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Published 20 hours ago • verified publisher icon alicevision

Add color on PC

Open eprana opened this issue 8 years ago • 6 comments

eprana avatar Jun 08 '16 08:06 eprana

Color is not correctly set in ABC. Should be V3dArray named rgbPP

eprana avatar Jun 10 '16 13:06 eprana

Ok, so we need to change the attribute type but we will keep the name as "color" sounds more standard than "rgbPP" and nuke recognize it.

So we need to copy the values from color to rgbPP during the load in mayaMVG.

fabiencastan avatar Jul 15 '16 19:07 fabiencastan

They use OC3fArrayProperty in the PointsTest: https://github.com/alembic/alembic/blob/master/lib/Alembic/AbcGeom/Tests/PointsTest.cpp#L254 https://github.com/alembic/alembic/blob/c8b92e656a5fcd4373c7a613b8f4e1069446f492/lib/Alembic/AbcGeom/Tests/SubDTest.cpp#L124

As we do in openMVG: https://github.com/poparteu/openMVG/blob/popart_develop/src/openMVG/sfm/AlembicExporter.cpp#L62

fabiencastan avatar Jul 15 '16 20:07 fabiencastan

Or maybe "rgb": https://github.com/alembic/alembic/blob/c8b92e656a5fcd4373c7a613b8f4e1069446f492/maya/AbcImport/NodeIteratorVisitorHelper.cpp#L577

fabiencastan avatar Jul 15 '16 20:07 fabiencastan

Alembic importer in Maya set all colors to (0, 0, 0) (with attribute of type V3dArray named rgbPP, rgb or color)

eprana avatar Jul 20 '16 15:07 eprana

Per particle attributes are reinitialized on alembic import in Maya.

eprana avatar Jul 20 '16 16:07 eprana