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Calculates the animation for the '_top_' sub-tree, at the frame interpolated between the two (integer) frames given as parameters.
The interpolation coefficient is expressed as an integer (0 to 255).
The animation is calculated based on the animation node descendant provided as a parameter.

I M3applyAnimKey2 ( S3d _session_ H3d _anim0_ H3d _anim1_ H3d _top_ I _frame0_ I _frame1_ I _rate_ I _flag_ )

_session_
	3D Session
_anim0_
	Animation 0
_anim1_
	Animation 1
_top_
	Tree top to be animated
_frame0_
	Animation frame #0
_frame1_
	Animation frame #1
_rate_
	Interpolation rate
_flag_
	The '_flag_' parameter is composed of the following flags : ANIM_POS animation of positions ANIM_ANG animation of rotations ANIM_TOP also applies to the animation of the '_top_' node