CSCE 4230  Homework #5


    Due date:  Tuesday, March 31, 2009


    Given unit vectors L (the direction from a surface point
    P to a point light source) and N (the unit normal to the
    surface at P), let R be the direction of specular reflection
    of the point light at P:  R is a unit vector that lies in
    the plane of L and N such that the angle of reflection is
    equal to the angle of incidence.

    Find an expression for R in terms of N and L.