howdy folks,

I am looking for a solution how to get out a motion vector data from polymesh deformed by some ICE deformers, exactly it is a polymesh grid deformed along curve. Going to use it in RSMB and all I was able to get so far are only motion data from objects that are animated normally. I found it has something to do with UserMotion property and pointUserMotions attribute, however I have no idea how to set this thing to work.

Thanks for an advice.

Jr.

Not 100% sure if this works,
but you might want to take a look at this blog post.

The “other” Softimage community: si-community.com

thanks for the idea. Did try it but it wasn’t working really. Tested only first part but generated points never changed their color based on a movement. Maybe it is just for the SPH simulations, the compound is pretty complex.

Yeah, I tried it with a regular ICE particle simulation today and the effect is extremely subtle. The colors do change according to the motion, but the resulting colors are not discernible with the naked eye, unless you crank up the speed of the particles or deliberately overdo the effect in your compositor. So probably not well-suited for subtle deformations.
Another silly idea that might just work: use the Polygonizer to “remesh”
your mesh in a separate pass and create Motion Vectors with the Polygonizer…

The “other” Softimage community: si-community.com