Flipless twist bone

Become a member of the CGSociety

Connect, Share, and Learn with our Large Growing CG Art Community. It's Free!

THREAD CLOSED
 
Thread Tools Search this Thread Display Modes
Old 06 June 2013   #1
Flipless twist bone

I recently found this page by Felix Joleanes about a flipless twist bone. It works flawlessly, but I'm having trouble making a 60% bone, 30% bone etc. Up until finding it I had never even heard of quaternions, matrices etc. I've done a fair amount of research on them and gained at least a primitive understanding but I still can't seem to solve the problem.

Here's some of the stuff I've tried:

Slerp function - Causes flipping and 120 degrees and 240 degrees
Orientation Constraint- Flipping at 180 (angle might be different- I can't remember)
DegToRad / Eulerangles- Same flipping as orientation constraint
Expose Transform + Wiring- Usual flipping, makes the flipless bone at the top kinda pointless


Does anyone have a working solution to this problem? If you could explain the maths behind it too I'd be really grateful!

(Ps. This is my first post, I'm glad i finally got round to joining you all!)
 
Old 07 July 2013   #2
hi,

can you post the screenshot or the file of the problem? file would be great.

regards,
 
Old 07 July 2013   #3
If you download the file at the bottom of this page you can find an example of the twist bone setup: http://joleanes.com/tutorials/flipp...pingless_01.php

If you make another bone, and try to get that to move 50% of the twist bone's rotation on the X axis without having flipping issues then you'll see the problem.
 
Old 07 July 2013   #4
Thread automatically closed

This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.
__________________
CGTalk Policy/Legalities
Note that as CGTalk Members, you agree to the terms and conditions of using this website.
 
Thread Closed share thread



Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
CGSociety
Society of Digital Artists
www.cgsociety.org

Powered by vBulletin
Copyright 2000 - 2006,
Jelsoft Enterprises Ltd.
Minimize Ads
Forum Jump
Miscellaneous

All times are GMT. The time now is 05:05 PM.


Powered by vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.