[Radiance-general] mirror specular reflections

[Jack de Valpine]

Hi Chris,

You may have to adjust the specular threshold / jittering options: -st 
and -sj. Also you may need to set -dr to something other than 0. What 
kind of effect are you expecting to see?

-Jack

-- 
# Jack de Valpine
# president
#
# visarc incorporated
# http://www.visarc.com
#
# channeling technology for superior design and construction


On 5/11/2011 3:16 PM, Chris Coulter wrote:
>
> Good day list.
>
> I'm trying to test various materials for use in a light shelf. 
> Currently, I'm testing a simple box (genbox wall room 10 10 10 --i) 
> with south wall removed and the floor's material set to a "mirror" or 
> variations of "metal". My gensky definition is: gensky 03 21 9 +s -a 
> 39.7 -o 105.2 -m 105, which places direct sun on both the floor and 
> west wall.
>
> When viewing the octree in rvu, there is no specular reflection from 
> the floor with either mirror or metal (with 0 roughness). However, a 
> metal with small roughness has some scattered reflection. I've tried 
> changing parameters on many of the rpict options to try to solve the 
> issue, but have had no luck.
>
> I'm currently running a HEAD distro from early January this year. 
> About 15 months ago, I was able to get specular reflections from a 
> mirror (similar study) from the 4R0.
>
> Any help/advice would be greatly appreciated.
>
> *Chris M. Coulter, LC, IESNA, LEED AP*
> Associate
>
> Lighting Designer
>
> President, Detroit Section of the Illuminating Engineering Society
> ............................................................
>
> *SmithGroup*
> 500 Griswold, Suite 1700
> Detroit, MI 48226
> *
> **t*313.983.3600
>
>
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