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.*;
20 // for experimental export function:
21 // import flash.net.FileReference;
22 // import com.adobe.images.JPGEncoder;
24 public class Map extends Sprite {
26 public const MASTERSCALE:Number=5825.4222222222;// master map scale - how many Flash pixels in 1 degree longitude
27 // (for Landsat, 5120)
28 public const MINSCALE:uint=13; // don't zoom out past this
29 public const MAXSCALE:uint=19; // don't zoom in past this
31 public var ruleset:RuleSet; // rules
33 public var ways:Object=new Object(); // geodata
34 public var nodes:Object=new Object(); // |
35 public var pois:Object=new Object(); // |
36 public var relations:Object=new Object(); // |
38 public var scale:uint=14; // map scale
39 public var scalefactor:Number=MASTERSCALE; // current scaling factor for lon/latp
40 public var bigedge_l:Number= 999999; // area of largest whichways
41 public var bigedge_r:Number=-999999; // |
42 public var bigedge_b:Number= 999999; // |
43 public var bigedge_t:Number=-999999; // |
45 public var waycount:uint=0; // ways: number currently loaded
46 public var waysrequested:uint=0; // total number requested
47 public var waysreceived:uint=0; // total number received
48 public var relcount:uint=0; // relations: number currently loaded
49 public var relsrequested:uint=0; // total number requested
50 public var relsreceived:uint=0; // total number received
51 public var poicount:uint=0; // POIs: number currently loaded
52 public var whichrequested:uint=0; // whichways: total number requested
53 public var whichreceived:uint=0; // total number received
55 public var edge_l:Number; // current bounding box
56 public var edge_r:Number; // |
57 public var edge_t:Number; // |
58 public var edge_b: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 private var dragging:Boolean=false; // dragging map?
66 private var lastxmouse:Number; // |
67 private var lastymouse:Number; // |
69 public var initparams:Object; // object containing
71 public var backdrop:Object; // reference to backdrop sprite
72 public var showall:Boolean=true; // show all objects, even if unstyled?
74 public var connection:Connection; // server connection
76 // ------------------------------------------------------------------------------------------
77 // Map constructor function
79 public function Map(initparams:Object) {
83 // [layer][1][sublayer] - stroke
86 for (var l:int=0; l<13; l++) { // 11 layers (10 is +5, 0 is -5)
87 var s:Sprite = getHitSprite(); // |
88 s.addChild(getPaintSprite()); // | 0 fill
89 var t:Sprite = getPaintSprite(); // | 1 stroke
90 for (var j:int=0; j<11; j++) { // | | ten sublayers
91 t.addChild(getPaintSprite()); // | | |
94 s.addChild(getPaintSprite()); // | 2 names
95 s.addChild(getHitSprite()); // | 3 entity hit tests
98 addChild(getPaintSprite()); // 11 - POIs
99 addChild(getPaintSprite()); // 12 - shields and POI names
101 this.initparams=initparams;
102 connection = Connection.getConnection(initparams);
103 connection.addEventListener(Connection.NEW_WAY, newWayCreated);
104 connection.addEventListener(Connection.NEW_POI, newPOICreated);
105 gotEnvironment(null);
108 private function getPaintSprite():Sprite {
109 var s:Sprite = new Sprite();
110 s.mouseEnabled = false;
111 s.mouseChildren = false;
115 private function getHitSprite():Sprite {
116 var s:Sprite = new Sprite();
120 public function gotEnvironment(r:Object):void {
121 var loader:Loader = new Loader();
122 loader.contentLoaderInfo.addEventListener(Event.COMPLETE, gotFont);
123 loader.load(new URLRequest("FontLibrary.swf"));
126 public function gotFont(r:Event):void {
127 var FontLibrary:Class = r.target.applicationDomain.getDefinition("FontLibrary") as Class;
128 Font.registerFont(FontLibrary.DejaVu);
130 if (initparams['lat'] != null) {
131 // parameters sent from HTML
132 init(initparams['lat'],
135 initparams['style']);
138 // somewhere innocuous
139 init(53.09465,-2.56495,17,"test.css?d="+Math.random());
143 // ------------------------------------------------------------------------------------------
144 // Initialise map at a given lat/lon
146 public function init(startlat:Number,startlon:Number,startscale:uint,style:String):void {
147 ruleset=new RuleSet(this,redrawPOIs);
148 ruleset.loadFromCSS(style);
152 scalefactor=MASTERSCALE/Math.pow(2,14-scale);
153 baselon =startlon -(mapwidth /2)/scalefactor;
154 basey =lat2latp(startlat)+(mapheight/2)/scalefactor;
155 addDebug("Baselon "+baselon+", basey "+basey);
161 // ------------------------------------------------------------------------------------------
162 // Recalculate co-ordinates from new Flash origin
164 public function updateCoords(tx:Number,ty:Number):void {
167 // ** calculate tile_l etc.
168 edge_t=coord2lat(-y );
169 edge_b=coord2lat(-y+mapheight);
170 edge_l=coord2lon(-x );
171 edge_r=coord2lon(-x+mapwidth );
172 addDebug("Lon "+edge_l+"-"+edge_r);
173 addDebug("Lat "+edge_b+"-"+edge_t);
176 public function updateCoordsFromLatLon(lat:Number,lon:Number):void {
177 var cy:Number=-(lat2coord(lat)-mapheight/2);
178 var cx:Number=-(lon2coord(lon)-mapwidth/2);
183 // Co-ordinate conversion functions
185 public function latp2coord(a:Number):Number { return -(a-basey)*scalefactor; }
186 public function coord2latp(a:Number):Number { return a/-scalefactor+basey; }
187 public function lon2coord(a:Number):Number { return (a-baselon)*scalefactor; }
188 public function coord2lon(a:Number):Number { return a/scalefactor+baselon; }
190 public function latp2lat(a:Number):Number { return 180/Math.PI * (2 * Math.atan(Math.exp(a*Math.PI/180)) - Math.PI/2); }
191 public function lat2latp(a:Number):Number { return 180/Math.PI * Math.log(Math.tan(Math.PI/4+a*(Math.PI/180)/2)); }
193 public function lat2coord(a:Number):Number { return -(lat2latp(a)-basey)*scalefactor; }
194 public function coord2lat(a:Number):Number { return latp2lat(a/-scalefactor+basey); }
196 // public function centrelat(o) { return coord2lat((yradius-_root.map._y-o)/Math.pow(2,_root.scale-13)); }
197 // public function centrelon(o) { return coord2lon((xradius-_root.map._x-o)/Math.pow(2,_root.scale-13)); }
200 // ------------------------------------------------------------------------------------------
201 // Resize map size based on current stage and height
203 public function updateSize(w:uint, h:uint):void {
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,edge_l,edge_r,edge_t,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 addDebug("Calling with "+edge_l+"-"+edge_r+", "+edge_t+"-"+edge_b);
228 connection.loadBbox(edge_l,edge_r,edge_t,edge_b);
233 private function newWayCreated(event:EntityEvent):void {
234 var way:Way = event.entity as Way;
235 if (!way.loaded) { return; }
236 ways[way.id] = new WayUI(way, this);
239 private function newPOICreated(event:EntityEvent):void {
240 var node:Node = event.entity as Node;
241 pois[node.id] = new POI(node, this);
244 public function setHighlight(entity:Entity, stateType:String, isOn:Boolean):void {
245 if ( entity is Way ) {
246 var wayUI:WayUI = ways[entity.id];
248 wayUI.setHighlight(stateType, isOn);
252 // Handle mouse events on ways/nodes
253 private var mapController:MapController = null;
255 public function setController(controller:MapController):void {
256 this.mapController = controller;
259 public function entityMouseEvent(event:MouseEvent, entity:Entity):void {
260 if ( mapController != null )
261 mapController.entityMouseEvent(event, entity);
265 // ------------------------------------------------------------------------------------------
266 // Redraw all items, zoom in and out
268 public function redraw():void {
269 for each (var w:WayUI in ways) { w.recalculate(); w.redraw(); }
270 for each (var p:POI in pois) { p.redraw(); }
273 public function redrawPOIs():void {
274 for each (var p:POI in pois) { p.redraw(); }
277 public function zoomIn():void {
278 if (scale==MAXSCALE) { return; }
279 changeScale(scale+1);
282 public function zoomOut():void {
283 if (scale==MINSCALE) { return; }
284 changeScale(scale-1);
287 private function changeScale(newscale:uint):void {
288 addDebug("new scale "+newscale);
290 scalefactor=MASTERSCALE/Math.pow(2,14-scale);
291 updateCoordsFromLatLon((edge_t+edge_b)/2,(edge_l+edge_r)/2); // recentre
296 private function reportPosition():void {
297 addDebug("lon "+coord2lon(mouseX)+", lat "+coord2lat(mouseY));
300 // ------------------------------------------------------------------------------------------
301 // Export (experimental)
302 // ** just a bit of fun for now!
303 // really needs to take a bbox, and make sure that the image is correctly cropped/resized
304 // to that area (will probably require creating a new DisplayObject with a different origin
307 public function export():void {
308 addDebug("size is "+this.width+","+this.height);
309 var jpgSource:BitmapData = new BitmapData(800,800); // (this.width, this.height);
310 jpgSource.draw(this);
311 var jpgEncoder:JPGEncoder = new JPGEncoder(85);
312 var jpgStream:ByteArray = jpgEncoder.encode(jpgSource);
313 var fileRef:FileReference = new FileReference();
314 // fileRef.save(jpgStream,'map.jpeg');
319 // ==========================================================================================
322 // ------------------------------------------------------------------------------------------
325 public function mouseDownHandler(event:MouseEvent):void {
327 lastxmouse=mouseX; lastymouse=mouseY;
330 public function mouseUpHandler(event:MouseEvent):void {
331 if (!dragging) { return; }
337 public function mouseMoveHandler(event:MouseEvent):void {
338 if (!dragging) { return; }
339 x+=mouseX-lastxmouse;
340 y+=mouseY-lastymouse;
341 lastxmouse=mouseX; lastymouse=mouseY;
344 // ------------------------------------------------------------------------------------------
345 // Miscellaneous events
347 public function keyUpHandler(event:KeyboardEvent):void {
348 // addDebug("pressed "+event.keyCode);
349 if ( !event.ctrlKey ) return;
350 if (event.keyCode==82) { this.redraw(); } // R - redraw
351 if (event.keyCode==73) { this.zoomIn(); } // I - zoom in
352 if (event.keyCode==79) { this.zoomOut(); } // O - zoom out
353 if (event.keyCode==76) { this.reportPosition(); } // L - report lat/long
354 // if (event.keyCode==69) { this.export(); } // E - export
357 public function connectionError(err:Object=null): void {
358 addDebug("got error");
361 // ------------------------------------------------------------------------------------------
364 public function addDebug(text:String):void {
365 if (!Globals.vars.hasOwnProperty('debug')) return;
366 if (!Globals.vars.debug.visible) return;
367 Globals.vars.debug.appendText(text+"\n");
368 Globals.vars.debug.scrollV=Globals.vars.debug.maxScrollV;