Math.exp(a*Math.PI/180)) - Math.PI/2); }
208 public function lat2latp(a:Number):Number { return 180/Math.PI * Math.log(Math.tan(Math.PI/4+a*(Math.PI/180)/2)); }
210 public function lat2coord(a:Number):Number { return -(lat2latp(a)-basey)*scalefactor; }
211 public function coord2lat(a:Number):Number { return latp2lat(a/-scalefactor+basey); }
213 // public function centrelat(o) { return coord2lat((yradius-_root.map._y-o)/Math.pow(2,_root.scale-13)); }
214 // public function centrelon(o) { return coord2lon((xradius-_root.map._x-o)/Math.pow(2,_root.scale-13)); }
217 // ------------------------------------------------------------------------------------------
218 // Resize map size based on current stage and height
220 public function updateSize(w:uint, h:uint):void {
221 mapwidth = w; centre_lon=coord2lon(-x+w/2);
222 mapheight= h; centre_lat=coord2lat(-y+h/2);
224 this.dispatchEvent(new MapEvent(MapEvent.RESIZE, {width:w, height:h}));
226 if ( backdrop != null ) {
227 backdrop.width=mapwidth;
228 backdrop.height=mapheight;
230 if ( mask != null ) {
232 mask.height=mapheight;
236 /** Download map data. Data is downloaded for the connection and the vector layers, where supported.
237 * The bounding box for the download is taken from the current map edges.
239 public function download():void {
240 this.dispatchEvent(new MapEvent(MapEvent.DOWNLOAD, {minlon:edge_l, maxlon:edge_r, maxlat:edge_t, minlat:edge_b} ));
242 if (edge_l>=bigedge_l && edge_r<=bigedge_r &&
243 edge_b>=bigedge_b && edge_t<=bigedge_t) { return; } // we have already loaded this area, so ignore
244 bigedge_l=edge_l; bigedge_r=edge_r;
245 bigedge_b=edge_b; bigedge_t=edge_t;
246 if (connection.waycount>1000) {
247 connection.purgeOutside(edge_l,edge_r,edge_t,edge_b);
249 addDebug("Calling download with "+edge_l+"-"+edge_r+", "+edge_t+"-"+edge_b);
250 connection.loadBbox(edge_l,edge_r,edge_t,edge_b);
252 // Do the same for vector layers
253 for each (var layer:VectorLayer in vectorlayers) {
254 layer.loadBbox(edge_l,edge_r,edge_t,edge_b);
258 private function newWayCreated(event:EntityEvent):void {
259 var way:Way = event.entity as Way;
260 if (!way.loaded || !way.within(edge_l,edge_r,edge_t,edge_b)) { return; }
261 paint.createWayUI(way);
264 private function newPOICreated(event:EntityEvent):void {
265 var node:Node = event.entity as Node;
266 if (!node.within(edge_l,edge_r,edge_t,edge_b)) { return; }
267 paint.createNodeUI(node);
270 private function wayRenumbered(event:EntityRenumberedEvent):void {
271 var way:Way = event.entity as Way;
272 paint.renumberWayUI(way,event.oldID);
275 private function nodeRenumbered(event:EntityRenumberedEvent):void {
276 var node:Node = event.entity as Node;
277 paint.renumberNodeUI(node,event.oldID);
280 public function setHighlight(entity:Entity, settings:Object):void {
281 if ( entity is Way && paint.wayuis[entity.id] ) { paint.wayuis[entity.id].setHighlight(settings); }
282 else if ( entity is Node && paint.nodeuis[entity.id]) { paint.nodeuis[entity.id].setHighlight(settings); }
285 public function setHighlightOnNodes(way:Way, settings:Object):void {
286 if (paint.wayuis[way.id]) paint.wayuis[way.id].setHighlightOnNodes(settings);
289 /* Protect Entities and EntityUIs against purging. This prevents the currently selected items
290 from being purged even though they're off-screen. */
292 public function setPurgable(entities:Array, purgable:Boolean):void {
293 for each (var entity:Entity in entities) {
294 entity.locked=!purgable;
295 if ( entity is Way ) {
296 var way:Way=entity as Way;
297 if (paint.wayuis[way.id]) { paint.wayuis[way.id].purgable=purgable; }
298 for (var i:uint=0; i<way.length; i++) {
299 var node:Node=way.getNode(i)
300 node.locked=!purgable;
301 if (paint.nodeuis[node.id]) { paint.nodeuis[node.id].purgable=purgable; }
303 } else if ( entity is Node && paint.nodeuis[entity.id]) {
304 paint.nodeuis[entity.id].purgable=purgable;
309 // Handle mouse events on ways/nodes
310 private var mapController:MapController = null;
312 public function setController(controller:MapController):void {
313 this.mapController = controller;
316 public function entityMouseEvent(event:MouseEvent, entity:Entity):void {
317 if ( mapController != null )
318 mapController.entityMouseEvent(event, entity);
322 // ------------------------------------------------------------------------------------------
325 public function addVectorLayer(layer:VectorLayer):void {
326 vectorlayers[layer.name]=layer;
327 vectorbg.addChild(layer.paint);
330 // ------------------------------------------------------------------------------------------
331 // Redraw all items, zoom in and out
333 public function updateEntityUIs(redraw:Boolean,remove:Boolean):void {
334 paint.updateEntityUIs(connection.getObjectsByBbox(edge_l, edge_r, edge_t, edge_b), redraw, remove);
335 for each (var v:VectorLayer in vectorlayers) {
336 v.paint.updateEntityUIs(v.getObjectsByBbox(edge_l, edge_r, edge_t, edge_b), redraw, remove);
339 public function redraw():void {
341 for each (var v:VectorLayer in vectorlayers) { v.paint.redraw(); }
343 public function redrawPOIs():void {
345 for each (var v:VectorLayer in vectorlayers) { v.paint.redrawPOIs(); }
348 public function zoomIn():void {
349 if (scale==MAXSCALE) { return; }
350 changeScale(scale+1);
353 public function zoomOut():void {
354 if (scale==MINSCALE) { return; }
355 changeScale(scale-1);
358 private function changeScale(newscale:uint):void {
359 addDebug("new scale "+newscale);
361 this.dispatchEvent(new MapEvent(MapEvent.SCALE, {scale:scale}));
362 scalefactor=MASTERSCALE/Math.pow(2,13-scale);
363 updateCoordsFromLatLon((edge_t+edge_b)/2,(edge_l+edge_r)/2); // recentre
364 tileset.changeScale(scale);
365 updateEntityUIs(true,true);
369 private function reportPosition():void {
370 addDebug("lon "+coord2lon(mouseX)+", lat "+coord2lat(mouseY));
373 public function setStyle(url:String):void {
376 paint.ruleset=new RuleSet(MINSCALE,MAXSCALE,redraw,redrawPOIs);
377 paint.ruleset.loadFromCSS(url);
381 public function setBackground(bg:Object):void {
383 if (tileset) { tileset.init(bg, bg.url!=''); }
386 public function setDimming(dim:Boolean):void {
387 if (tileset) { tileset.setDimming(dim); }
389 public function getDimming():Boolean {
390 if (tileset) { return tileset.getDimming(); }
394 public function setSharpen(sharpen:Boolean):void {
395 if (tileset) { tileset.setSharpen(sharpen); }
397 public function getSharpen():Boolean {
398 if (tileset) { return tileset.getSharpen(); }
402 // ------------------------------------------------------------------------------------------
403 // Export (experimental)
404 // ** just a bit of fun for now!
405 // really needs to take a bbox, and make sure that the image is correctly cropped/resized
406 // to that area (will probably require creating a new DisplayObject with a different origin
409 public function export():void {
410 addDebug("size is "+this.width+","+this.height);
411 var jpgSource:BitmapData = new BitmapData(800,800); // (this.width, this.height);
412 jpgSource.draw(this);
413 var jpgEncoder:JPGEncoder = new JPGEncoder(85);
414 var jpgStream:ByteArray = jpgEncoder.encode(jpgSource);
415 var fileRef:FileReference = new FileReference();
416 // fileRef.save(jpgStream,'map.jpeg');
421 // ==========================================================================================
424 // ------------------------------------------------------------------------------------------
427 public function set draggable(draggable:Boolean):void {
428 _draggable=draggable;
429 dragstate=NOT_DRAGGING;
432 public function mouseDownHandler(event:MouseEvent):void {
433 if (!_draggable) { return; }
435 lastxmouse=mouseX; downX=stage.mouseX;
436 lastymouse=mouseY; downY=stage.mouseY;
437 downTime=new Date().getTime();
440 public function mouseUpHandler(event:MouseEvent=null):void {
441 if (dragstate==DRAGGING) { moveMap(0,0); }
442 dragstate=NOT_DRAGGING;
445 public function mouseMoveHandler(event:MouseEvent):void {
446 if (!_draggable) { return; }
447 if (dragstate==NOT_DRAGGING) { return; }
449 if (dragstate==NOT_MOVED) {
450 if (new Date().getTime()-downTime<300) {
451 if (Math.abs(downX-stage.mouseX)<=TOLERANCE && Math.abs(downY-stage.mouseY)<=TOLERANCE ) return;
453 if (Math.abs(downX-stage.mouseX)<=TOLERANCE/2 && Math.abs(downY-stage.mouseY)<=TOLERANCE/2) return;
458 x+=mouseX-lastxmouse;
459 y+=mouseY-lastymouse;
460 lastxmouse=mouseX; lastymouse=mouseY;
464 // ------------------------------------------------------------------------------------------
467 private function everyFrame(event:Event):void {
468 if (tileset) { tileset.serviceQueue(); }
471 // ------------------------------------------------------------------------------------------
472 // Miscellaneous events
474 public function keyUpHandler(event:KeyboardEvent):void {
475 if (event.target is TextField) return; // not meant for us
476 switch (event.keyCode) {
477 case 33: zoomIn(); break; // Page Up - zoom in
478 case 34: zoomOut(); break; // Page Down - zoom out
479 case 37: moveMap(mapwidth/2,0); break; // left cursor
480 case 38: moveMap(0,mapheight/2); break; // up cursor
481 case 39: moveMap(-mapwidth/2,0); break; // right cursor
482 case 40: moveMap(0,-mapheight/2); break; // down cursor
483 // case 76: reportPosition(); break; // L - report lat/long
487 public function connectionError(err:Object=null): void {
488 addDebug("got error");
491 // ------------------------------------------------------------------------------------------
494 public function clearDebug():void {
495 if (!Globals.vars.hasOwnProperty('debug')) return;
496 Globals.vars.debug.text='';
499 public function addDebug(text:String):void {
501 if (!Globals.vars.hasOwnProperty('debug')) return;
502 if (!Globals.vars.debug.visible) return;
503 Globals.vars.debug.appendText(text+"\n");
504 Globals.vars.debug.scrollV=Globals.vars.debug.maxScrollV;