[Radiance-general] Angular selectivity of blinds

[furry at ihug.com.au]

Does anyone have any suggestions which would be helpful for modelling blinds 
which let different amounts of light through at different angles of incident 
light, an obvious example of this being a Venetian blind.  The particular case 
I am interested in is a woven wire blind where the light incident normal to the 
blind would be transmitted better than at an angle.

At the moment, I am modelling using BRTDfunc with a tranmittance value 
appropriate to the light at normal incidence, however I assume this is no 
different really to modelling glass with the same transmittance value.

Thanks,
Richard
Clibborn