I don’t understand your question, sorry. Can you elaborate a little bit about what you mean with “model” and “origin”? Best would be to use Pand3D or PandaPhysX class names.
You mean the NodePath assigend to a PhysActor, or the PhysShape added to the PhysActor?
“Origin” is a property of a coordinate system. There are several coordinate systems involved, for example the global CS or rendered geometry (NodePath “render”), the local CS of a NodePath (relative to it’s parent NodePath), the CS of the PhysScene, the global CS of a PhysActor (relative to the PhysScene), the local CS of a physShape (relative to PhysActor), just to name the most important ones.
enn0x