Hi!

I'm experimenting with POVRay to simulate a simple physics-lab setup involving
the following:

A spot light
A Mirror Surface (does not need to be visible, just must perfectly reflect the
light.)
Some shadow generating objects before and after the mirror (invisible to the
camera too)
A semi-transparent Screen that catches and displays the reflected photons.

I've accomplished this task already by using "double_illuminate" for the
screen., but I'm struggling with optimizing the render time.
I understand that photons take their time to be calculated. But for a simple
setup like
this I hope I can keep the render time under halve a minute for a 600x800 image.
Can someone give me some hands on tipps about best global settings and about how
useful
commands like "autostop" and other options like "adc_bailout" could be?
Maybe with a little example script, optimized for fast calculation, showing a
sharp and crisp projection of light reflected by a rectangular mirror against a
screen. I don't need fancy blending and anti-alias. Speed is what I seek :-) ...
Thanks in advance!!

PS: I think POVRay is the cooles thing since melted cheese!

Andi

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