Vertical points
Height <=> Depth reversal
$point = VerticalPoint::create(...);
$newPoint = $point->heightDepthReversal(
Vertical $to
); // returns a new VerticalPoint
Vertical Offset
$point = VerticalPoint::create(...);
$newPoint = $point->verticalOffset(
Vertical $to,
Length $verticalOffset
); // returns a new VerticalPoint