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.connection.actions.*;
   7         import net.systemeD.halcyon.Globals;
   8         import net.systemeD.halcyon.styleparser.RuleSet;
   9
  10         public class VectorLayer extends Object {
  11
  12                 public var map:Map;
  13                 public var paint:MapPaint;                                              // sprites
  14                 public var name:String;
  15                 public var url:String;
  16                 public var style:String='';
  17
  18                 public var ways:Object=new Object();                    // geodata
  19                 public var nodes:Object=new Object();                   //  |
  20                 public var relations:Object=new Object();               //  |
  21         private var negativeID:Number = -1;
  22
  23                 public function VectorLayer(n:String,m:Map,s:String) {
  24                         name=n;
  25                         map=m;
  26                         style=s;
  27                         paint=new MapPaint(m,0,0);
  28                         redrawFromCSS(style);
  29                 }
  30
  31                 public function redrawFromCSS(style:String):void {
  32                         paint.ruleset=new RuleSet(map.MINSCALE,map.MAXSCALE,paint.redraw);
  33                         paint.ruleset.loadFromCSS(style);
  34                 }
  35
  36                 public function createNode(tags:Object,lat:Number,lon:Number):Node {
  37                         var node:Node = new Node(negativeID, 0, tags, true, lat, lon);
  38                         nodes[negativeID]=node; negativeID--;
  39                         return node;
  40                 }
  41                 public function createWay(tags:Object,nodes:Array):Way {
  42                         var way:Way = new Way(negativeID, 0, tags, true, nodes.concat());
  43                         ways[negativeID]=way; negativeID--;
  44                         return way;
  45                 }
  46                 public function createRelation(tags:Object,members:Array):Relation {
  47             var relation:Relation = new Relation(negativeID, 0, tags, true, members.concat());
  48                         relations[negativeID]=relation; negativeID--;
  49             return relation;
  50                 }
  51
  52                 public function getObjectsByBbox(left:Number, right:Number, top:Number, bottom:Number):Object {
  53                         // ** FIXME: this is just copied-and-pasted from Connection.as, which really isn't very
  54                         // good practice. Is there a more elegant way of doing it?
  55                         var o:Object = { nodesInside: [], nodesOutside: [], waysInside: [], waysOutside: [] };
  56                         for each (var way:Way in ways) {
  57                                 if (way.within(left,right,top,bottom)) { o.waysInside.push(way); }
  58                                                                   else { o.waysOutside.push(way); }
  59                         }
  60                         for each (var node:Node in nodes) {
  61                                 if (node.within(left,right,top,bottom)) { o.nodesInside.push(node); }
  62                                                                    else { o.nodesOutside.push(node); }
  63                         }
  64                         return o;
  65                 }
  66
  67                 public function pullThrough(entity:Entity,connection:Connection):Entity {
  68                         var i:uint=0;
  69                         var oldNode:Node, newNode:Node;
  70                         if (entity is Way) {
  71                                 // copy way through to main layer
  72                                 // ** shouldn't do this if the nodes are already in the main layer
  73                                 //    (or maybe we should just match on lat/long to avoid ways in background having nodes in foreground)
  74                                 var oldWay:Way=Way(entity);
  75                                 var newWay:Way=connection.createWay(oldWay.getTagsCopy(), [], MainUndoStack.getGlobalStack().addAction);
  76                                 var nodemap:Object={};
  77                                 for (i=0; i<oldWay.length; i++) {
  78                                         oldNode = oldWay.getNode(i);
  79                                         newNode = nodemap[oldNode.id] ? nodemap[oldNode.id] : connection.createNode(
  80                                                 oldNode.getTagsCopy(), oldNode.lat, oldNode.lon,
  81                                                 MainUndoStack.getGlobalStack().addAction);
  82                                         newWay.appendNode(newNode, MainUndoStack.getGlobalStack().addAction);
  83                                         nodemap[oldNode.id]=newNode;
  84                                 }
  85                                 // delete this way
  86                                 while (oldWay.length) {
  87                                         var id:Number=oldWay.getNode(0).id;
  88                                         oldWay.removeNodeByIndex(0,MainUndoStack.getGlobalStack().addAction,false);
  89                                         delete nodes[id];
  90                                 }
  91                                 paint.wayuis[oldWay.id].redraw();
  92                                 delete ways[oldWay.id];
  93                                 map.paint.createWayUI(newWay);
  94                                 return newWay;
  95
  96                         } else if (entity is Node && !entity.hasParentWays) {
  97                                 // copy node through to main layer
  98                                 // ** should be properly undoable
  99                                 oldNode=Node(entity)
 100                                 var newPoiAction:CreatePOIAction = new CreatePOIAction(
 101                                         oldNode.getTagsCopy(), oldNode.lat, oldNode.lon);
 102                                 MainUndoStack.getGlobalStack().addAction(newPoiAction);
 103                                 paint.deleteNodeUI(oldNode);
 104                                 delete nodes[oldNode.id];
 105                                 return newPoiAction.getNode();
 106                         }
 107                         return null;
 108                 }
 109
 110                 public function blank():void {
 111                         for each (var node:Node in nodes) { paint.deleteNodeUI(node); }
 112                         for each (var way:Way in ways) { paint.deleteWayUI(way); }
 113                         relations={}; nodes={}; ways={};
 114                 }
 115
 116         }
 117 }