Mirroring broken from 2016 to 2018

[blaabjergb]

Here is a tricky one, and it's killing me. 

Previously it was the easiest way to mirror, simply put -1 in the scale of which axis to mirror, and it used to work in maya 2016.

In 2018 I am getting a wierd translation behavior which does not correspond with the way that I drag the mouse cursor. Why is this happening?

Rotating in various axis 180 to achieve the samme result get me... well, the same result.

Video below displaying my problem.

https://youtu.be/fgSEND7KOEU

[Anonymous]

Welcome to the community.

In the meantime this may help. Duplicate your negative scaled model. Freeze scale on the duplicate. Parent constraint the original model to the frozen duplicate. Animate the duplicate.

If your issue is resolved at any point, please click Accept as Solution on the posts that helped you so others in the community can find them easily.

Edited by
Discussion_Admin

[blaabjergb]

Was something re-written?

It interestingly doesn't happen if I scale in Y or Z, only in X.

[sean.heasley]

Hi @blaabjergb

@Anonymous is not an Autodesk employee so please disregard any comments he makes about knowing what the developers are doing and/or any inner workings here at Autodesk.

That said he made a good suggestion duplicate your negative scaled mode and freezing the transforms etc. Did it help you at all?

If your issue is resolved, please click Accept as Solution on the posts that helped you so others in the community can find them easily.

[Anonymous]

After much frustration I found that this issue applies to Maya 2018 on mac os.

I tried duplicating the issue on Linux, windows and another mac, but the problem only arose on osx.

Apparently there is a mismatch between the viewport translation tool and the values being input into the mirrored object.

selecting an object and translating it with the move tool in the viewport should move the object in that direction and the user should not hav eto worry about the translation values, ewather or not they are - or +.

I don't know why, but it's only happening with Maya 2018 on osx.

It's easy to test, I just created a curve, grouped it, then duplicated the group and set scale x to be -1. The mirrored behavior works fine in all other os in maya 2018, rotation also works as predicted, but translation of the curve is wrong.

[sean.heasley · Accepted solution]

Hi @Anonymous

Ah ok thanks for the detailed steps to reproduce!

I'm gonna go ahead and log this with our dev team so its on their radar!