1 package net.systemeD.halcyon {
3 import flash.text.TextField;
4 import flash.display.DisplayObjectContainer;
5 import flash.display.Sprite;
6 import flash.display.Shape;
7 import flash.display.Stage;
11 import net.systemeD.halcyon.connection.*;
12 import net.systemeD.halcyon.connection.EntityEvent;
13 import net.systemeD.halcyon.styleparser.*;
15 public class Map extends Sprite {
17 public const MASTERSCALE:Number=5825.4222222222;// master map scale - how many Flash pixels in 1 degree longitude
18 // (for Landsat, 5120)
19 public const MINSCALE:uint=13; // don't zoom out past this
20 public const MAXSCALE:uint=19; // don't zoom in past this
22 public var ruleset:RuleSet=new RuleSet(redrawPOIs); // rules
24 public var ways:Object=new Object(); // geodata
25 public var nodes:Object=new Object(); // |
26 public var pois:Object=new Object(); // |
27 public var relations:Object=new Object(); // |
29 public var scale:uint=14; // map scale
30 public var scalefactor:Number=MASTERSCALE; // current scaling factor for lon/latp
31 public var bigedge_l:Number= 999999; // area of largest whichways
32 public var bigedge_r:Number=-999999; // |
33 public var bigedge_b:Number= 999999; // |
34 public var bigedge_t:Number=-999999; // |
36 public var waycount:uint=0; // ways: number currently loaded
37 public var waysrequested:uint=0; // total number requested
38 public var waysreceived:uint=0; // total number received
39 public var relcount:uint=0; // relations: number currently loaded
40 public var relsrequested:uint=0; // total number requested
41 public var relsreceived:uint=0; // total number received
42 public var poicount:uint=0; // POIs: number currently loaded
43 public var whichrequested:uint=0; // whichways: total number requested
44 public var whichreceived:uint=0; // total number received
46 public var edge_l:Number; // current bounding box
47 public var edge_r:Number; // |
48 public var edge_t:Number; // |
49 public var edge_b:Number; // |
51 public var baselon:Number; // urllon-xradius/masterscale;
52 public var basey:Number; // lat2lat2p(urllat)+yradius/masterscale;
53 public var mapwidth:uint; // width (Flash pixels)
54 public var mapheight:uint; // height (Flash pixels)
56 private var dragging:Boolean=false; // dragging map?
57 private var lastxmouse:Number; // |
58 private var lastymouse:Number; // |
60 public var backdrop:Object; // reference to backdrop sprite
62 public var connection:Connection; // server connection
64 // ------------------------------------------------------------------------------------------
65 // Map constructor function
67 public function Map() {
71 // [layer][1][sublayer] - stroke
74 for (var l:int=0; l<13; l++) { // 11 layers (10 is +5, 0 is -5)
75 var s:Sprite=new Sprite(); // |
76 s.addChild(new Sprite()); // | 0 fill
77 var t:Sprite=new Sprite(); // | 1 stroke
78 for (var j:int=0; j<11; j++) { // | | ten sublayers
79 t.addChild(new Sprite()); // | | |
82 s.addChild(new Sprite()); // | 2 names
85 s=new Sprite(); addChild(s); // 11 - POIs
86 s=new Sprite(); addChild(s); // 12 - shields and POI names
88 connection= Connection.getConnection();
89 connection.addEventListener(Connection.NEW_WAY, newWayCreated);
90 connection.addEventListener(Connection.NEW_POI, newPOICreated);
91 connection.getEnvironment(new Responder(gotEnvironment,connectionError));
95 public function gotEnvironment(r:Object):void {
96 init(53.09465,-2.56495,17);
99 // ------------------------------------------------------------------------------------------
100 // Initialise map at a given lat/lon
102 public function init(startlat:Number,startlon:Number,startscale:uint):void {
104 ruleset.load("test.yaml?d="+Math.random());
105 // rules.initExample(); // initialise dummy rules
110 scalefactor=MASTERSCALE/Math.pow(2,14-scale);
111 baselon =startlon -(mapwidth /2)/scalefactor;
112 basey =lat2latp(startlat)+(mapheight/2)/scalefactor;
113 addDebug("Baselon "+baselon+", basey "+basey);
119 // ------------------------------------------------------------------------------------------
120 // Recalculate co-ordinates from new Flash origin
122 public function updateCoords(tx:Number,ty:Number):void {
125 // ** calculate tile_l etc.
126 edge_t=coord2lat(-y );
127 edge_b=coord2lat(-y+mapheight);
128 edge_l=coord2lon(-x );
129 edge_r=coord2lon(-x+mapwidth );
130 addDebug("Lon "+edge_l+"-"+edge_r);
131 addDebug("Lat "+edge_b+"-"+edge_t);
134 public function updateCoordsFromLatLon(lat:Number,lon:Number):void {
135 var cy:Number=-(lat2coord(lat)-mapheight/2);
136 var cx:Number=-(lon2coord(lon)-mapwidth/2);
141 // Co-ordinate conversion functions
143 public function latp2coord(a:Number):Number { return -(a-basey)*scalefactor; }
144 public function coord2latp(a:Number):Number { return a/-scalefactor+basey; }
145 public function lon2coord(a:Number):Number { return (a-baselon)*scalefactor; }
146 public function coord2lon(a:Number):Number { return a/scalefactor+baselon; }
148 public function latp2lat(a:Number):Number { return 180/Math.PI * (2 * Math.atan(Math.exp(a*Math.PI/180)) - Math.PI/2); }
149 public function lat2latp(a:Number):Number { return 180/Math.PI * Math.log(Math.tan(Math.PI/4+a*(Math.PI/180)/2)); }
151 public function lat2coord(a:Number):Number { return -(lat2latp(a)-basey)*scalefactor; }
152 public function coord2lat(a:Number):Number { return latp2lat(a/-scalefactor+basey); }
154 // public function centrelat(o) { return coord2lat((yradius-_root.map._y-o)/Math.pow(2,_root.scale-13)); }
155 // public function centrelon(o) { return coord2lon((xradius-_root.map._x-o)/Math.pow(2,_root.scale-13)); }
158 // ------------------------------------------------------------------------------------------
159 // Resize map size based on current stage and height
161 public function updateSize():void {
162 mapwidth =stage.stageWidth; backdrop.width=mapwidth; mask.width=mapwidth;
163 mapheight=stage.stageHeight; backdrop.height=mapheight; mask.height=mapheight;
166 // ------------------------------------------------------------------------------------------
168 // (typically from whichways, but will want to add more connections)
170 public function download():void {
171 var e:MapEvent = new MapEvent("download",edge_l,edge_r,edge_t,edge_b);
172 this.dispatchEvent(e);
174 if (edge_l>=bigedge_l && edge_r<=bigedge_r &&
175 edge_b>=bigedge_b && edge_t<=bigedge_t) { return; } // we have already loaded this area, so ignore
176 bigedge_l=edge_l; bigedge_r=edge_r;
177 bigedge_b=edge_b; bigedge_t=edge_t;
178 addDebug("Calling with "+edge_l+"-"+edge_r+", "+edge_t+"-"+edge_b);
179 connection.loadBbox(edge_l,edge_r,edge_t,edge_b);
183 public function gotBbox(r:Object):void {
184 addDebug("got whichways");
185 var code:uint =r.shift(); if (code) { connectionError(); return; }
186 var message:String =r.shift();
187 var waylist:Array =r[0];
188 var pointlist:Array =r[1];
189 var relationlist:Array=r[2];
192 for each (var w:Array in waylist) {
194 if (ways[i] && ways[i].version==v) { continue; }
195 ways[i]=new Way(i,v,this);
196 ways[i].load(connection);
199 for each (var p:Array in pointlist) {
201 if (pois[i] && pois[i].version==v) { continue; }
202 pois[i]=new POI(i,v,p[1],p[2],p[3],this);
205 addDebug("waylist is "+waylist);
209 private function newWayCreated(event:EntityEvent):void {
210 var way:Way = event.entity as Way;
211 ways[way.id] = new WayUI(way, this);
214 private function newPOICreated(event:EntityEvent):void {
215 var node:Node = event.entity as Node;
216 pois[node.id] = new POI(node, this);
219 // ------------------------------------------------------------------------------------------
220 // Redraw all items, zoom in and out
222 public function redraw():void {
223 for each (var w:WayUI in ways) { w.recalculate(); w.redraw(); }
224 for each (var p:POI in pois) { p.redraw(); }
227 public function redrawPOIs():void {
228 for each (var p:POI in pois) { p.redraw(); }
231 public function zoomIn():void {
232 if (scale==MAXSCALE) { return; }
233 changeScale(scale+1);
236 public function zoomOut():void {
237 if (scale==MINSCALE) { return; }
238 changeScale(scale-1);
241 private function changeScale(newscale:uint):void {
242 addDebug("new scale "+newscale);
244 scalefactor=MASTERSCALE/Math.pow(2,14-scale);
245 updateCoordsFromLatLon((edge_t+edge_b)/2,(edge_l+edge_r)/2); // recentre
250 private function reportPosition():void {
251 addDebug("lon "+coord2lon(mouseX)+", lat "+coord2lat(mouseY));
255 // ==========================================================================================
258 // ------------------------------------------------------------------------------------------
261 public function mouseDownHandler(event:MouseEvent):void {
263 lastxmouse=mouseX; lastymouse=mouseY;
266 public function mouseUpHandler(event:MouseEvent):void {
267 if (!dragging) { return; }
273 public function mouseMoveHandler(event:MouseEvent):void {
274 if (!dragging) { return; }
275 x+=mouseX-lastxmouse;
276 y+=mouseY-lastymouse;
277 lastxmouse=mouseX; lastymouse=mouseY;
280 // ------------------------------------------------------------------------------------------
281 // Miscellaneous events
283 public function keyUpHandler(event:KeyboardEvent):void {
284 // addDebug("pressed "+event.keyCode);
285 if (event.keyCode==82) { this.redraw(); } // R - redraw
286 if (event.keyCode==73) { this.zoomIn(); } // I - zoom in
287 if (event.keyCode==79) { this.zoomOut(); } // O - zoom out
288 if (event.keyCode==76) { this.reportPosition(); } // L - report lat/long
291 public function connectionError(err:Object=null): void {
292 addDebug("got error");
295 // ------------------------------------------------------------------------------------------
298 public function addDebug(text:String):void {
299 Globals.vars.debug.appendText(text+"\n");
300 Globals.vars.debug.scrollV=Globals.vars.debug.maxScrollV;