Setting up constraints for rig

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  06 June 2013
Setting up constraints for rig

Hey! I wonder could anybody can help me because my skills when it comes to rigging are quite poor :)

So I have this rig for machine... quite simple:
http://i.imgur.com/mVXswEe.jpg

I have set up every second IK for each leg to be sticky so I can move body of the machine and legs (actually only the last parts) remain their position, but I don't want them to also change their rotation like they do right now:
http://i.imgur.com/StfGBsV.jpg

Does anybody know or have any idea how to set up constraints for that?

Thanks in advance and sorry for my english
 
  06 June 2013
You could constrain the last joint in your ik chain to the foot control, it's best to make sure the foot control's pivot is at the position of the last joint before you do this.
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  06 June 2013
I agree, point constrain the ikHandle to a translation object.
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File Type: zip point_constrain_.zip (11.6 KB, 3 views)
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  06 June 2013
Originally Posted by Stoehr: I agree, point constrain the ikHandle to a translation object.


I should have specified, an *orient constraint. I don't believe a point constraint is necessary, it might be easier to just parent the ik handle under the control, then orient constraint the ankle joint to the control. I call it an ankle joint, in this case it's whichever joint is at the end of the chain.

This will prevent the foot from moving when the body does.
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  06 June 2013
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