[Radiance-general] partly covered source

[Jan Wienold]

Hi all,

I just encountered a strange different behavior between rtrace and rpict:
If the sun ( using "source") is  covered in large parts (in that case 
more than half) I can still "see" the uncovered parts in the image 
(=>this is what I expect). In case I calculate at the same point and in 
the same direction the illuminance with rtrace -I, I get zero 
contribution.  Is just the center of the source description tested in 
that case? Any solution for this for rtrace?
I just look for the sun, no sky description and use only direct 
calculation (-ab 0) .

Thanks,

Jan



-- 
Dr.-Ing. Jan Wienold
Head of Team Passive Systems and Daylighting
Fraunhofer-Institut für Solare Energiesysteme
Thermal Systems and Buildings
Heidenhofstr. 2, 79110 Freiburg, Germany
Phone: +49(0)761 4588 5133 Fax:+49(0)761 4588 9133
jan.wienold at ise.fraunhofer.de
http://www.ise.fraunhofer.de

In office:
Mo,Tue: 8:30-18:00
We,Thu: 8:30-16:00
Fr:  8:30-15:30