Hi, is the bone duplicate sym broken or the Roll parameter ?

[Caveman]

Hi, so I have mirrored the bone hierarchy from one side to the other, it mirrors fine. But if I move the effector on the mirrored bones they get some new values of their own which slightly offsets them from the original mirrored orientations. This is driving me nuts.

Please check the file, it's done in Softimage 2014 Sp2.

Any help would be much appreciated

[Caveman]

There is definitely something wrong with the Bone duplicate symmetry. I used the duplicate symmetry on the bone chain and then again used duplicate symmetry on the nulls and controllers and they don't match up with the mirrored bones having some slight offsets. Matched the translation of the null before position constraining the effector of the leg bone chain and still get the offsets.

I am stuck. Think I will port the project to Maya.

[csaez]

I just downloaded your scene and it seems to work fine.

Code: Select all

Application.DuplicateSymmetry("B:FootRoot_LF,B:LegRoot_LF,B:Foot_CTRL_LF", "", "", 1, 0, 0, 0, "")

[Caveman]

Hi, the problem occurs when the effector is moved. Please duplicate symmetry the leg chain (not the foot chain) and move the leg effector. Then undo the movement and check the first joint(kinematic joint) it should have some values.

The problem may not be with the duplicate symmetry at all, but why won't the joint stay in it's perfectly mirrored state

Maybe the thread title is incorrect

[Caveman]

Hi, I think I have solved it. I used chain up vector ops instead of the roll parameter, so far working great. Let's hope it stays that way

[EricTRocks]

Yeah you need to use up vectors to keep a consistent solve of the IK usually.