[Radiance-general] Luminaire octree

[Zack Rogers]

Hello,

I apologize if this has been asked and answered -- I couldn't find 
anything searching, though I wasn't sure the best keywords to use.

I am trying to create a luminaire octree, which I will then use with 
replmarks to place about 20 of these in a larger radiance model.  I am 
modeling a psuedo-indirect exterior fixture that consists of a 19' high 
pole with essentially 4 arms, each with a lamp aimed straight up at a 
reflecting panel.  I have an IES file that represents one arm of this 
fixture.  I have successfully modeled the fixture with the 4 arms and am 
now wanting to make an octree out of it, including the application of 
the 4 ies distributions ( more technically the output from ies2rad -- I 
have a brightdata primitive, referring to a dat file describing the 
light distribution, that gets applied to an illum surface, then applied 
to a box of polygons).  However, when I do this (both frozen and 
unfrozen), I do not see any light sources.  Essentially, it seems the 
brightdata primitive does not get preserved in the octree.  My resulting 
octree has all the physically geometry I wanted, but the glow surface 
(used to just illuminate fixture geometry) and the IES distribution 
applied to box of illum polygons does not show up.

When I try to separate the geometry with the IES distribution I also 
have trouble.  I have an octree representing luminaire geometry and then 
I separately add the 4 distributions (which do overlap the geometry 
bounding cube) I get some light but definitely not the same distribution 
of light I'm expecting and began with.

Any help is appreciated. I am hoping to find a more elegant solution 
than just physically modeling (not replmarking) these 20 fixtures and 
adding 80 markers for the distributions.

Zack

PS. I can e-mail a rendering if it helps explain the situation (can't 
post to a website right now)

--
Zack Rogers
Engineer / Daylighting Designer
Architectural Energy Corporation
2540 Frontier Avenue, Suite 201
Boulder, CO 80301 USA

tel (303)444-4149 ext.235
fax (303)444-4304
http://www.archenergy.com