diffuse - Calculate diffuse reflectance
Syntax
R = diffuse(Nx,Ny,Nz,S)
Description
R = diffuse(Nx,Ny,Nz,S) returns the reflectance
of a surface with normal vector components [Nx,Ny,Nz].
S specifies the direction to the light source. You can
specify these directions as three vectors[x,y,z] or two
vectors [Theta Phi (in spherical coordinates).
Lambert's Law: R = cos(PSI) where PSI is
the angle between the surface normal and light source.
See Also
specular, surfnorm, surfl
Lighting as a Visualization Tool
 | diff | | dir |  |
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