[Radiance-general] Making a material invisible

Sat, 27 Sep 2003 08:58:44 -0700

Hi Waldo,

I'm afraid I didn't read your original posting before sending my last 
response -- it seems you already used the trans specification I 
recommended.  In fact, this should be completely transparent.  If you 
are seeing differences in your results, I suspect these are due to 
randomness in the calculation, and not due to interactions with this 
material.

-Greg

> From: WA Bont <[email protected]>
> Date: Fri Sep 26, 2003  5:28:17  AM US/Pacific
>
> Hello,
>
> for speeding up different renderings of a sunshading device it's very 
> easy to switch the material of the device and see what is the impact 
> (like changing color, trancemittance and so on). but...
>
> i also want to make one rendering without this sunshading device and i 
> don't want to make changes in the drawing. so i want to make it 
> invisible!
>
> i've tried the following materialsettings:
>
> # invisible: invisible : test
> # 0
> void interface invisible
> 0
> 0
> 8 1 1 1 1 1 1 1 1
>
> and
>
> # invisible2: invisible2: test2
> # 0
> void trans invisible2
> 0
> 0
> 7 1 1 1 0 0 1 1
>
> but if i'm comparing the results (with findglare and glarndx) after 
> removing the sunshading device the results are all slightly different. 
> what is a good way to simulate an invisible material, without 
> interfering the sun and light?
>
> thanx in advance
> with regards,
> Waldo Bont
>
> Student at the University of Technology Delft, Civil Engineering, 
> Building Physics.
> Employee at engineeringcompany moBius consult
>
>
>
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