Maya: Adding second color per vertex

#1

Hi all,

The artists at work wish to be able to modify their prelit scenes by tweaking vertex colors. However, if they move a light or re-light the scene for whatever reason, they would like the color tweaks to remain intact.

To do this, I’d like to be able to store a second color per vertex (or even a “tweak” delta value). Although I can use the Maya UI to add a vector attribute per vertex, and can do a similar thing through script, I’d ideally like to do this in a plugin. I also need some way of altering the rendered vertex color based on this extra tweak color.

Well, I hope that makes sense to someone, and thanks for any ideas you can chuck this way.

cheers,
stoo

#2

Look up blind data and dynamic attributes in the developer giude, and there’s more than one source code example in the dev kit. Basically the plug-in version of what you can do with MEL AFAIK

#3

Hi,

Thanks for the reply. I’ve had a look through the dynamic attribute and blind data documentation, and played around with the blind*DataCmd examples. I can happily add a new attribute per node, but am having trouble actually adding the data per vertex. Is there something obvious I’m missing (normally there is)?

Thanks,
stoo

#4

Well for per-vertex stuff I guess you just add an array attribute with the same number of elements as vertices…

#5

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