Path.intersectsY()

The Path.intersectsY() method returns the Point object(s) where the path intersects with a given Y-value.

warning

This method can sometimes fail to find intersections in some curves due to a limitation in an underlying Bézier library. Please see Bug #3367 for more information.

Signature

array|false path.intersectsY(float y)

Example

Preview

Code

({ Point, points, Path, paths, snippets, Snippet, getId,  part }) => {

    points.A = new Point(55, 40)
    points.B = new Point(10, 70)
    points.BCp2 = new Point(40, 20)
    points.C = new Point(90, 60)
    points.CCp1 = new Point(50, -30)
    points.D = new Point(50, 80)
    points.DCp1 = new Point(140, 50)

    points.top = new Point(10, 58)
    points.bot = new Point(130, 58)

    paths.line = new Path()
    .move(points.top)
    .line(points.bot)
    .attr("class", "lining dashed")

  paths.demo = 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.demo.intersectsY(58)) {
    snippets[getId()] = new Snippet("notch", p)
  }

  return part
}

X-Ray

Example of the Path.intersectsY() method