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.*;
16 import net.systemeD.halcyon.connection.*;
17 import net.systemeD.halcyon.connection.EntityEvent;
18 import net.systemeD.halcyon.styleparser.*;
19 import net.systemeD.halcyon.vectorlayers.*;
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=19; // 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 public const NOT_DRAGGING:uint=0; // |
62 public const NOT_MOVED:uint=1; // |
63 public const DRAGGING:uint=2; // |
65 public var initparams:Object; // object containing HTML page parameters
67 public var backdrop:Object; // reference to backdrop sprite
68 public var tileset:TileSet; // 900913 tile background
69 private var tileurl:String=''; // internal tile URL
70 private var styleurl:String=''; // internal style URL
71 public var showall:Boolean=true; // show all objects, even if unstyled?
73 public var connection:Connection; // server connection
74 public var vectorlayers:Array=[]; // VectorLayer objects
76 public const TILESPRITE:uint=0;
77 public const VECTORSPRITE:uint=1;
78 public const WAYSPRITE:uint=2;
79 public const NAMESPRITE:uint=13;
81 // ------------------------------------------------------------------------------------------
82 // Map constructor function
84 public function Map(initparams:Object) {
86 this.initparams=initparams;
87 connection = Connection.getConnection(initparams);
88 connection.addEventListener(Connection.NEW_WAY, newWayCreated);
89 connection.addEventListener(Connection.NEW_POI, newPOICreated);
90 connection.addEventListener(Connection.WAY_RENUMBERED, wayRenumbered);
91 connection.addEventListener(Connection.NODE_RENUMBERED, nodeRenumbered);
94 addEventListener(Event.ENTER_FRAME, everyFrame);
97 public function gotEnvironment(r:Object):void {
98 var loader:Loader = new Loader();
99 loader.contentLoaderInfo.addEventListener(Event.COMPLETE, gotFont);
100 loader.load(new URLRequest("FontLibrary.swf"));
103 public function gotFont(r:Event):void {
104 var FontLibrary:Class = r.target.applicationDomain.getDefinition("FontLibrary") as Class;
105 Font.registerFont(FontLibrary.DejaVu);
107 if (initparams['lat'] != null) {
108 // parameters sent from HTML
109 init(initparams['lat'],
114 // somewhere innocuous
115 init(53.09465,-2.56495,17);
119 // ------------------------------------------------------------------------------------------
120 // Initialise map at a given lat/lon
122 public function init(startlat:Number,startlon:Number,startscale:uint=0):void {
123 while (numChildren) { removeChildAt(0); }
125 tileset=new TileSet(this); // 0 - 900913 background
126 addChild(tileset); // |
127 tileset.init(tileurl); // |
129 vectorbg = new Sprite(); // 1 - vector background layers
130 addChild(vectorbg); // |
132 paint = new MapPaint(this,-5,5); // 2 - core paint object
133 addChild(paint); // |
134 paint.isBackground=false; // |
136 if (styleurl) { // if we've only just set up paint, then setStyle won't have created the RuleSet
137 paint.ruleset=new RuleSet(MINSCALE,MAXSCALE,redraw,redrawPOIs);
138 paint.ruleset.loadFromCSS(styleurl);
140 if (startscale>0) { scale=startscale; }
142 scalefactor=MASTERSCALE/Math.pow(2,13-scale);
143 baselon =startlon -(mapwidth /2)/scalefactor;
144 basey =lat2latp(startlat)+(mapheight/2)/scalefactor;
145 addDebug("Baselon "+baselon+", basey "+basey);
151 // ------------------------------------------------------------------------------------------
152 // Recalculate co-ordinates from new Flash origin
154 public function updateCoords(tx:Number,ty:Number):void {
157 edge_t=coord2lat(-y );
158 edge_b=coord2lat(-y+mapheight);
159 edge_l=coord2lon(-x );
160 edge_r=coord2lon(-x+mapwidth );
166 public function updateCoordsFromLatLon(lat:Number,lon:Number):void {
167 var cy:Number=-(lat2coord(lat)-mapheight/2);
168 var cx:Number=-(lon2coord(lon)-mapwidth/2);
172 private function setCentre():void {
173 centre_lat=coord2lat(-y+mapheight/2);
174 centre_lon=coord2lon(-x+mapwidth/2);
175 this.dispatchEvent(new MapEvent(MapEvent.MOVE, {lat:centre_lat, lon:centre_lon, scale:scale}));
178 public function nudgeBackground(x:Number,y:Number):void {
179 this.dispatchEvent(new MapEvent(MapEvent.NUDGE_BACKGROUND, { x: x, y: y }));
182 // Co-ordinate conversion functions
184 public function latp2coord(a:Number):Number { return -(a-basey)*scalefactor; }
185 public function coord2latp(a:Number):Number { return a/-scalefactor+basey; }
186 public function lon2coord(a:Number):Number { return (a-baselon)*scalefactor; }
187 public function coord2lon(a:Number):Number { return a/scalefactor+baselon; }
189 public function latp2lat(a:Number):Number { return 180/Math.PI * (2 * Math.atan(Math.exp(a*Math.PI/180)) - Math.PI/2); }
190 public function lat2latp(a:Number):Number { return 180/Math.PI * Math.log(Math.tan(Math.PI/4+a*(Math.PI/180)/2)); }
192 public function lat2coord(a:Number):Number { return -(lat2latp(a)-basey)*scalefactor; }
193 public function coord2lat(a:Number):Number { return latp2lat(a/-scalefactor+basey); }
195 // public function centrelat(o) { return coord2lat((yradius-_root.map._y-o)/Math.pow(2,_root.scale-13)); }
196 // public function centrelon(o) { return coord2lon((xradius-_root.map._x-o)/Math.pow(2,_root.scale-13)); }
199 // ------------------------------------------------------------------------------------------
200 // Resize map size based on current stage and height
202 public function updateSize(w:uint, h:uint):void {
203 this.dispatchEvent(new MapEvent(MapEvent.RESIZE, {width:w, height:h}));
207 if ( backdrop != null ) {
208 backdrop.width=mapwidth;
209 backdrop.height=mapheight;
211 if ( mask != null ) {
213 mask.height=mapheight;
217 // ------------------------------------------------------------------------------------------
219 // (typically from whichways, but will want to add more connections)
221 public function download():void {
222 this.dispatchEvent(new MapEvent(MapEvent.DOWNLOAD, {minlon:edge_l, maxlon:edge_r, maxlat:edge_t, minlat:edge_b} ));
224 if (edge_l>=bigedge_l && edge_r<=bigedge_r &&
225 edge_b>=bigedge_b && edge_t<=bigedge_t) { return; } // we have already loaded this area, so ignore
226 bigedge_l=edge_l; bigedge_r=edge_r;
227 bigedge_b=edge_b; bigedge_t=edge_t;
228 if (connection.waycount>1000) {
229 connection.purgeOutside(edge_l,edge_r,edge_t,edge_b);
231 addDebug("Calling download with "+edge_l+"-"+edge_r+", "+edge_t+"-"+edge_b);
232 connection.loadBbox(edge_l,edge_r,edge_t,edge_b);
235 private function newWayCreated(event:EntityEvent):void {
236 var way:Way = event.entity as Way;
237 if (!way.loaded || !way.within(edge_l,edge_r,edge_t,edge_b)) { return; }
238 paint.createWayUI(way);
241 private function newPOICreated(event:EntityEvent):void {
242 var node:Node = event.entity as Node;
243 if (!node.within(edge_l,edge_r,edge_t,edge_b)) { return; }
244 paint.createNodeUI(node);
247 private function wayRenumbered(event:EntityRenumberedEvent):void {
248 var way:Way = event.entity as Way;
249 paint.renumberWayUI(way,event.oldID);
252 private function nodeRenumbered(event:EntityRenumberedEvent):void {
253 var node:Node = event.entity as Node;
254 paint.renumberNodeUI(node,event.oldID);
257 public function setHighlight(entity:Entity, settings:Object):void {
258 var stateType:String;
259 var ui:EntityUI=null;
260 if ( entity is Way ) { ui = paint.wayuis[entity.id]; }
261 else if ( entity is Node ) { ui = paint.nodeuis[entity.id]; }
262 if (ui==null) { return; }
263 for (stateType in settings) {
264 ui.setHighlight(stateType, settings[stateType]);
269 // Handle mouse events on ways/nodes
270 private var mapController:MapController = null;
272 public function setController(controller:MapController):void {
273 this.mapController = controller;
276 public function entityMouseEvent(event:MouseEvent, entity:Entity):void {
277 if ( mapController != null )
278 mapController.entityMouseEvent(event, entity);
282 // ------------------------------------------------------------------------------------------
283 // Redraw all items, zoom in and out
285 public function updateEntityUIs(redraw:Boolean,remove:Boolean):void {
286 paint.updateEntityUIs(connection.getObjectsByBbox(edge_l, edge_r, edge_t, edge_b), redraw, remove);
287 for each (var v:VectorLayer in vectorlayers) {
288 v.paint.updateEntityUIs(v.getObjectsByBbox(edge_l, edge_r, edge_t, edge_b), redraw, remove);
291 public function redraw():void {
293 for each (var v:VectorLayer in vectorlayers) { v.paint.redraw(); }
295 public function redrawPOIs():void {
297 for each (var v:VectorLayer in vectorlayers) { v.paint.redrawPOIs(); }
300 public function zoomIn():void {
301 if (scale==MAXSCALE) { return; }
302 changeScale(scale+1);
305 public function zoomOut():void {
306 if (scale==MINSCALE) { return; }
307 changeScale(scale-1);
310 private function changeScale(newscale:uint):void {
311 addDebug("new scale "+newscale);
313 scalefactor=MASTERSCALE/Math.pow(2,13-scale);
314 updateCoordsFromLatLon((edge_t+edge_b)/2,(edge_l+edge_r)/2); // recentre
315 tileset.changeScale(scale);
316 updateEntityUIs(true,true);
320 private function reportPosition():void {
321 addDebug("lon "+coord2lon(mouseX)+", lat "+coord2lat(mouseY));
324 public function setStyle(url:String):void {
327 paint.ruleset=new RuleSet(MINSCALE,MAXSCALE,redraw,redrawPOIs);
328 paint.ruleset.loadFromCSS(url);
332 public function setBackground(url:String):void {
334 if (tileset) { tileset.init(url, url!=''); }
337 public function setDimming(dim:Boolean):void {
338 if (tileset) { tileset.setDimming(dim); }
341 // ------------------------------------------------------------------------------------------
342 // Export (experimental)
343 // ** just a bit of fun for now!
344 // really needs to take a bbox, and make sure that the image is correctly cropped/resized
345 // to that area (will probably require creating a new DisplayObject with a different origin
348 public function export():void {
349 addDebug("size is "+this.width+","+this.height);
350 var jpgSource:BitmapData = new BitmapData(800,800); // (this.width, this.height);
351 jpgSource.draw(this);
352 var jpgEncoder:JPGEncoder = new JPGEncoder(85);
353 var jpgStream:ByteArray = jpgEncoder.encode(jpgSource);
354 var fileRef:FileReference = new FileReference();
355 // fileRef.save(jpgStream,'map.jpeg');
360 // ==========================================================================================
363 // ------------------------------------------------------------------------------------------
366 public function set draggable(draggable:Boolean):void {
367 _draggable=draggable;
368 dragstate=NOT_DRAGGING;
371 public function mouseDownHandler(event:MouseEvent):void {
372 if (!_draggable) { return; }
374 lastxmouse=downX=mouseX;
375 lastymouse=downY=mouseY;
378 public function mouseUpHandler(event:MouseEvent):void {
379 if (dragstate==DRAGGING) {
381 updateEntityUIs(false, false);
384 dragstate=NOT_DRAGGING;
387 public function mouseMoveHandler(event:MouseEvent):void {
388 if (!_draggable) { return; }
389 if (dragstate==NOT_DRAGGING) { return; }
391 if (dragstate==NOT_MOVED && Math.abs(downX - mouseX) < 3 && Math.abs(downY - mouseY) < 3) {
396 x+=mouseX-lastxmouse;
397 y+=mouseY-lastymouse;
398 lastxmouse=mouseX; lastymouse=mouseY;
402 // ------------------------------------------------------------------------------------------
405 private function everyFrame(event:Event):void {
406 if (tileset) { tileset.serviceQueue(); }
409 // ------------------------------------------------------------------------------------------
410 // Miscellaneous events
412 public function keyUpHandler(event:KeyboardEvent):void {
413 if ( !event.ctrlKey ) return;
414 addDebug("pressed "+event.keyCode);
415 if (event.keyCode==73) { zoomIn(); } // I - zoom in
416 if (event.keyCode==79) { zoomOut(); } // O - zoom out
417 if (event.keyCode==76) { reportPosition(); } // L - report lat/long
420 public function connectionError(err:Object=null): void {
421 addDebug("got error");
424 // ------------------------------------------------------------------------------------------
427 public function clearDebug():void {
428 if (!Globals.vars.hasOwnProperty('debug')) return;
429 Globals.vars.debug.text='';
432 public function addDebug(text:String):void {
433 if (!Globals.vars.hasOwnProperty('debug')) return;
434 if (!Globals.vars.debug.visible) return;
435 Globals.vars.debug.appendText(text+"\n");
436 Globals.vars.debug.scrollV=Globals.vars.debug.maxScrollV;