Close loop Bézier

Dec 2016
53
3
United States
Is this article saying that all I need to do to close my curve is overlap 3 of the nodes?
B-spline Curves: Closed Curves

This is the code I am writing for a random Bézier curve.
https://jsfiddle.net/bt7jphx7/
I want to loop my curve in 3Dimensions. I just need to understand the math to loop the curve.


This article is saying "wrap knots or wrap control points" What does it mean by wrap?
 
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