freesewing/packages/sven/src/shared.js

export const draftRibbing = function(part, length) {
  let {
    store,
    measurements,
    options,
    points,
    paths,
    Path,
    Point,
    sa,
    complete,
    paperless,
    macro,
    units
  } = part.shorthand();
  if (typeof store.get("ribbingHeight") === "undefined") {
    store.set(
      "ribbingHeight",
      (measurements.centerBackNeckToWaist + measurements.naturalWaistToHip) *
        options.ribbingHeight
    );
  }
  let height = store.get("ribbingHeight");
  let gap = 25;
  let lead = 50;
  if (length < 125) lead = length / 3;

  points.topLeft = new Point(0, 0);
  points.topRight = new Point(height * 2, 0);
  points.leftGapStart = new Point(0, lead);
  points.rightGapEnd = new Point(points.topRight.x, lead);
  points.leftGapEnd = new Point(0, lead + gap);
  points.rightGapStart = new Point(points.topRight.x, lead + gap);
  points.bottomLeft = new Point(0, gap + 2 * lead);
  points.bottomRight = new Point(points.topRight.x, gap + 2 * lead);

  paths.seam = new Path()
    .move(points.rightGapEnd)
    .line(points.topRight)
    .line(points.topLeft)
    .line(points.leftGapStart)
    .move(points.leftGapEnd)
    .line(points.bottomLeft)
    .line(points.bottomRight)
    .line(points.rightGapStart)
    .attr("class", "various");

  paths.hint = new Path()
    .move(points.leftGapStart)
    .line(points.leftGapEnd)
    .move(points.rightGapStart)
    .line(points.rightGapEnd)
    .attr("class", "various dashed");

  if (complete) {
    points.title = new Point(
      points.bottomRight.x / 2,
      points.bottomRight.y / 2
    );
    if (sa) {
      paths.sa = new Path()
        .move(points.topLeft)
        .line(points.bottomLeft)
        .line(points.bottomRight)
        .line(points.topRight)
        .line(points.topLeft)
        .close()
        .offset(sa)
        .attr("class", "various sa");
    }
  }

  if (paperless) {
    macro("vd", {
      from: points.bottomRight,
      to: points.topRight,
      x: points.topRight.x + sa + 15,
      text: units(length)
    });
    macro("hd", {
      from: points.topLeft,
      to: points.topRight,
      y: points.topRight.y - sa - 15
    });
  }
};