MyObject b = new MyObject(40); //create an object
void setup(){
  size(500,500, P3D); //setup the screen
  camera(-100,100,-100,0,0,0,0,0,1); //get a viewpoint
}
void draw(){
  background(255);
  pointLight(255, 255, 255, -200,300,-400);
  b.draw3(); //draw the object
}