Add support to Format.OSM to reproject on writing. Initial suggestion from

Arnd Wipperman, turned into a patch by me, r=bartvde (Closes #2988)


git-svn-id: http://svn.openlayers.org/trunk/openlayers@11647 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Format/OSM.js

@@ -347,6 +347,13 @@ OpenLayers.Format.OSM = OpenLayers.Class(OpenLayers.Format.XML, {
         'point': function(point) {
             var id = null;
             var geometry = point.geometry ? point.geometry : point;
+            
+            if (this.internalProjection && this.externalProjection) {
+                geometry = geometry.clone();
+                geometry.transform(this.internalProjection, 
+                                   this.externalProjection);
+            }                       
+            
             var already_exists = false; // We don't return anything if the node
                                         // has already been created
             if (point.osm_id) {

tests/Format/OSM.html

@@ -95,6 +95,18 @@
             output = output.replace(/<\?[^>]*\?>/, '');
             t.eq(output, osm_serialized_data[key], key + " serialized correctly");
         }
+    }   
+    function test_Format_OSM_write_reproject(t) {
+        t.plan(1);
+        var f = new OpenLayers.Format.OSM({'internalProjection': new OpenLayers.Projection("EPSG:900913")});
+        var feat = new OpenLayers.Feature.Vector(
+            new OpenLayers.Geometry.Point(100000, 100000)
+            );
+        var data = f.write([feat]);
+        var f = new OpenLayers.Format.OSM();
+        var features = f.read(data);
+
+        t.eq(OpenLayers.Util.toFloat(features[0].geometry.x, 3), .898, "exported to lonlat and re-read as lonlat correctly")
     }    
     </script> 
 </head>