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.Globals;
21 // for experimental export function:
22 // import flash.net.FileReference;
23 // import com.adobe.images.JPGEncoder;
25 public class Map extends Sprite {
27 public const MASTERSCALE:Number=5825.4222222222;// master map scale - how many Flash pixels in 1 degree longitude
28 // (for Landsat, 5120)
29 public const MINSCALE:uint=13; // don't zoom out past this
30 public const MAXSCALE:uint=23; // don't zoom in past this
32 public var paint:MapPaint; // sprite for ways and (POI/tagged) nodes in core layer
33 public var vectorbg:Sprite; // sprite for vector background layers
35 public var scale:uint=14; // map scale
36 public var scalefactor:Number=MASTERSCALE; // current scaling factor for lon/latp
37 public var bigedge_l:Number= 999999; // area of largest whichways
38 public var bigedge_r:Number=-999999; // |
39 public var bigedge_b:Number= 999999; // |
40 public var bigedge_t:Number=-999999; // |
42 public var edge_l:Number; // current bounding box
43 public var edge_r:Number; // |
44 public var edge_t:Number; // |
45 public var edge_b:Number; // |
46 public var centre_lat:Number; // centre lat/lon
47 public var centre_lon:Number; // |
49 public var baselon:Number; // urllon-xradius/masterscale;
50 public var basey:Number; // lat2lat2p(urllat)+yradius/masterscale;
51 public var mapwidth:uint; // width (Flash pixels)
52 public var mapheight:uint; // height (Flash pixels)
54 public var dragstate:uint=NOT_DRAGGING; // dragging map
55 private var _draggable:Boolean=true; // |
56 private var lastxmouse:Number; // |
57 private var lastymouse:Number; // |
58 private var downX:Number; // |
59 private var downY:Number; // |
60 public const NOT_DRAGGING:uint=0; // |
61 public const NOT_MOVED:uint=1; // |
62 public const DRAGGING:uint=2; // |
64 public var initparams:Object; // object containing HTML page parameters
66 public var backdrop:Object; // reference to backdrop sprite
67 public var tileset:TileSet; // 900913 tile background
68 private var tileurl:String=''; // internal tile URL
69 private var styleurl:String=''; // internal style URL
70 public var showall:Boolean=true; // show all objects, even if unstyled?
72 public var connection:Connection; // server connection
73 public var vectorlayers:Object={}; // VectorLayer objects
75 public const TILESPRITE:uint=0;
76 public const VECTORSPRITE:uint=1;
77 public const WAYSPRITE:uint=2;
78 public const NAMESPRITE:uint=13;
80 // ------------------------------------------------------------------------------------------
81 // Map constructor function
83 public function Map(initparams:Object) {
85 this.initparams=initparams;
86 connection = Connection.getConnection(initparams);
87 connection.addEventListener(Connection.NEW_WAY, newWayCreated);
88 connection.addEventListener(Connection.NEW_POI, newPOICreated);
89 connection.addEventListener(Connection.WAY_RENUMBERED, wayRenumbered);
90 connection.addEventListener(Connection.NODE_RENUMBERED, nodeRenumbered);
93 addEventListener(Event.ENTER_FRAME, everyFrame);
96 public function gotEnvironment(r:Object):void {
97 var loader:Loader = new Loader();
98 loader.contentLoaderInfo.addEventListener(Event.COMPLETE, gotFont);
99 loader.load(new URLRequest("FontLibrary.swf"));
102 public function gotFont(r:Event):void {
103 var FontLibrary:Class = r.target.applicationDomain.getDefinition("FontLibrary") as Class;
104 Font.registerFont(FontLibrary.DejaVu);
106 if (initparams['lat'] != null) {
107 // parameters sent from HTML
108 init(initparams['lat'],
113 // somewhere innocuous
114 init(53.09465,-2.56495,17);
118 // ------------------------------------------------------------------------------------------
119 // Initialise map at a given lat/lon
121 public function init(startlat:Number,startlon:Number,startscale:uint=0):void {
122 while (numChildren) { removeChildAt(0); }
124 tileset=new TileSet(this); // 0 - 900913 background
125 addChild(tileset); // |
126 tileset.init(tileurl); // |
128 vectorbg = new Sprite(); // 1 - vector background layers
129 addChild(vectorbg); // |
131 paint = new MapPaint(this,-5,5); // 2 - core paint object
132 addChild(paint); // |
133 paint.isBackground=false; // |
135 if (styleurl) { // if we've only just set up paint, then setStyle won't have created the RuleSet
136 paint.ruleset=new RuleSet(MINSCALE,MAXSCALE,redraw,redrawPOIs);
137 paint.ruleset.loadFromCSS(styleurl);
139 if (startscale>0) { scale=startscale; }
141 scalefactor=MASTERSCALE/Math.pow(2,13-scale);
142 baselon =startlon -(mapwidth /2)/scalefactor;
143 basey =lat2latp(startlat)+(mapheight/2)/scalefactor;
144 addDebug("Baselon "+baselon+", basey "+basey);
150 // ------------------------------------------------------------------------------------------
151 // Recalculate co-ordinates from new Flash origin
153 public function updateCoords(tx:Number,ty:Number):void {
156 edge_t=coord2lat(-y );
157 edge_b=coord2lat(-y+mapheight);
158 edge_l=coord2lon(-x );
159 edge_r=coord2lon(-x+mapwidth );
165 public function updateCoordsFromLatLon(lat:Number,lon:Number):void {
166 var cy:Number=-(lat2coord(lat)-mapheight/2);
167 var cx:Number=-(lon2coord(lon)-mapwidth/2);
171 private function setCentre():void {
172 centre_lat=coord2lat(-y+mapheight/2);
173 centre_lon=coord2lon(-x+mapwidth/2);
174 this.dispatchEvent(new MapEvent(MapEvent.MOVE, {lat:centre_lat, lon:centre_lon, scale:scale}));
177 public function nudgeBackground(x:Number,y:Number):void {
178 this.dispatchEvent(new MapEvent(MapEvent.NUDGE_BACKGROUND, { x: x, y: y }));
181 // Co-ordinate conversion functions
183 public function latp2coord(a:Number):Number { return -(a-basey)*scalefactor; }
184 public function coord2latp(a:Number):Number { return a/-scalefactor+basey; }
185 public function lon2coord(a:Number):Number { return (a-baselon)*scalefactor; }
186 public function coord2lon(a:Number):Number { return a/scalefactor+baselon; }
188 public function latp2lat(a:Number):Number { return 180/Math.PI * (2 * Math.atan(Math.exp(a*Math.PI/180)) - Math.PI/2); }
189 public function lat2latp(a:Number):Number { return 180/Math.PI * Math.log(Math.tan(Math.PI/4+a*(Math.PI/180)/2)); }
191 public function lat2coord(a:Number):Number { return -(lat2latp(a)-basey)*scalefactor; }
192 public function coord2lat(a:Number):Number { return latp2lat(a/-scalefactor+basey); }
194 // public function centrelat(o) { return coord2lat((yradius-_root.map._y-o)/Math.pow(2,_root.scale-13)); }
195 // public function centrelon(o) { return coord2lon((xradius-_root.map._x-o)/Math.pow(2,_root.scale-13)); }
198 // ------------------------------------------------------------------------------------------
199 // Resize map size based on current stage and height
201 public function updateSize(w:uint, h:uint):void {
202 this.dispatchEvent(new MapEvent(MapEvent.RESIZE, {width:w, height:h}));
206 if ( backdrop != null ) {
207 backdrop.width=mapwidth;
208 backdrop.height=mapheight;
210 if ( mask != null ) {
212 mask.height=mapheight;
216 // ------------------------------------------------------------------------------------------
218 // (typically from whichways, but will want to add more connections)
220 public function download():void {
221 this.dispatchEvent(new MapEvent(MapEvent.DOWNLOAD, {minlon:edge_l, maxlon:edge_r, maxlat:edge_t, minlat:edge_b} ));
223 if (edge_l>=bigedge_l && edge_r<=bigedge_r &&
224 edge_b>=bigedge_b && edge_t<=bigedge_t) { return; } // we have already loaded this area, so ignore
225 bigedge_l=edge_l; bigedge_r=edge_r;
226 bigedge_b=edge_b; bigedge_t=edge_t;
227 if (connection.waycount>1000) {
228 connection.purgeOutside(edge_l,edge_r,edge_t,edge_b);
230 addDebug("Calling download with "+edge_l+"-"+edge_r+", "+edge_t+"-"+edge_b);
231 connection.loadBbox(edge_l,edge_r,edge_t,edge_b);
234 private function newWayCreated(event:EntityEvent):void {
235 var way:Way = event.entity as Way;
236 if (!way.loaded || !way.within(edge_l,edge_r,edge_t,edge_b)) { return; }
237 paint.createWayUI(way);
240 private function newPOICreated(event:EntityEvent):void {
241 var node:Node = event.entity as Node;
242 if (!node.within(edge_l,edge_r,edge_t,edge_b)) { return; }
243 paint.createNodeUI(node);
246 private function wayRenumbered(event:EntityRenumberedEvent):void {
247 var way:Way = event.entity as Way;
248 paint.renumberWayUI(way,event.oldID);
251 private function nodeRenumbered(event:EntityRenumberedEvent):void {
252 var node:Node = event.entity as Node;
253 paint.renumberNodeUI(node,event.oldID);
256 public function setHighlight(entity:Entity, settings:Object):void {
257 if ( entity is Way ) { paint.wayuis[entity.id].setHighlight(settings); }
258 else if ( entity is Node ) { paint.nodeuis[entity.id].setHighlight(settings); }
261 public function setHighlightOnNodes(way:Way, settings:Object):void {
262 paint.wayuis[way.id].setHighlightOnNodes(settings);
265 public function setPurgable(entity:Entity, purgable:Boolean):void {
266 if ( entity is Way ) {
267 var way:Way=entity as Way;
268 paint.wayuis[way.id].purgable=purgable;
269 for (var i:uint=0; i<way.length; i++) {
270 if (paint.nodeuis[way.getNode(i).id]) {
271 paint.nodeuis[way.getNode(i).id].purgable=purgable;
274 } else if ( entity is Node ) {
275 paint.nodeuis[entity.id].purgable=purgable;
279 // Handle mouse events on ways/nodes
280 private var mapController:MapController = null;
282 public function setController(controller:MapController):void {
283 this.mapController = controller;
286 public function entityMouseEvent(event:MouseEvent, entity:Entity):void {
287 if ( mapController != null )
288 mapController.entityMouseEvent(event, entity);
292 // ------------------------------------------------------------------------------------------
295 public function addVectorLayer(layer:VectorLayer):void {
296 vectorlayers[layer.name]=layer;
297 vectorbg.addChild(layer.paint);
300 // ------------------------------------------------------------------------------------------
301 // Redraw all items, zoom in and out
303 public function updateEntityUIs(redraw:Boolean,remove:Boolean):void {
304 paint.updateEntityUIs(connection.getObjectsByBbox(edge_l, edge_r, edge_t, edge_b), redraw, remove);
305 for each (var v:VectorLayer in vectorlayers) {
306 v.paint.updateEntityUIs(v.getObjectsByBbox(edge_l, edge_r, edge_t, edge_b), redraw, remove);
309 public function redraw():void {
311 for each (var v:VectorLayer in vectorlayers) { v.paint.redraw(); }
313 public function redrawPOIs():void {
315 for each (var v:VectorLayer in vectorlayers) { v.paint.redrawPOIs(); }
318 public function zoomIn():void {
319 if (scale==MAXSCALE) { return; }
320 changeScale(scale+1);
323 public function zoomOut():void {
324 if (scale==MINSCALE) { return; }
325 changeScale(scale-1);
328 private function changeScale(newscale:uint):void {
329 addDebug("new scale "+newscale);
331 scalefactor=MASTERSCALE/Math.pow(2,13-scale);
332 updateCoordsFromLatLon((edge_t+edge_b)/2,(edge_l+edge_r)/2); // recentre
333 tileset.changeScale(scale);
334 updateEntityUIs(true,true);
338 private function reportPosition():void {
339 addDebug("lon "+coord2lon(mouseX)+", lat "+coord2lat(mouseY));
342 public function setStyle(url:String):void {
345 paint.ruleset=new RuleSet(MINSCALE,MAXSCALE,redraw,redrawPOIs);
346 paint.ruleset.loadFromCSS(url);
350 public function setBackground(url:String):void {
352 if (tileset) { tileset.init(url, url!=''); }
355 public function setDimming(dim:Boolean):void {
356 if (tileset) { tileset.setDimming(dim); }
359 // ------------------------------------------------------------------------------------------
360 // Export (experimental)
361 // ** just a bit of fun for now!
362 // really needs to take a bbox, and make sure that the image is correctly cropped/resized
363 // to that area (will probably require creating a new DisplayObject with a different origin
366 public function export():void {
367 addDebug("size is "+this.width+","+this.height);
368 var jpgSource:BitmapData = new BitmapData(800,800); // (this.width, this.height);
369 jpgSource.draw(this);
370 var jpgEncoder:JPGEncoder = new JPGEncoder(85);
371 var jpgStream:ByteArray = jpgEncoder.encode(jpgSource);
372 var fileRef:FileReference = new FileReference();
373 // fileRef.save(jpgStream,'map.jpeg');
378 // ==========================================================================================
381 // ------------------------------------------------------------------------------------------
384 public function set draggable(draggable:Boolean):void {
385 _draggable=draggable;
386 dragstate=NOT_DRAGGING;
389 public function mouseDownHandler(event:MouseEvent):void {
390 if (!_draggable) { return; }
392 lastxmouse=downX=mouseX;
393 lastymouse=downY=mouseY;
396 public function mouseUpHandler(event:MouseEvent=null):void {
397 if (dragstate==DRAGGING) {
399 updateEntityUIs(false, false);
402 dragstate=NOT_DRAGGING;
405 public function mouseMoveHandler(event:MouseEvent):void {
406 if (!_draggable) { return; }
407 if (dragstate==NOT_DRAGGING) { return; }
409 if (dragstate==NOT_MOVED && Math.abs(downX - mouseX) < 3 && Math.abs(downY - mouseY) < 3) {
414 x+=mouseX-lastxmouse;
415 y+=mouseY-lastymouse;
416 lastxmouse=mouseX; lastymouse=mouseY;
420 // ------------------------------------------------------------------------------------------
423 private function everyFrame(event:Event):void {
424 if (tileset) { tileset.serviceQueue(); }
427 // ------------------------------------------------------------------------------------------
428 // Miscellaneous events
430 public function keyUpHandler(event:KeyboardEvent):void {
431 addDebug("pressed "+event.keyCode);
432 if (event.keyCode==33) { zoomIn(); } // Page Up - zoom in
433 if (event.keyCode==34) { zoomOut(); } // Page Down - zoom out
434 // if (event.keyCode==76) { reportPosition(); } // L - report lat/long
437 public function connectionError(err:Object=null): void {
438 addDebug("got error");
441 // ------------------------------------------------------------------------------------------
444 public function clearDebug():void {
445 if (!Globals.vars.hasOwnProperty('debug')) return;
446 Globals.vars.debug.text='';
449 public function addDebug(text:String):void {
450 if (!Globals.vars.hasOwnProperty('debug')) return;
451 if (!Globals.vars.debug.visible) return;
452 Globals.vars.debug.appendText(text+"\n");
453 Globals.vars.debug.scrollV=Globals.vars.debug.maxScrollV;