[Radiance-general] coffers, glows & illums

[Rob Guglielmetti]

Fitzsimmons, Rob wrote:

> Hey Rob,
> I'm amazed you're getting those quality renders  in only 12 minutes?!
> (aside from the coffer bug) they look great.
> Is the speed increase due to using mkillum?

Hi Rob,

It's true!!  Even less than 12 minutes.  Yes, it's because of mkillum. 
If you think of mkillum as a tool to generate an "ies file" for a 
complex bit of geometry, it makes a lot of sense (to me).  You move the 
coffer's contribution to the room illuminance from the indirect 
calculation to the direct one, which is much faster.

So now I have a great looking room, but a bad-looking coffer.  The illum 
bug that Georg & Greg have been discussing also seems to have shown up 
for a visit in my current renderings.  =8-\

Before I can use Greg's tip about excluding the coffer materials, I need 
to learn a bit about coming up with a valid -av number.  But, to be 
honest, this already gives a good impression of the space.  The whole 
point of the rendering was to see how bad the glare would be from the 
coffers (answer: bad), which can be judged just fine from the direct 
component of the glows.

That said, I would still like to get the coffers looking better. I will 
have to revisit this problem when I have time...

----

      Rob Guglielmetti

e. rpg@rumblestrip.org
w. www.rumblestrip.org