CGTalk > Techniques > Character Rigging
Login register
Thread Closed share thread « Previous Thread | Next Thread »  
 
Thread Tools Search this Thread Display Modes
Old 09-21-2012, 04:53 AM   #1
JaredTaylor
Technical Artist
 
JaredTaylor's Avatar
portfolio
Jared Taylor
Wellington, New%2BZealand
 
Join Date: Jan 2007
Posts: 1,230
Cycle error while not cycling - random and unpredictable occurance

Hi,

There's something wrong with my rig.

I have a stretchy setup via translation and it all works fine. I also have forearm and upper arm joints to distribute twist from the wrist to the forearm and elbow to upper arm.

But that's when it begins. If I connect anything into the forearm or upper arm joints, sometimes it is fine, other times it cycles, most times it waits until I move the arm THEN undo, THEN it gives me a cycle. This includes utility nodes and/or constraints.

But there is no cycle at all. Why is this happening? Even when I remove the constraint/connection it STILL occurs. I'm only constraining/connecting rotateX.

Code:
// Warning: Cycle on 'L_wrist_IK.translateX' may not evaluate as expected. // Warning: Cycle on 'L_arm_scale_MD.outputX' may not evaluate as expected.


^ This occurs when placing an orient constraint from the L_wrist_JNT (bind) to L_forearmB_JNT (or A), moving the arm, then hitting undo.

L_wrist_IK is the wrist from the ik chain. L_arm_scale_MD is the node that divides the distance by the global scale to make rig scaleable.

I will provide a screenshot and upload my scene; model is removed to make file smaller:

https://www.dropbox.com/s/574ko8jji...g_cycleHelp.zip



 
Old 09-21-2012, 10:18 PM   #2
skealeye
Veteran
 
skealeye's Avatar
portfolio
Sean Kealey
Senior Character TD
Psyop LA
Los Angeles, USA
 
Join Date: Oct 2008
Posts: 66
file wont open for me.
__________________
-Sean Kealey

CG Director / Character TD


----VimeoPage---
----Showreel----
 
Old 09-21-2012, 10:41 PM   #3
JaredTaylor
Technical Artist
 
JaredTaylor's Avatar
portfolio
Jared Taylor
Wellington, New%2BZealand
 
Join Date: Jan 2007
Posts: 1,230
Hey,

Was able to fix this with some help, it was just incorrect parenting of locators that worked for my scale setup but obviously not for translation.

Cheers
 
Old 09-21-2012, 10:41 PM   #4
CGTalk Moderation
Lord of the posts
CGTalk Forum Leader
 
Join Date: Sep 2003
Posts: 1,066,481
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


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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 02:06 AM.


Powered by vBulletin
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.