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A.R.T. joint translate is wrong after control rig building


So I have been rigging a character for the past day, painting weight on the left side only. Then when mirroring to right part I noticed there was an issue in the skeleton generated by A.R.T., the position of "index_03_r" is wrong, messing up my geometry, and I cnanot see any obvious reason for that.

alt text

So what I did is I unbind the skin on the right arm and hand, then delete the right arm joints and mirror the left arm joints, then re-bind and re-mirror skin weight. Everything is fine until I hit "Build Control Rig", where the character get all messed up like this :

alt text

I know why it is happening but I don't know how to solve it. basically, the mirrored joints do not have the same "Translate X-Y-Z" as the joints on the left side. For example, if the Translate of the left clavicle is "X 20, Y -1, Z 2", then the Translate of the right clavicle should be "X-20, Y-1, Z 2", but instead I have very different values between mirrored joints... It is fine as long as it is joints (they act as they are supposed to) but once the control rig is building, he automatically changes the Translate of mirrored joints to what they should really be and it mess the character.

How can I solve that ? I don't want to restart painting the skin weights all over again, I have many other things to do ...

Product Version: UE 4.12
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asked Aug 03 '16 at 06:03 AM in Everything Else

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avatar image Dinfael Aug 04 '16 at 12:02 PM

Hi, this problem remain unsolved so if anyone could provide some leads ? ... I already tried alot of things and tricks but I always have at least one bone that does not want to cooperate when replacing the originally created bones ...

avatar image Dinfael Sep 08 '16 at 04:54 AM

Still no solution for this yet, even though I can do it all over again to solve the issue, it would be nice to know how to solve this problem if it ever happen again to spare time doing the same things twice. If you know of another thread treating this issue the url is welcome, I really could not find any reference to this.

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