[Radiance-general] Overture calculation

[Lars O. Grobe]

> So, I need an overture calculation. I think the easiest way to ensure a
> fairly complete ambient file is to generate small images. I could do six
> orthographics at maybe 200 pixels long-ways, or a trace a more
> comprehensive grid, or ... Any suggestions?

In general, it is the best to use the same view settings for the 
ouverture calculation as you will use later for the renderings. You want 
a refined ambient cache for areas which are actually of importance for 
your final renderings, so it does not make sense to first create 
detailes ambient data for the whole scene, if you want to render only 
one image later. If you are targeting at creating an animation, just 
skip frames and render a low-res of every 10th or so.

Cheers, Lars.