The ATTACH method of VPGL Language registers event handler to 3D geometries.
ATTACH takes 3 inputs or 2 input with option and emits 1 ouput. Input 0 must be the 3D object, input 1 must be an object to respond agaist this event and input 2/option must be a dictionary which has:
- “scene” – scene name which attached geometry belongs to
- “geo” – name of goemetry which this hadler is attached
- “evt” – event name.
- “msg” – method name which input 1 executes on evt raising.
All mandetory items above are string object.
Finally ATTACH passes the 3D object to outpu 0.