I am using the 3D glyph to orient and position a plane. It would be interesting to me to be able to add a label on the red axis, for instance (see figure, where a “P” is always visible along the red axis).
I have tried using a MRML markup fiducial and updating its position according to the transform matrix of the plane node. But it would be cleaner to implement something at a lower level (in vtk).
Could you please advise me on this topic if you have already done similar things?