The intersection of two identical curves

[ArtOfOmission]

  var cv1 = new Bezier(48, 84, 100, 187, 166, 37);
  var cv2 = new Bezier(48, 84, 100, 187, 166, 37);

  var icts = cv1.intersects(cv2);
  console.log(icts.length);

These are the same two curves(or one is part of the another), the result has more than 700 intersections. In my project, there should be no intersection, I don't know how to handle it.

[Pomax]

there should be no intersection

There should be infinitely many intersections because literally every point on the first curve is on the second curve as well. You catch this by first checking whether the coordinates are the exact same, before running an intersection call.

[ArtOfOmission]

You are right. Thanks for your reply. I spent a lot of time searching. I found a piece of literature that answered my question The_Study_of_Coincidence_or_Partial_Coincidence_Condition_for_Two_Rational_Cubic_Bezier_Curves