srecord Rect(int x, int y, int w, int h) is WidthAndHeight {

  *(Rectangle r) {

    x = r.x;

    y = r.y;

    w = r.width;

    h = r.height;

  }

  *(Pt p, int *w, int *h) { x = p.x; y = p.y; }

  *(Rect r) { x = r.x; y = r.y; w = r.w; h = r.h; }

  final Rectangle getRectangle() {

    ret new Rectangle(x, y, w, h);

  }

  public S toString() {

    ret x + "," + y + " / " + w + "," + h;

  }

  final int x1() { ret x; }

  final int y1() { ret y; }

  final int x2() { ret x + w; }

  final int y2() { ret y + h; }

  final bool contains(Pt p) {

    ret contains(p.x, p.y);

  }

  final bool contains(int _x, int _y) {

    ret _x >= x && _y >= y && _x < x+w && _y < y+h;

  }

  final bool contains(Rectangle r) {

    ret rectContains(this, r);

  }

  final bool empty() { ret w <= 0 || h <= 0; }

  final public int getWidth() { ret w; }

  final public int getHeight() { ret h; }

  final public int area() { ret w*h; }

  final public int x() { ret x; }

  final public int y() { ret y; }

  WidthAndHeight widthAndHeight() { ret main widthAndHeight(w, h); }

}