/**
 * 2D vector class by subpixel (http://subpixels.com)
 * <p>Last modified: 2009-01-09 10:47</p>
 */

class Vector2D
{
  public float x;
  public float y;
  
  public Vector2D()
  {
    x = 0;
    y = 0;
  }
  
  public Vector2D(Vector2D v)
  {
    x = v.x;
    y = v.y;
  }
  
  public Vector2D(float x, float y)
  {
    this.x = x;
    this.y = y;
  }
  
  public Vector2D add(Vector2D other)
  {
    return new Vector2D(this.x + other.x, this.y + other.y);
  }
  
  public String str()
  {
    return "(" + x + "," + y + ")";
  }
}