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pencil-head
03-23-2003, 01:48 AM
i'm trying to use bones for facial animation on my character. what i did is put a "position constraint" on each bone to a point helper as well as a "look at" to another point helper. Problem is when i rotate the head some of the bones rotate on its axis, causing the face to distort. Anyone know how to stop it rotating?

Take a look (http://www.geocities.com/pencil_head_portfolio/face.htm)
S_3D_A
03-23-2003, 03:28 AM
Have you tried linking each beginning bone to the object that you use to rotate the head?
pencil-head
03-23-2003, 04:05 AM
thanks for the reply, but it didn't work:thumbsdow
S_3D_A
03-23-2003, 07:15 PM
What are the bones linked to. Be specific plz. If possible post a pic of this detailing what they are linked to. Or if ya want email me just the head and I can see what I can do.
pencil-head
03-23-2003, 09:15 PM
The bones aren't actually linked to anything. like i said before, the bones have a "position constraint" so wherever the "point helper" goes, the bone goes. It also has a "look at constraint" so the bone will look at the other "point helper". anyway you can download the max file here (http://www.geocities.com/pencil_head_portfolio/face.htm).
pencil-head
03-28-2003, 09:15 PM
for those who are interested, i finally figured out what was going on. a little thing called gimbal lock. go here (http://www.anticz.com/eularqua.htm) to read more about it. To fix it there is an option in the "look at constain" that lets you assign an "upnode". i had to untick world and asign it to the head bone.

Anyway thanks for trying S_3D_A;)
Stroker
03-28-2003, 09:40 PM
Congrats on finding the problem.
Thank you for telling us about it.
And thank you for the article.
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