Marc-André Belzile

Houdini deletes handles automatically when the state exits, so this is handled for you. `onDeactivate()` can be used if you need to perform additional cleanup or manage handle settings, etc.
I

__init__() is the Python handle constructor and is called when the state is entered and the handle is created.
onActivate() is called by Houdini to initialize an existing handle, either when the state is first entered or when it is resumed.

When the state exits, onDeactivate() is called and the handle is deleted. The next time the state is entered, a new handle is created and onActivate() is called again.

Interrupting a state does not delete the handle, but still triggers onDeactivate().

coccarolla
I hope I can get an answer because I've been experimenting for a long time without any results.
I am trying to orient a python handle based on incoming geometry normals. The way I am trying to accomplish this is by extracting the position and the normal and building transforms from them in onDrawSetup. Then I am trying to multiply these with the gadgets' xform but results are not stable. Is there a proper order or place for doing this? Or am I doing something fundamentally wrong?

Could you provide a working Python handle that demonstrates the issues you are encountering?