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10-08-2010, 03:58 AM   #1
Join Date: Nov 2008
Posts: 11
animating multiple rotating objects
I'm trying to animate a rubik's cube. When I rotate a slice (9 cube pieces) and make the keyframes all is fine. But then when i rotate another slice which happens to contain a cube piece that was in the previous animation everything goes weird. I can rotate and make the keyframes, but when i go through the animation some of the pieces act strangely, for example if i rotate the whole slice only in the x dimension, I notice some of the pieces rotate a bit in y and z as well for no apparant reason. I've tried it with grouping the pieces as well as just selecting a bunch and moving them at once and the same thing happens. Even when I do each piece individually it seems to happen.

Last edited by TehDuke; 10-08-2010 at 04:53 AM.
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10-08-2010, 08:44 AM   #2
The thin red line
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Join Date: Aug 2009
Location: England
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You could try deleting the history at the start of the animation, that might work............dave

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10-08-2010, 04:17 PM   #3
Join Date: Dec 2005
Location: Toronto
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Check in your graph editor to see how the curves are behaving at the points where you notice unwanted rotation. You might have to modify the tangents. I'm not sure exactly what the problem is, but I have a suspicion it has to do with a combination of the tangents and rotation in a local axis, which gets converted to global rotation with messy numbers. Hope that helps.
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13-08-2010, 07:36 AM   #4
LauriePriest's Avatar
Join Date: May 2003
Location: London
Posts: 1,001
Thats gimbal lock, apply a Euler filter to your animation, that should get rid of the locking but im not sure animating a rubicks cubeis technically possible with a Euler system. I did something symilar but its quite complex to set up.
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