If the facade is vertical and you have 3d coordinates of two points on the facade (e.g. A and B) in the desired reference system, it is not necessary that the two points have the same height.
I create three imaginary points:
O has Long and Lat equal to A and arbitrary Alt
X has Long and Lat equal to B and Alt like O
Y has Long and Lat equal to O and Alt greater than O
So the three points are orthogonal to each other.
Having the real coordinates of O, it is easy to give the right shift to the orthophoto, but it would be better if this was inserted directly in Metashape
Yes, you understand it correctly. And yes, it would be quicker if something of it would be implemented in Metashape.
