Export pyro to polygon alembic with vertex color

[squardis]

Hi,

I was trying something stupid but it doesn't seems to work.

I converted some pyro to polygons.

Get the Cd heat from volume.

Promote it to vertex color.

Export to alembic

But the colors aren't visible in Maya when I import it. If I do it with some other object. It works.

Do I overlook something?

[Atom]

I think Maya has a different name for Cd. Like Cf or something. You may need to rename your Houdini Cd to the Maya equivalent before exporting.

[squardis]

1 hour ago, Atom said:

I think Maya has a different name for Cd. Like Cf or something. You may need to rename your Houdini Cd to the Maya equivalent before exporting.

THNX for your fast reply. I understand what your saying but thats not totally true. (but i tried to change the name to see if that fixed it, but no luck)

If I test it with a grid > color it > use a object for transfer color attr. > promote to vertex color > and export with alembic it works in viewport.
I just need to set my colorSet to Cd for render in arnld, e.g.
 

But, if I try it by another object in my colorSet editor I see the attribute named"Cd".
If I do that with Pyro converted polygons. there is no attribute listed in maya.

read the file back in Houdini it gives me the color though...

 

[Archi]

I don't know about Maya but in Max such a thing happened to me when I had on my alembic mesh tons of other attributes and groups, if it's the case you just attrib delete, group delete everything except Cd

[fencer]

Does Maya use vector4 for color? As I remember I did (ones) export velocity to Maya with converting to vector4.

[toadstorm]

Vertex colors will work in Maya from Houdini if:

• the attribute is vector3 RGB (it's possible this could work with vector4, haven't tried it)
• it's a vertex attribute
• it has the attribute type "color" (use the VEX command setattribtypeinfo() to set the type to "color" if it isn't already)

Here's a sample file, this displays with vertex colors in Maya as expected:

meshed_pyro_vtx_color.hip

Edited February 28, 2018 by toadstorm