[Radiance-general] Illuminance calculation on a virtual surface?

[Rob Guglielmetti]

Raphael Compagnon wrote:
> Hello Jim,
> 
> You can simply slightly change your script by specifying rtrace option 
> -fac that will directly generate a Radiance picture on its output. Of 
> course, you will surely have to increase the density of the calculation 
> points piped to rtrace in order to have a picture with reasonable size.

How about making the plane out of a trans material with zero reflectance 
and 100% transmission?  Martin (Moeck), didn't you mention that 
technique once?  Or am I confused again? =8-)

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      Rob Guglielmetti

e. rpg at rumblestrip.org
w. www.rumblestrip.org