I’m testing the new rotationPP attribute in the nParticles, in particular when the particles are shaded with the fluid shape. Because I never found a way to rotate the particle so you don’t recognize that is always the same fluid shape, and I thought that with Maya 2011 finally I have the chance.
But this still doesn’t work. I mean…if I enable the “compute rotation” and then I put a creation expression in the rotation, just for have a random value, all the particle look the same.
From the documentation:
Rotations are initiated from the friction generated between the particles and the collision object. You can control the nParticle object’s tendency to rotate during collision by adjusting the Rotation Friction and Rotation Damp attributes. See [Rotation Friction](file:///usr/autodesk/maya2011-x64/docs/Maya2011/en_US/files/WS1a9193826455f5ff-2ade9d9118a20d4f81-d59.htm#WS73099cc142f487553bd5b66812435c29801-546b) and [Rotation Damp](file:///usr/autodesk/maya2011-x64/docs/Maya2011/en_US/files/WS1a9193826455f5ff-2ade9d9118a20d4f81-d59.htm#WS73099cc142f487553bd5b66812435c29801-5466). The Friction value of the collision objects can also affect the tendency of particles to rotate. Rotation Friction does not change how Friction affects nParticle motion during collision. See [Friction](file:///usr/autodesk/maya2011-x64/docs/Maya2011/en_US/files/WS1a9193826455f5ff-2ade9d9118a20d4f81-d59.htm#WS1a9193826455f5ff-2ade9d9118a20d4f81-d20).
Rotation PP (rotationPP) and Angular Velocity PP can be used with expressions to add and control per-particle rotations. Rotation PP is the current rotation of the particle and Angular Velocity PP sets the rotational velocity of the object about its origin.
I have also tried to have a collision, but still…
Then I tried to instance the fluid shape, but my maya seems to doesn’t like at all, because all the times that I press render it crash!