Document some of the features of VectorLayer.as

diff --git a/net/systemeD/halcyon/VectorLayer.as b/net/systemeD/halcyon/VectorLayer.as
index 38fe519b940100ee2746f65e0f624596e3f296d6..7b4e826bb0fcb4cffdacca66ed7fb71ca3223b6a 100644 (file)
--- a/net/systemeD/halcyon/VectorLayer.as
+++ b/net/systemeD/halcyon/VectorLayer.as
@@ -7,6 +7,12 @@ package net.systemeD.halcyon {
        import net.systemeD.halcyon.Globals;
        import net.systemeD.halcyon.styleparser.RuleSet;
 
+    /** The VectorLayer class is used for the concept of Vector Background Layers.
+    * It is similar in concept to the various Connection layers used for the core
+    * OpenStreetMap data, and as such it stores its own list of nodes, ways and relations.
+    * The most interesting function is pullThrough which allows moving entities out
+    * of a VectorLayer and into the main map layer
+    */
        public class VectorLayer extends Object {
 
                public var map:Map;
@@ -21,6 +27,11 @@ package net.systemeD.halcyon {
                private var pois:Array=[];                                              //  |
         private var negativeID:Number = -1;
 
+        /** Create a new VectorLayer
+        * @param n The name of the VectorLayer (eg 'GPS tracks')
+        * @param m The map. You probably have a global reference to this
+        * @param s The style you wish to use (eg 'gpx.css')
+        */
                public function VectorLayer(n:String,m:Map,s:String) {
                        name=n;
                        map=m;
@@ -71,7 +82,14 @@ package net.systemeD.halcyon {
                        }
                        return o;
                }
-               
+
+        /**
+        * Transfers an entity from the VectorLayer into the main layer
+        * @param entity The entity from the VectorLayer that you want to transfer.
+        * @param connection The Connection instance to transfer to (eg Connection.getConnection() )
+        *
+        * @return either the newly created entity, or null
+        */
                public function pullThrough(entity:Entity,connection:Connection):Entity {
                        var i:uint=0;
                        var oldNode:Node, newNode:Node;
@@ -115,7 +133,11 @@ package net.systemeD.halcyon {
                        }
                        return null;
                }
-               
+
+        /**
+        * Remove all the nodes, ways, and relations from the VectorLayer.
+        * Also removes the associated NodeUIs, WayUIs and POIs
+        */
                public function blank():void {
                        for each (var node:Node in nodes) { paint.deleteNodeUI(node); }
                        for each (var way:Way in ways) { paint.deleteWayUI(way); }