[Radiance-general] Making a material invisible

[Greg Ward]

Hi Waldo,

Raphael's answer is correct, but if you need a material that is 
completely transparent instead of a void surface, use the following 
specification, instead:

void trans completely_clear
0
0
7 1 1 1 0 0 1 1

-Greg

> From: WA Bont <W.A.Bont@student.TUDelft.NL>
> Date: Fri Sep 26, 2003  6:27:40  AM US/Pacific
>
> and it is a correct answer to my question (so my question wasn't that 
> perfect). i don't want to make the surface (your polygon) invisible, 
> but i want to give the surface itself a material (like trans, plastic, 
> interface) to make the surface act as being just "air".
>
> maybe it helps to tell you i've been drawing the room in SCRIBE, which 
> is the drawingprogram in ADELINE 3.0. so i already made the drawing, 
> but now i want to put the sunshading device "on" (in the context of 
> visible) and "off" (in the contect of invisible), whitout having to 
> change my drawing in SCRIBE. For testing and comparing my "off" 
> results i had to remove the sunshading device in SCRIBE but it's not 
> an easy way. The results of my invisible materialsimulation are 
> different from the one after i had removed the sunshading device in 
> SCRIBE. The differences are not large.
>
> thanks in advance again
> Waldo