Perpendicular vectors from curves


Maybe you have some ideas.

There is a plan of curves, that changes in Z direction in some segments. But there are corner points that are always here, and I want to create two vectors from the same point concerning the curves that are near those points. As you see green arrows. In other levels those vectors can be longer or shorter like red arrows. P.S only those that ar 90 degrees are ok for me, but this part is solved already.

Maybe you had simmilar objective, to place something in corners and have different vector direction?

See attached. (122.1 KB)

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