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

[Roland Schregle]

Rob Guglielmetti wrote:
> 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.

*LURK*

Thanks for the plug, Rob! :^)

Yep, someone finally hit the nail on the head there. Lightpipes are a 
showcase application for forward raytracing, as you'll see on the 
webpage. Check out the lightpipe scene in the egg samples; that should 
get you started. Lemme know how the addon works for you.

See ya!

--Roland


-- 
Roland Schregle
PhD candidate, Fraunhofer Institute for Solar Energy Systems
RADIANCE Photon Map page: www.ise.fhg.de/radiance/photon-map

END OF LINE. (MCP)