[Radiance-general] Can't get gensky to work without sun...

[P George Lovell]

Hi Everyone,

I'm trying to render some images for a perceptual experiment. When I 
render with a sunlit sky (+s) I have no problems, but the variations in 
illumination are too great - I need more uniformity. But when I change 
the options to no sun (i.e. overcast "-c", or sunny without sun "-s") I 
get an error from rpict:

rpict: warning - no light sources found.

Some key parameters:-

gensky 01 01 13 +s -a 56.3400 -o  0 -m 0.00 -B 27.93 <-- substitute "+s" 
with "-c" or "-s"
skyfunc glow skyglow 0 0 4 1 1 1 0
skyglow source sky   0 0 4 0 0 1 180

rpict" -vf j:\radiancefiles\27_07_2011_13_10_893074_#0\view.vf  -x 1800 
-y 1800 -vh 15.30 -vv 15.30 -st 0.01 -ar 512 -aa 0.10 -ab 5 -lw 0.01000 
-lr -10 j:\radiancefiles\27_07_2011_13_10_893074_#0\wholeScene.oct > 
j:\radiancefiles\27_07_2011_13_10_893074_#0\wholeScene.rpict

This is all running on mingw radiance on a windows PC. Anyone have any 
suggestions?

Thanks,

George


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