|03 March 2013||#1|
Ft. Lauderdale, USA
Join Date: Jul 2003
RP plane/ Joint orient problem
I have a rigging dilema that's driving me crazy. I am rigging a character with a wide stance and his knees are pointing outwards. Normally I would create a simple leg joint chain, reposition the joints (using only the translate) to fit in the geometry, and adjust the local rotation axis to make sure that everything is rotating in the correct axis. I would then add a IK handle and a pole vector constraint. No problem.
However, I was going through a tutorial on the proper way to setup an IK/RP handle on a 3 joint arm setup. The tutorial stresses the importance of having 3 vectors on the same plane when setting up our joints, IK handles, and pole vector constraints. This is obviously to avoid any flipping and get the most reliablity out of our RP solver. Furthermore, the tutorial goes on to explain that the proper placement of the vectors is dependent on the middle joint (elbow) having zeroed out joint orient rotations except in the bend axis, and the translates must be zeroed out except for the down the joint axis. So far I understand what the tutorial is saying, but when I go to create the leg chain for the character mentioned above, I cannot get the middle (knee) joint to get the proper joint orient values that are required for the vectors to be placed on the same plane, due to the legs going off on an angle and not going straight up and down. My question is how do I get the vectors to sit on the same plane while the joint chain is pointing off to the side, or how do I get the knee joint to have the proper values in the joint orient. I've got a link below to the tutorial I was following.
|03 March 2013||#2|
Not a new member.
Senior Technical Artist
Join Date: Aug 2004
I'm a bit of a novice with Python, but I've been doing this in maxscript for a while so I wanted to try to translate it into pymel.
I don't know why the code formatting is crazy. It's randomly inserting spaces and tabs and indenting.
Last edited by Rotu : 03 March 2013 at 01:14 PM. Reason: formatting
|03 March 2013||#3|
Join Date: Sep 2003
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