fog simulation with direct sun light

Dear all,

I'm trying to visualize the effect of light traveling through
participating media. We want to use tracked mirrors to draw light beams
into a foggy or misty sky.

The fog example in RwR (p. 460) works well for artificial or electrical
light sources.
Is there also a opportunity to use direct sun light generated with
gensky instead of artificial light sources?

Maybe like:

void mist boundary
1 sun_light
0
7 0 0 0 .4 .4 .4 .45

Cheers Kai

It should work. Did you try it? The main requirement is that your mist has a finite extent. Beware that the sun is a lousy source for creating visible beams in a uniform fog, as it floods light everywhere. Similarly, redirected light by mirrors will likely be drowned out by the scattering of sunlight throughout the participating medium, unless you have some way to reflect the light from unfoggy regions to foggy regions.

-Greg

ยทยทยท

From: "Kai Babetzki" <[email protected]>
Date: June 2, 2010 1:38:05 AM PDT

Dear all,

I'm trying to visualize the effect of light traveling through participating media. We want to use tracked mirrors to draw light beams into a foggy or misty sky.

The fog example in RwR (p. 460) works well for artificial or electrical light sources.
Is there also a opportunity to use direct sun light generated with gensky instead of artificial light sources?

Maybe like:

void mist boundary
1 sun_light
0
7 0 0 0 .4 .4 .4 .45

Cheers Kai