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View Full Version : Particles and Hypervoxels

lwanmtr
08-22-2008, 03:34 PM
I have a couple questions.

First, I have an emmiter (you can see the setting in PartSets.jpg). Its emmitting they I want fine. I have a collision object that is supposed to channel the particles down a trench and out (you can see it's setting in CollSet.jpg). I am getting a fair amount of particles passing through the object. The settings I have are the best I've been able to acheive balancing pass through/bounce/etc.

Is there a way to insure that particles will not pass through the collision mesh?

If I set the particle speed to higher it really bounces through the mesh.

Second. Hypervoxels.

I am getting the smoke to look like I want (at the cost of render time), but my main question is motion blur. I have tried a real lens with photoreal blur and a classic camera and there does not seem to be any motion blur happening at all. Is this normal? Or is this a limitation of volumetric hypervoxels?

Looking for any help/tips or anything. Thanx
lwanmtr
08-22-2008, 04:10 PM
Ok, I fixed the particles passing through. My original was made up pf prims that were into each other...I made a closed mesh and it worked great. Still not sure about the motion blur thing.
Andrew March
08-23-2008, 11:07 PM
Have you checked the particle blur box under motion blur options?
shrox
08-24-2008, 01:07 AM
Also so you don't have that puffball effect, I use a gradient on the particle size set to Relative Particle Age. You'll have to mess with it a bit, but it works out well, here is an example:

http://www.vimeo.com/1456340
lwanmtr
08-24-2008, 01:22 AM
to lower the size or make it bigger?
shrox
08-24-2008, 01:25 AM
I guess I forgot. Time this with the dissolve envelope. They will expand and fade out nicely.
Mr Rid
08-24-2008, 05:16 AM
Have you checked the particle blur box under motion blur options?

'Particle blur' only affects partigons and not HVs. Is really an ancient feature for quick-n-crude particle moblur that I no longer see any use for.

But a lack of HV moblur is either due to Volumetric Antialiasing not being enabled in the Volumetrics tab, or Motion Blur passes in the camera's Motion Effect tab set to only 1.