Lights 2

This example is for Processing version 1.0+. If you have a previous version, use the examples included with your software. If you see any errors or have comments, please let us know.

Directional.

Move the mouse the change the direction of the light. Directional light comes from one direction and is stronger when hitting a surface squarely and weaker if it hits at a a gentle angle. After hitting a surface, a directional lights scatters in all directions.


void setup() {
  size(640, 360, P3D);
  noStroke();
  fill(204);
}

void draw() {
  noStroke(); 
  background(0); 
  float dirY = (mouseY / float(height) - 0.5) * 2;
  float dirX = (mouseX / float(width) - 0.5) * 2;
  directionalLight(204, 204, 204, -dirX, -dirY, -1); 
  translate(width/2 - 100, height/2, 0); 
  sphere(80); 
  translate(200, 0, 0); 
  sphere(80); 
}