public unowned PaintVolume? get_paint_volume ()
Retrieves the paint volume of the passed Actor, or
null when a paint
volume can't be determined.
The paint volume is defined as the 3D space occupied by an actor when being painted.
This function will call the
ClutterActorClass.get_paint_volume virtual function of the
Actor class. Sub-classes of
Actor should not usually care about overriding the default implementation, unless they are, for instance: painting outside their
allocation, or actors with a depth factor (not in terms of depth but real
Note: 2D actors overriding
ClutterActorClass.get_paint_volume should ensure that their volume has a depth of 0. (This will be true
as long as you don't call set_depth.)
a pointer to a PaintVolume, or