}
-/*virtual*/ Object * Object::Mirror(Vector, Vector)
+/*virtual*/ void Object::Mirror(Point, Point)
{
- return NULL;
+}
+
+
+/*virtual*/ void Object::Save(void)
+{
+ oldPosition = position;
+}
+
+
+/*virtual*/ void Object::Restore(void)
+{
+ position = oldPosition;
}