1 package net.systemeD.halcyon {
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;
10 /** The VectorLayer class is used for the concept of Vector Background Layers.
11 * It is similar in concept to the various Connection layers used for the core
12 * OpenStreetMap data, and as such it stores its own list of nodes, ways and relations.
13 * The most interesting function is pullThrough which allows moving entities out
14 * of a VectorLayer and into the main map layer
16 public class VectorLayer extends Object {
19 public var paint:MapPaint; // sprites
20 public var name:String;
21 public var url:String;
22 public var style:String='';
24 public var ways:Object=new Object(); // geodata
25 public var nodes:Object=new Object(); // |
26 public var relations:Object=new Object(); // |
27 private var pois:Array=[]; // |
28 private var negativeID:Number = -1;
30 /** Create a new VectorLayer
31 * @param n The name of the VectorLayer (eg 'GPS tracks')
32 * @param m The map. You probably have a global reference to this
33 * @param s The style you wish to use (eg 'gpx.css')
35 public function VectorLayer(n:String,m:Map,s:String) {
39 paint=new MapPaint(m,0,0);
43 public function redrawFromCSS(style:String):void {
44 paint.ruleset=new RuleSet(map.MINSCALE,map.MAXSCALE,paint.redraw);
45 paint.ruleset.loadFromCSS(style);
48 public function createNode(tags:Object,lat:Number,lon:Number):Node {
49 var node:Node = new Node(negativeID, 0, tags, true, lat, lon);
50 nodes[negativeID]=node; negativeID--;
53 public function createWay(tags:Object,nodes:Array):Way {
54 var way:Way = new Way(negativeID, 0, tags, true, nodes.concat());
55 ways[negativeID]=way; negativeID--;
58 public function createRelation(tags:Object,members:Array):Relation {
59 var relation:Relation = new Relation(negativeID, 0, tags, true, members.concat());
60 relations[negativeID]=relation; negativeID--;
63 public function registerPOI(node:Node):void {
64 if (pois.indexOf(node)<0) { pois.push(node); }
66 public function unregisterPOI(node:Node):void {
67 var index:uint = pois.indexOf(node);
68 if ( index >= 0 ) { pois.splice(index,1); }
71 public function getObjectsByBbox(left:Number, right:Number, top:Number, bottom:Number):Object {
72 // ** FIXME: this is just copied-and-pasted from Connection.as, which really isn't very
73 // good practice. Is there a more elegant way of doing it?
74 var o:Object = { poisInside: [], poisOutside: [], waysInside: [], waysOutside: [] };
75 for each (var way:Way in ways) {
76 if (way.within(left,right,top,bottom)) { o.waysInside.push(way); }
77 else { o.waysOutside.push(way); }
79 for each (var poi:Node in pois) {
80 if (poi.within(left,right,top,bottom)) { o.poisInside.push(poi); }
81 else { o.poisOutside.push(poi); }
87 * Transfers an entity from the VectorLayer into the main layer
88 * @param entity The entity from the VectorLayer that you want to transfer.
89 * @param connection The Connection instance to transfer to (eg Connection.getConnection() )
91 * @return either the newly created entity, or null
93 public function pullThrough(entity:Entity,connection:Connection):Entity {
95 var oldNode:Node, newNode:Node;
97 // copy way through to main layer
98 // ** shouldn't do this if the nodes are already in the main layer
99 // (or maybe we should just match on lat/long to avoid ways in background having nodes in foreground)
100 var oldWay:Way=Way(entity);
101 var newWay:Way=connection.createWay(oldWay.getTagsCopy(), [], MainUndoStack.getGlobalStack().addAction);
102 var nodemap:Object={};
103 for (i=0; i<oldWay.length; i++) {
104 oldNode = oldWay.getNode(i);
105 newNode = nodemap[oldNode.id] ? nodemap[oldNode.id] : connection.createNode(
106 oldNode.getTagsCopy(), oldNode.lat, oldNode.lon,
107 MainUndoStack.getGlobalStack().addAction);
108 newWay.appendNode(newNode, MainUndoStack.getGlobalStack().addAction);
109 nodemap[oldNode.id]=newNode;
112 while (oldWay.length) {
113 var id:Number=oldWay.getNode(0).id;
114 oldWay.removeNodeByIndex(0,MainUndoStack.getGlobalStack().addAction,false);
117 paint.wayuis[oldWay.id].redraw();
118 delete ways[oldWay.id];
119 map.paint.createWayUI(newWay);
122 } else if (entity is Node && !entity.hasParentWays) {
123 // copy node through to main layer
124 // ** should be properly undoable
125 oldNode=Node(entity);
126 unregisterPOI(oldNode);
127 var newPoiAction:CreatePOIAction = new CreatePOIAction(
128 oldNode.getTagsCopy(), oldNode.lat, oldNode.lon);
129 MainUndoStack.getGlobalStack().addAction(newPoiAction);
130 paint.deleteNodeUI(oldNode);
131 delete nodes[oldNode.id];
132 return newPoiAction.getNode();
138 * Remove all the nodes, ways, and relations from the VectorLayer.
139 * Also removes the associated NodeUIs, WayUIs and POIs
141 public function blank():void {
142 for each (var node:Node in nodes) { paint.deleteNodeUI(node); }
143 for each (var way:Way in ways) { paint.deleteWayUI(way); }
144 relations={}; nodes={}; ways={}; pois=[];