Issue with exporting/importing deformed geo

[Eddie Hoyle]

I'd like to export geo that has been deformed (but not animated), then import the changes. Currently, unless I have some offset applied to the deformer between two frames, the geo does not merge correctly on import. It just sits at pre-deformed pose. If I import and Add, the geo comes in deformed and looks right, but why doesn't the merge do the same?

A small example
* Create a cube and skin it with a single joint

* Move the joint away from origin (do not keyframe)

* Export the cube cache

* Start from a fresh scene, create a cube and try merge the cache

* The cube will have reset to 0, 0, 0

I've found if you animate the joint even with the tiniest offset between two frames, the 'deformed' position of the cube carries over correctly.

Am I missing something here? Would really appreciate some help. Thank you!

[Eddie Hoyle]

I should note, I'm using Maya 2013.

[Lucas Miller]

I'm not sure what deformer you are using but based on your description it sounds like constant geometry is skipped.

Lucas

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[Eddie Hoyle]

I've just been using a skin with these examples, but I moved onto trying clusters and lattices, etc and found it still wasn't being applied.

I've just tried it in Maya 2014, and if I run:

AbcImport -mode import -debug -connect "|pCube1" "C:/temp/cube.abc";

...twice, the geo is gets updated on the second run. Can I fix this in any way? I'm not very experienced with the code and under-the-hood workings of Alembic.

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[Francois Chardavoine]

Hey Eddie -
If you can upload a simple maya 2013 file with the exact AbcExport command you're running, it will make it easier to figure out why it's not behaving as you'd expect -

Is that cube file something you can share with us?
Francois.

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[Eddie Hoyle]

Here we go, have a look at this:

https://www.dropbox.com/s/9j6328ntas4ih15/AlembicCubeExample.zip (18kb)

Here are my export and import lines:

// Export

AbcExport -j "-frameRange 1 24 -root |pCube1 -file C:/temp/AlembicCubeExample/cube.abc";

// Import

AbcImport -mode import -connect "|pCube1" "C:/temp/AlembicCubeExample/cube.abc";

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[Lucas Miller]

Thanks for the example, I was also able to replicate the behavior where the changes only stick after calling that AbcImport command twice on a different example as well.

I wonder if history or undo stack or something  needs to be cleared out even after all the connections are deleted but before the createInPlace is called on the mesh?

Lucas

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