Object Oriented Programming With 3D Tile

// Object Oriented example in 3D
 
Tile t1;
 
void setup() {
  size (300, 300, P3D);
  noStroke();
 
  t1 = new Tile(50, 50, 40);
}
 
void draw() {
  background(80);
  fill(200);
  t1.checkMouse();
  t1.animate();
  t1.display();
}
 
class Tile {
  int x, y, wh;
  float thetaY, rotationSpeed;
 
  Tile(int centerX, int centerY, int squareSize) {
    thetaY = 0.0;
    rotationSpeed = 0.0;
    x = centerX;
    y = centerY;
    wh = squareSize;
  }
 
  void animate() {
    thetaY += rotationSpeed;
  }
 
  void display() {
    translate(x,y);
    rotateY(thetaY);
    rectMode(CENTER);
    rect(0,0, wh, wh);
  }
 
  void checkMouse() {
    // Is the mouse within my original region?
    int h = wh / 2; // h = halfsize
    if (((mouseX > x-h) && (mouseX < x+h)) && ((mouseY > y-h) && (mouseY < y+h))) {
      // increase the rotationSpeed
      rotationSpeed += 0.02;
    } else {
      // if not, decrease the rotationSpeed (less than the increase)
      rotationSpeed -= 0.01;
      // but not make the rotationSpeed less than 0
      if (rotationSpeed < 0) {
        rotationSpeed = 0;
      }
    }
  }
}