In article <3973D2BD.A92017E7@peak.edu.ee>, Margus Ramst 
<mar### [at] peakeduee> wrote:

> Yes, but is this really worth the computational expense? I suspect 
> the spin of individual particles has little perceptible effect on the 
> overall behaviour a large particle system.

It may, especially when you have a large number of particles with the 
same spin bouncing off of an object. And what if the particles are 
*supposed* to represent a large number of large objects?
As for the computational expense...it should, of course, be able to be 
turned off. Maybe a simple "angular_forces on/off" flag.

-- 
Christopher James Huff - Personal e-mail: chr### [at] maccom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
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