public class Rain
{
  PVector position, pposition, speed;
  float col;

  public Rain()
  {
    position = new PVector(random(0, width), 0);
    pposition = position;
    speed = new PVector(0, 0);
    col = random(30, 100);
  }

  void draw()
  {
    stroke(100, col);
    strokeWeight(2);
    line(position.x, position.y, pposition.x, pposition.y);
    //ellipse(position.x,position.y,5,5);
  }

  void calculate()
  {
    pposition = new PVector(position.x, position.y);
    gravity();
  }

  void gravity()
  {
    speed.y += .2  + (0.1 * int((height - ((cloud1.y + cloud2.y + cloud3.y + cloud4.y + cloud5.y)/5)) / 50));
    speed.x += .01;
    position.add(speed);
  }
}