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andrewhwood / alembic

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Read/Write per face per vertex color out of Maya for I/O PolyMesh/SubD #216

Closed GoogleCodeExporter closed 9 years ago

GoogleCodeExporter commented 9 years ago 
See this discussion thread
http://groups.google.com/group/alembic-discussion/browse_thread/thread/67e819525
d7711c0

Convention for storing per-vertex, per-face vertex color under ArbGeomParams. 
Interesting detail regarding storing RGB vs. RGBA vs A

Original issue reported on code.google.com by ble...@gmail.com on 26 Aug 2011 at 2:31

GoogleCodeExporter commented 9 years ago 
option SimpleAbcViewer to show
zeno update
doc
houd reader
katana reader

Original comment by ble...@gmail.com on 26 Aug 2011 at 11:53

GoogleCodeExporter commented 9 years ago

Original comment by ble...@gmail.com on 19 Sep 2011 at 9:51

GoogleCodeExporter commented 9 years ago 
Changing the scope on this, as the discussion is mostly in regards to Maya and 
it's unlikely we would be able to establish a convention for all apps.

So for writing from Maya:
This data will be optionally written when a flag is specified, something like: 
-cfv and -colorFaceVarying, -cpv and -colorPerVertex is incorrect since the 
data in Maya is actually Face varying vertices.

The data will be written out as indexed either as C3 or C4 depending on the 
color representation in Maya.  If they are using Alpha, it will be written out 
as C4.

As mentioned in the thread metadata will be added for these attributes 
indicating that it was originally from Maya.  The value part of the key meta 
data will be used to determine whether this color set happened to be the 
default color set.

Original comment by miller.lucas on 22 Sep 2011 at 8:10

GoogleCodeExporter commented 9 years ago

Original comment by miller.lucas on 6 Oct 2011 at 1:34

GoogleCodeExporter commented 9 years ago

Original comment by miller.lucas on 7 Oct 2011 at 9:49

GoogleCodeExporter commented 9 years ago

Original comment by miller.lucas on 15 Oct 2011 at 12:29