freesewing/packages/examples/src/path_intersects.js

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

  points.A = new Point(45, 60)
  points.B = new Point(10, 30)
  points.BCp2 = new Point(40, 20)
  points.C = new Point(90, 30)
  points.CCp1 = new Point(50, -30)
  points.D = new Point(50, 130)
  points.DCp1 = new Point(150, 30)

  points._A = new Point(55, 40)
  points._B = new Point(0, 55)
  points._BCp2 = new Point(40, -20)
  points._C = new Point(90, 40)
  points._CCp1 = new Point(50, -30)
  points._D = new Point(40, 120)
  points._DCp1 = new Point(180, 40)

  paths.demo1 = new Path()
    .move(points.A)
    .line(points.B)
    .curve(points.BCp2, points.CCp1, points.C)
    .curve(points.DCp1, points.DCp1, points.D)
  paths.demo2 = new Path()
    .move(points._A)
    .line(points._B)
    .curve(points._BCp2, points._CCp1, points._C)
    .curve(points._DCp1, points._DCp1, points._D)

  for (let p of paths.demo1.intersects(paths.demo2)) {
    snippets[part.getId()] = new Snippet('notch', p)
  }

  return part
}