class CircleButton {
  int x, y;
  int diameter;
  color baseColor;
  color overColor;
  color pressColor;
  boolean over = false;
  boolean pressed = false;
  
  CircleButton(int _x, int _y, int _d, color bc, color oc, color pc) {
    x = _x;
    y = _y;
    diameter = _d;
    baseColor = bc;
    overColor = oc;
    pressColor = pc;
  }
  
  void update (int mx, int my) {
    if (dist(mx, my, x, y) < diameter * 0.5) over = true;
    else over = false;
  }
  
  boolean press() {
    if (over == true) {
      pressed = true;
      return true;
    }
    else return false;
  }
  
  void release() {
    pressed = false;
  }
  
  void display() {
    if (pressed == true) fill(pressColor);
    else if (over == true) fill(overColor);
    else fill(baseColor);
    
    ellipse(x, y, diameter, diameter);
  }
  
}