just use the latest 0.19 dev version
We are now using the right trigonometric functions, such that all combinations of positive/negative are handled: https://github.com/FreeCAD/FreeCAD/pull/2878. No complicated distinction of cases necessary. The only corner case is invalid IFC with direction ratios 0,0 for true north, where the direction is acutally indeterminate, but even that would not make the application crash.hlg wrote: ↑Tue Jan 07, 2020 7:03 pmI think the fix could be improved: https://github.com/FreeCAD/FreeCAD/comm ... t-36696448. Shall I make a pull request?
works here on