freesewing/packages/examples/src/utils_lineintersectscurve.js

export default part => {
  let {
    Point,
    points,
    Path,
    paths,
    Snippet,
    snippets,
    utils
  } = part.shorthand();

  points.A = new Point(10, 10);
  points.Acp = new Point(310, 40);
  points.B = new Point(110, 70);
  points.Bcp = new Point(-210, 40);
  points.E = new Point(20, -5);
  points.D = new Point(100, 85);
  paths.curve = new Path()
    .move(points.A)
    .curve(points.Acp, points.Bcp, points.B);
  paths.line = new Path().move(points.E).line(points.D);

  for (let p of utils.lineIntersectsCurve(
    points.D,
    points.E,
    points.A,
    points.Acp,
    points.Bcp,
    points.B
  )) {
    snippets[part.getId()] = new Snippet("notch", p);
  }

  return part;
};