1 package net.systemeD.halcyon {
3 import flash.display.*;
4 import flash.geom.Matrix;
5 import flash.geom.Point;
6 import flash.geom.Rectangle;
7 import flash.text.AntiAliasType;
8 import flash.text.GridFitType;
9 import flash.text.TextField;
10 import flash.text.TextFormat;
11 import flash.events.*;
12 import net.systemeD.halcyon.styleparser.*;
13 import net.systemeD.halcyon.connection.*;
18 public var pathlength:Number; // length of path
19 public var patharea:Number; // area of path
20 public var centroid_x:Number; // centroid
21 public var centroid_y:Number; // |
22 public var layer:int=0; // map layer
23 public var map:Map; // reference to parent map
24 public var sprites:Array=new Array(); // instances in display list
25 private var stateClasses:Object = new Object();
26 private var hitzone:Sprite;
27 private var listenSprite:Sprite;
29 public static const DEFAULT_TEXTFIELD_PARAMS:Object = {
31 antiAliasType: AntiAliasType.ADVANCED,
32 gridFitType: GridFitType.NONE
34 public var nameformat:TextFormat;
37 public function WayUI(way:Way, map:Map) {
41 way.addEventListener(Connection.TAG_CHANGE, wayTagChanged);
42 way.addEventListener(Connection.WAY_NODE_ADDED, wayNodeAdded);
43 way.addEventListener(Connection.WAY_NODE_REMOVED, wayNodeRemoved);
44 attachNodeListeners();
47 private function attachNodeListeners():void {
48 for (var i:uint = 0; i < way.length; i++ ) {
49 way.getNode(i).addEventListener(Connection.NODE_MOVED, nodeMoved);
53 private function wayNodeAdded(event:WayNodeEvent):void {
54 event.node.addEventListener(Connection.NODE_MOVED, nodeMoved);
58 private function wayNodeRemoved(event:WayNodeEvent):void {
59 event.node.removeEventListener(Connection.NODE_MOVED, nodeMoved);
63 private function wayTagChanged(event:TagEvent):void {
66 private function nodeMoved(event:NodeMovedEvent):void {
70 private function init():void {
73 // updateBbox(lon, lat);
74 // ** various other stuff
77 // ------------------------------------------------------------------------------------------
78 // Calculate length etc.
79 // ** this could be made scale-independent - would speed up redraw
81 public function recalculate():void {
82 var lx:Number, ly:Number, sc:Number;
83 var cx:Number=0, cy:Number=0;
87 lx = way.getNode(way.length-1).lon;
88 ly = way.getNode(way.length-1).latp;
89 for ( var i:uint = 0; i < way.length; i++ ) {
90 var node:Node = way.getNode(i);
91 var latp:Number = node.latp;
92 var lon:Number = node.lon;
93 if ( i>0 ) { pathlength += Math.sqrt( Math.pow(lon-lx,2)+Math.pow(latp-ly,2) ); }
94 sc = (lx*latp-lon*ly)*map.scalefactor;
101 pathlength*=map.scalefactor;
103 if (patharea!=0 && way.isArea()) {
104 centroid_x=map.lon2coord(cx/patharea/6);
105 centroid_y=map.latp2coord(cy/patharea/6);
106 } else if (pathlength>0) {
107 var c:Array=pointAt(0.5);
113 // ------------------------------------------------------------------------------------------
116 public function redraw():void {
117 // Copy tags object, and add states
118 var tags:Object = way.getTagsCopy();
119 for (var stateKey:String in stateClasses) {
120 tags[":"+stateKey] = stateKey;
123 // Remove all currently existing sprites
124 while (sprites.length>0) {
125 var d:DisplayObject=sprites.pop(); d.parent.removeChild(d);
131 layer=Math.min(Math.max(tags['layer']+5,-5),5)+5;
133 // Iterate through each sublayer, drawing any styles on that layer
134 var sl:StyleList=map.ruleset.getStyles(this.way, tags);
136 for (var sublayer:uint=0; sublayer<11; sublayer++) {
137 if (sl.shapeStyles[sublayer]) {
138 var s:ShapeStyle=sl.shapeStyles[sublayer];
139 var stroke:Shape, fill:Shape, casing:Shape, roadname:Sprite;
140 var x0:Number=map.lon2coord(way.getNode(0).lon);
141 var y0:Number=map.latp2coord(way.getNode(0).latp);
145 stroke=new Shape(); addToLayer(stroke,2,sublayer);
146 stroke.graphics.moveTo(x0,y0);
147 s.applyStrokeStyle(stroke.graphics);
148 if (s.dashes && s.dashes.length>0) { dashedLine(stroke.graphics,s.dashes); }
149 else { solidLine(stroke.graphics); }
154 if (s.fill_color || s.fill_image) {
155 fill=new Shape(); addToLayer(fill,0);
156 fill.graphics.moveTo(x0,y0);
157 if (s.fill_image) { new WayBitmapFiller(this,fill.graphics,s); }
158 else { s.applyFill(fill.graphics); }
159 solidLine(fill.graphics);
160 fill.graphics.endFill();
165 if (s.casing_width) {
166 casing=new Shape(); addToLayer(casing,1);
167 casing.graphics.moveTo(x0,y0);
168 s.applyCasingStyle(casing.graphics);
169 if (s.casing_dashes && s.casing_dashes.length>0) { dashedLine(casing.graphics,s.casing_dashes); }
170 else { solidLine(casing.graphics); }
175 if (sl.textStyles[sublayer]) {
176 var t:TextStyle=sl.textStyles[sublayer];
177 roadname=new Sprite(); addToLayer(roadname,3);
178 nameformat = t.getTextFormat();
179 var a:String=tags[t.text];
181 if (t.font_caps) { a=a.toUpperCase(); }
182 if (t.text_center && centroid_x) {
183 t.writeNameLabel(roadname,tags[t.text],centroid_x,centroid_y);
185 writeNameOnPath(roadname,a,t.text_offset ? t.text_offset : 0);
187 if (t.text_halo_radius>0) { roadname.filters=t.getHaloFilter(); }
191 // ** ShieldStyle to do
194 // No styles, so add a thin trace
195 if (!drawn && map.showall) {
196 var def:Sprite = new Sprite();
197 def.graphics.lineStyle(0.5, 0x808080, 1, false, "normal");
198 solidLine(def.graphics);
203 if ( stateClasses["showNodes"] != null ) {
204 var nodes:Sprite = new Sprite();
205 drawNodes(nodes.graphics);
206 addToLayer(nodes, 3);
209 if (!drawn) { return; }
211 // create a generic "way" hitzone sprite
212 hitzone = new Sprite();
213 hitzone.graphics.lineStyle(4, 0x000000, 1, false, "normal", CapsStyle.ROUND, JointStyle.ROUND);
214 solidLine(hitzone.graphics);
215 addToLayer(hitzone, 4);
216 hitzone.visible = false;
218 if ( listenSprite == null ) {
219 listenSprite = new Sprite();
220 listenSprite.addEventListener(MouseEvent.CLICK, mouseEvent);
221 listenSprite.addEventListener(MouseEvent.DOUBLE_CLICK, mouseEvent);
222 listenSprite.addEventListener(MouseEvent.MOUSE_OVER, mouseEvent);
223 listenSprite.addEventListener(MouseEvent.MOUSE_OUT, mouseEvent);
224 listenSprite.addEventListener(MouseEvent.MOUSE_DOWN, mouseEvent);
225 listenSprite.addEventListener(MouseEvent.MOUSE_UP, mouseEvent);
226 listenSprite.addEventListener(MouseEvent.MOUSE_MOVE, mouseEvent);
228 listenSprite.hitArea = hitzone;
229 addToLayer(listenSprite, 4);
230 listenSprite.buttonMode = true;
231 listenSprite.mouseEnabled = true;
235 // ------------------------------------------------------------------------------------------
236 // Drawing support functions
238 private function drawNodes(g:Graphics):void {
239 g.lineStyle(1, 0xff0000, 1, false, "normal", CapsStyle.ROUND, JointStyle.ROUND);
240 for (var i:uint = 0; i < way.length; i++) {
241 var node:Node = way.getNode(i);
242 var x:Number = map.lon2coord(node.lon);
243 var y:Number = map.latp2coord(node.latp);
252 // Draw solid polyline
254 public function solidLine(g:Graphics):void {
255 var node:Node = way.getNode(0);
256 g.moveTo(map.lon2coord(node.lon), map.latp2coord(node.latp));
257 for (var i:uint = 1; i < way.length; i++) {
258 node = way.getNode(i);
259 g.lineTo(map.lon2coord(node.lon), map.latp2coord(node.latp));
263 // Draw dashed polyline
265 private function dashedLine(g:Graphics,dashes:Array):void {
266 var draw:Boolean=false, dashleft:Number=0, dc:Array=new Array();
267 var a:Number, xc:Number, yc:Number;
268 var curx:Number, cury:Number;
269 var dx:Number, dy:Number, segleft:Number=0;
272 var node:Node = way.getNode(0);
273 var nextNode:Node = way.getNode(0);
274 g.moveTo(map.lon2coord(node.lon), map.latp2coord(node.latp));
275 while (i < way.length-1 || segleft>0) {
276 if (dashleft<=0) { // should be ==0
277 if (dc.length==0) { dc=dashes.slice(0); }
281 if (segleft<=0) { // should be ==0
282 node = way.getNode(i);
283 nextNode = way.getNode(i+1);
284 curx=map.lon2coord(node.lon);
285 dx=map.lon2coord(nextNode.lon)-curx;
286 cury=map.latp2coord(node.latp);
287 dy=map.latp2coord(nextNode.latp)-cury;
288 a=Math.atan2(dy,dx); xc=Math.cos(a); yc=Math.sin(a);
289 segleft=Math.sqrt(dx*dx+dy*dy);
293 if (segleft<=dashleft) {
294 // the path segment is shorter than the dash
296 moveLine(g,curx,cury,draw);
297 dashleft-=segleft; segleft=0;
299 // the path segment is longer than the dash
300 curx+=dashleft*xc; dx-=dashleft*xc;
301 cury+=dashleft*yc; dy-=dashleft*yc;
302 moveLine(g,curx,cury,draw);
303 segleft-=dashleft; dashleft=0;
308 private function moveLine(g:Graphics,x:Number,y:Number,draw:Boolean):void {
309 if (draw) { g.lineTo(x,y); }
310 else { g.moveTo(x,y); }
314 // Find point partway (0-1) along a path
315 // returns (x,y,angle)
316 // inspired by senocular's Path.as
318 private function pointAt(t:Number):Array {
319 var totallen:Number = t*pathlength;
320 var curlen:Number = 0;
321 var dx:Number, dy:Number, seglen:Number;
322 for (var i:int = 1; i < way.length; i++){
323 dx=map.lon2coord(way.getNode(i).lon)-map.lon2coord(way.getNode(i-1).lon);
324 dy=map.latp2coord(way.getNode(i).latp)-map.latp2coord(way.getNode(i-1).latp);
325 seglen=Math.sqrt(dx*dx+dy*dy);
326 if (totallen > curlen+seglen) { curlen+=seglen; continue; }
327 return new Array(map.lon2coord(way.getNode(i-1).lon)+(totallen-curlen)/seglen*dx,
328 map.latp2coord(way.getNode(i-1).latp)+(totallen-curlen)/seglen*dy,
331 return new Array(0, 0, 0);
334 // Draw name along path
335 // based on code by Tom Carden
338 private function writeNameOnPath(s:Sprite,a:String,textOffset:Number=0):void {
340 // make a dummy textfield so we can measure its width
341 var tf:TextField = new TextField();
342 tf.defaultTextFormat = nameformat;
344 tf.width = tf.textWidth+4;
345 tf.height = tf.textHeight+4;
346 if (pathlength<tf.width) { return; } // no room for text?
348 var t1:Number = (pathlength/2 - tf.width/2) / pathlength; var p1:Array=pointAt(t1);
349 var t2:Number = (pathlength/2 + tf.width/2) / pathlength; var p2:Array=pointAt(t2);
351 var angleOffset:Number; // so we can do a 180ยบ if we're running backwards
352 var offsetSign:Number; // -1 if we're starting at t2
353 var tStart:Number; // t1 or t2
355 // make sure text doesn't run right->left or upside down
358 p1[2] > -Math.PI/2) {
359 angleOffset = 0; offsetSign = 1; tStart = t1;
361 angleOffset = Math.PI; offsetSign = -1; tStart = t2;
364 // make a textfield for each char, centered on the line,
365 // using getCharBoundaries to rotate it around its center point
366 var chars:Array = a.split('');
367 for (var i:int = 0; i < chars.length; i++) {
368 var rect:Rectangle = tf.getCharBoundaries(i);
370 s.addChild(rotatedLetter(chars[i],
371 tStart + offsetSign*(rect.left+rect.width/2)/pathlength,
372 rect.width, tf.height, angleOffset, textOffset));
377 private function rotatedLetter(char:String, t:Number, w:Number, h:Number, a:Number, o:Number):TextField {
378 var tf:TextField = new TextField();
379 tf.mouseEnabled = false;
380 tf.mouseWheelEnabled = false;
381 tf.defaultTextFormat = nameformat;
382 tf.embedFonts = true;
384 tf.width = tf.textWidth+4;
385 tf.height = tf.textHeight+4;
387 var p:Array=pointAt(t);
388 var matrix:Matrix = new Matrix();
389 matrix.translate(-w/2, -h/2-o);
390 // ** add (say) -4 to the height to move it up by 4px
391 matrix.rotate(p[2]+a);
392 matrix.translate(p[0], p[1]);
393 tf.transform.matrix = matrix;
397 // Add object (stroke/fill/roadname) to layer sprite
399 private function addToLayer(s:DisplayObject,t:uint,sublayer:int=-1):void {
400 var l:DisplayObject=Map(map).getChildAt(map.WAYSPRITE+layer);
401 var o:DisplayObject=Sprite(l).getChildAt(t);
402 if (sublayer!=-1) { o=Sprite(o).getChildAt(sublayer); }
403 Sprite(o).addChild(s);
406 Sprite(s).mouseEnabled = false;
407 Sprite(s).mouseChildren = false;
411 public function getNodeAt(x:Number, y:Number):Node {
412 for (var i:uint = 0; i < way.length; i++) {
413 var node:Node = way.getNode(i);
414 var nodeX:Number = map.lon2coord(node.lon);
415 var nodeY:Number = map.latp2coord(node.latp);
416 if ( nodeX >= x-3 && nodeX <= x+3 &&
417 nodeY >= y-3 && nodeY <= y+3 )
423 private function mouseEvent(event:MouseEvent):void {
424 var node:Node = getNodeAt(event.localX, event.localY);
426 map.entityMouseEvent(event, way);
428 map.entityMouseEvent(event, node);
431 public function setHighlight(stateType:String, isOn:Boolean):void {
432 if ( isOn && stateClasses[stateType] == null ) {
433 stateClasses[stateType] = true;
435 } else if ( !isOn && stateClasses[stateType] != null ) {
436 delete stateClasses[stateType];