Re: [Sripting] Removing particles via event?

Date : Wed, 12 Dec 2007 11:10:14 +0000
To : XSI(at)Softimage.COM
From : "Dan Yargici" <danyargici(at)gmail.com>
Subject : Re: [Sripting] Removing particles via event?
Coming back to this - does anyone know of a way to rendermap out Motion Vectors in world space?

Ideally I'd still like to be able to do something along the lines I mentioned in my first post....

Cheers,

DAN


On Dec 10, 2007 3:47 PM, Dan Yargici <danyargici(at)gmail.com> wrote:
Hi Morten, It's a sound idea, but it would be a knot in the pipeline and probably wouldn't be worth it for what it would add to the shot...

Cheers,

DAN


On Dec 10, 2007 3:36 PM, Morten Bartholdy < xsi(at)colorshopvfx.dk> wrote:
How about using a motionvector shader and try and hook emissions up to that? Might require you to rendermap a texture sequence but it seems to me you could find a clip value and emit particles when the values are above it.
 
Morten Bartholdy
3D & VFX Artist
 
----- Original Message -----
From: Dan Yargici
Sent: Monday, December 10, 2007 4:21 PM
Subject: [Sripting] Removing particles via event?

Hi all,

Is it possible to remove particles from a cloud using a Particle Event?  The ParticleCollection object doesn't seem to support it....

Basically, I'm looking for a way to only emit particles based on the velocity of the object (or it's deformations).

I would have preferred a SCOP that would update a weightmap on the geometry which I could then use to drive the emission, but it doesn't seem doable....  The way I'm trying to approach it now is to emit all the particles and then clean out the one that are age=0 and velocity below a certain threshold - thus giving the impression that they were never there in the first place... seems like a really crappy way to be doing this, I know - if anyone has any suggestions I'm all ears!

Cheers,

DAN




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