FreeCAD

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# Examples to generate trajectories out of shapes
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import FreeCADGui as Gui
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# getting selected edges from the selection and sort them
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count = 0
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FirstPos1 = None
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FirstPos2 = None
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LastPos2 = None
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SortedEdgeList = []
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for so in Gui.Selection.getSelectionEx():
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    for edge in obj.SubObjects:
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        if edge.Type != "Part::TopoShape":
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            continue
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        pos1 = edge.valueAt(0)
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        pos2 = edge.valueAt(edge.Length)
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        print(pos1, pos2)
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        if count == 0:  # first edge
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            FirstPos1 = pos1
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            FirstPos2 = pos2
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        elif count == 1:  # second edge
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            continue
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        else:  # the rest
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            SortedEdgeList.append((pos1, pos2, edge))
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