demo.js

/* globals $, _, Raphael, ClipperLib, RGBColor */
var selectedPolygons = 1; // Texts
var subj = {
  fillType: 1,
  random: null,
  subPolygons: 0,
  totalPoints: 0
};
var clip = {
  fillType: 1,
  random: null,
  subPolygons: 0,
  totalPoints: 0
};
var solution = {
  subPolygons: 0,
  totalPoints: 0
};
var clipType = 3; // Xor
var clean = true;
var cleanDeltaDefault = 0.1;
var cleanDelta = cleanDeltaDefault;
var simplify = true;
var lighten = true;
var lightenDistanceDefault = 0.1;
var lightenDistance = lightenDistanceDefault;
var offsettablePoly = 'solution'; //, subject, clip
var joinType = 0;
var delta = -1;
var miterLimit = 2.0;
var autoFix = true;
var scale = 100;
var scaleAddition = 100;
var dontRoundAndScale = false;
var bevel = 0;
var explorerEnabled = true;
var clipper = new ClipperLib.Clipper();
var ss, cc, sss;
var offsetResult;
var p, p1, p2, p3;
var bench;
var lastCompletedBenchmark;
var benchmarkGlob = [];
var benchmarkElapsedTime = 0;
var benchmarkExports = '';
var benchmarkRunning = false;
var benchmarkAutomaticClick = false;
var benchmarkClickedButtonId;
var benchmarkRepeat = 0;
var benchmarkRepeatTimes;
// The Phantom image
var defaultCustomSubjectPolygon = 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// The Phantom Skull Ring
var defaultCustomClipPolygon = 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    subj: '[[{"X":155,"Y":61.67},{"X":155,"Y":212.7},{"X":288.98,"Y":212.7},{"X":288.98,"Y":61.67},{"X":173.01999999999998,"Y":61.67},{"X":155,"Y":61.67}],[{"X":274.37,"Y":190.77},{"X":171.24,"Y":190.77},{"X":171.24,"Y":81.16},{"X":274.37,"Y":81.16},{"X":274.37,"Y":81.16},{"X":274.37,"Y":190.77}]]',
    clip: '[[{"X":217.69,"Y":126.14},{"X":217.69,"Y":277.17},{"X":351.66999999999996,"Y":277.17},{"X":351.66999999999996,"Y":126.14},{"X":253.71,"Y":126.14},{"X":217.69,"Y":126.14}],[{"X":337.05,"Y":255.25},{"X":233.93,"Y":255.25},{"X":233.93,"Y":145.63},{"X":337.05,"Y":145.63},{"X":337.05,"Y":145.63},{"X":337.05,"Y":255.25}]]'
  }, { // Same self intersecting
    subj: '[[{"X":172,"Y":90},{"X":222,"Y":90},{"X":222,"Y":240},{"X":322,"Y":240},{"X":322,"Y":140},{"X":172,"Y":140}]]',
    clip: '[[{"X":172,"Y":90},{"X":222,"Y":90},{"X":222,"Y":240},{"X":322,"Y":240},{"X":322,"Y":140},{"X":172,"Y":140}]]'
  }, null, null, { // Star and rectangles
    subj: '[[{"X":147.47,"Y":312.74},{"X":247.07,"Y":33.510000000000005},{"X":337.66,"Y":312.04},{"X":86.36,"Y":122.7},{"X":404.07,"Y":123.57},{"X":148.11,"Y":312.27},{"X":147.47,"Y":312.74}]]',
    clip: '[[{"X":336.36,"Y":261.38},{"X":155.25,"Y":260.49},{"X":155.25,"Y":84.06},{"X":336.36,"Y":84.06},{"X":336.36,"Y":261.38},{"X":336.36,"Y":261.38}]]'
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    clip: '[[{"X":210.91,"Y":210.89},{"X":107.65,"Y":210.65},{"X":107.65,"Y":27.58},{"X":210.91,"Y":27.75},{"X":210.91,"Y":36.45},{"X":210.91,"Y":210.89}],[{"X":304.24,"Y":323.13},{"X":210.91,"Y":322.86},{"X":210.91,"Y":70.9},{"X":304.24,"Y":70.91},{"X":304.24,"Y":148.61},{"X":304.24,"Y":323.13}],[{"X":407.5,"Y":254.59},{"X":304.24,"Y":254.35},{"X":304.24,"Y":71.28},{"X":407.5,"Y":71.28},{"X":407.5,"Y":71.28},{"X":407.5,"Y":254.59}]]'
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    clip: '[[{"X":240.31,"Y":12.26},{"X":292.45,"Y":117.59},{"X":408.23,"Y":134.69},{"X":324.43,"Y":216.63},{"X":344.16,"Y":332.1},{"X":240.06,"Y":277.63},{"X":136.4,"Y":332},{"X":155.99,"Y":216.19},{"X":72.33,"Y":134.4202},{"X":188.37,"Y":117.5},{"X":240.28,"Y":12.30999},{"X":240.31,"Y":12.26}]]'
  }, { // Glyph and grid
    subj: 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    clip: '[[{"X":305.08004,"Y":241.97},{"X":306,"Y":251.51},{"X":308.18,"Y":256.4},{"X":311.72,"Y":259.09003},{"X":317.31,"Y":260.01},{"X":324.71004,"Y":259.01},{"X":332.45,"Y":255.86},{"X":335.57,"Y":257.5396},{"X":337.6,"Y":260.44},{"X":336.94,"Y":262.33004},{"X":328.27,"Y":268.74},{"X":317.9,"Y":273.4196},{"X":307.94,"Y":275.49},{"X":296.26,"Y":275.23},{"X":286.64,"Y":272.99},{"X":279.7896,"Y":269.31},{"X":274.14,"Y":263.55},{"X":271.6597,"Y":260.21004},{"X":269.2,"Y":261.06},{"X":254.83,"Y":268.51},{"X":242.11,"Y":272.97},{"X":227.59,"Y":275.23},{"X":209.91,"Y":275.48},{"X":197.47,"Y":273.63},{"X":187.91,"Y":270.13},{"X":180.48002,"Y":265.09003},{"X":175.32,"Y":258.88},{"X":172.2098,"Y":251.44},{"X":171.1,"Y":242.23},{"X":172.24,"Y":233.63},{"X":175.49,"Y":226.24},{"X":181,"Y":219.54},{"X":189.42002,"Y":213.3},{"X":201.36,"Y":207.73},{"X":217.23,"Y":203.25},{"X":238.28,"Y":200.1},{"X":265.24,"Y":198.78},{"X":269.37,"Y":198.47},{"X":269.98,"Y":182.93},{"X":268.74,"Y":171.32},{"X":266.05,"Y":163.7098},{"X":261.58004,"Y":157.72},{"X":255.24,"Y":153.24},{"X":247.06,"Y":150.3298},{"X":235.44,"Y":149.13},{"X":224.71,"Y":150.05},{"X":215.91,"Y":153},{"X":210.23002,"Y":156.86},{"X":207.64,"Y":160.85},{"X":207.19,"Y":165.28},{"X":209.34,"Y":169.86},{"X":212.0198,"Y":174.15},{"X":212.14,"Y":177.99},{"X":209.8,"Y":181.78},{"X":204.22,"Y":185.79},{"X":197.62,"Y":187.68},{"X":188.65,"Y":187.43},{"X":182.41,"Y":185.39},{"X":178.45,"Y":181.77},{"X":176.2098,"Y":176.9},{"X":176.03,"Y":170.64},{"X":178.2,"Y":164.13},{"X":183.09,"Y":157.7},{"X":191.04002,"Y":151.36},{"X":202.01,"Y":145.8298},{"X":216.09,"Y":141.57},{"X":232.08,"Y":139.24},{"X":250.07,"Y":139.18},{"X":266.13,"Y":141.23002},{"X":279.05,"Y":145.06},{"X":289.1597,"Y":150.3},{"X":295.9196,"Y":156.19},{"X":300.73,"Y":163.41},{"X":303.85,"Y":172.47},{"X":305.07,"Y":183.78},{"X":305.07,"Y":241.97},{"X":305.08004,"Y":241.97}],[{"X":243.99,"Y":64.95},{"X":255.92,"Y":66.07},{"X":266.21004,"Y":69.28},{"X":274.98,"Y":74.44},{"X":280.65,"Y":80.19},{"X":284.03,"Y":86.85},{"X":285.26,"Y":94.52001},{"X":284.28,"Y":102.84},{"X":281.24,"Y":109.66},{"X":276.0396,"Y":115.43},{"X":267.89,"Y":120.46},{"X":257.68,"Y":123.93},{"X":245.79,"Y":125.33},{"X":232.93,"Y":124.53},{"X":222.21,"Y":121.74},{"X":213.14,"Y":117.11},{"X":207.36,"Y":111.92},{"X":203.7,"Y":105.75},{"X":201.94,"Y":98.18},{"X":202.34,"Y":90.12},{"X":204.86,"Y":83.4},{"X":210.01,"Y":76.81},{"X":217.49,"Y":71.33},{"X":227.17,"Y":67.31},{"X":238.35,"Y":65.2},{"X":243.75,"Y":64.95},{"X":243.99,"Y":64.95}],[{"X":269.99,"Y":212.88},{"X":269.48,"Y":208.76},{"X":266.59003,"Y":208.36},{"X":245.76,"Y":210.86},{"X":230.95,"Y":214.67},{"X":220.9,"Y":219.34},{"X":213.82,"Y":224.85},{"X":209.69,"Y":230.71},{"X":207.92002,"Y":237.03},{"X":208.4,"Y":244.49},{"X":210.86,"Y":250.57},{"X":215.2,"Y":255.08},{"X":221.69,"Y":258.13},{"X":230.57,"Y":259.43},{"X":242.52,"Y":258.58004},{"X":255.27,"Y":255.23},{"X":266.07,"Y":250.04},{"X":269.34003,"Y":247.02},{"X":269.99,"Y":244.81},{"X":269.99,"Y":212.88},{"X":269.99,"Y":212.88}],[{"X":243.63,"Y":73.34},{"X":235.93,"Y":74.4},{"X":230.07,"Y":77.36},{"X":225.65,"Y":82.21001},{"X":223.05,"Y":88.57},{"X":222.41,"Y":96.92},{"X":223.94,"Y":104.53},{"X":227.23,"Y":110.22},{"X":231.99,"Y":114.29},{"X":238.44,"Y":116.65},{"X":246.81,"Y":116.94},{"X":253.73,"Y":115.1},{"X":258.87,"Y":111.5},{"X":262.63,"Y":106.12},{"X":264.65,"Y":98.93},{"X":264.59003,"Y":90.25},{"X":262.47,"Y":83.41},{"X":258.6597,"Y":78.43},{"X":253.37,"Y":75.08},{"X":246.08,"Y":73.43},{"X":243.68,"Y":73.34},{"X":243.63,"Y":73.34}]]'
  }, getCustomPolygons()
];
var SVG = {
  scaledPaths: [],
  subPolyLinks: null,
  total: null,
  create: function () {
    p = Raphael('svgcontainer', 500, 350);
    p.canvas.id = 'p';
    var filter = '<filter id="innerbevel" x0="-50%" y0="-50%" width="200%" height="200%" >';
    filter += '<feGaussianBlur in="SourceAlpha" stdDeviation="2" result="blur"/>';
    filter += '<feOffset dy="3" dx="3"/>';
    filter += '<feComposite in2="SourceAlpha" operator="arithmetic" k2="-1" k3="1" result="hlDiff"/>';
    filter += '<feFlood flood-color="white" flood-opacity="0.8"/>'; // changed to 1.0 for speed
    filter += '<feComposite in2="hlDiff" operator="in"/>';
    filter += '<feComposite in2="SourceGraphic" operator="over" result="withGlow"/>';
    filter += '<feOffset in="blur" dy="-3" dx="-3"/>';
    filter += '<feComposite in2="SourceAlpha" operator="arithmetic" k2="-1" k3="1" result="shadowDiff"/>';
    filter += '<feFlood flood-color="black" flood-opacity="0.5"/>'; // changed to 1.0 for speed
    filter += '<feComposite in2="shadowDiff" operator="in"/>';
    filter += '<feComposite in2="withGlow" operator="over"/>';
    filter += '</filter>';
    // Markers to show start, mid and end points of path
    var markers = '<marker id="StartMarker" viewBox="0 0 10 10" refX="0" refY="5" markerUnits="strokeWidth" markerWidth="10" markerHeight="10" stroke="red" fill="none" orient="auto">';
    markers += '<path d="M0,5L10,5M5,0L10,5M5,10L10,5">';
    markers += '</marker>';
    markers += '<marker id="MidMarker" viewBox="-1 -1 12 12" refX="5" refY="5" markerUnits="strokeWidth" markerWidth="4" markerHeight="4" stroke="red" fill="yellow" fill-opacity="0.5" orient="0" >';
    markers += '<circle cx="5" cy="5" r="5"></circle>';
    markers += '</marker>';
    markers += '<marker id="EndMarker" viewBox="0 0 10 10" refX="5" refY="5" markerUnits="strokeWidth" markerWidth="8" markerHeight="8" stroke="blue" fill="none" orient="auto">';
    markers += '<rect x="0" y="0" width="10" height="10"></rect>';
    markers += '</marker>';

    // This second invisible marker is needed to avoid noisy after images in Chrome:
    markers += '<marker id="StartMarker2" viewBox="0 0 10 10" refX="0" refY="5" markerUnits="strokeWidth" markerWidth="10" markerHeight="10" stroke="none" fill="none" orient="auto">';
    markers += '<path d="M0,5L10,5M5,0L10,5M5,10L10,5">';
    markers += '</marker>';
    markers += '<marker id="MidMarker2" viewBox="-1 -1 12 12" refX="5" refY="5" markerUnits="strokeWidth" markerWidth="4" markerHeight="4" stroke="none" fill="none" orient="0">';
    markers += '<circle cx="5" cy="5" r="5"></circle>';
    markers += '</marker>';
    markers += '<marker id="EndMarker2" viewBox="0 0 10 10" refX="5" refY="5" markerUnits="strokeWidth" markerWidth="8" markerHeight="8" stroke="none" fill="none" orient="auto">';
    markers += '<rect x="0" y="0" width="10" height="10"></rect>';
    markers += '</marker>';
    // http://stackoverflow.com/questions/3642035/jquerys-append-not-working-with-svg-element
    $('body').append('<svg id="dummy" style="display:none"><defs>' + filter + markers + '</defs></svg>');
    $('#p defs').append($('#innerbevel'), $('#dummy marker'));
    $('#dummy').remove();
    return p;
  },
  update: function() {
      if (!p) p = SVG.create();
      if (p1) p1.remove();
      if (p2) p2.remove();
      if (p3) p3.remove();
  },
  addPaths: function (a, b, c, subjFillType, clipFillType) {
    if (a) {
      subj.subPolygons = a.length;
      a = this.polysToPath(a, 1);
      if (explorerEnabled) {
        if (typeof subj.subPolygons === 'undefined') subj.subPolygons = 0;
        $('#subj_subpolygons').html(subj.subPolygons);
        $('#subj_points_in_subpolygons').html(this.subPolyLinks);
        $('#subj_points_total').html(this.total.toString());
        subj.totalPoints = this.total;
      }
    }
    if (b) {
      clip.subPolygons = b.length;
      b = this.polysToPath(b, 2);
      if (explorerEnabled) {
        if (typeof clip.subPolygons === 'undefined') clip.subPolygons = 0;
        $('#clip_subpolygons').html(clip.subPolygons);
        $('#clip_points_in_subpolygons').html(this.subPolyLinks);
        $('#clip_points_total').html(this.total.toString());
        clip.totalPoints = this.total;
      }
    }
    solution.subPolygons = (typeof c !== 'undefined' && typeof c.length !== 'undefined') ? c.length : 0;
    if (c) {
      c = this.polysToPath(c, 3);
      if (explorerEnabled) {
        $('#solution_subpolygons').html(solution.subPolygons);
        $('#solution_points_in_subpolygons').html(this.subPolyLinks);
        $('#solution_points_total').html(this.total.toString());
        solution.totalPoints = this.total;
      }
    }
    if (explorerEnabled) {
      $('#points_total').html((subj.totalPoints + clip.totalPoints + solution.totalPoints).toString());
      if (isNaN(subj.subPolygons)) subj.subPolygons = 0;
      else if (isNaN(clip.subPolygons)) clip.subPolygons = 0;
      else if (isNaN(solution.subPolygons)) solution.subPolygons = 0;
      $('#all_subpolygons').html(subj.subPolygons + clip.subPolygons + solution.subPolygons);
    }
    if (a) {
      p1 = p.path(a);
      p1.node.id = 'p1';
      $('#p1').removeAttr('fill stroke')
        .attr('fill-rule', subjFillType === 0 ? 'evenodd' : 'nonzero');
    }
    if (b) {
      p2 = p.path(b);
      p2.node.id = 'p2';
      $('#p2').removeAttr('fill stroke')
        .attr('fill-rule', clipFillType === 0 ? 'evenodd' : 'nonzero');
    }
    if (c) {
      p3 = p.path(c);
      p3.node.id = 'p3';
      $('#p3').removeAttr('fill stroke');
      if (bevel) {
        $('#p3').attr('filter', 'url(#innerbevel)');
      } else {
        $('#p3').removeAttr('filter');
      }
    }
  },
  polysToPath: function (a, fr) {
    this.scaledPaths[fr] = [];
    var path = '', i, j, d;
    this.subPolyCounts = [];
    this.subPolyLinks = [];
    this.total = 0;
    if (!scale) scale = 1;
    for (i = 0; i < a.length; i++) {
      this.subPolyCounts.push(a[i].length);
      d = '';
      for (j = 0; j < a[i].length; j++) {
        this.total++;
        if (j === 0) {
          d += 'M';
        } else {
          d += 'L';
        }
        d += (a[i][j].X / scale) + ', ' + (a[i][j].Y / scale);
      }
      d += 'Z';
      path += d;
      if (explorerEnabled) {
        if (d.trim() === 'Z') d = '';
        this.scaledPaths[fr].push(d);
        this.subPolyLinks.push('<span class="subpolylinks" data-id="' + i + '" data-role="' + fr + '">' + a[i].length + '</span>');
      }
    }
    if (explorerEnabled) this.subPolyLinks = this.subPolyLinks.join(', ');
    if (path.trim() === 'Z') path = '';

    return path;
  }
};

function formatOutput(polygonString) {
  if (typeof polygonString !== 'string' || polygonString === '') return '';
  if (outputFormat === 'Clipper') {
    return polygonString;
  }
  var polygons;
  try {
    polygons = JSON.parse(polygonString);
  } catch (err) {
    console.warn('Unable to parse polygon for output', err.message);
    return '';
  }
  function getCoords(segment) {
    return segment.X + ',' + segment.Y;
  }
  if (outputFormat === 'Plain') {
    return '[' + polygons.map(function(polygon) {
      return '[' + polygon.map(getCoords).join(', ') + ']';
    }).join(',') + ']';
  }
  if (outputFormat === 'SVG') {
    var result = polygons.map(function(polygon) {
      return 'M' + polygon.map(getCoords).join(' L') + 'Z';
    }).join(' ');
    return (result.trim() !== 'MZ') ? result : '';
  }
}

function getCustomPolygons() {
  var value = $('#custom_polygons_select').val();
  if (value) {
    var customPolygons = $.totalStorage('custom_polygons');
    return {
      subj: customPolygons[value].subj,
      clip: customPolygons[value].clip
    };
  }
  return {
    subj: defaultCustomSubjectPolygon,
    clip: defaultCustomClipPolygon
  };
}

function getRandomPolygons(which, polygon) {
  var pointCount = randomSetting[which + 'PointCount'];
  var polygonCount = randomSetting[which + 'PolygonCount'];
  if (arguments.length === 1) polygon = _.parseInt($('input[name="polygons"]:checked').val());
  if (polygon !== 4 && polygon !== 5) return new ClipperLib.Polygons();
  var svg = $('#p');
  var margin = 10;
  randomSetting.randomMinX = 100 * margin;
  randomSetting.randomMaxX = 100 * (parseFloat(svg.attr('width'), 10) - margin);
  randomSetting.randomMinY = 100 * margin;
  randomSetting.randomMaxY = 100 * (parseFloat(svg.attr('height'), 10) - margin);
  var i, j, pp, np = new ClipperLib.Polygons(),
    previousX = null,
    previousY = null,
    vertical = null,
    previousVertical = null;
  for (i = 0; i < polygonCount; i++) {
    np[i] = new ClipperLib.Polygon();
    for (j = 0; j < pointCount; j++) {
      pp = new ClipperLib.IntPoint();
      if (polygon === 4) {
        vertical = !!_.random(0, 1); // 0 = horiz, 1 = vertic
        if (previousVertical === vertical) {
          vertical = !vertical;
        }
        // horiz => y remains same
        if (!vertical) {
          pp.X = _.random(randomSetting.randomMinX, randomSetting.randomMaxX);
          pp.Y = (previousY === null) ? _.random(randomSetting.randomMinY, randomSetting.randomMaxY) : previousY;
        // vertic => x remains same
        } else {
          pp.Y = _.random(randomSetting.randomMinY, randomSetting.randomMaxY);
          pp.X = (previousX === null) ? _.random(randomSetting.randomMinX, randomSetting.randomMaxX) : previousX;
        }
        previousX = pp.X;
        previousY = pp.Y;
        previousVertical = vertical;
        // last point fix
        if (j === pointCount - 1 && pointCount !== 1) {
          // horiz => y remains same
          if (!vertical) {
            pp.X = np[i][0].X;
          // vertic => x remains same
          } else {
            pp.Y = np[i][0].Y;
          }
        }
      } else {
        pp.X = _.random(randomSetting.randomMinX, randomSetting.randomMaxX);
        pp.Y = _.random(randomSetting.randomMinY, randomSetting.randomMaxY);
      }
      np[i].push(pp);
    }
    previousX = null;
    previousY = null;
    vertical = null;
    previousVertical = null;
  }
  randomSetting.scale = scale;
  return np;
}

function getPolygons(scaleAgain) {
  var polygon = _.parseInt($('input[name="polygons"]:checked').val());
  if(polygon !== 4 && polygon !== 5) {
    ss = deserializeClipperPolygon(defaultPolygons[polygon].subj);
    cc = deserializeClipperPolygon(defaultPolygons[polygon].clip);
  } else {
    if (!subj.random) subj.random = getRandomPolygons('subj');
    if (!clip.random) clip.random = getRandomPolygons('clip');
    if (scaleAgain) {
      subj.random = scaleAgainRandomPoly(subj.random);
      clip.random = scaleAgainRandomPoly(clip.random);
      randomSetting.scale = scale;
    }
    ss = subj.random;
    cc = clip.random;
  }
  sss = [[]];
}

function scaleAgainRandomPoly(poly) {
  for (var i = 0; i < poly.length; i++) {
    for (var j = 0; j < poly[i].length; j++) {
      poly[i][j].X = round(poly[i][j].X / randomSetting.scale);
      poly[i][j].Y = round(poly[i][j].Y / randomSetting.scale);
    }
  }
  return poly;
}

function round(a) {
  if (dontRoundAndScale) return a;
  return Math.floor(a * scale);
}

function deserializeClipperPolygon(polygonString) {
  lsk++;
  var rawPolygons = JSON.parse(polygonString),
    polygons = [[]], point;
  for (var i = 0; i < rawPolygons.length; i++) {
    polygons[i] = [];
    for (var j = 0; j < rawPolygons[i].length; j++) {
      if (isNaN(Number(rawPolygons[i][j].X)) || isNaN(Number(rawPolygons[i][j].Y))) {
        return [[]];
      }
      point = new ClipperLib.IntPoint(round(Number(rawPolygons[i][j].X)), round(Number(rawPolygons[i][j].Y)));
      if (benchmarkRunning) {
        if (point.X > bench.maxPointX) bench.maxPointX = point.X;
        if (point.Y > bench.maxPointY) bench.maxPointY = point.Y;
        if (point.X < bench.minPointX) bench.minPointX = point.X;
        if (point.Y < bench.minPointY) bench.minPointY = point.Y;
        if (typeof bench.points['L' + point.X] === 'undefined') bench.points['L' + point.X] = scale + ':' + point.X + ':' + rawPolygons[i][j].X;
        if (typeof bench.points['L' + point.Y] === 'undefined') bench.points['L' + point.Y] = scale + ':' + point.Y + ':' + rawPolygons[i][j].Y;
      }
      polygons[i].push(point);
    }
  }
  return polygons;
}

function saveCustomPolygon(polygon, index) {
  var customPolygons = $.totalStorage('custom_polygons');
  if (!_.isArray(customPolygons) || _.isEmpty(customPolygons)) customPolygons = [];
  if (typeof index === 'undefined') {
    customPolygons.push(polygon);
  } else {
    customPolygons[index] = polygon;
  }
  updateCustomPolygonsSelect();
  return $.totalStorage('custom_polygons', customPolygons);
}

function setDefaultCustomPolygons(reset) {
  if (reset) $.totalStorage('custom_polygons', []);
  saveCustomPolygon({
    subj: defaultCustomSubjectPolygon,
    clip: defaultCustomClipPolygon
  }, 0);
}

function updateCustomPolygonsSelect() {
  var arr = $.totalStorage('custom_polygons');
  var value = _.parseInt($('#custom_polygons_select').val()) || 0;
  $('#custom_polygons_select option').remove();
  var i, arr_length = _.isArray(arr) ? arr.length : 0;
  if (arr_length > 0)
    for (i = 0; i < arr_length; i++) {
      if (arr[i] !== null) $('#custom_polygons_select').append('<option ' + (i === value ? 'selected' : '') + ' value="' + i + '">Poly ' + i + '</option>');
    }
  // If previously selected value is removed, select the next one
  if (arr_length > 0 && arr[value] === null)
    for (i = _.parseInt(value); i < arr_length; i++) {
      if (arr[i] !== null) {
        $('#custom_polygons_select').val(i);
        break;
      }
    }
  $('#custom_polygons_select').change();
}

function updateEnlargedSVGSource() {
  var source = $('#svgcontainer').html().replace(/\>/g, '>\n');
  if (updateSVGSource) {
    $('#svg_source_textarea').val(source);
  }
  if (updateEnlargedSVG) {
    $('#enlarged_svg').html(source.replace(/ id=\"/g, ' id="_'));
    var originalHeight = $('#_p').attr('height');
    var originalWidth = $('#_p').attr('width');
    // get bbox of all children of svg
    $('body').append('<div id="dummy" style="display:block;visibility:hidden"><svg><g id="g123"></g></svg></div>');
    $('#g123').append($('#_p').children().clone());
    $('#dummy').html($('#dummy').html());
    var bBox = $('#g123')[0].getBBox();
    $('#dummy').remove();
    $('#_p').attr('viewBox', (bBox.x - 5) + ' ' + (bBox.y - 5) + ' ' + (bBox.width + 10) + ' ' + (bBox.height + 10));
    $('#enlarged_svg').html($('#enlarged_svg').html()).show();
    $('#_p').attr('width', windowWidth).attr('height', _.parseInt((windowWidth / originalWidth) * originalHeight));
    $('#_p1, #_p2, #_p3').css('stroke-width', 0.8 * (originalWidth / windowWidth));
  }
}

function benchmark2(i) {
  var startTime = new Date().getTime();
  var obj = benchmarkGlob[i];
  clean = false;
  $('#clean').prop('checked', clean);
  lighten = false;
  $('#lighten').prop('checked', lighten);
  joinType = obj.joinType;
  $('input[name="joinType"][value="' + joinType + '"]').prop('checked', true);
  offsettablePoly = obj.offsettablePoly;
  $('input[name="offsettable_poly"][value="' + offsettablePoly + '"]').prop('checked', true);
  delta = obj.delta;
  $('#delta').val(delta);
  miterLimit = obj.miterLimit;
  $('#miterLimit').val(miterLimit);
  autoFix = obj.autoFix;
  $('#autoFix').prop('checked', autoFix);
  simplify = obj.simplify;
  $('#simplify').prop('checked', simplify);
  subj.fillType = obj.subjectFillType;
  $('input[name="subject_fillType"][value="' + subj.fillType + '"]').prop('checked', true);
  clip.fillType = obj.clipFillType;
  $('input[name="clip_fillType"][value="' + clip.fillType + '"]').prop('checked', true);
  clipType = obj.clipType;
  $('input[name="clipType"][value="' + clipType + '"]').prop('checked', true);
  scale = obj.scale;
  $('#scale').val(scale);
  if (obj.polygonId === 4 || obj.polygonId === 5) randomSetting = obj.randomSetting;
  $('input[name="polygons"][value="' + obj.polygonId + '"]').prop('checked', true).trigger('change');
  obj = null;
  lastCompletedBenchmark = i;
  var endTime = new Date().getTime();
  var time = endTime - startTime;
  benchmarkElapsedTime += time;
  benchmarkGlob[i].measuredTime = time;
  benchmarkGlob[i].elapsedTime = benchmarkElapsedTime;
  // update next timeouts
  for (var lsk = i + 1; lsk < benchmarkGlob.length; lsk++) {
    clearTimeout(benchmarkGlob[lsk].setTimeout);
    benchmarkGlob[lsk].setTimeout = setTimeout('benchmark2(' + lsk + ')', benchmarkGlob[lsk].elapsedTime + lsk * benchmarkGlob[lsk].time);
  }
  var multipleRunsTable;
  var elapsedTime = endTime - bench.list[0].start;
  var results = Math.floor((i + 1) / benchmarkGlob.length * 100) + ' % (';
  results += (elapsedTime / 1000).toFixed(1) + ' s) of ';
  results += 'benchmark ' + (benchmarkRepeat + 1) + ' / ' + benchmarkRepeatTimes + '. ';
  results += 'Remaining: ' + Math.floor((((elapsedTime / (i + 1)) * (benchmarkGlob.length - i + 1)) / 1000)) + ' s.';
  $('#benchmark_multiple_status').html(results).css('display', 'table-cell');
  if (i === 0) {
    multipleRunsTable = bench.printMultipleRuns();
    if ($('#benchmark_multiple_table').length) $('#benchmark_multiple_table').remove();
    $('#benchmark_multiple_table_cont').append(multipleRunsTable);
  } else if (i === benchmarkGlob.length - 1) {
    if (!$('#benchmark_exports_textarea').length) {
      var textarea = '<div id="benchmark_exports_textarea_div">';
      textarea += '<button onClick="$(\'#benchmark_exports_textarea_div\').remove()" title="Hide Benchmark exports">Hide</button><br>';
      textarea += '<textarea id="benchmark_exports_textarea"></textarea></div>';
      $('#benchmark_exports_container').append(textarea);
    }
    if (!_.contains(benchmarkExports, 'maxPointX')) {
      benchmarkExports += 'bench.maxPointX:' + bench.maxPointX + '\n';
      benchmarkExports += 'bench.maxPointY:' + bench.maxPointY + '\n';
      benchmarkExports += 'bench.minPointX:' + bench.minPointX + '\n';
      benchmarkExports += 'bench.minPointY:' + bench.minPointY + '\n';
    }
    benchmarkExports += bench.totals + ';' + JSON.stringify($.browser) + '\n';
    $('#benchmark_exports_textarea').val(benchmarkExports);
    bench.totals_arr_multiple.push(bench.totals_arr[0]);
    multipleRunsTable = bench.printMultipleRuns();
    if ($('#benchmark_multiple_table').length) $('#benchmark_multiple_table').remove();
    $('#benchmark_multiple_table_cont').append(multipleRunsTable);
    benchmarkRepeat++;
    var clickedBenchmark = $('#' + benchmarkClickedButtonId);
    if (benchmarkRepeat < benchmarkRepeatTimes) {
      benchmarkAutomaticClick = true;
      clickedBenchmark.trigger('click');
    } else {
      disableBenchmarkButton(clickedBenchmark);
    }
  }
}

function disableBenchmarkButton(button) {
  benchmarkGlob.length = 0;
  benchmarkRepeat = 0;
  benchmarkRunning = false;
  ClipperLib.MaxSteps = ClipperLibOriginalMaxSteps;
  button.html(button.html().replace('Stop', 'Run')).attr('title', button.attr('title').replace('Stop', 'Execute'));
  $('button, input, select').prop('disabled', false);
  $('#explorer_enabled').trigger('change');
}

var Benchmark = function () {
  this.list = [];
  this.cats = [];
  this.cats.arr = [];
  this.includeSVG = true;
  this.totals = '';
  this.totals_arr = [];
  this.totals_arr_multiple = [];
  this.maxPointX = Number.NEGATIVE_INFINITY;
  this.minPointX = Number.POSITIVE_INFINITY;
  this.maxPointY = Number.NEGATIVE_INFINITY;
  this.minPointY = Number.POSITIVE_INFINITY;
  this.points = [];
};
// cat = category, which name belongs to, name = code region name or function, which is measured
Benchmark.prototype.start = function (cat, name) {
  if (!cat || !name) return;
  this.list.push({
    start: new Date().getTime(),
    name: name,
    cat: cat
  });
  return this.list.length - 1;
};
Benchmark.prototype.end = function (index) {
  this.list[index].end = new Date().getTime();
  this.list[index].time = this.list[index].end - this.list[index].start;
  var this_list_cat = this.list[index].cat;
  var this_list_cat_counts = this_list_cat + '_counts';
  var this_list_cat_time_sum = this_list_cat + '_time_sum';
  if (typeof this.cats[this_list_cat_counts] === 'undefined') this.cats.arr.push(this_list_cat);
  if (typeof this.cats[this_list_cat_time_sum] === 'undefined') this.cats[this_list_cat_time_sum] = 0;
  if (typeof this.cats[this_list_cat_counts] === 'undefined') this.cats[this_list_cat_counts] = 0;
  this.cats[this_list_cat_time_sum] += this.list[index].time;
  this.cats[this_list_cat_counts]++;
  if (benchmarkGlob.length > 0) {
    this.list[index].benchmarkGlob_index = lastCompletedBenchmark;
  }
};
Benchmark.prototype.clear = function () {
  this.list = [];
  this.cats = [];
  this.cats.arr = [];
  this.includeSVG = true;
};
Benchmark.prototype.print = function (all) {
  var i, tbl = '<table class="bench"><thead><tr><th>Num</th><th>Name</th><th>Category</th><th>Time</th></tr></thead><tbody>';
  if (!_.isEmpty(this.list)) {
    var startIndex = 0;
    if (!all) {
      startIndex = benchmarkGlob.length ? this.list.length - 3 : this.list.length - 16;
      if (startIndex < 0) startIndex = 0;
    }
    for (i = startIndex; i < this.list.length; i++) {
      tbl += '<tr><td>' + (i + 1) + '</td><td>' + this.list[i].name + '</td><td>' + this.list[i].cat + '</td><td>' + this.list[i].time + '</td></tr>';
    }
  }
  tbl += '</tbody></table>';
  this.totals = '';
  this.totals_arr = [];
  var tbl2 = '<table class="bench"><thead><tr><th>Num</th><th>Category</th><th>Calls</th><th>Sum</th><th>Avg</th></tr></thead><tbody>',
    totals_arr_item = [],
    item,
    counts_sum = 0,
    cat_time_sum = 0,
    this_list_i_cat, this_list_i_cat_time_sum, this_list_i_cat_counts;
  if (this.cats.arr.length > 0)
    for (i = 0; i < this.cats.arr.length; i++) {
      tbl2 += '<tr><td> ' + (i + 1) + '</td><td>';
      this_list_i_cat = this.cats.arr[i];
      tbl2 += this_list_i_cat;
      tbl2 += '</td><td>';
      this_list_i_cat_counts = this.cats[this_list_i_cat + '_counts'];
      tbl2 += this_list_i_cat_counts;
      counts_sum += this_list_i_cat_counts;
      tbl2 += '</td><td>';
      this_list_i_cat_time_sum = this.cats[this_list_i_cat + '_time_sum'];
      tbl2 += this_list_i_cat_time_sum;
      cat_time_sum += this_list_i_cat_time_sum;
      tbl2 += '</td><td>';
      tbl2 += (this_list_i_cat_time_sum / this_list_i_cat_counts).toFixed(4);
      tbl2 += '</td></tr>';
    }
  tbl2 += '</tbody>';
  if (this.cats.arr.length > 0) {
    tbl2 += '<tfoot><tr><td colspan="2">Total</td>';
    totals_arr_item.push(counts_sum);
    this.totals += counts_sum + ';';
    tbl2 += '<td>' + counts_sum + '</td>';
    totals_arr_item.push(cat_time_sum);
    this.totals += cat_time_sum + ';';
    tbl2 += '<td>' + cat_time_sum + '</td>';
    item = (cat_time_sum / counts_sum).toFixed(4);
    totals_arr_item.push(item);
    this.totals += item;
    tbl2 += '<td style="padding: 4px; background-color: hsl(125, 73%, 80%); border: 3px solid black; font-weight: bold; font-size: 16px;">' + item + '</td>';
    tbl2 += '</tr></tfoot>';
  }
  tbl2 += '</table>';
  this.totals_arr.push(totals_arr_item);
  tbl += tbl2;
  var disabled = benchmarkRunning ? 'disabled' : '';
  tbl += '<button ' + disabled + ' onClick="try { bench.clear();$(\'#benchmark_div\').html(bench.print()); } catch (e) {return false}">Clear Benchmarks</button>';
  tbl += '<button ' + disabled + ' onClick="try { $(\'#benchmark_div\').html(bench.print(true)); } catch (e) {return false}">Show all</button>';
  return tbl;
};
Benchmark.prototype.printMultipleRuns = function () {
  var table = '<table class="bench" id="benchmark_multiple_table"><thead><tr><th>Num</th><th>Calls</th><th>Sum</th><th>Avg</th></tr></thead><tbody>';
  var i, times = [];
  for (i = 0; i < this.totals_arr_multiple.length; i++) {
    times.push(this.totals_arr_multiple[i][1]);
  }
  var max = _.max(times);
  var min = _.min(times);
  var range = max - min;
  var average = +_.average(times).toFixed(4);
  var standardDeviation = _.stdDeviation(times).toFixed(4);
  var minusRange = min - average;
  var plusRange = max - average;
  for (i = 0; i < this.totals_arr_multiple.length; i++) {
    table += '<tr><td>';
    table += (i + 1);
    table += '</td><td>';
    table += this.totals_arr_multiple[i][0];
    table += '</td><td>';
    table += this.totals_arr_multiple[i][1];
    table += '</td><td>';
    table += this.totals_arr_multiple[i][2];
    table += '</td></tr>';
  }
  table += '<tr><td colspan="4" id="benchmark_multiple_status" style="display:none"></td></tr>';
  if (!isNaN(average)) {
    table += '<tr><td colspan="4">';
    table += '<b>Average:</b> ' + average + ' ms<br>';
    table += '<b>Min:</b> ' + min + ' ms<br>';
    table += '<b>Max:</b> ' + max + ' ms<br>';
    table += '<b>Range:</b> ' + range.toFixed(4) + ' ms<br>';
    table += '<b>Minus-Range:</b> ' + minusRange.toFixed(4) + ' ms<br>';
    table += '<b>Plus-Range:</b> ' + plusRange.toFixed(4) + ' ms<br>';
    table += '<b>Stdev:</b> ' + standardDeviation + ' ms<br>';
    table += '<b>Range/Average %:</b> ' + (range / average * 100).toFixed(4) + '<br>';
    table += '<b>Minus-Range/Average %:</b> ' + (minusRange / average * 100).toFixed(4) + '<br>';
    table += '<b>Plus-Range/Average %:</b> ' + (plusRange / average * 100).toFixed(4) + '<br>';
    table += '<b>Stdev/Average %:</b> ' + (standardDeviation / average * 100).toFixed(4) + '<br>';
    table += '</td></tr>';
  }
  table += '</tbody>';
  return table;
};

function colorizeBoxes() {
  var bgColor = new RGBColor($('#p').css('background-color')),
    fillColor, strokeColor, fillOpacity, strokeOpacity;
  for (var i = 1; i <= 3; i++) {
    fillColor = new RGBColor($('#p' + i).css('fill'));
    fillOpacity = $('#p' + i).css('fill-opacity');
    fillColor = fillColor.flattenRGBA(fillOpacity, bgColor);
    strokeColor = new RGBColor($('#p' + i).css('stroke'));
    strokeOpacity = $('#p' + i).css('stroke-opacity');
    strokeColor = strokeColor.flattenRGBA(strokeOpacity, bgColor);
    $('#' + ['subject', 'clip', 'solution'][i - 1] + '_box').css('background-color', fillColor);
  }
}

function bindHelp() {
  $('#help_custom_polygon').click(function () {
    var txt = 'A) You can add your own custom polygons in several formats:\n\n';
    txt += '1) The program uses as an inner default the following format: JSON-stringified array of arrays of point objects eg. [[{"X":100,"Y":100},{"X":200,"Y":100},{"X":200,"Y":200},{"X":100,"Y":200}],[{"X":110,"Y":110},{"X":210,"Y":110},{"X":210,"Y":210},{"X":110,"Y":210}]]. This format allows to input sub polygons. Each sub polygon is an array of point objects. This format makes it easy to transfer polygons to other programs that use Clipper library and is suitable for storing polygons in database.\n\n';
    txt += '2) JSON-stringified array of point objects eg. [{"X":100,"Y":100},{"X":200,"Y":100},{"X":200,"Y":200},{"X":100,"Y":200}]. This format doesn\'t allow to input sub polygons.\n\n';
    txt += '3) JSON-stringified array of arrays of coordinates without "X" and "Y" eg. [[100,100,200,100,200,200,100,200],[110,110,210,110,210,210,110,210]]. This format allows to input sub polygons. Each sub polygon is an array of coordinates so that each x coordinate is followed by an y coordinate. This format makes it easy to transfer polygons to other programs that use Clipper library and is suitable for storing polygons in database.\n\n';
    txt += '4) JSON-stringified array of x and y coordinates eg. [100,100,200,100,200,200,100,200] or [100 100 200 100 200 200 100 200] or [100 100,200 100,200 200,100 200] or the same without []:s. This format doesn\'t allow to input sub polygons.\n\n';
    txt += '5) SVG path strings with commands MLVHZ or mlvhz eg. M100,100 L200,100 L200,200 L100,200Z M110,110 L210,110 L210,210 L110,210Z. This format allows to input sub polygons. Each subpolygon starts with M (moveto) command.\n\n';
    txt += 'B) Custom polygons are saved in browser\'s Local Storage, so they should be tolerant for page reload and browser crashes.';
    alert(txt);
  });
  $('#help_builtin_polygon_sets').click(function() {
    var txt = 'Builtin polygon sets\n\n';
    txt += 'You can add builtin polygon sets into Subj and Clip input fields to edit copies of them.\n\n';
    txt += 'Note! Before saving, nothing happens. After saving, the SVG window is also updated.';
    alert(txt);
  });
  $('#help_output_format').click(function() {
    var txt = 'Output format\n\n';
    txt += 'To change the polygon coordinate output format please use the above dropdown. The available formats are:\n\n';
    txt += '- Clipper: [[{"X":100,"Y":100},{"X":200,"Y":200}]]\n\n';
    txt += '- Plain: [[100,100,200,200]]\n\n';
    txt += '- SVG: M100,100L200,200Z\n\n';
    txt += 'There are two places where this has effect: 1) the above text box 2) the Subj and Clip text boxes in Custom Polygon fieldset.';
    alert(txt);
  });
}

function bindInputListeners() {
  // reveal custom fieldsets
  $('input[type="radio"][name="polygons"]').change(function () {
    var val = _.parseInt($(this).val());
    $('#custom_polygons_fieldset, #random_polygons_fieldset').hide();
    if (val === 10) {
      $('#custom_polygons_fieldset').show();
      updateCustomPolygonsSelect();
      $('#custom_polygons_select').change();
    }
    if (val === 4 || val === 5) {
      $('#random_polygons_fieldset').show();
      randomSettings.current = (val === 4) ? 'rect' : 'norm';
      var r = randomSetting, rs = randomSettings;
      // Test for ranges
      if (r.clipPointCount < rs[rs.current].min.clipPointCount) r.clipPointCount = rs[rs.current].min.clipPointCount;
      if (r.clipPointCount > rs[rs.current].max.clipPointCount) r.clipPointCount = rs[rs.current].max.clipPointCount;
      $('#clip_point_count').val(r.clipPointCount);
      if (r.clipPolygonCount < rs[rs.current].min.clipPolygonCount) r.clipPolygonCount = rs[rs.current].min.clipPolygonCount;
      if (r.clipPolygonCount > rs[rs.current].max.clipPolygonCount) r.clipPolygonCount = rs[rs.current].max.clipPolygonCount;
      $('#clip_polygon_count').val(r.clipPolygonCount);
      if (r.subjPointCount < rs[rs.current].min.subjPointCount) r.subjPointCount = rs[rs.current].min.subjPointCount;
      if (r.subjPointCount > rs[rs.current].max.subjPointCount) r.subjPointCount = rs[rs.current].max.subjPointCount;
      $('#subj_point_count').val(r.subjPointCount);
      if (r.subjPolygonCount < rs[rs.current].min.subjPolygonCount) r.subjPolygonCount = rs[rs.current].min.subjPolygonCount;
      if (r.subjPolygonCount > rs[rs.current].max.subjPolygonCount) r.subjPolygonCount = rs[rs.current].max.subjPolygonCount;
      $('#subj_polygon_count').val(r.subjPolygonCount);
      subj.random = getRandomPolygons('subj', val);
      clip.random = getRandomPolygons('clip', val);
    }
    makeClip();
  });
  $('#generate_random_polygons').hold(function () {
    subj.random = getRandomPolygons('subj');
    clip.random = getRandomPolygons('clip');
    makeClip();
  });
  // Select dropdown
  $('#sample_custom_polygon').change(function () {
    var polygon = _.parseInt($(this).val());
    var subj = '', clip = '';
    dontRoundAndScale = true;
    if(polygon !== 4 && polygon !== 5) {
      subj = deserializeClipperPolygon(defaultPolygons[polygon].subj);
      clip = deserializeClipperPolygon(defaultPolygons[polygon].clip);
    } else {
      subj = getRandomPolygons('subj', polygon);
      clip = getRandomPolygons('clip', polygon);
    }
    dontRoundAndScale = false;
    if (subj !== '') subj = JSON.stringify(subj);
    if (clip !== '') clip = JSON.stringify(clip);
    $('#custom_polygon_subj').val(formatOutput(subj));
    $('#custom_polygon_clip').val(formatOutput(clip));
  });
  $('#save_custom_polygon').click(function () {
    var subj = normalizeClipperPolygons($('#custom_polygon_subj').val());
    var clip = normalizeClipperPolygons($('#custom_polygon_clip').val());
    if (subj === false || clip === false) return false;
    var value = _.parseInt($('#custom_polygons_select').val());
    if (value) {
      saveCustomPolygon({
        subj: subj,
        clip: clip
      }, value);
      alert('Polygon ' + value + ' updated!');
    } else if (value === 0) {
      alert('The default custom polygon cannot be overwrited. If you want to modify it, save it first as a new.');
    }
    else alert('Polygon update failed!');
  });
  $('#add_as_new_custom_polygon').click(function () {
    var subj = normalizeClipperPolygons($('#custom_polygon_subj').val());
    var clip = normalizeClipperPolygons($('#custom_polygon_clip').val());
    if (subj === false || clip === false) return false;
    var customPolygons = saveCustomPolygon({
      subj: subj,
      clip: clip
    });
    $('#custom_polygons_select').val(customPolygons.length - 1).change();
    alert('New polygon ' + (customPolygons.length - 1) + ' added!');
  });
  $('#custom_polygons_select').change(function () {
    var value = _.parseInt($('#custom_polygons_select').val());
    var customPolygons = $.totalStorage('custom_polygons');
    if (_.isArray(customPolygons) && customPolygons[value]) {
      $('#custom_polygon_subj').val(formatOutput(customPolygons[value].subj));
      $('#custom_polygon_clip').val(formatOutput(customPolygons[value].clip));
      makeClip();
    }
  });
  $('#remove_custom_polygon').click(function () {
    var value = _.parseInt($('#custom_polygons_select').val());
    if (value === 0) {
      alert('Cannot remove the default polygon.');
    } else if (value) {
      if (confirm('Remove custom polygon ' + value + '?')) {
        saveCustomPolygon(null, value);
      }
    }
  });
  $('#removeall_custom_polygon').click(function () {
    var count = $('#custom_polygons_select option').length;
    if (count > 1) {
      if (confirm('Remove all ' + (count -1)  + ' custom polygons?')) {
        setDefaultCustomPolygons(true);
      }
    }
  });

  // Subject FillType
  $('input[name="subject_fillType"]').change(function () {
    subj.fillType = _.parseInt(this.value);
    makeClip();
  });

  // Clip FillType
  $('input[name="clip_fillType"]').change(function () {
    clip.fillType = _.parseInt(this.value);
    makeClip();
  });

  // Clip type (operation)
  $('input[name="clipType"]').change(function () {
    offsettablePoly = $('input[name="clipType"][value=""]').is(':checked') ? 'subject' : 'solution';
    $('input[name="offsettable_poly"][value="' + offsettablePoly + '"]').prop('checked', true);
    clipType = $('input[name="clipType"]:checked').val();
    if (clipType !== '') clipType = _.parseInt(clipType);
    makeClip();
  });

  // Cleaning and simplifying
  $('#clean').change(function () {
    clean = $(this).prop('checked');
    if (clean && !$('#cleandelta').val()+''.trim()) {
      cleanDelta = cleanDeltaDefault;
      $('#cleandelta').val(cleanDelta);
    }
    makeClip();
  });
  $('#cleandelta').change(function () {
    var value = parseFloat(this.value);
    if (!isNaN(value)) cleanDelta = value;
    makeClip();
  });
  $('#simplify').change(function () {
    simplify = $(this).prop('checked');
    makeClip();
  });
  $('#lighten').change(function () {
    lighten = $(this).prop('checked');
    if (lighten && !$('#lighten_distance').val()+''.trim()) {
      lightenDistance = lightenDistanceDefault;
      $('#lighten_distance').val(lightenDistance);
    }
    makeClip();
  });
  $('#lighten_distance').change(function () {
    var value = parseFloat(this.value);
    if (!isNaN(value)) lightenDistance = value;
    makeClip();
  });

  // Offsetting
  $('input[name="offsettable_poly"]').change(function () {
    offsettablePoly = this.value;
    // When offsettable poly is set to Subject or Clip, then boolean operations are not done.
    // To show this to user, set clipType to "No"
    if (offsettablePoly === 'subject' || offsettablePoly === 'clip') {
      $('input[name="clipType"][value=""]').prop('checked', true);
      clipType = '';
    }
    makeClip();
  });
  $('input[name="joinType"]').change(function () {
    joinType = _.parseInt(this.value);
    makeClip();
  });

  function getDeltaChanger(direction) {
    return function () {
      var original = $('#delta').val();
      if (!isNaN(original)) delta = parseFloat(original);
      delta += direction;
      makeClip();
    };
  }
  $('#delta_minus').hold(getDeltaChanger(-1));
  $('#delta').change(getDeltaChanger(0));
  $('#delta_plus').hold(getDeltaChanger(1));

  function getMiterChanger(direction) {
    return function() {
      var original = $('#miterLimit').val();
      if (!isNaN(original)) miterLimit = parseFloat(original);
      miterLimit += direction;
      if (miterLimit < 1.0) miterLimit = 1.0;
      makeClip();
    };
  }
  $('#miterLimit_minus').hold(getMiterChanger(-0.1));
  $('#miterLimit').change(getMiterChanger(0));
  $('#miterLimit_plus').hold(getMiterChanger(0.1));

  $('#autoFix').change(function () {
    autoFix = $(this).prop('checked');
    makeClip();
  });

  // Scale
  $('#scale_minus').hold(function () {
    var original = $('#scale').val();
    if (original && !isNaN(original) && _.parseInt(original).toString() !== '0') scale = parseFloat(original);
    scale = Math.round((scale - scaleAddition) / scaleAddition) * scaleAddition;
    if (scale <= 0) scale = 1.0;
    $('#scale').val(scale.toFixed(1)).trigger('change');
  });
  $('#scale').change(function () {
    if (this.value && !isNaN(this.value) && _.parseInt(this.value).toString() !== '0') {
      scale = parseFloat(this.value);
      getPolygons(true);
      sss = cc;
      makeClip();
    }
  });
  $('#scale_plus').hold(function () {
    var original = $('#scale').val();
    if (original && !isNaN(original) && _.parseInt(original).toString() !== '0') scale = parseFloat(original);
    scale = Math.round((scale + scaleAddition) / scaleAddition) * scaleAddition;
    $('#scale').val(scale.toFixed(1)).trigger('change');
  });

  function getChanger(key, direction) {
    return function() {
      var input = this.id.match('((.*)count)(_?.*)')[1],
        original = $('#' + input).val(),
        r = randomSetting, rs = randomSettings;
      if (!isNaN(original)) r[key] = parseFloat(original);
      r[key] += direction;
      if (!direction || direction === -1) {
        if (r[key] < rs[rs.current].min[key]) r[key] = rs[rs.current].min[key];
      } else if (!direction || direction === 1) {
        if (r[key] > rs[rs.current].max[key]) r[key] = rs[rs.current].max[key];
      }
      $('#' + input).val(r[key]);
      subj.random = getRandomPolygons('subj');
      clip.random = getRandomPolygons('clip');
      makeClip();
    };
  }
  $('#subj_polygon_count_minus').hold(getChanger('subjPolygonCount', -1));
  $('#subj_polygon_count').change(getChanger('subjPolygonCount', 0));
  $('#subj_polygon_count_plus').hold(getChanger('subjPolygonCount', 1));
  $('#subj_point_count_minus').hold(getChanger('subjPointCount', -1));
  $('#subj_point_count').change(getChanger('subjPointCount', 0));
  $('#subj_point_count_plus').hold(getChanger('subjPointCount', 1));
  $('#clip_polygon_count_minus').hold(getChanger('clipPolygonCount', -1));
  $('#clip_polygon_count').change(getChanger('clipPolygonCount', 0));
  $('#clip_polygon_count_plus').hold(getChanger('clipPolygonCount', 1));
  $('#clip_point_count_minus').hold(getChanger('clipPointCount', -1));
  $('#clip_point_count').change(getChanger('clipPointCount', 0));
  $('#clip_point_count_plus').hold(getChanger('clipPointCount', 1));

  // Bevel checkbox
  $('#bevel').change(function () {
    bevel = $(this).prop('checked');
    if (bevel) {
      $('#p3').attr('filter', 'url(#innerbevel)');
    } else {
      $('#p3').removeAttr('filter');
    }
    updateEnlargedSVGSource();
  });
  $('#show_svg_source').click(function() {
    updateSVGSource = !updateSVGSource;
    $('#svg_source_container').toggle(updateSVGSource);
    updateEnlargedSVGSource();
  });
  $('#show_enlarged_svg').click(function() {
    updateEnlargedSVG = !updateEnlargedSVG;
    $('#enlarged_svg').toggle(updateEnlargedSVG);
    updateEnlargedSVGSource();
  });
  $('#explorer_enabled').change(function () {
    explorerEnabled = $(this).prop('checked');
    if (explorerEnabled) {
      SVG.update();
      SVG.addPaths(ss, cc, offsetResult, subj.fillType, clip.fillType);
    } else {
      $('#subj_subpolygons, #subj_points_in_subpolygons, #subj_points_total, #clip_subpolygons, #clip_points_in_subpolygons, #clip_points_total, #solution_subpolygons, #solution_points_in_subpolygons, #solution_points_total, #points_total, #all_subpolygons').html('');
    }
  });
  // formats internal representation of polygons to specified output format and prints them on input fields
  $('#output_format').change(function () {
    outputFormat = $(this).val();
    if (!$('#custom_polygons_fieldset').is(':hidden')) {
      var subj = normalizeClipperPolygons($('#custom_polygon_subj').val());
      var clip = normalizeClipperPolygons($('#custom_polygon_clip').val());
      if (subj !== false && clip !== false) {
        $('#custom_polygon_subj').val(formatOutput(subj));
        $('#custom_polygon_clip').val(formatOutput(clip));
      }
    }
    var polygonExplorerString = normalizeClipperPolygons($('#polygon_explorer_string_inp').val());
    if (polygonExplorerString !== false) {
      $('#polygon_explorer_string_inp').val(formatOutput(polygonExplorerString));
    }
  });

  $('#benchmark1, #benchmark2, #benchmark1b, #benchmark2b').click(function () {
    benchmarkClickedButtonId = this.id;
    if (benchmarkRunning && !benchmarkAutomaticClick) {
      for (var lsk = 0; lsk < benchmarkGlob.length; lsk++) {
        clearTimeout(benchmarkGlob[lsk].setTimeout);
      }
      return disableBenchmarkButton($(this));
    }
    // disable buttons that are not allowed to click when running
    $('button, input, select').prop('disabled', true);
    $('#benchmark1, #benchmark2, #benchmark1b, #benchmark2b').each(function () {
      $(this).prop('disabled', this.id !== benchmarkClickedButtonId);
    });
    $(this).html($(this).html().replace('Run', 'Stop')).attr('title', $(this).attr('title').replace('Execute', 'Stop'));
    benchmarkAutomaticClick = false;
    benchmarkRunning = true;
    ClipperLib.MaxSteps = 10;
    bench.clear();
    bench.includeSVG = false;
    lastCompletedBenchmark = '';
    benchmarkGlob.length = 0;
    benchmarkRepeatTimes = (this.id === 'benchmark1b' || this.id === 'benchmark2b') ? 5 : 1;
    var polygonId;
    var deltaLocal, clipTypeLocal, joinTypeLocal;
    var offsettablePolyLocal, offsettablePolyLocal_start, offsettablePolyLocal_end;
    var miterLimitLocal, miterLimitLocal_end;
    var fillTypeLocal, fillTypeLocal_start;
    var timeout_time = 0;
    var timeout_time_addition = 0;
    var deltaLocals = [-5, 0, 10, 30], deltaLocal_i;
    var scaleLocal = (this.id === 'benchmark1' || this.id === 'benchmark1b') ? 100 : 100000000;
    for (polygonId = 0; polygonId < 10; polygonId++) {
      if (!(polygonId === 0 || polygonId === 1 || polygonId === 7 || polygonId === 8 || polygonId === 9)) continue;
      fillTypeLocal_start = (polygonId === 4 || polygonId === 5) ? 0 : 1;
      for (fillTypeLocal = fillTypeLocal_start; fillTypeLocal < 2; fillTypeLocal++) {
        for (clipTypeLocal = 0; clipTypeLocal < 5; clipTypeLocal++) {
          if (clipTypeLocal === 0) {
            offsettablePolyLocal_start = 1;
            offsettablePolyLocal_end = 2;
          } else {
            offsettablePolyLocal_start = 3;
            offsettablePolyLocal_end = 3;
          }
          for (offsettablePolyLocal = offsettablePolyLocal_start; offsettablePolyLocal < offsettablePolyLocal_end + 1; offsettablePolyLocal++) {
            if (polygonId === 0 && offsettablePolyLocal === 2) continue;
            for (joinTypeLocal = 0; joinTypeLocal < 3; joinTypeLocal++) {
              for (deltaLocal_i = 0; deltaLocal_i < deltaLocals.length; deltaLocal_i++) {
                deltaLocal = deltaLocals[deltaLocal_i];
                miterLimitLocal_end = (joinTypeLocal === 2 && deltaLocal !== 0) ? 6 : 1;
                for (miterLimitLocal = 1; miterLimitLocal < miterLimitLocal_end + 1; miterLimitLocal += 2) {
                  benchmarkGlob[benchmarkGlob.length] = {
                    polygonId: polygonId,
                    joinType: joinTypeLocal, // 0,1
                    offsettablePoly: ['', 'subject', 'clip', 'solution'][offsettablePolyLocal],
                    delta: deltaLocal, // -10 - 10
                    miterLimit: miterLimitLocal, // 1 - 5
                    autoFix: true, // false, true
                    simplify: false, // false, true
                    subjectFillType: fillTypeLocal, // 0,1
                    clipFillType: fillTypeLocal, //0, 1
                    clipType: (clipTypeLocal === 0) ? '' : clipTypeLocal - 1, // '',0,1,2,3
                    scale: scaleLocal, // 100, 100 000, 1000 000 000
                    randomSetting: {
                      clipPolygonCount: 4,
                      clipPointCount: 4,
                      subjPolygonCount: 4,
                      subjPointCount: 4
                    }
                  };
                  timeout_time += timeout_time_addition;
                  benchmarkGlob[benchmarkGlob.length - 1].setTimeout = setTimeout('benchmark2(' + (benchmarkGlob.length - 1) + ')', timeout_time);
                  benchmarkGlob[benchmarkGlob.length - 1].timeout_time = timeout_time;
                }
              }
            }
          }
        }
      }
    }
  });

  $('.polygon_explorer').on({
    // set and show hightlighted path
    mouseover: function() {
      if (benchmarkRunning) return false;
      var id = this.dataset.id,
        role = this.dataset.role,
        d = typeof id === 'undefined' ? SVG.scaledPaths[role].join(' ') : SVG.scaledPaths[role][id];
      SVG.highlightedPath = p.path(d);
      $(SVG.highlightedPath.node).removeAttr('fill stroke').attr({
        'class': 'highlightedPath',
        'fill-rule': $('#p' + role).attr('fill-rule'),
        'vector-effect': 'non-scaling-stroke'
      });
    },
    // enlarge highligthed path
    click: function() {
      if (benchmarkRunning) return false;
      var id = this.dataset.id,
        role = this.dataset.role,
        d = typeof id === 'undefined' ? SVG.scaledPaths[role].join(' ') : SVG.scaledPaths[role][id],
        points_string = normalizeClipperPolygons(d),
        area = 0;
      if (points_string !== false) {
        if (typeof id === 'undefined') {
          $('#polygon_explorer_string_inp').val(formatOutput(points_string));
          for (var j = 0; j < SVG.scaledPaths.length; j++) {
            var points_str = normalizeClipperPolygons(SVG.scaledPaths[role][j], true);
            if (points_str !== false) {
              var polygon = JSON.parse(points_str.replace(/^\[\[/, '[').replace(/\]\]$/, ']'));
              area += ClipperLib.Clipper.Area(polygon);
            }
          }
        } else {
          $('#polygon_explorer_string_inp').val(formatOutput(points_string).replace(/^\[\[/, '[').replace(/\]\]$/, ']'));
          area = ClipperLib.Clipper.Area(JSON.parse(points_string.replace(/^\[\[/, '[').replace(/\]\]$/, ']')));
        }
        $('#area').html('Area: ' + area);
      } else {
        $('#polygon_explorer_string_inp').val('Some error occurred when parsing polygon points!');
      }
      $(SVG.highlightedPath.node).removeAttr('fill stroke').attr({
        'class': 'highlightedPath',
        'fill-rule': $('#p' + role).attr('fill-rule'),
        'vector-effect': 'non-scaling-stroke'
      });
      var bBox = SVG.highlightedPath.node.getBBox();
      var SVGWidth = _.parseInt($('#p').attr('width'));
      var SVGHeight = _.parseInt($('#p').attr('height'));
      var scal = Math.min((SVGWidth - 20) / bBox.width, (SVGHeight - 20) / bBox.height);
      var xTrans = -(bBox.x + bBox.width / 2) + SVGWidth / 2;
      var yTrans = -(bBox.y + bBox.height / 2) + SVGHeight / 2;
      $('#StartMarker')[0].setAttribute('markerWidth', 10 / scal * 2);
      $('#StartMarker')[0].setAttribute('markerHeight', 10 / scal * 2);
      $('#MidMarker')[0].setAttribute('markerWidth', 4 / scal * 2);
      $('#MidMarker')[0].setAttribute('markerHeight', 4 / scal * 2);
      $('#EndMarker')[0].setAttribute('markerWidth', 4 / scal * 2);
      $('#EndMarker')[0].setAttribute('markerHeight', 4 / scal * 2);
      SVG.highlightedPath.animate({
        'transform': 't' + xTrans + ' ' + yTrans + 's' + scal + ' ' + scal
      }, 500, function () {
        $(SVG.highlightedPath.node).attr({
          'marker-start': 'url(#StartMarker)',
          'marker-mid': 'url(#MidMarker)',
          'marker-end': 'url(#EndMarker)'
        });
      });
    },
    // hide highlighted path
    mouseout: function() {
      if (!SVG.highlightedPath) return;
      $(SVG.highlightedPath.node).attr({
        'marker-start': 'url(#StartMarker2)',
        'marker-mid': 'url(#MidMarker2)',
        'marker-end': 'url(#EndMarker2)'
      });
      if ($(SVG.highlightedPath.node).attr('transform'))
        SVG.highlightedPath.animate({
          'transform': 's1 1'
        }, 500, function () {
          this.animate({
            'opacity': '0'
          }, 500, function () {
            this.remove();
          });
        });
      else
        SVG.highlightedPath.animate({
          'opacity': '0'
        }, 300, function () {
          this.remove();
        });
    }
  }, '.subpolylinks');
}

function setInputValues() {
  $('input[name="polygons"][value="' + selectedPolygons + '"]').prop('checked', true).change();
  $('#subj_polygon_count').val(randomSetting.subjPolygonCount);
  $('#subj_point_count').val(randomSetting.subjPointCount);
  $('#clip_polygon_count').val(randomSetting.clipPolygonCount);
  $('#clip_point_count').val(randomSetting.clipPointCount);
  $('input[name="subject_fillType"][value="' + subj.fillType + '"]').prop('checked', true);
  $('input[name="clip_fillType"][value="' + clip.fillType + '"]').prop('checked', true);
  $('input[name="offsettable_poly"][value="' + offsettablePoly + '"]').prop('checked', true);
  $('#delta').val(delta.toFixed(1));
  $('#miterLimit').val(miterLimit.toFixed(1));
  $('#autoFix').prop('checked', autoFix);
  $('#clean').prop('checked', clean);
  $('#cleandelta').val(cleanDeltaDefault);
  $('#simplify').prop('checked', simplify);
  $('#lighten').prop('checked', lighten);
  $('#lighten_distance').val(lightenDistanceDefault);
  $('#scale').val(scale.toFixed(1));
  $('#bevel').prop('checked', bevel);
  $('#explorer_enabled').prop('checked', explorerEnabled);
  $('#output_format').val(outputFormat);
}

function makeClip() {
  var benchId;
  ClipperLib.biginteger_used = null;
  clipper.Clear();
  getPolygons();
  if (clipType !== '' && offsettablePoly === 'solution') {
    clipper.AddPolygons(ss, ClipperLib.PolyType.ptSubject);
    clipper.AddPolygons(cc, ClipperLib.PolyType.ptClip);
    sss = new ClipperLib.Polygons();
    benchId = bench.start('Boolean', 'Execute(' + clipType + ', sss, ' + subj.fillType + ', ' + clip.fillType + ')');
    clipper.Execute(clipType, sss, subj.fillType, clip.fillType);
    bench.end(benchId);
  }

  offsettablePoly = $('input[name="offsettable_poly"]:checked').val();
  if (offsettablePoly === 'subject') {
    offsetResult = ClipperLib.Clone(ss);
  } else if (offsettablePoly === 'clip') {
    offsetResult = ClipperLib.Clone(cc);
  } else if (offsettablePoly === 'solution') {
    offsetResult = sss;
  }

  if (typeof offsetResult === 'undefined' || !_.isArray(sss)) offsetResult = [[]];

  if (ClipperLib.biginteger_used === null) ClipperLib.biginteger_used = 0;

  if (clean) {
    offsetResult = ClipperLib.Clean(offsetResult, cleanDelta * scale);
  }

  // Must simplify before offsetting, to get offsetting right in certain cases.
  // Other operations (boolean ones) doesn't need this.
  // This is needed when offsetting polygons that has selfintersecting parts ( eg. 5-point star needs this )
  if (simplify) {
    // Simplifying is only needed when offsetting original polys, because results of boolean operations are already simplified.
    // Note! if clip polygon is the same as subject polygon then it seems that simplifying is needed also for result of boolean operation (ie. solution).
    if (offsettablePoly === 'subject') {
      offsetResult = clipper.SimplifyPolygons(offsetResult, subj.fillType);
    }
    if (offsettablePoly === 'clip') {
      offsetResult = clipper.SimplifyPolygons(offsetResult, clip.fillType);
    }
    if (offsettablePoly === 'solution') {
      offsetResult = clipper.SimplifyPolygons(offsetResult, clip.fillType);
      if (subj.fillType !== clip.fillType) {
        console.log('Subject filltype and Clip filltype are different. We used Clip filltype in SimplifyPolygons().');
      }
    }
  }

  // Actual offset operation
  if (delta) {
    clipper.Clear();
    var paramDelta = _.round(delta * scale, 3);
    var paramMiterLimit = _.round(miterLimit, 3);
    benchId = bench.start('Offset', 'Offset(' + paramDelta + ', ' + joinType + ', ' + paramMiterLimit + ', ' + autoFix + ')');
    offsetResult = clipper.OffsetPolygons(offsetResult, paramDelta, joinType, paramMiterLimit, autoFix);
    bench.end(benchId);
  }

  if (lighten) {
    offsetResult = ClipperLib.Lighten(offsetResult, lightenDistance * scale);
    // Because lighten may produce self-intersections, must Simplify to be sure that result is free of them, but only if user wants
    if (simplify) {
      offsetResult = clipper.SimplifyPolygons(offsetResult, subj.fillType);
    }
  }

  SVG.update();
  if (bench.includeSVG) benchId = bench.start('SVG', 'addPaths(ss, cc, offsetResult,  ' + subj.fillType + ', ' + clip.fillType + ')');
  SVG.addPaths(ss, cc, offsetResult, subj.fillType, clip.fillType);
  if (bench.includeSVG) bench.end(benchId);

  if (ClipperLib.biginteger_used !== null) {
    $('#biginteger_used').html(ClipperLib.biginteger_used ? 'true' : 'false');
  }
  else $('#biginteger_used').html('unknown');
  ClipperLib.biginteger_used = null;

  // Update delta to form
  $('#delta').val(delta.toFixed(1));
  // Update miterlimit to form
  $('#miterLimit').val(miterLimit.toFixed(1));
  // Print benchmark
  $('#benchmark_div').html(bench.print());
  updateEnlargedSVGSource();
}

window.onload = function () {
  ClipperLibOriginalMaxSteps = ClipperLib.MaxSteps;
  bench = new Benchmark();
  p = SVG.create();
  bindHelp();
  bindInputListeners();
  setInputValues();
  makeClip();
  colorizeBoxes();
  setDefaultCustomPolygons();
};