freesewing/packages/examples/src/path_shiftfractionalong.js

export default part => {
  // prettier-ignore
  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);

  paths.example = new Path()
    .move(points.A)
    .line(points.B)
    .curve(points.BCp2, points.CCp1, points.C);

  points.X1 = paths.example
    .shiftFractionAlong(0.2)
    .attr("data-text", "msg_20")
    .attr("data-text-class", "center")
    .attr("data-text-lineheight", 6);
  points.X2 = paths.example
    .shiftFractionAlong(0.9)
    .attr("data-text", "msg_90")
    .attr("data-text-class", "center")
    .attr("data-text-lineheight", 6);

  snippets.Xl = new Snippet("x", points.X1);
  snippets.X2 = new Snippet("x", points.X2);

  return part;
};