[Radiance-general] Antimatter and windows

[Lars O. Grobe]

Hi Zack!

> void antimatter opening
> 1 grey_0.60
> 0
> 0

This will make the backface of your antimatter appear grey.

void antimatter opening
1 void
0
0

Will have invisible backside faces, I think this is what you want.

Cheers, Lars.