A Puzzling Parameter

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From: Spudeister (gary_at_mr-gamemaker.com)
Date: 11/01/04 

Date: Mon, 1 Nov 2004 11:34:21 -0000

Hi Guys and Gals,

I am a little confused about the 'optional' parameter to the
ID3DXKeyframedAnimationSet::Compress function that allows us you pass a
D3DXFRAME. I assume this is to allow you to pass the root node of your
hierarchy but I am very confused as to A) why this would be needed as the
animation set contains on the keyframe data and animation names and
therefore I would imagine has everything it needs to compression, and B) Why
it is optional, which is perhaps even more puzzling as the compression seems
to work with or without that parameter.

Does anybody have any thoughts or insights on this? I am trying to imagine
how an optional hierarchy traversal would help the compression technique
used by this function. Any thoughts would be greatly appreciated.

Thankyou for your time

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