[Radiance-general] Direct, diffuse and reflected light

[giulio]

I would simply do so:
A)   -ab 0 and sun -> direct from sun only
B)   -ab 1 and no sun-> direct from sky only


C)   -ab n>1 and no sky -> subtract case A, is reflected after  
sunlight only
D)   -ab n>1 and no sun -> subtract case B, is reflected after sky only


performing the difference of the various analyses you can get the  
various values.

alternatively you can use rtcontrib and get the contribution of  
illuminance coming from a particular surface modifier...
sunlight
skylight
walls
....
It is not that difficult.

Also try to see if there is something about this here:
http://web.mac.com/geotrupes/iWeb/Site/Tutorials.html
I think there should be a mini tutorial with some tricks...
hope it helps

ciao
G.


On 17 Sep 2008, at 14:37, Anne Iversen wrote:

>
> I have been working through the tutorials of A. Jacobs and some of  
> the tutorials in Rendering with Radiance, but I have not come  
> across a text describing how to obtain the different contributions  
> to the total illuminance on a surface. I would like to hear how I  
> can obtain the direct, diffuse and reflected component of the  
> illuminance? Do I have to find the parameters in the source code,  
> or is there someone who has made it easy for me and created a  
> command for this (my fingers are crossed)?
>
> In advance – I would like to say thank you for any respond to this  
> query…
>
> Br
> Anne Iversen
>
>
> _______________________________________________
> Radiance-general mailing list
> Radiance-general at radiance-online.org
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