[Radiance-general] window glass modeling

[Milan Cakanovic]

Hi Lars,

> As Marija wrote, you can also just put a grid of sensor points into the cene.
> The background of my proposal was that a rpict-generated image may be useful
> to track problems in the scene, even though the irradiance values you get
> would certainly be affected by the geometry added as a working plane (which
> is not necessary when using a grid as rtrace input). So if you take this
> approach, do not compare the results of a rendered image including work plane
> geometry to sensor point illuminances rendered without such geometry - they
> must be different...

A lot of useful advice.

> As long as the blinds are outside the glass, everything is fine and you can
> use the glass surface as an mkillum input. If you ever should have to render
> a model with blinds on the inner side of the window, it is important to
> remember that the mkillum pane has to be inside the complicated geometry to
> precalculte.

I am interested in only for exterior venetian blinds. In that case, I can use
the glass surface as an mkillum input, and no need for any intervention on
blinds (I leave them as they are). Is this OK?

Cheers,  Milan