DielectricBSDF.cpp File Reference

Wavelength-dependent, thin dielectric BSDF defined at a single point on a surface in 3-space. The opacity input controls the transmittance versus reflectance of different wavelengths. A pure specular mirror may be obtained by creating a dielectric BSDF with zero opacity. Conversely, a purely transparent surface may be obtained by creating a dielectric with full opacity. Note that a completely transparent surface will still reflect some light (in proportion to Fresnel's Laws) because refraction is undefined past a critical angle when light is traveling between a lighter and denser medium. When this happens, some light is reflected regardless of the opacity parameter, and this is typically known as total internal reflection. More...

#include "DielectricBSDF.h"
#include <IndexOfRefraction.h>
#include <Material.h>
#include <Fresnel.h>
#include <Random.h>

Go to the source code of this file.

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Detailed Description

Wavelength-dependent, thin dielectric BSDF defined at a single point on a surface in 3-space. The opacity input controls the transmittance versus reflectance of different wavelengths. A pure specular mirror may be obtained by creating a dielectric BSDF with zero opacity. Conversely, a purely transparent surface may be obtained by creating a dielectric with full opacity. Note that a completely transparent surface will still reflect some light (in proportion to Fresnel's Laws) because refraction is undefined past a critical angle when light is traveling between a lighter and denser medium. When this happens, some light is reflected regardless of the opacity parameter, and this is typically known as total internal reflection.

Author:

Travis Fischer (fisch0920@gmail.com)

Matthew Jacobs (jacobs.mh@gmail.com)

Date:

Fall 2008

Parameters:

	opacity	- SpectralSampleSet which specifies the transmittance of the material
	ks	- SpectralSampleSet which scales / attenuates the overall reflectance of the material (specular albedo)

Definition in file DielectricBSDF.cpp.