func RectWH(x, y, w, h float32) Rectangle {
	return Rectangle{
		Min: Vec2{x, y},
		Max: Vec2{x + w, y + h},
	}
}
func RectWH(x, y, w, h float32) Rectangle {
	return Rectangle{
		Min: Vec2{x, y},
		Max: Vec2{x + w, y + h},
	}
}
func RectWH ( x , y , w , h float32 ) Rectangle { return Rectangle { Min : Vec2 { x , y } , Max : Vec2 { x + w , y + h } , } }
// RectWH returns a rectangle whose origin is Vec2{x,y}, w and h are its width
// and height.
RectWH returns a rectangle whose origin is Vec2 { x y } w and h are its width and height .