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Find Special Point On Curve


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I have curve from external Software and I must cut it at very special position. Is there a method how I can find point that is 90 degrees to given plane? I did add Tangent to curve with polyframe SOP but how to find special position?

Thank you in advance!

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well, there are many different ways of doing it. the crude one is to just recursively sample the curve and search for the point with the smallest deviation angle. this should what works for any case. the more elegant method however, would be to use a polynomial and solve it for the position on the curve at which the angle deviation is 0.




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