/***********************************************************
             CSC418, SPRING 2005
 
                 light_source.cpp
                 author: Jack Wang

		implements light_source.h

***********************************************************/

#include <cmath>
#include "light_source.h"

void PointLight::shade( Ray3D& ray ) {
	// TODO: implement this function to fill in values for ray.col 
	// using phong shading.  Make sure your vectors are normalized, and
	// clamp colour values to 1.0.
}