/** * Reflection  * by Simon Greenwold.  *  * Vary the specular reflection component of a material * with the horizontal position of the mouse.  */void setup() {  size(640, 360, P3D);  noStroke();  colorMode(RGB, 1);  fill(0.4);}void draw() {  background(0);  translate(width / 2, height / 2);  // Set the specular color of lights that follow  lightSpecular(1, 1, 1);  directionalLight(0.8, 0.8, 0.8, 0, 0, -1);  float s = mouseX / float(width);  specular(s, s, s);  sphere(120);}