public IntBounds(int x, int y, int w, int h) {
LeftTop = new IntPoint(x, y);
RightBottom = new IntPoint(x + w, y + h);
}
public bool Contains(IntPoint p) {
return this.LeftTop.X <= p.X && LeftTop.Y <= p.Y && RightBottom.X >= p.X && RightBottom.Y > p.Y;
}
public IntBounds(IntPoint lt, IntPoint rb) {
LeftTop = lt;
RightBottom = rb;
}