fromAnchor
fun fromAnchor(anchorUV: Vector2, anchor: Vector2, width: Double, height: Double = width): Rectangle(source)
Creates a new Rectangle by specifying the rectangle's normalized anchorUV position, the target anchor position, its width and height.
Set the anchorUV to Vector2(0.0, 0.0) to place the top-left corner of the rectangle or Vector2(1.0, 0.5) to place the center of its right edge, for instance.