POV-Ray : Newsgroups : povray.binaries.scene-files : Re: BVH motion capture files : Re: BVH motion capture files Server Time
2 Sep 2024 08:17:58 EDT (-0400)
  Re: BVH motion capture files  
From: Mike Williams
Date: 15 Apr 2002 02:53:54
Message: <3cba7902@news.povray.org>
>Mike,
>
>I tried rendering this anim, and in my opinion, I think something is amiss.
>Either the .bvh file had strange motion and your translation of it is fine,
>or the .bvh file was fine, and something has gone wrong with your
>translation (does that make sense?).
>There seems to be a lot of strange rotations and movements going on there.
>I'll try and suss it out later when I have more time, but for the moment I
>think I will just create my motion using a IK skeleton in the Lightwave
>demo, and by placing a null at each joint, for each frame place the vectors
>in an array and animate that.
>
>Dunno if that makes sense.. it's late and I need Z's.
>
>All the best,
>
>Andy Cocker

You're right.

Although the BVH specifies the rotations in the order Z X Y, they need to be
actioned in the reverse order Y X Z.

Here's the fixed animation.

I'm currently working on a Perl script that will read a BVH file and
automatically create files equivalent to these inc and dat files. Watch out
for it on binaries.utilities.


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