Fix for GeoJSON + Reprojection problems for GeometryCollections. Original

patch/ diagnosis by ibolmo, refactored by me. Includes manual test. 
(Closes #2024)


git-svn-id: http://svn.openlayers.org/trunk/openlayers@9181 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Format/GeoJSON.js

@@ -212,7 +212,7 @@ OpenLayers.Format.GeoJSON = OpenLayers.Class(OpenLayers.Format.JSON, {
         if (obj == null) {
             return null;
         }
-        var geometry;
+        var geometry, collection = false;
         if(obj.type == "GeometryCollection") {
             if(!(obj.geometries instanceof Array)) {
                 throw "GeometryCollection must have geometries array: " + obj;
@@ -225,6 +225,7 @@ OpenLayers.Format.GeoJSON = OpenLayers.Class(OpenLayers.Format.JSON, {
                 );
             }
             geometry = new OpenLayers.Geometry.Collection(components);
+            collection = true;
         } else {
             if(!(obj.coordinates instanceof Array)) {
                 throw "Geometry must have coordinates array: " + obj;
@@ -241,7 +242,9 @@ OpenLayers.Format.GeoJSON = OpenLayers.Class(OpenLayers.Format.JSON, {
                 throw err;
             }
         }
-        if (this.internalProjection && this.externalProjection) {
+        // We don't reproject collections because the children are reprojected
+        // for us when they are created.
+        if (this.internalProjection && this.externalProjection && !collection) {
             geometry.transform(this.externalProjection, 
                                this.internalProjection); 
         }