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How does "face" parameter in evEdgeTangentLine work
I wrote a script which divides a curve into single sections and returns the point vectors next to each other. I try to transform a body along the curve.
Now I ran into the problem that evEdgeTangentLine lists my vectors from the wrong side. As I've understood this, the face parameter is used to define the direction. But I can't quite understand how to use it. And the documentation description about this parameter is a little riddle in my opinion.
If anyone could give me a hint, I'd be very thankful!