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Old 01-21-2005, 09:22 AM   #1
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David Urbansky
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Strange Problem with constraints

Hi! I'm doing a animation of a large crane for my employer, but I've come across a problem I can't seem to figure out. I'm trying to get the hydraulic cylinders constrained so that they animate properly. To do this I am using "TRACK TO". I select the bottom half of the cylinder, and the pivot point of the upper cylinder, and apply the constraint. No prob, works perfectly. The problem is that when I try to do the same thing with the upper cylinder, it doesn't work. Instead, the "const" box turns red, indicating a problem. I can orient it in any direction and it will work, except in the direction I need it to be in (which is Y). I don't understand? Any ideas?
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Old 01-21-2005, 01:01 PM   #2
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Roland Hess
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Join Date: Oct 2002
Posts: 357
Go into the Constraints panel and start playing with the Track and Up axis buttons. That's most likely your problem.
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Animating with Blender: How to Create Short Animations from Start to Finish
Old 01-21-2006, 02:00 PM   #3
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