/* I took this code from an example at http://www.opengl.org/sdk/docs/tutorials/ClockworkCoders/lighting.php */

varying vec3 N;
varying vec3 v;

void main(void)
{

   v = vec3(gl_ModelViewMatrix * gl_Vertex);       
   N = normalize(gl_NormalMatrix * gl_Normal);

   gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;


}