public Geometry combine(Geometry orig, Geometry geom) {
List origList = extractElements(orig, true);
List geomList = extractElements(geom, true);
origList.addAll(geomList);
if (origList.size() == 0) {
// return a clone of the orig geometry
return (Geometry) orig.clone();
}
// return the "simplest possible" geometry
return geomFactory.buildGeometry(origList);
}
