void setupLights(){

  ambient(0, 0, 0);
  specular(0,255,0);

  emissive(0, 0, 0);
  shininess(1); 
  
  ambientLight(0,0,0);
  directionalLight(0,0,0,0,0,0);

}

void renderLights() {
  
  ///*  
  lightFalloff(1, 0.0, 0.0);
  pointLight(255, 255, 255, -500, -250, 150);
  pointLight(255, 255, 255, 0, -250, 150);
  pointLight(255, 255, 255, 500, -250, 150);
  //*/
  
  //println("x light: "+sineWave(500));
  
  /*
  
  lightFalloff(3, 0.0, 0.0);
  pointLight(255, 222, 233, sineWave(50000)*500, -100, 100);
  
  pointLight(233, 255, 222, sineWave(1875)*1000, -200, 100);
  pointLight(233, 222, 255, sineWave(3750)*1000, -200, 100);
  pointLight(222, 233, 255, sineWave(5625)*1000, -200, 100);
  pointLight(255, 233, 222, sineWave(9375)*1000, -200, 100);
  //*/

}