Open
Description
A recent feature implemented in Pull 1636 allows cropping the orthophoto in the viewer. This is done by drawing individual line segments to create a bounding polygon.
I suggest that when drawing lines, holding the shift key snaps the currently-being-drawn-segment to the nearest 45° (or 90°) angle.
For example, when drawing a rectangle, it would be advantageous to be able to make the sides vertical and horizontal, rather than roughly horizontal, based on my ability to estimate it.
This mirrors functionality in image editing and drawing tools (ex: GIMP and MS Paint).