processing box

void setup() {

  size(200, 200, P3D);

  noFill();

  smooth();

}

void draw() {

  background(0);

  

  translate(width/2, height/2, -(width/2));

  rotateY(map(mouseX, 0, width, -PI, PI));

  stroke(100);

  box(150);

  

  rotateX(map(mouseY, 0, height, -PI, PI));

  stroke(150);

  box(75);

}