export default function(part) {
  let {
    paperless,
    sa,
    store,
    complete,
    points,
    options,
    macro,
    Point,
    paths,
    Path,
    measurements
  } = part.shorthand();

  let scale = 1;
  let base = scale * measurements.headCircumference * (1 + options.headEase);

  points.tipRight = new Point(base * 0.147, 0);
  points.tipLeft = points.tipRight.flipX();
  points.tipRightCp2 = points.tipRight.shift(-115, base * 0.051);
  points.tipLeftCp1 = points.tipRightCp2.flipX();
  points.tipRightCp1 = points.tipRight.shift(-75, base * 0.195);
  points.tipLeftCp2 = points.tipRightCp1.flipX();
  points.innerMid = new Point(0, base * 0.13);
  points.outerMid = new Point(0, base * 0.226);
  points.innerMidCp2 = points.innerMid.shift(180, base * 0.13);
  points.innerMidCp1 = points.innerMidCp2.flipX();
  points.outerMidCp1 = points.outerMid.shift(180, base * 0.066);
  points.outerMidCp2 = points.outerMidCp1.flipX();

  store.set(
    "brimInnerLength",
    new Path()
      .move(points.tipRight)
      .curve(points.tipRightCp2, points.innerMidCp1, points.innerMid)
      .length() * 2
  );

  paths.seam = new Path()
    .move(points.tipLeft)
    .curve(points.tipLeftCp2, points.outerMidCp1, points.outerMid)
    .curve(points.outerMidCp2, points.tipRightCp1, points.tipRight)
    .curve(points.tipRightCp2, points.innerMidCp1, points.innerMid)
    .curve(points.innerMidCp2, points.tipLeftCp1, points.tipLeft)
    .line(points.tipLeft)
    .close()
    .attr("class", "fabric");

  if (complete) {
    points.title = points.innerMid.shiftFractionTowards(
      points.outerMidCp2,
      0.35
    );
    macro("title", {
      at: points.title,
      nr: 3,
      title: "brimBottom"
    });
    macro("grainline", {
      from: points.outerMid,
      to: points.innerMid
    });

    if (sa) paths.sa = paths.seam.offset(sa).attr("class", "fabric sa");

    if (paperless) {
      macro("hd", {
        from: points.tipLeft,
        to: points.tipRight,
        y: points.tipLeft.y - sa - 15
      });
      macro("hd", {
        from: paths.seam.edge("left"),
        to: paths.seam.edge("right"),
        y: points.tipLeft.y - sa - 30
      });
      macro("vd", {
        from: points.outerMid,
        to: points.innerMid,
        x: points.innerMid.x - 15
      });
      macro("vd", {
        from: points.outerMid,
        to: points.tipRight,
        x: points.tipRight.x + sa + 18
      });
    }
  }

  return part;
}