I would like to have a length property in the list of line entity properties (in the property editor). I want it to be editable so that if I change the length the endpoint would change to accommodate the line of the specified length in the same direction as before -- startpoint being fixed (the startpoint and endpoint can even be greyed/locked out when length is being edited); if I change the endpoint or the startpoint the length would change accordingly.
Furthermore, to have more flexibility given the above options it would be nice to be able to switch start- and end-points with a click of a button.
Thank you for consideration!
Mike.
