Sockets don't flip axis on import from Y up Maya

Development Pipeline & Plugins
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1

Sockets parented to a mesh do not change their Axis type on import from Maya 2016. This is regardless of me setting either Y up or Z up in the FBX export settings. The mesh that the locators are parented to seem to come in just fine.

Repro Steps:

  1. Have Maya set to Y up.
  2. Create a plane in Maya (I used 2016 Extension 2)
  3. Create a locator and rename it to Socket_Whatever
  4. Snap the locator to a corner of the plane.
  5. Duplicate and snap locators to the other corners.
  6. Export out via FBX, with either Y up or Z up as the axis conversion type.
  7. Import into Unreal ( I used 4.13)
  8. Open the mesh in the mesh viewer and turn on socket viewing.
  9. Notice the sockets are vertical rather than at the plane’s corners.

113375-socketbugaxis.jpg
113375-socketbugaxis.jpg2892×900 363 KB

2

Hey NigelWeir_Torus,

I’m having issues reproducing this. It seems to be importing as expected for me in 4.13. Can you send me the fbx you’re using?

3

Sure. Here’s two, one with FBX set to Z up, another to Y up. Both are newly made today and show same behaviour.

Y Up: Dropbox - File Deleted
Z Up: Dropbox - File Deleted - Simplify your life

4

Ahhh, it looks like it only happens when you have the locators parented to the mesh in Maya. As a workaround, you can try unparenting them and it should import as expected.

I’ve entered UE-38284 for this issue though.