freesewing/packages/jaeger/src/undersleeve.js

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

  // Vent
  let slope = 15;
  let width = measurements.wristCircumference * (1 + options.cuffEase) * options.sleeveVentWidth;
  points.ventFoldRight = points.usWristLeft.shiftOutwards(points.usWristRight, width);
  points.ventHelper = points.usWristRight.shiftFractionTowards(points.elbowRight, options.sleeveVentLength);
  points.ventSlopeEnd = points.ventHelper
    .shiftTowards(points.usWristRight, width)
    .rotate(90, points.ventHelper);
  points.ventSlopeStart = utils.beamsIntersect(
    points.usWristRight, points.elbowRight,
    points.ventSlopeEnd, points.ventHelper.rotate(-1 * slope, points.ventSlopeEnd)
  );

  // Hem
  let hemSa = sa ? 3*sa : 30;
  points.hemHelperLeft = points.usWristLeft
    .shiftTowards(points.usWristRight, hemSa)
    .rotate(90, points.usWristLeft);
  points.hemHelperRight = points.usWristRight
    .shiftTowards(points.usWristLeft, hemSa)
    .rotate(-90, points.usWristRight);
  points.hemLeftIntersection = utils.beamsIntersect(
    points.hemHelperLeft, points.hemHelperRight,
    points.usWristLeft, points.usElbowLeft
  );
  points.hemRightIntersection = utils.beamsIntersect(
    points.hemHelperLeft, points.hemHelperRight,
    points.usWristRight, points.elbowRight
  );
  points.hemVentIntersection = utils.beamsIntersect(
    points.hemHelperLeft, points.hemHelperRight,
    points.ventFoldRight, points.ventSlopeEnd
  );
  points.hemLeft = points.hemLeftIntersection
    .rotate(points.usWristLeft.angle(points.hemLeftIntersection) * -2, points.usWristLeft);
  points.hemRight = points.hemRightIntersection
    .rotate(points.usWristRight.angle(points.hemRightIntersection) * -2, points.usWristRight);
  points.ventRight = points.hemVentIntersection
    .rotate(points.ventFoldRight.angle(points.hemVentIntersection) * -2, points.ventFoldRight);

  // Clean up - Remove this and uncomment paths below to understand what's going on
  for (let i of Object.keys(paths)) delete paths[i];

  // Paths
  paths.seam = new Path()
    .move(points.ventFoldRight)
    .line(points.ventSlopeEnd)
    .line(points.ventSlopeStart)
    .line(points.elbowRight)
    .curve(points.elbowRightCpTop, points.usRightEdgeCpBottom, points.usRightEdge)
    .curve_(points.usRightEdgeCpTop, points.usTip)
    .curve(points.usTipCpBottom, points.usLeftEdgeCpRight, points.usLeftEdgeRight)
    .line(points.usLeftEdge)
    ._curve(points.usElbowLeftCpTop, points.usElbowLeft)
    .line(points.usWristLeft)
    .line(points.hemLeft)
    .line(points.ventRight)
    .line(points.ventFoldRight)
    .close()
    .attr("class", "fabric");

  paths.ventHint = new Path()
    .move(points.ventSlopeStart)
    .line(points.usWristRight)
    .attr("class", "stroke-sm help");

  paths.hem = new Path()
    .move(points.usWristLeft)
    .line(points.ventFoldRight)
    .attr("class", "fabric lashed");

  if (complete) {
    // Notches
    macro("sprinkle", {
      snippet: "notch",
      on: [
        "top",
        "usElbowLeft",
        "elbowRight",
      ]
    });
    // Title
    points.title = points.tsLeftEdge.shiftFractionTowards(points.tsRightEdge, 0.5);
    macro("title", {
      at: points.title,
      nr: 5,
      title: "underSleeve"
    });

    // Grainline
    macro("grainline", {
      from: points.boxBottom,
      to: points.armCenter
    });

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

  return part;
}