*/
protected Geometry createGeometryFile(String filename) throws IOException {
GeometryMapTree gmt = new GeometryMapTree();
gmt.getTextureConnections().addConnection(new ConnectionURL("textures/0.mxml"));
gmt.getHeightfieldConnections().addConnection(new ConnectionURL("heightfield/0.mxml"));
gmt.writeXML(filename, getMapName());
return gmt;
}
/**