[Radiance-general] Radiosity method implementation on Radiance

[Germán Molina Larrain]

Dear everyone,

I am thinking on implementing a hybrid methodology between Radiosity method
and Ray-tracing, for accelerating some calculations (by giving up accuracy,
maybe)

As everyone here knows, Radiance ray-tracing works awesome; however, I
could not find anything related to any Radiosity implementation.

I think I can make algorythms to subdivide polygons into meshes, however,
what I do not know how to do is:

*1.- Calculation of View (Form) Factors:* I guess a straitforward way is to
calculate them by randomly sending rays from one surface to the rest of
them, but I do not know how to do that (or use octrees). (k/N would be the
view factor Fij... where k is the number of rays that falled into j from i,
and N the total number of rays sent)

*2.- Render:* After I have the Radiosities of every polygon. How can I make
a render? I guess I can use *vwrays *somehow, but I am not sure how to
check which polygon am I "seeing", in order to use the calculated values.

Any information is useful,

THANKS

German

PS: I know people here might like Ray-tracing more than anything else, but
still... This implementation might help
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