freesewing/packages/florent/src/brimbottom.js

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
}