[Radiance-general] Re: BRTDfunc for dichroic film? (was mixfunc for dichroic film?)

[Greg Ward]

Hi John,

Judging from what you've said and the spec. sheet for dichroic film, 
the BRTDfunc seems to be your best bet.  You can vary reflectance with 
angle and wavelength (RGB color) using any function or data you have.  
Since we're just talking about the mirror and transmitted directions, 
the BRTDfunc gives you complete control and should deliver accurate and 
efficient simulations.

-Greg