iCube R&D Group Support Forum

Hi,

is it possible to animate the surface used to scatter onto?

I'm thinking if you wanted to have an earthquake etc.

It seems to work (kind of in the viewport) but it looks like the seed value changes from frame to frame.

Also when it renders it doesn't appear to animate the proxy positions

thanks.

Steve

OK, after a bit more investigation.

Using mental ray as the renderer, the surface position is only respected on a single frame - so if you render frame 100 for an animated surface, it will be correct, but not if you render frames 1-100.

Using Vray it is better, but the seed value seems to change on a deforming surface, so proxies pop on and off , unless you use regular pattern. (Using random seems to cause popping - which kind of makes sense, but doesn't really work for animations)

So I think the mental ray problem is a bug, but VRay seems workable - although not sure if having random only set the position on the first frame is possible.

Cheers

Steve

"Using mental ray as the renderer, the surface position is only respected on a single frame - so if you render frame 100 for an animated surface, it will be correct, but not if you render frames 1-100"

It will be fixed in next build.

Scatter algorithm is based on square of each surface polygon. So, when you animate surface, this squares is changed and this lead to redistribution.

Great, thanks Karba.

Regards,

Steve