[Radiance-general] Re: [Radiance-addons] Forward ray tracer

[Rob Guglielmetti]

Anthony J. Farrell wrote:
> Hi All!
> 
> I am currently using Radiance (PC based) for analysing the use of 'light
> pipes' in deep plan buildings. A light pipe is a highly specular reflective
> surface (97%+) which redirects light from the zenithal sky into a room.
> Unfortunately the simulation breaks down because of the
> 'backward-ray-tracing' nature of the PC Radiance suite of software I am
> using.

Yup.

> I have now installed Linux on my PC and am installing Radiance on it. Is it
> possible to get a patch that allows Forward ray tracing (100 reflections or
> more) for use with the light pipe?

Yup!  You'll want to run, don't walk, to this website:
http://www.ise.fhg.de/alt-aber-aktiv/radiance/photon-map/

AFAIK, this is no longer being actively developed, but the program's 
author does lurk the hallowed halls of this mailing list.

----

      Rob Guglielmetti

e. rpg@rumblestrip.org
w. www.rumblestrip.org