In Blender, is there any way of automatically aligning something to the global axis, automatically snapping it to it, or restricting movement to it?
I'm looking for something that's the equivalent of the orthogonal mode in Autocad.
For example, I'd like to grab the rotation handle on the image below and constrain its movement in such as way that it would automatically snap to 0 degrees on the Z axis, so that it was facing straight up. And then be able to grab the vertex below it and have it snap to the same axis.