class Ring{
  float x, y; //x-coordinate, y-coordinate//
  float r, g, b;//ring color//
  float startDia;//diameter before mouse pressed//
  float endDia;//diameter after mouse pressed//
  float initialDia;
  float initialX;
  float initialY;
  //  float flagXleft;
  //  float flagXright;
  //  float flagYtop;
  //  float flagYbtm;//

  Ring(int xpos, int ypos, int colorRed, int colorGreen, int colorBlue, int rest, int click){
    x = xpos;
    y = ypos;
    r = colorRed;
    g = colorGreen;
    b = colorBlue;
    startDia = rest;
    endDia = click;
    initialDia = rest;
    initialX = xpos;
    initialY = ypos;
  }


  float stiffness = 0.7;
  float damping = 0.0;
  float velocity = 1.0;
  float targetY = y+10 ;


  void display(){

    float force = stiffness * (targetY - startDia);
    velocity = damping * (velocity + force);
    startDia += velocity;

    noFill();
    strokeWeight(5);
    stroke(r, g, b);

    ellipse(x, y, startDia, startDia);

    if(mousePressed == true){
      startDia = endDia;
      ellipseMode(RADIUS);
    }
    
    else{
      startDia = initialDia;
      ellipseMode(CENTER);
    }


  }
}