getClip method
Returns a description of the clip given that the render object being clipped is of the given size.
Implementation
@override
Path getClip(Size size) {
return Path()
..lineTo(0, 0)
..lineTo(size.width * 2 / 3, 0)
..lineTo(size.width * 1 / 3, size.height)
..lineTo(0, size.height);
}