export default function(part) {
  // Remove clutter
  let seam = part.paths.seam;
  part.paths = {};
  part.paths.seam = seam;

  let {
    store,
    sa,
    Point,
    points,
    Path,
    paths,
    Snippet,
    snippets,
    complete,
    paperless,
    macro,
    debug
  } = part.shorthand();

  // Hem is more descripting than hips in this case
  //points.cbHem = points.cbHips;
  // points.hem = points.hips;

  // Ribbing
  points.cbRibbing = points.cbHem.shift(90, store.get("ribbing"));
  points.ribbing = points.hem.shift(90, store.get("ribbing"));

  // Raglan tip
  let neckOpening = new Path()
    .move(points.cbNeck)
    .curve(points.cbNeck, points.neckCp2, points.neck);
  points.raglanTipBack = neckOpening.shiftFractionAlong(0.7);
  let neckOpeningParts = neckOpening.split(points.raglanTipBack);
  // Paths
  paths.saBase = new Path()
    .move(points.cbRibbing)
    .line(points.ribbing)
    .line(points.armhole)
    .curve(points.armholeCp2, points.armholeHollowCp1, points.armholeHollow)
    .line(points.raglanTipBack)
    .join(neckOpeningParts[0].reverse());
  paths.seam = paths.saBase
    .clone()
    .close()
    .attr("class", "fabric");
  paths.saBase.render = false;

  // Store neck opening path
  store.set("neckOpeningPartBack", neckOpeningParts[1]);
  store.set("neckOpeningAnchorBack", points.neck);
  store.set("neckOpeningLenBack", neckOpening.length());
  store.set("neckCutoutBack", points.cbNeck.y);

  // Complete pattern?
  if (complete) {
    macro("cutonfold", {
      from: points.cbNeck,
      to: points.cbRibbing,
      grainline: true
    });
    points.title = new Point(points.armhole.x / 2, points.armhole.y);
    macro("title", { at: points.title, nr: 2, title: "back" });
    store.set("notchBack", points.raglanTipBack.dist(points.armholeHollow) / 2);
    points.sleeveNotch = points.raglanTipBack.shiftTowards(
      points.armholeHollow,
      store.get("notchBack")
    );
    snippets.sleeveNotch = new Snippet("bnotch", points.sleeveNotch);
    store.set(
      "backRaglanTipToNotch",
      points.raglanTipBack.dist(points.sleeveNotch)
    );
    points.logo = points.title.shift(-90, 70);
    snippets.logo = new Snippet("logo", points.logo);
    if (sa) {
      paths.sa = paths.saBase
        .offset(sa)
        .line(points.cbNeck)
        .attr("class", "fabric sa");
      paths.sa.move(points.cbRibbing).line(paths.sa.start());
    }
  }

  // Paperless?
  if (paperless) {
    macro("vd", {
      from: points.cbRibbing,
      to: points.cbNeck,
      x: points.cbNeck.x - 15
    });
    macro("vd", {
      from: points.cbRibbing,
      to: points.raglanTipBack,
      x: points.cbNeck.x - 30
    });
    macro("vd", {
      from: points.ribbing,
      to: points.armhole,
      x: points.ribbing.x + 15 + sa
    });
    macro("hd", {
      from: points.cbNeck,
      to: points.raglanTipBack,
      y: points.raglanTipBack.y - 15 - sa
    });
    macro("hd", {
      from: points.raglanTipBack,
      to: points.armhole,
      y: points.raglanTipBack.y - 15 - sa
    });
    macro("hd", {
      from: points.cbRibbing,
      to: points.ribbing,
      y: points.cbRibbing.y + 15 + sa
    });
  }

  return part;
}