Various rendering/CSS parsing improvements. Tagged-nodes-in-ways still needs looking...
[potlatch2.git] / net / systemeD / halcyon / Map.as
1 package net.systemeD.halcyon {
2
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.*;
14         import flash.net.*;
15
16     import net.systemeD.halcyon.connection.*;
17     import net.systemeD.halcyon.connection.EntityEvent;
18         import net.systemeD.halcyon.styleparser.*;
19
20 //      for experimental export function:
21 //      import flash.net.FileReference;
22 //      import com.adobe.images.JPGEncoder;
23
24     public class Map extends Sprite {
25
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
30
31                 public var ruleset:RuleSet;                                             // rules
32                 
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();               //  |
37
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;                    //  |
44
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
54
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;                                               //  |
59
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)
64
65                 private var dragging:Boolean=false;                             // dragging map?
66                 private var lastxmouse:Number;                                  //  |
67                 private var lastymouse:Number;                                  //  |
68                 
69                 public var initparams:Object;                                   // object containing 
70
71                 public var backdrop:Object;                                             // reference to backdrop sprite
72                 public var tileset:TileSet;                                             // 900913 tile background
73                 public var showall:Boolean=true;                                // show all objects, even if unstyled?
74                 
75                 public var connection:Connection;                               // server connection
76
77                 public const TILESPRITE:uint=0;
78                 public const GPSSPRITE:uint=1;
79                 public const WAYSPRITE:uint=2;
80                 public const POISPRITE:uint=13;
81                 public const NAMESPRITE:uint=14;
82
83                 // ------------------------------------------------------------------------------------------
84                 // Map constructor function
85
86         public function Map(initparams:Object) {
87
88                         // Add 900913 tile background
89                         tileset=new TileSet(this);
90                         addChild(tileset);
91
92                         // Set up layering
93                         // [layer][3]                   - names
94                         // [layer][2][sublayer] - stroke
95                         // [layer][1]                   - casing
96                         // [layer][0]                   - fill
97
98                         for (var l:int=0; l<13; l++) {                          // 11 layers (11 is +5, 1 is -5)
99                                 var s:Sprite = getHitSprite();          //  |
100                                 s.addChild(getPaintSprite());                   //      | 0 fill
101                                 s.addChild(getPaintSprite());                   //      | 1 casing
102                                 var t:Sprite = getPaintSprite();                //  | 2 stroke
103                                 for (var j:int=0; j<11; j++) {                  //      |  | ten sublayers
104                                         t.addChild(getPaintSprite());           //  |  |  |
105                                 }                                                                               //  |  |  |
106                                 s.addChild(t);                                                  //  |  |
107                                 s.addChild(getPaintSprite());                   //      | 3 names
108                                 s.addChild(getPaintSprite());                   //      | 4 nodes
109                                 s.addChild(getHitSprite());                         //  | 5 entity hit tests
110                                 addChild(s);                                                    //  |
111                         }
112                         addChild(getPaintSprite());                             // 12 - POIs
113                         addChild(getPaintSprite());                             // 13 - shields and POI names
114
115                         this.initparams=initparams;
116                         connection = Connection.getConnection(initparams);
117             connection.addEventListener(Connection.NEW_WAY, newWayCreated);
118             connection.addEventListener(Connection.NEW_POI, newPOICreated);
119                         gotEnvironment(null);
120
121                         addEventListener(Event.ENTER_FRAME, everyFrame);
122         }
123
124         private function getPaintSprite():Sprite {
125             var s:Sprite = new Sprite();
126             s.mouseEnabled = false;
127             s.mouseChildren = false;
128             return s;
129         }
130
131         private function getHitSprite():Sprite {
132             var s:Sprite = new Sprite();
133             return s;
134         }
135
136                 public function gotEnvironment(r:Object):void {
137                         var loader:Loader = new Loader();
138                         loader.contentLoaderInfo.addEventListener(Event.COMPLETE, gotFont);
139                         loader.load(new URLRequest("FontLibrary.swf"));
140                 }
141                 
142                 public function gotFont(r:Event):void {
143                         var FontLibrary:Class = r.target.applicationDomain.getDefinition("FontLibrary") as Class;
144                         Font.registerFont(FontLibrary.DejaVu);
145
146                         if (initparams['lat'] != null) {
147                                 // parameters sent from HTML
148                                 init(initparams['lat'],
149                                          initparams['lon'],
150                                          initparams['zoom'],
151                                          initparams['style']);
152
153                         } else {
154                                 // somewhere innocuous
155                                 init(53.09465,-2.56495,17,"test.css?d="+Math.random());
156                         }
157                 }
158
159                 // ------------------------------------------------------------------------------------------
160                 // Initialise map at a given lat/lon
161
162         public function init(startlat:Number,startlon:Number,startscale:uint,style:String):void {
163                         ruleset=new RuleSet(this,redrawPOIs);
164                         ruleset.loadFromCSS(style);
165                         //updateSize();
166
167                         scale=startscale;
168                         scalefactor=MASTERSCALE/Math.pow(2,13-scale);
169                         baselon    =startlon          -(mapwidth /2)/scalefactor;
170                         basey      =lat2latp(startlat)+(mapheight/2)/scalefactor;
171                         addDebug("Baselon "+baselon+", basey "+basey);
172                         updateCoords(0,0);
173                         download();
174                         
175         }
176
177                 // ------------------------------------------------------------------------------------------
178                 // Recalculate co-ordinates from new Flash origin
179
180                 public function updateCoords(tx:Number,ty:Number):void {
181                         x=tx; y=ty;
182
183                         edge_t=coord2lat(-y          );
184                         edge_b=coord2lat(-y+mapheight);
185                         edge_l=coord2lon(-x          );
186                         edge_r=coord2lon(-x+mapwidth );
187                         addDebug("Lon "+edge_l+"-"+edge_r);
188                         addDebug("Lat "+edge_b+"-"+edge_t);
189
190                         tileset.update();
191                 }
192                 
193                 public function updateCoordsFromLatLon(lat:Number,lon:Number):void {
194                         var cy:Number=-(lat2coord(lat)-mapheight/2);
195                         var cx:Number=-(lon2coord(lon)-mapwidth/2);
196                         updateCoords(cx,cy);
197                 }
198
199
200                 // Co-ordinate conversion functions
201
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; }
206
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)); }
209
210                 public function lat2coord(a:Number):Number      { return -(lat2latp(a)-basey)*scalefactor; }
211                 public function coord2lat(a:Number):Number      { return latp2lat(a/-scalefactor+basey); }
212
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)); }
215
216
217                 // ------------------------------------------------------------------------------------------
218                 // Resize map size based on current stage and height
219
220                 public function updateSize(w:uint, h:uint):void {
221                         mapwidth = w;
222                         mapheight= h;
223             if ( backdrop != null ) {
224                 backdrop.width=mapwidth;
225                 backdrop.height=mapheight;
226             }
227             if ( mask != null ) {
228                 mask.width=mapwidth;
229                 mask.height=mapheight;
230             }
231                 }
232
233                 // ------------------------------------------------------------------------------------------
234                 // Download map data
235                 // (typically from whichways, but will want to add more connections)
236
237                 public function download():void {
238                         this.dispatchEvent(new MapEvent(MapEvent.DOWNLOAD,edge_l,edge_r,edge_t,edge_b));
239                         
240                         if (edge_l>=bigedge_l && edge_r<=bigedge_r &&
241                                 edge_b>=bigedge_b && edge_t<=bigedge_t) { return; }     // we have already loaded this area, so ignore
242                         bigedge_l=edge_l; bigedge_r=edge_r;
243                         bigedge_b=edge_b; bigedge_t=edge_t;
244                         addDebug("Calling with "+edge_l+"-"+edge_r+", "+edge_t+"-"+edge_b);
245                         connection.loadBbox(edge_l,edge_r,edge_t,edge_b);
246                 }
247
248
249
250         private function newWayCreated(event:EntityEvent):void {
251             var way:Way = event.entity as Way;
252                         if (!way.loaded) { return; }
253             ways[way.id] = new WayUI(way, this);
254         }
255
256         private function newPOICreated(event:EntityEvent):void {
257             var node:Node = event.entity as Node;
258             pois[node.id] = new POI(node, this);
259         }
260
261         public function setHighlight(entity:Entity, stateType:String, isOn:Boolean):void {
262             if ( entity is Way ) {
263                 var wayUI:WayUI = ways[entity.id];
264                 if ( wayUI != null )
265                     wayUI.setHighlight(stateType, isOn);
266             }
267         }
268
269         // Handle mouse events on ways/nodes
270         private var mapController:MapController = null;
271
272         public function setController(controller:MapController):void {
273             this.mapController = controller;
274         }
275
276         public function entityMouseEvent(event:MouseEvent, entity:Entity):void {
277             if ( mapController != null )
278                 mapController.entityMouseEvent(event, entity);
279                                 
280         }
281
282                 // ------------------------------------------------------------------------------------------
283                 // Redraw all items, zoom in and out
284                 
285                 public function redraw():void {
286                         for each (var w:WayUI in ways) { w.recalculate(); w.redraw(); }
287                         for each (var p:POI in pois) { p.redraw(); }
288                 }
289
290                 public function redrawPOIs():void {
291                         for each (var p:POI in pois) { p.redraw(); }
292                 }
293
294                 public function zoomIn():void {
295                         if (scale==MAXSCALE) { return; }
296                         changeScale(scale+1);
297                 }
298
299                 public function zoomOut():void {
300                         if (scale==MINSCALE) { return; }
301                         changeScale(scale-1);
302                 }
303
304                 private function changeScale(newscale:uint):void {
305                         addDebug("new scale "+newscale);
306                         scale=newscale;
307                         scalefactor=MASTERSCALE/Math.pow(2,14-scale);
308                         updateCoordsFromLatLon((edge_t+edge_b)/2,(edge_l+edge_r)/2);    // recentre
309                         download();
310                         redraw();
311                 }
312
313                 private function reportPosition():void {
314                         addDebug("lon "+coord2lon(mouseX)+", lat "+coord2lat(mouseY));
315                 }
316
317                 // ------------------------------------------------------------------------------------------
318                 // Export (experimental)
319                 // ** just a bit of fun for now!
320                 // really needs to take a bbox, and make sure that the image is correctly cropped/resized 
321                 // to that area (will probably require creating a new DisplayObject with a different origin
322                 // and mask)
323 /*              
324                 public function export():void {
325                         addDebug("size is "+this.width+","+this.height);
326                         var jpgSource:BitmapData = new BitmapData(800,800); // (this.width, this.height);
327                         jpgSource.draw(this);
328                         var jpgEncoder:JPGEncoder = new JPGEncoder(85);
329                         var jpgStream:ByteArray = jpgEncoder.encode(jpgSource);
330                         var fileRef:FileReference = new FileReference();
331 //                      fileRef.save(jpgStream,'map.jpeg');
332                 }
333
334 */
335
336                 // ==========================================================================================
337                 // Events
338                 
339                 // ------------------------------------------------------------------------------------------
340                 // Mouse events
341                 
342                 public function mouseDownHandler(event:MouseEvent):void {
343                         dragging=true;
344                         lastxmouse=mouseX; lastymouse=mouseY;
345                 }
346         
347                 public function mouseUpHandler(event:MouseEvent):void {
348                         if (!dragging) { return; }
349                         dragging=false;
350                         updateCoords(x,y);
351                         download();
352                 }
353         
354                 public function mouseMoveHandler(event:MouseEvent):void {
355                         if (!dragging) { return; }
356                         x+=mouseX-lastxmouse;
357                         y+=mouseY-lastymouse;
358                         lastxmouse=mouseX; lastymouse=mouseY;
359                 }
360         
361                 // ------------------------------------------------------------------------------------------
362                 // Do every frame
363
364                 private function everyFrame(event:Event):void {
365                         tileset.serviceQueue();
366                 }
367
368                 // ------------------------------------------------------------------------------------------
369                 // Miscellaneous events
370                 
371                 public function keyUpHandler(event:KeyboardEvent):void {
372 // addDebug("pressed "+event.keyCode);
373             if ( !event.ctrlKey ) return;
374                         if (event.keyCode==82) { this.redraw(); }                       // R - redraw
375                         if (event.keyCode==73) { this.zoomIn(); }                       // I - zoom in
376                         if (event.keyCode==79) { this.zoomOut(); }                      // O - zoom out
377                         if (event.keyCode==76) { this.reportPosition(); }       // L - report lat/long
378 //                      if (event.keyCode==69) { this.export(); }                       // E - export
379                 }
380
381                 public function connectionError(err:Object=null): void {
382                         addDebug("got error"); 
383                 }
384
385                 // ------------------------------------------------------------------------------------------
386                 // Debugging
387                 
388                 public function addDebug(text:String):void {
389                         if (!Globals.vars.hasOwnProperty('debug')) return;
390                         if (!Globals.vars.debug.visible) return;
391                         Globals.vars.debug.appendText(text+"\n");
392                         Globals.vars.debug.scrollV=Globals.vars.debug.maxScrollV;
393                 }
394                 
395         }
396 }