void setup(){
  size(800,600);
  rectMode(CENTER_DIAMETER);
  noStroke();
}
void loop(){
  background(0);
  int limite = 100;
  translate(400,300,0);
  //rotateY(HALF_PI/2);
  rotateY(linea(mouseX,0,width,0,TWO_PI));
  rotateX(linea(mouseY,0,height,TWO_PI,0));

  for(int i=0;i<limite;i++){
    fill(0,0,linea(i,0,limite,100,255),130);
    rect(10,100,i * 3,100);
    rotateX(PI / limite * 2);
    //translate(0,0,-500);
  }
}
float linea(float x,float x1, float x2, float y1, float y2){
  return (x-x1)/(x2-x1)*(y2-y1)+y1;
}