[Radiance-general] mirror specular reflections

[Thomas Bleicher]

Chris

The main options should be -ab (for at least 1 bounce) and -dr (for "direct
relay" which is what the mirror material creates). Have you incremented both
of these parameters?

Regards,
Thomas

On Wed, May 11, 2011 at 2:16 PM, Chris Coulter <Chris.Coulter at smithgroup.com
> 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
>
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