net/systemeD/halcyon/VectorLayer.as

   1 package net.systemeD.halcyon {
   2
   3         import net.systemeD.halcyon.Map;
   4         import net.systemeD.halcyon.MapPaint;
   5         import net.systemeD.halcyon.connection.*;
   6         import net.systemeD.halcyon.Globals;
   7         import net.systemeD.halcyon.styleparser.RuleSet;
   8
   9         public class VectorLayer extends Object {
  10
  11                 public var map:Map;
  12                 public var paint:MapPaint;                                              // sprites
  13                 public var name:String;
  14                 public var url:String;
  15                 public var style:String='';
  16
  17                 public var ways:Object=new Object();                    // geodata
  18                 public var nodes:Object=new Object();                   //  |
  19                 public var relations:Object=new Object();               //  |
  20         private var negativeID:Number = -1;
  21
  22                 public function VectorLayer(n:String,m:Map,s:String) {
  23                         name=n;
  24                         map=m;
  25                         style=s;
  26                         paint=new MapPaint(m,0,0);
  27                         redrawFromCSS(style);
  28                 }
  29
  30                 public function redrawFromCSS(style:String):void {
  31                         paint.ruleset=new RuleSet(map.MINSCALE,map.MAXSCALE,paint.redraw);
  32                         paint.ruleset.loadFromCSS(style);
  33                 }
  34
  35                 public function createNode(tags:Object,lat:Number,lon:Number):Node {
  36                         var node:Node = new Node(negativeID, 0, tags, true, lat, lon);
  37                         nodes[negativeID]=node; negativeID--;
  38                         return node;
  39                 }
  40                 public function createWay(tags:Object,nodes:Array):Way {
  41                         var way:Way = new Way(negativeID, 0, tags, true, nodes.concat());
  42                         ways[negativeID]=way; negativeID--;
  43                         return way;
  44                 }
  45                 public function createRelation(tags:Object,members:Array):Relation {
  46             var relation:Relation = new Relation(negativeID, 0, tags, true, members.concat());
  47                         relations[negativeID]=relation; negativeID--;
  48             return relation;
  49                 }
  50
  51                 public function getObjectsByBbox(left:Number, right:Number, top:Number, bottom:Number):Object {
  52                         // ** FIXME: this is just copied-and-pasted from Connection.as, which really isn't very
  53                         // good practice. Is there a more elegant way of doing it?
  54                         var o:Object = { nodesInside: [], nodesOutside: [], waysInside: [], waysOutside: [] };
  55                         for each (var way:Way in ways) {
  56                                 if (way.within(left,right,top,bottom)) { o.waysInside.push(way); }
  57                                                                   else { o.waysOutside.push(way); }
  58                         }
  59                         for each (var node:Node in nodes) {
  60                                 if (node.within(left,right,top,bottom)) { o.nodesInside.push(node); }
  61                                                                    else { o.nodesOutside.push(node); }
  62                         }
  63                         return o;
  64                 }
  65
  66                 public function pullThrough(entity:Entity,connection:Connection):Way {
  67                         var i:uint=0;
  68                         if (entity is Way) {
  69                                 // copy way through to main layer
  70                                 // ** shouldn't do this if the nodes are already in the main layer
  71                                 //    (or maybe we should just match on lat/long to avoid ways in background having nodes in foreground)
  72                                 var oldWay:Way=Way(entity);
  73                                 var newWay:Way=connection.createWay(oldWay.getTagsCopy(), [], MainUndoStack.getGlobalStack().addAction);
  74                                 var nodemap:Object={};
  75                                 var oldNode:Node, newNode:Node;
  76                                 for (i=0; i<oldWay.length; i++) {
  77                                         oldNode = oldWay.getNode(i);
  78                                         newNode = nodemap[oldNode.id] ? nodemap[oldNode.id] : connection.createNode(
  79                                                 oldNode.getTagsCopy(), oldNode.lat, oldNode.lon,
  80                                                 MainUndoStack.getGlobalStack().addAction);
  81                                         newWay.appendNode(newNode, MainUndoStack.getGlobalStack().addAction);
  82                                         nodemap[oldNode.id]=newNode;
  83                                 }
  84                                 // delete this way
  85                                 while (oldWay.length) {
  86                                         var id:Number=oldWay.getNode(0).id;
  87                                         oldWay.removeNodeByIndex(0,MainUndoStack.getGlobalStack().addAction,false);
  88                                         delete nodes[id];
  89                                 }
  90                                 paint.wayuis[oldWay.id].redraw();
  91                                 delete ways[oldWay.id];
  92                                 map.paint.createWayUI(newWay);
  93                         }
  94                         return newWay;
  95                 }
  96
  97                 public function blank():void {
  98                         for each (var node:Node in nodes) { paint.deleteNodeUI(node); }
  99                         for each (var way:Way in ways) { paint.deleteWayUI(way); }
 100                         relations={}; nodes={}; ways={};
 101                 }
 102
 103         }
 104 }