Dear Radiance community,
I am curious to know if it is possible to model and simulate a material such as this “HOHOFILM Rainbow Effect Iridescent Window Film” in Radiance. (Apologies for the Amazon link below. It is included only as a reference to the material).
The color of light transmitted changes in response to the angle of incident light.
Could a BSDF be generated that would reproduce this behavior?
And if so, could such a BSDF be applied in emerging multi-spectral lighting approaches which utilize Radiance (e.g. ALFA) to produce detailed spectral data similar to the physical spectrometer measurements i have included in the link below?
I am including some documentation of physical testing i have been doing using a physical daylight model, an automated tilt table / heliodon device, HDR imaging and a spectrometer to illustrate the effect for context.
Hope my general question makes sense.