OpenSCAD, 
The linear_extrude() module got an additional parameter "v" defining the direction of the extrusion (must be in positive Z direction).
linear_extrude(10 * sqrt(3)/2, v = [1, 1, 1], scale = 0.5) square(10);
Thanks @gsohler for the new feature https://github.com/openscad/openscad/pull/5080
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