public class Line extends Particle
{
  private float theta;
  private float rate;
  
  /**
   * Parameterized constructor expects values for position, velocity, acceleration,
   * and particle size (in that order).
   */
  public Line (Vector2D position, Vector2D velocity, Vector2D acceleration, float pWidth, float pHeight)
  {
    super(position, velocity, acceleration, pWidth, pHeight);
    theta = 0;
    rate = random(-0.1, 0.1);
  }
  
  /**
   * Method for rendering the line:
   */
  public void render ()
  {
    smooth();

    stroke(150, 180, 256, 200);

    pushMatrix();
    translate(position.getX(), position.getY());
    rotate(theta);
    line(-pWidth/2, 0, pWidth/2, 0);
    theta += rate;
    popMatrix();
    noStroke();
    
  } 
  
  
}