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 waycount:uint=0; // ways: number currently loaded
44 public var waysrequested:uint=0; // total number requested
45 public var waysreceived:uint=0; // total number received
46 public var relcount:uint=0; // relations: number currently loaded
47 public var relsrequested:uint=0; // total number requested
48 public var relsreceived:uint=0; // total number received
49 public var poicount:uint=0; // POIs: number currently loaded
50 public var whichrequested:uint=0; // whichways: total number requested
51 public var whichreceived:uint=0; // total number received
53 public var edge_l:Number; // current bounding box
54 public var edge_r:Number; // |
55 public var edge_t:Number; // |
56 public var edge_b:Number; // |
57 public var centre_lat:Number; // centre lat/lon
58 public var centre_lon:Number; // |
60 public var baselon:Number; // urllon-xradius/masterscale;
61 public var basey:Number; // lat2lat2p(urllat)+yradius/masterscale;
62 public var mapwidth:uint; // width (Flash pixels)
63 public var mapheight:uint; // height (Flash pixels)
65 public var dragstate:uint=NOT_DRAGGING; // dragging map
66 private var lastxmouse:Number; // |
67 private var lastymouse:Number; // |
68 private var downX:Number; // |
69 private var downY:Number; // |
70 public const NOT_DRAGGING:uint=0; // |
71 public const NOT_MOVED:uint=1; // |
72 public const DRAGGING:uint=2; // |
74 public var initparams:Object; // object containing HTML page parameters
76 public var backdrop:Object; // reference to backdrop sprite
77 public var tileset:TileSet; // 900913 tile background
78 public var showall:Boolean=true; // show all objects, even if unstyled?
80 public var connection:Connection; // server connection
81 public var vectorlayers:Array=[]; // VectorLayer objects
83 public const TILESPRITE:uint=0;
84 public const VECTORSPRITE:uint=1;
85 public const WAYSPRITE:uint=2;
86 public const NAMESPRITE:uint=13;
88 // ------------------------------------------------------------------------------------------
89 // Map constructor function
91 public function Map(initparams:Object) {
93 this.initparams=initparams;
94 connection = Connection.getConnection(initparams);
95 connection.addEventListener(Connection.NEW_WAY, newWayCreated);
96 connection.addEventListener(Connection.NEW_POI, newPOICreated);
97 connection.addEventListener(Connection.WAY_RENUMBERED, wayRenumbered);
98 connection.addEventListener(Connection.NODE_RENUMBERED, nodeRenumbered);
101 addEventListener(Event.ENTER_FRAME, everyFrame);
104 public function gotEnvironment(r:Object):void {
105 var loader:Loader = new Loader();
106 loader.contentLoaderInfo.addEventListener(Event.COMPLETE, gotFont);
107 loader.load(new URLRequest("FontLibrary.swf"));
110 public function gotFont(r:Event):void {
111 var FontLibrary:Class = r.target.applicationDomain.getDefinition("FontLibrary") as Class;
112 Font.registerFont(FontLibrary.DejaVu);
114 if (initparams['lat'] != null) {
115 // parameters sent from HTML
116 init(initparams['lat'],
120 initparams['tileurl']);
123 // somewhere innocuous
124 init(53.09465,-2.56495,17,"test.css?d="+Math.random(),"");
128 // ------------------------------------------------------------------------------------------
129 // Initialise map at a given lat/lon
131 public function init(startlat:Number,startlon:Number,startscale:uint=0,style:String=null,tileurl:String=''):void {
132 while (numChildren) { removeChildAt(0); }
134 tileset=new TileSet(this); // 0 - 900913 background
135 addChild(tileset); // |
136 tileset.init(tileurl);
138 vectorbg = new Sprite(); // 1 - vector background layers
139 addChild(vectorbg); // |
141 paint = new MapPaint(this,-5,5); // 2 - core paint object
142 addChild(paint); // |
143 paint.isBackground=false; // |
146 paint.ruleset=new RuleSet(MINSCALE,MAXSCALE,redraw,redrawPOIs);
147 paint.ruleset.loadFromCSS(style);
149 if (startscale>0) { scale=startscale; }
151 scalefactor=MASTERSCALE/Math.pow(2,13-scale);
152 baselon =startlon -(mapwidth /2)/scalefactor;
153 basey =lat2latp(startlat)+(mapheight/2)/scalefactor;
154 addDebug("Baselon "+baselon+", basey "+basey);
160 // ------------------------------------------------------------------------------------------
161 // Recalculate co-ordinates from new Flash origin
163 public function updateCoords(tx:Number,ty:Number):void {
166 edge_t=coord2lat(-y );
167 edge_b=coord2lat(-y+mapheight);
168 edge_l=coord2lon(-x );
169 edge_r=coord2lon(-x+mapwidth );
175 public function updateCoordsFromLatLon(lat:Number,lon:Number):void {
176 var cy:Number=-(lat2coord(lat)-mapheight/2);
177 var cx:Number=-(lon2coord(lon)-mapwidth/2);
181 private function setCentre():void {
182 centre_lat=coord2lat(-y+mapheight/2);
183 centre_lon=coord2lon(-x+mapwidth/2);
184 this.dispatchEvent(new MapEvent(MapEvent.MOVE, {lat:centre_lat, lon:centre_lon, scale:scale}));
187 // Co-ordinate conversion functions
189 public function latp2coord(a:Number):Number { return -(a-basey)*scalefactor; }
190 public function coord2latp(a:Number):Number { return a/-scalefactor+basey; }
191 public function lon2coord(a:Number):Number { return (a-baselon)*scalefactor; }
192 public function coord2lon(a:Number):Number { return a/scalefactor+baselon; }
194 public function latp2lat(a:Number):Number { return 180/Math.PI * (2 * Math.atan(Math.exp(a*Math.PI/180)) - Math.PI/2); }
195 public function lat2latp(a:Number):Number { return 180/Math.PI * Math.log(Math.tan(Math.PI/4+a*(Math.PI/180)/2)); }
197 public function lat2coord(a:Number):Number { return -(lat2latp(a)-basey)*scalefactor; }
198 public function coord2lat(a:Number):Number { return latp2lat(a/-scalefactor+basey); }
200 // public function centrelat(o) { return coord2lat((yradius-_root.map._y-o)/Math.pow(2,_root.scale-13)); }
201 // public function centrelon(o) { return coord2lon((xradius-_root.map._x-o)/Math.pow(2,_root.scale-13)); }
204 // ------------------------------------------------------------------------------------------
205 // Resize map size based on current stage and height
207 public function updateSize(w:uint, h:uint):void {
208 this.dispatchEvent(new MapEvent(MapEvent.RESIZE, {width:w, height:h}));
212 if ( backdrop != null ) {
213 backdrop.width=mapwidth;
214 backdrop.height=mapheight;
216 if ( mask != null ) {
218 mask.height=mapheight;
222 // ------------------------------------------------------------------------------------------
224 // (typically from whichways, but will want to add more connections)
226 public function download():void {
227 this.dispatchEvent(new MapEvent(MapEvent.DOWNLOAD, {minlon:edge_l, maxlon:edge_r, maxlat:edge_t, minlat:edge_b} ));
229 if (edge_l>=bigedge_l && edge_r<=bigedge_r &&
230 edge_b>=bigedge_b && edge_t<=bigedge_t) { return; } // we have already loaded this area, so ignore
231 bigedge_l=edge_l; bigedge_r=edge_r;
232 bigedge_b=edge_b; bigedge_t=edge_t;
233 if (connection.waycount>1000) {
234 connection.purgeOutside(edge_l,edge_r,edge_t,edge_b);
236 addDebug("Calling download with "+edge_l+"-"+edge_r+", "+edge_t+"-"+edge_b);
237 connection.loadBbox(edge_l,edge_r,edge_t,edge_b);
240 private function newWayCreated(event:EntityEvent):void {
241 var way:Way = event.entity as Way;
242 if (!way.loaded) { return; }
243 paint.createWayUI(way);
246 private function newPOICreated(event:EntityEvent):void {
247 var node:Node = event.entity as Node;
248 var nodeui:NodeUI=paint.createNodeUI(node);
252 private function wayRenumbered(event:EntityRenumberedEvent):void {
253 var way:Way = event.entity as Way;
254 paint.renumberWayUI(way,event.oldID);
257 private function nodeRenumbered(event:EntityRenumberedEvent):void {
258 var node:Node = event.entity as Node;
259 paint.renumberNodeUI(node,event.oldID);
262 public function setHighlight(entity:Entity, settings:Object):void {
263 var stateType:String;
264 var ui:EntityUI=null;
265 if ( entity is Way ) { ui = paint.wayuis[entity.id]; }
266 else if ( entity is Node ) { ui = paint.nodeuis[entity.id]; }
267 if (ui==null) { return; }
268 for (stateType in settings) {
269 ui.setHighlight(stateType, settings[stateType]);
274 // Handle mouse events on ways/nodes
275 private var mapController:MapController = null;
277 public function setController(controller:MapController):void {
278 this.mapController = controller;
281 public function entityMouseEvent(event:MouseEvent, entity:Entity):void {
282 if ( mapController != null )
283 mapController.entityMouseEvent(event, entity);
287 // ------------------------------------------------------------------------------------------
288 // Redraw all items, zoom in and out
290 public function redraw():void {
292 for each (var v:VectorLayer in vectorlayers) { v.paint.redraw(); }
294 public function redrawPOIs():void {
296 for each (var v:VectorLayer in vectorlayers) { v.paint.redrawPOIs(); }
299 public function zoomIn():void {
300 if (scale==MAXSCALE) { return; }
301 changeScale(scale+1);
304 public function zoomOut():void {
305 if (scale==MINSCALE) { return; }
306 changeScale(scale-1);
309 private function changeScale(newscale:uint):void {
310 addDebug("new scale "+newscale);
312 scalefactor=MASTERSCALE/Math.pow(2,13-scale);
313 updateCoordsFromLatLon((edge_t+edge_b)/2,(edge_l+edge_r)/2); // recentre
314 tileset.changeScale(scale);
319 private function reportPosition():void {
320 addDebug("lon "+coord2lon(mouseX)+", lat "+coord2lat(mouseY));
323 public function setStyle(style:String):void {
325 paint.ruleset=new RuleSet(MINSCALE,MAXSCALE,redraw,redrawPOIs);
326 paint.ruleset.loadFromCSS(style);
330 // ------------------------------------------------------------------------------------------
331 // Export (experimental)
332 // ** just a bit of fun for now!
333 // really needs to take a bbox, and make sure that the image is correctly cropped/resized
334 // to that area (will probably require creating a new DisplayObject with a different origin
337 public function export():void {
338 addDebug("size is "+this.width+","+this.height);
339 var jpgSource:BitmapData = new BitmapData(800,800); // (this.width, this.height);
340 jpgSource.draw(this);
341 var jpgEncoder:JPGEncoder = new JPGEncoder(85);
342 var jpgStream:ByteArray = jpgEncoder.encode(jpgSource);
343 var fileRef:FileReference = new FileReference();
344 // fileRef.save(jpgStream,'map.jpeg');
349 // ==========================================================================================
352 // ------------------------------------------------------------------------------------------
355 public function mouseDownHandler(event:MouseEvent):void {
357 lastxmouse=downX=mouseX;
358 lastymouse=downY=mouseY;
361 public function mouseUpHandler(event:MouseEvent):void {
362 if (dragstate==DRAGGING) {
366 dragstate=NOT_DRAGGING;
369 public function mouseMoveHandler(event:MouseEvent):void {
370 if (dragstate==NOT_DRAGGING) {
374 if (dragstate==NOT_MOVED && Math.abs(downX - mouseX) < 3 && Math.abs(downY - mouseY) < 3) {
379 x+=mouseX-lastxmouse;
380 y+=mouseY-lastymouse;
381 lastxmouse=mouseX; lastymouse=mouseY;
385 // ------------------------------------------------------------------------------------------
388 private function everyFrame(event:Event):void {
389 if (tileset) { tileset.serviceQueue(); }
392 // ------------------------------------------------------------------------------------------
393 // Miscellaneous events
395 public function keyUpHandler(event:KeyboardEvent):void {
396 if ( !event.ctrlKey ) return;
397 addDebug("pressed "+event.keyCode);
398 if (event.keyCode==82) { redraw(); } // R - redraw
399 if (event.keyCode==73) { zoomIn(); } // I - zoom in
400 if (event.keyCode==79) { zoomOut(); } // O - zoom out
401 if (event.keyCode==76) { reportPosition(); } // L - report lat/long
404 public function connectionError(err:Object=null): void {
405 addDebug("got error");
408 // ------------------------------------------------------------------------------------------
411 public function addDebug(text:String):void {
412 if (!Globals.vars.hasOwnProperty('debug')) return;
413 if (!Globals.vars.debug.visible) return;
414 Globals.vars.debug.appendText(text+"\n");
415 Globals.vars.debug.scrollV=Globals.vars.debug.maxScrollV;