PabloMansanet

Ohhh I see. I'd be partial to hard-limit this with separate coordinate types, yes. Taking `GlobalCoords` or `LocalCoords` would have made this a bit clearer probably :)

Success!  Thanks for the pointers :). I'll make an intermediate PR with the missing affine transforms for the planes, and the geometry for the gizmo (though it can't yet...

Note: OpenSCAD style, not a full grid.