[cad-linux] Re: Fwd: AECCafe News September 13

> I can produce Renderman files, but as an Architect I'm much more =
> interested in Radiance, for it actually calculates the light and global =
> luminosity rather than 'faking' it.
>
BMRT is a true raytracer.  it does not fake it the way that renderman does 
even though it uses the same language.  in fact Pixar uses(they used to 
employ it's creator)BMRT when more accurate rending is required.  search for 
bmrt & bugslife.

> Almost all 3D rendering engines were developed for animation and games. =
> This is evident in the fact that just now are they getting around to =
> adding radiosity and global illumination and IGS lights in VIZ, =
> Truespace, and other commonly used commercial packages. Accurately =
> modeling light is insane for animation, for it's way to costly in =
> computational time. So most rendering engines have been focused on speed =
> and good images and 'faking' light rather than true-to-life light =
> computation.
>
> As a architect, I want to *know* what it's really going to look like. =
> Radiance, as it was developed for day lighting studies, will actually =
> report back to me the number of lumens on a surface, use IGS lights, and =
> give me design feedback in the same way that parametric mechanical CAD =
> tools do in stress testing and mold formation problems. The by-product =
> is that it also produces excellent architectural renderings. :)

sounds like i need to play with it some.

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