making reprojection work for all kinds of geometries. Thanks crschmidt for the tests. r=crschmidt (closes #3418)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@12218 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Format/KML.js

@@ -1223,12 +1223,6 @@ OpenLayers.Format.KML = OpenLayers.Class(OpenLayers.Format.XML, {
      * {DOMElement}
      */
     buildGeometryNode: function(geometry) {
-        if (this.internalProjection && this.externalProjection && 
-            !(geometry instanceof OpenLayers.Geometry.Collection)) {
-            geometry = geometry.clone();
-            geometry.transform(this.internalProjection, 
-                               this.externalProjection);
-        }                       
         var className = geometry.CLASS_NAME;
         var type = className.substring(className.lastIndexOf(".") + 1);
         var builder = this.buildGeometry[type.toLowerCase()];
@@ -1413,12 +1407,12 @@ OpenLayers.Format.KML = OpenLayers.Class(OpenLayers.Format.XML, {
             var parts = new Array(numPoints);
             for(var i=0; i<numPoints; ++i) {
                 point = points[i];
-                parts[i] = point.x + "," + point.y;
+                parts[i] = this.buildCoordinates(point);
             }
             path = parts.join(" ");
         } else {
             // Point
-            path = geometry.x + "," + geometry.y;
+            path = this.buildCoordinates(geometry);
         }
         
         var txtNode = this.createTextNode(path);
@@ -1426,6 +1420,24 @@ OpenLayers.Format.KML = OpenLayers.Class(OpenLayers.Format.XML, {
         
         return coordinatesNode;
     },    
+    
+    /**
+     * Method: buildCoordinates
+     *
+     * Parameters:
+     * point - {<OpenLayers.Geometry.Point>}
+     *
+     * Returns
+     * {String} a coordinate pair
+     */
+    buildCoordinates: function(point) {
+        if (this.internalProjection && this.externalProjection) {
+            point = point.clone();
+            point.transform(this.internalProjection, 
+                               this.externalProjection);
+        }
+        return point.x + "," + point.y;                     
+    },
 
     CLASS_NAME: "OpenLayers.Format.KML" 
 });

tests/Format/KML.html

@@ -230,6 +230,18 @@
         };
         t.eq(f.read(f.write(feature))[0].attributes.name, feature.style.label, "placemark name from style.label");
     }
+    function test_Format_KML_linestring_projected(t) {
+        t.plan(1);
+        var f = new OpenLayers.Feature.Vector(new OpenLayers.Geometry.LineString([
+            new OpenLayers.Geometry.Point(15555162, 4247484), new OpenLayers.Geometry.Point(15555163, 4247485)]));
+        var format = new OpenLayers.Format.KML({
+            internalProjection: new OpenLayers.Projection("EPSG:900913"),
+            externalProjection: new OpenLayers.Projection("EPSG:4326")
+        });
+        var data = format.write(f);
+        var found = (data.search('139.734') != -1);
+        t.ok(found, "Found 139.734 (correct reprojection) in data output.");
+    }        
     
     function test_extractTracks(t) {