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M3setAnimKeyF
Calculates the animation for the '_top_' sub-tree, at the (floating-point) frame given as a parameter.
The only 3D objects from this tree than can be animated are those having an animation node as a child.

I M3setAnimKeyF (
S3d _session_
H3d _top_
F _frame_
)
Parameters

_session_
3D Session
_top_
Tree top to be animated
_frame_
Animation frame
Return value

0 if successful, otherwise nil