For example, when implementing a GUI which lets users to order members in a placed hierarchy on an axis, one needs to find out which member can be moved up or down, and also needs to move the whole descendants along with the member itself.
We need to make this kind of operations easier by adding appropriate helper methods in the PlaceMembersOnAxes transform.
Provide convenient methods for ordering members.
For example, when implementing a GUI which lets users to order members in a placed hierarchy on an axis, one needs to find out which member can be moved up or down, and also needs to move the whole descendants along with the member itself.
We need to make this kind of operations easier by adding appropriate helper methods in the PlaceMembersOnAxes transform.