Documentation

This is machine translation

Translated by Microsoft
Mouse over text to see original. Click the button below to return to the English verison of the page.

specular

Calculate specular reflectance

Syntax

R = specular(Nx,Ny,Nz,S,V)

Description

R = specular(Nx,Ny,Nz,S,V) returns the reflectance of a surface with normal vector components [Nx,Ny,Nz]. S and V specify the direction to the light source and to the viewer, respectively. You can specify these directions as three vectors[x,y,z] or two vectors [Theta Phi (in spherical coordinates).

The specular highlight is strongest when the normal vector is in the direction of (S+V)/2 where S is the source direction, and V is the view direction.

The surface spread exponent can be specified by including a sixth argument as in specular(Nx,Ny,Nz,S,V,spread).

Was this topic helpful?