ClashTheBunny · March 4, 2017 19:14
diff --git a/.gitignore b/.gitignore
 ne_10m_*
diff --git a/README.md b/README.md
diff --git a/README.topoJSON.md b/README.topoJSON.md
diff --git a/bower.json b/bower.json
 {
  "name": "papuaNewGuinea",
  "homepage": "https://github.com/ClashTheBunny/papuaNewGuinea",
  "description": "Animation of number of plane flights sponsored at a VBS event.",
  "main": "index.html",
  "authors": [
    "Randall Mason <randall@mason.ch>"
  ],
  "license": "Apache 2.0",
  "ignore": [
    "**/.*",
    "node_modules",
    "bower_components",
    "test",
    "tests"
  ],
  "dependencies": {
    "babel-polyfill": "^0.0.1",
    "aureooms-js-itertools": "^1.3.0",
    "jquery": "^3.0.0"
  }
 }
diff --git a/browser-polyfill.js b/browser-polyfill.js
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diff --git a/build_png.json.sh b/build_png.json.sh
 #!/bin/sh

 wget http://www.naturalearthdata.com/http//www.naturalearthdata.com/download/10m/cultural/ne_10m_populated_places.zip

 unzip ne_10m_populated_places.zip ne_10m_populated_places.shp

 ogr2ogr -f GeoJSON \
  -where "ISO_A2 = 'PG' AND SCALERANK < 10" places.json  ne_10m_populated_places.shp

 topojson   -o png.json   --id-property gn_id   --properties  --  subunits.json places.json
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diff --git a/index.html b/index.html
 <!DOCTYPE html>
 <meta charset="utf-8">
 <style>

  .count {
    font-size: 100px;
    pointer-events: none;
  }

  .subunit.PNB { fill: #cdc; }
  .subunit.PNX { fill: #dcd; }
  .subunit.IDN { display: none; }
  svg { fill: rgb(216,216,216); }

 .subunit-boundary {
  fill: none;
  stroke: #777;
  stroke-dasharray: 2,2;
  stroke-linejoin: round;
 }

 .subunit-boundary.IDN {
  stroke: #aaa;
 }


 .place,
 .place-label {
  fill: #444;
 }

 text {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 10px;
  pointer-events: none;
 }

 .route {
  fill: none;
  stroke: red;
  stroke-dasharray: 2,2;
  stroke-linejoin: round;
  stroke-width: 1em;
 }
 .plane.boy {
  fill: #2b65EC;
  stroke-width: 0;
 }
 .plane.girl {
  fill: pink;
  stroke-width: 0;
 }
 .plane.both {
  fill: #fff;
  stroke: #000;
  stroke-width: 0.1 em;
 }

 </style>
 <body>
  <script src="browser-polyfill.js"></script>
  <script src="itertools.min.js"></script>
  <script src="jquery.min.js"></script>
  <script src="d3.min.js" charset="utf-8"></script>
  <script src="topojson.min.js"></script>
  <link href="https://fonts.googleapis.com/css?family=Faster+One|Frijole" rel="stylesheet">
  <script>
 function shuffle(array) {
    counter = array.length;

    // While there are elements in the array
    while (counter > 0) {
        // Pick a random index
        index = Math.floor(Math.random() * counter);

        // Decrease counter by 1
        counter--;

        // And swap the last element with it
        temp = array[counter];
        array[counter] = array[index];
        array[index] = temp;
    }

    return array;
 }

    var width = 960,
        height = 450;

    var svg = d3.select("body").append("svg")
        .attr("width", width)
        .attr("height", height);

      var projection = d3.geo.mercator()
          .center([148.5, -6.5])
          .scale(3000)
          .translate([width / 2, height / 2]);
      var path = d3.geo.path()
          .projection(projection);

  var airportMap = {};

  function transition(plane, route, percent) {
    var l = route.node().getTotalLength();
    plane.transition()
        .duration(4000)
        .attrTween("transform", delta(plane, route.node(), percent))
        .remove();
   return l*10;
  }
  
  function delta(plane, path, percent) {
    var l = path.getTotalLength();
    var plane = plane;
    return function(i) {
      return function(t) {
        var s = 5*Math.min(Math.sin(Math.PI * t) * 0.7, 0.3);

 				if( t > percent) {
           var p = path.getPointAtLength(percent * l);
           var t2 = Math.min(t + 0.05, 1);
           var p2 = path.getPointAtLength(t2 * l);

           var x = p2.x - p.x;
           var y = p2.y - p.y;
           var r = 90 - Math.atan2(-y, x) * 180 / Math.PI + (t - percent)*360;
 				} else {
           var p = path.getPointAtLength(t * l);
           var t2 = Math.min(t + 0.05, 1);
           var p2 = path.getPointAtLength(t2 * l);

           var x = p2.x - p.x;
           var y = p2.y - p.y;
           var r = 90 - Math.atan2(-y, x) * 180 / Math.PI;
        }

        return "translate(" + p.x + "," + p.y + ") scale(" + s + ") rotate(" + r + ")";
      }
    }
  }

  function fly(origin, destination, gender, percent) {
    var route = svg.append("path")
                   .datum({type: "LineString", coordinates: [airportMap[origin], airportMap[destination]]})
                   .attr("class", "route")
                   .attr("d", path);

    var plane = svg.append("path")
                   .attr("class", "plane " + gender)
                   .attr("d", "m25.21488,3.93375c-0.44355,0 -0.84275,0.18332 -1.17933,0.51592c-0.33397,0.33267 -0.61055,0.80884 -0.84275,1.40377c-0.45922,1.18911 -0.74362,2.85964 -0.89755,4.86085c-0.15655,1.99729 -0.18263,4.32223 -0.11741,6.81118c-5.51835,2.26427 -16.7116,6.93857 -17.60916,7.98223c-1.19759,1.38937 -0.81143,2.98095 -0.32874,4.03902l18.39971,-3.74549c0.38616,4.88048 0.94192,9.7138 1.42461,13.50099c-1.80032,0.52703 -5.1609,1.56679 -5.85232,2.21255c-0.95496,0.88711 -0.95496,3.75718 -0.95496,3.75718l7.53,-0.61316c0.17743,1.23545 0.28701,1.95767 0.28701,1.95767l0.01304,0.06557l0.06002,0l0.13829,0l0.0574,0l0.01043,-0.06557c0,0 0.11218,-0.72222 0.28961,-1.95767l7.53164,0.61316c0,0 0,-2.87006 -0.95496,-3.75718c-0.69044,-0.64577 -4.05363,-1.68813 -5.85133,-2.21516c0.48009,-3.77545 1.03061,-8.58921 1.42198,-13.45404l18.18207,3.70115c0.48009,-1.05806 0.86881,-2.64965 -0.32617,-4.03902c-0.88969,-1.03062 -11.81147,-5.60054 -17.39409,-7.89352c0.06524,-2.52287 0.04175,-4.88024 -0.1148,-6.89989l0,-0.00476c-0.15655,-1.99844 -0.44094,-3.6683 -0.90277,-4.8561c-0.22699,-0.59493 -0.50356,-1.07111 -0.83754,-1.40377c-0.33658,-0.3326 -0.73578,-0.51592 -1.18194,-0.51592l0,0l-0.00001,0l0,0z");

    return transition(plane, route, percent);
  }

 var randomColor = (function(){
  var golden_ratio_conjugate = 0.618033988749895;
  var h = Math.random();

  var hslToRgb = function (h, s, l){
      var r, g, b;

      if(s == 0){
          r = g = b = l; // achromatic
      }else{
          function hue2rgb(p, q, t){
              if(t < 0) t += 1;
              if(t > 1) t -= 1;
              if(t < 1/6) return p + (q - p) * 6 * t;
              if(t < 1/2) return q;
              if(t < 2/3) return p + (q - p) * (2/3 - t) * 6;
              return p;
          }

          var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
          var p = 2 * l - q;
          r = hue2rgb(p, q, h + 1/3);
          g = hue2rgb(p, q, h);
          b = hue2rgb(p, q, h - 1/3);
      }

      return '#'+Math.round(r * 255).toString(16)+Math.round(g * 255).toString(16)+Math.round(b * 255).toString(16);
  };
  
  return function(){
    h += golden_ratio_conjugate;
    h %= 1;
    return hslToRgb(h, 0.5, 0.60);
  };
 })();


    d3.json("png.json", function(error, papua) {
      if (error) return console.error(error);
      var subunits = topojson.feature(papua, papua.objects.subunits);
      svg.append("path")
          .datum(subunits)
          .attr("d", path);
      svg.selectAll(".subunit")
          .data(topojson.feature(papua, papua.objects.subunits).features)
          .enter().append("path")
          .attr("class", function(d) { return "subunit " +d.properties.adm0_a3 + " " + d.id; })
          .attr("d", path)
          .style({fill: randomColor});
      svg.append("path")
          .datum(topojson.mesh(papua, papua.objects.subunits, function(a, b) { return a !== b && a.properties.adm0_a3 !== "IDN"; }))
          .attr("d", path)
          .attr("class", "subunit-boundary");
      svg.append("path")
          .datum(topojson.mesh(papua, papua.objects.subunits, function(a, b) { return a === b && a.properties.adm0_a3 === "IDN"; }))
          .attr("d", path)
          .attr("class", "subunit-boundary IDN");

 svg.append("path")
    .datum(topojson.feature(papua, papua.objects.places))
    .attr("d", path)
    .attr("class", "place");

 svg.selectAll(".place-label")
    .data(topojson.feature(papua, papua.objects.places).features)
  .enter().append("text")
    .attr("class", "place-label")
    .attr("transform", function(d) { return "translate(" + projection(d.geometry.coordinates) + ")"; })
    .attr("dy", ".15em")
    .text(function(d) { return d.properties.NAME; });

 svg.selectAll(".place-label")
    .attr("x", function(d) { return d.geometry.coordinates[0] > -1 ? 6 : -6; })
    .style("text-anchor", function(d) { return d.geometry.coordinates[0] > -1 ? "start" : "end"; });

    count = svg.append("text")
               .attr("class", "count")
               .attr("x", "450")
               .attr("y", "130")
               .style({fill: randomColor,
                       "font-family": 'Faster One, cursive'})
               .text("0")

    var geos = topojson.feature(papua, papua.objects.places).features;
    for (i in geos) {
      airportMap[geos[i].properties.NAME] = geos[i].geometry.coordinates;
    }

  dests = topojson.feature(papua, papua.objects.places).features.map(function(d){return d.properties.NAME});

    });


    function handleClick(event){
  //cityGen = itertools.permutations(topojson.feature(papua, papua.objects.places).features.map(function(d){return d.properties.NAME}),2);
  //cityArray = shuffle(Array.from(cityGen)).slice(0,5);
 var costOfOneLeg = 150;
    var money = + document.getElementById("money").value;
    var gender = $('input[name="gender"]:checked').val();

  dests.splice(dests.indexOf("Port Moresby"), 1);
  dests.splice(dests.indexOf("Wewak"), 1);
  dests.splice(dests.indexOf("Mendi"), 1);

  cityArray = [];
       newDest = "Mendi";
       cityArray.push(["Port Moresby",newDest]);
       cityArray.push([newDest,"Wewak"]);
       cityArray.push(["Wewak", "Port Moresby"]);

    while( cityArray.length < money/costOfOneLeg ) {
       newDest = dests[Math.floor(Math.random()*dests.length)];
       dests.splice(dests.indexOf(newDest), 1);
       cityArray.push(["Port Moresby",newDest]);
       cityArray.push([newDest,"Wewak"]);
       cityArray.push(["Wewak", "Port Moresby"]);
    }

    var i = 0;
    fly(cityArray[i][0], cityArray[i][1], gender, money/costOfOneLeg - i );
    i++;
    intID = setInterval(function(){
      if (i <= money/costOfOneLeg) {
        count.text(i)
               .style({fill: randomColor})
        fly(cityArray[i][0], cityArray[i][1], gender, money/costOfOneLeg - i );
        i++;
 			} else {
        clearInterval(intID)
      }
    }, 2000);

    return false;
    }
    /* JavaScript goes here. */

  </script>
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    <input name="Submit"  type="submit" value="GO!" onclick="return handleClick()">
 		<input type="text" id="money" placeholder="Money Raised&hellip;">
  <input type="radio" name="gender" value="boy"> Boys
  <input type="radio" name="gender" value="girl"> Girls
  <input type="radio" name="gender" value="both"> Together!
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diff --git a/LICENSE.d3 b/LICENSE.d3
 Copyright (c) 2010-2016, Michael Bostock
 All rights reserved.

 Redistribution and use in source and binary forms, with or without
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diff --git a/png.json b/png.json
diff --git a/topojson.js b/topojson.js
 (function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
  typeof define === 'function' && define.amd ? define(['exports'], factory) :
  (factory((global.topojson = global.topojson || {})));
 }(this, function (exports) { 'use strict';

  function noop() {}

  function transformAbsolute(transform) {
    if (!transform) return noop;
    var x0,
        y0,
        kx = transform.scale[0],
        ky = transform.scale[1],
        dx = transform.translate[0],
        dy = transform.translate[1];
    return function(point, i) {
      if (!i) x0 = y0 = 0;
      point[0] = (x0 += point[0]) * kx + dx;
      point[1] = (y0 += point[1]) * ky + dy;
    };
  }

  function transformRelative(transform) {
    if (!transform) return noop;
    var x0,
        y0,
        kx = transform.scale[0],
        ky = transform.scale[1],
        dx = transform.translate[0],
        dy = transform.translate[1];
    return function(point, i) {
      if (!i) x0 = y0 = 0;
      var x1 = Math.round((point[0] - dx) / kx),
          y1 = Math.round((point[1] - dy) / ky);
      point[0] = x1 - x0;
      point[1] = y1 - y0;
      x0 = x1;
      y0 = y1;
    };
  }

  function reverse(array, n) {
    var t, j = array.length, i = j - n;
    while (i < --j) t = array[i], array[i++] = array[j], array[j] = t;
  }

  function bisect(a, x) {
    var lo = 0, hi = a.length;
    while (lo < hi) {
      var mid = lo + hi >>> 1;
      if (a[mid] < x) lo = mid + 1;
      else hi = mid;
    }
    return lo;
  }

  function feature(topology, o) {
    return o.type === "GeometryCollection" ? {
      type: "FeatureCollection",
      features: o.geometries.map(function(o) { return feature$1(topology, o); })
    } : feature$1(topology, o);
  }

  function feature$1(topology, o) {
    var f = {
      type: "Feature",
      id: o.id,
      properties: o.properties || {},
      geometry: object(topology, o)
    };
    if (o.id == null) delete f.id;
    return f;
  }

  function object(topology, o) {
    var absolute = transformAbsolute(topology.transform),
        arcs = topology.arcs;

    function arc(i, points) {
      if (points.length) points.pop();
      for (var a = arcs[i < 0 ? ~i : i], k = 0, n = a.length, p; k < n; ++k) {
        points.push(p = a[k].slice());
        absolute(p, k);
      }
      if (i < 0) reverse(points, n);
    }

    function point(p) {
      p = p.slice();
      absolute(p, 0);
      return p;
    }

    function line(arcs) {
      var points = [];
      for (var i = 0, n = arcs.length; i < n; ++i) arc(arcs[i], points);
      if (points.length < 2) points.push(points[0].slice());
      return points;
    }

    function ring(arcs) {
      var points = line(arcs);
      while (points.length < 4) points.push(points[0].slice());
      return points;
    }

    function polygon(arcs) {
      return arcs.map(ring);
    }

    function geometry(o) {
      var t = o.type;
      return t === "GeometryCollection" ? {type: t, geometries: o.geometries.map(geometry)}
          : t in geometryType ? {type: t, coordinates: geometryType[t](o)}
          : null;
    }

    var geometryType = {
      Point: function(o) { return point(o.coordinates); },
      MultiPoint: function(o) { return o.coordinates.map(point); },
      LineString: function(o) { return line(o.arcs); },
      MultiLineString: function(o) { return o.arcs.map(line); },
      Polygon: function(o) { return polygon(o.arcs); },
      MultiPolygon: function(o) { return o.arcs.map(polygon); }
    };

    return geometry(o);
  }

  function stitchArcs(topology, arcs) {
    var stitchedArcs = {},
        fragmentByStart = {},
        fragmentByEnd = {},
        fragments = [],
        emptyIndex = -1;

    // Stitch empty arcs first, since they may be subsumed by other arcs.
    arcs.forEach(function(i, j) {
      var arc = topology.arcs[i < 0 ? ~i : i], t;
      if (arc.length < 3 && !arc[1][0] && !arc[1][1]) {
        t = arcs[++emptyIndex], arcs[emptyIndex] = i, arcs[j] = t;
      }
    });

    arcs.forEach(function(i) {
      var e = ends(i),
          start = e[0],
          end = e[1],
          f, g;

      if (f = fragmentByEnd[start]) {
        delete fragmentByEnd[f.end];
        f.push(i);
        f.end = end;
        if (g = fragmentByStart[end]) {
          delete fragmentByStart[g.start];
          var fg = g === f ? f : f.concat(g);
          fragmentByStart[fg.start = f.start] = fragmentByEnd[fg.end = g.end] = fg;
        } else {
          fragmentByStart[f.start] = fragmentByEnd[f.end] = f;
        }
      } else if (f = fragmentByStart[end]) {
        delete fragmentByStart[f.start];
        f.unshift(i);
        f.start = start;
        if (g = fragmentByEnd[start]) {
          delete fragmentByEnd[g.end];
          var gf = g === f ? f : g.concat(f);
          fragmentByStart[gf.start = g.start] = fragmentByEnd[gf.end = f.end] = gf;
        } else {
          fragmentByStart[f.start] = fragmentByEnd[f.end] = f;
        }
      } else {
        f = [i];
        fragmentByStart[f.start = start] = fragmentByEnd[f.end = end] = f;
      }
    });

    function ends(i) {
      var arc = topology.arcs[i < 0 ? ~i : i], p0 = arc[0], p1;
      if (topology.transform) p1 = [0, 0], arc.forEach(function(dp) { p1[0] += dp[0], p1[1] += dp[1]; });
      else p1 = arc[arc.length - 1];
      return i < 0 ? [p1, p0] : [p0, p1];
    }

    function flush(fragmentByEnd, fragmentByStart) {
      for (var k in fragmentByEnd) {
        var f = fragmentByEnd[k];
        delete fragmentByStart[f.start];
        delete f.start;
        delete f.end;
        f.forEach(function(i) { stitchedArcs[i < 0 ? ~i : i] = 1; });
        fragments.push(f);
      }
    }

    flush(fragmentByEnd, fragmentByStart);
    flush(fragmentByStart, fragmentByEnd);
    arcs.forEach(function(i) { if (!stitchedArcs[i < 0 ? ~i : i]) fragments.push([i]); });

    return fragments;
  }

  function mesh(topology) {
    return object(topology, meshArcs.apply(this, arguments));
  }

  function meshArcs(topology, o, filter) {
    var arcs = [];

    function arc(i) {
      var j = i < 0 ? ~i : i;
      (geomsByArc[j] || (geomsByArc[j] = [])).push({i: i, g: geom});
    }

    function line(arcs) {
      arcs.forEach(arc);
    }

    function polygon(arcs) {
      arcs.forEach(line);
    }

    function geometry(o) {
      if (o.type === "GeometryCollection") o.geometries.forEach(geometry);
      else if (o.type in geometryType) geom = o, geometryType[o.type](o.arcs);
    }

    if (arguments.length > 1) {
      var geomsByArc = [],
          geom;

      var geometryType = {
        LineString: line,
        MultiLineString: polygon,
        Polygon: polygon,
        MultiPolygon: function(arcs) { arcs.forEach(polygon); }
      };

      geometry(o);

      geomsByArc.forEach(arguments.length < 3
          ? function(geoms) { arcs.push(geoms[0].i); }
          : function(geoms) { if (filter(geoms[0].g, geoms[geoms.length - 1].g)) arcs.push(geoms[0].i); });
    } else {
      for (var i = 0, n = topology.arcs.length; i < n; ++i) arcs.push(i);
    }

    return {type: "MultiLineString", arcs: stitchArcs(topology, arcs)};
  }

  function cartesianTriangleArea(triangle) {
    var a = triangle[0], b = triangle[1], c = triangle[2];
    return Math.abs((a[0] - c[0]) * (b[1] - a[1]) - (a[0] - b[0]) * (c[1] - a[1]));
  }

  function ring(ring) {
    var i = -1,
        n = ring.length,
        a,
        b = ring[n - 1],
        area = 0;

    while (++i < n) {
      a = b;
      b = ring[i];
      area += a[0] * b[1] - a[1] * b[0];
    }

    return area / 2;
  }

  function merge(topology) {
    return object(topology, mergeArcs.apply(this, arguments));
  }

  function mergeArcs(topology, objects) {
    var polygonsByArc = {},
        polygons = [],
        components = [];

    objects.forEach(function(o) {
      if (o.type === "Polygon") register(o.arcs);
      else if (o.type === "MultiPolygon") o.arcs.forEach(register);
    });

    function register(polygon) {
      polygon.forEach(function(ring$$) {
        ring$$.forEach(function(arc) {
          (polygonsByArc[arc = arc < 0 ? ~arc : arc] || (polygonsByArc[arc] = [])).push(polygon);
        });
      });
      polygons.push(polygon);
    }

    function area(ring$$) {
      return Math.abs(ring(object(topology, {type: "Polygon", arcs: [ring$$]}).coordinates[0]));
    }

    polygons.forEach(function(polygon) {
      if (!polygon._) {
        var component = [],
            neighbors = [polygon];
        polygon._ = 1;
        components.push(component);
        while (polygon = neighbors.pop()) {
          component.push(polygon);
          polygon.forEach(function(ring$$) {
            ring$$.forEach(function(arc) {
              polygonsByArc[arc < 0 ? ~arc : arc].forEach(function(polygon) {
                if (!polygon._) {
                  polygon._ = 1;
                  neighbors.push(polygon);
                }
              });
            });
          });
        }
      }
    });

    polygons.forEach(function(polygon) {
      delete polygon._;
    });

    return {
      type: "MultiPolygon",
      arcs: components.map(function(polygons) {
        var arcs = [], n;

        // Extract the exterior (unique) arcs.
        polygons.forEach(function(polygon) {
          polygon.forEach(function(ring$$) {
            ring$$.forEach(function(arc) {
              if (polygonsByArc[arc < 0 ? ~arc : arc].length < 2) {
                arcs.push(arc);
              }
            });
          });
        });

        // Stitch the arcs into one or more rings.
        arcs = stitchArcs(topology, arcs);

        // If more than one ring is returned,
        // at most one of these rings can be the exterior;
        // choose the one with the greatest absolute area.
        if ((n = arcs.length) > 1) {
          for (var i = 1, k = area(arcs[0]), ki, t; i < n; ++i) {
            if ((ki = area(arcs[i])) > k) {
              t = arcs[0], arcs[0] = arcs[i], arcs[i] = t, k = ki;
            }
          }
        }

        return arcs;
      })
    };
  }

  function neighbors(objects) {
    var indexesByArc = {}, // arc index -> array of object indexes
        neighbors = objects.map(function() { return []; });

    function line(arcs, i) {
      arcs.forEach(function(a) {
        if (a < 0) a = ~a;
        var o = indexesByArc[a];
        if (o) o.push(i);
        else indexesByArc[a] = [i];
      });
    }

    function polygon(arcs, i) {
      arcs.forEach(function(arc) { line(arc, i); });
    }

    function geometry(o, i) {
      if (o.type === "GeometryCollection") o.geometries.forEach(function(o) { geometry(o, i); });
      else if (o.type in geometryType) geometryType[o.type](o.arcs, i);
    }

    var geometryType = {
      LineString: line,
      MultiLineString: polygon,
      Polygon: polygon,
      MultiPolygon: function(arcs, i) { arcs.forEach(function(arc) { polygon(arc, i); }); }
    };

    objects.forEach(geometry);

    for (var i in indexesByArc) {
      for (var indexes = indexesByArc[i], m = indexes.length, j = 0; j < m; ++j) {
        for (var k = j + 1; k < m; ++k) {
          var ij = indexes[j], ik = indexes[k], n;
          if ((n = neighbors[ij])[i = bisect(n, ik)] !== ik) n.splice(i, 0, ik);
          if ((n = neighbors[ik])[i = bisect(n, ij)] !== ij) n.splice(i, 0, ij);
        }
      }
    }

    return neighbors;
  }

  function compareArea(a, b) {
    return a[1][2] - b[1][2];
  }

  function minAreaHeap() {
    var heap = {},
        array = [],
        size = 0;

    heap.push = function(object) {
      up(array[object._ = size] = object, size++);
      return size;
    };

    heap.pop = function() {
      if (size <= 0) return;
      var removed = array[0], object;
      if (--size > 0) object = array[size], down(array[object._ = 0] = object, 0);
      return removed;
    };

    heap.remove = function(removed) {
      var i = removed._, object;
      if (array[i] !== removed) return; // invalid request
      if (i !== --size) object = array[size], (compareArea(object, removed) < 0 ? up : down)(array[object._ = i] = object, i);
      return i;
    };

    function up(object, i) {
      while (i > 0) {
        var j = ((i + 1) >> 1) - 1,
            parent = array[j];
        if (compareArea(object, parent) >= 0) break;
        array[parent._ = i] = parent;
        array[object._ = i = j] = object;
      }
    }

    function down(object, i) {
      while (true) {
        var r = (i + 1) << 1,
            l = r - 1,
            j = i,
            child = array[j];
        if (l < size && compareArea(array[l], child) < 0) child = array[j = l];
        if (r < size && compareArea(array[r], child) < 0) child = array[j = r];
        if (j === i) break;
        array[child._ = i] = child;
        array[object._ = i = j] = object;
      }
    }

    return heap;
  }

  function presimplify(topology, triangleArea) {
    var absolute = transformAbsolute(topology.transform),
        relative = transformRelative(topology.transform),
        heap = minAreaHeap();

    if (!triangleArea) triangleArea = cartesianTriangleArea;

    topology.arcs.forEach(function(arc) {
      var triangles = [],
          maxArea = 0,
          triangle,
          i,
          n,
          p;

      // To store each point’s effective area, we create a new array rather than
      // extending the passed-in point to workaround a Chrome/V8 bug (getting
      // stuck in smi mode). For midpoints, the initial effective area of
      // Infinity will be computed in the next step.
      for (i = 0, n = arc.length; i < n; ++i) {
        p = arc[i];
        absolute(arc[i] = [p[0], p[1], Infinity], i);
      }

      for (i = 1, n = arc.length - 1; i < n; ++i) {
        triangle = arc.slice(i - 1, i + 2);
        triangle[1][2] = triangleArea(triangle);
        triangles.push(triangle);
        heap.push(triangle);
      }

      for (i = 0, n = triangles.length; i < n; ++i) {
        triangle = triangles[i];
        triangle.previous = triangles[i - 1];
        triangle.next = triangles[i + 1];
      }

      while (triangle = heap.pop()) {
        var previous = triangle.previous,
            next = triangle.next;

        // If the area of the current point is less than that of the previous point
        // to be eliminated, use the latter's area instead. This ensures that the
        // current point cannot be eliminated without eliminating previously-
        // eliminated points.
        if (triangle[1][2] < maxArea) triangle[1][2] = maxArea;
        else maxArea = triangle[1][2];

        if (previous) {
          previous.next = next;
          previous[2] = triangle[2];
          update(previous);
        }

        if (next) {
          next.previous = previous;
          next[0] = triangle[0];
          update(next);
        }
      }

      arc.forEach(relative);
    });

    function update(triangle) {
      heap.remove(triangle);
      triangle[1][2] = triangleArea(triangle);
      heap.push(triangle);
    }

    return topology;
  }

  var version = "1.6.26";

  exports.version = version;
  exports.mesh = mesh;
  exports.meshArcs = meshArcs;
  exports.merge = merge;
  exports.mergeArcs = mergeArcs;
  exports.feature = feature;
  exports.neighbors = neighbors;
  exports.presimplify = presimplify;

 }));
diff --git a/topojson.min.js b/topojson.min.js
 !function(n,t){"object"==typeof exports&&"undefined"!=typeof module?t(exports):"function"==typeof define&&define.amd?define(["exports"],t):t(n.topojson=n.topojson||{})}(this,function(n){"use strict";function t(){}function r(n){if(!n)return t;var r,e,o=n.scale[0],i=n.scale[1],u=n.translate[0],f=n.translate[1];return function(n,t){t||(r=e=0),n[0]=(r+=n[0])*o+u,n[1]=(e+=n[1])*i+f}}function e(n){if(!n)return t;var r,e,o=n.scale[0],i=n.scale[1],u=n.translate[0],f=n.translate[1];return function(n,t){t||(r=e=0);var c=Math.round((n[0]-u)/o),a=Math.round((n[1]-f)/i);n[0]=c-r,n[1]=a-e,r=c,e=a}}function o(n,t){for(var r,e=n.length,o=e-t;o<--e;)r=n[o],n[o++]=n[e],n[e]=r}function i(n,t){for(var r=0,e=n.length;e>r;){var o=r+e>>>1;n[o]<t?r=o+1:e=o}return r}function u(n,t){return"GeometryCollection"===t.type?{type:"FeatureCollection",features:t.geometries.map(function(t){return f(n,t)})}:f(n,t)}function f(n,t){var r={type:"Feature",id:t.id,properties:t.properties||{},geometry:c(n,t)};return null==t.id&&delete r.id,r}function c(n,t){function e(n,t){t.length&&t.pop();for(var r,e=l[0>n?~n:n],i=0,u=e.length;u>i;++i)t.push(r=e[i].slice()),s(r,i);0>n&&o(t,u)}function i(n){return n=n.slice(),s(n,0),n}function u(n){for(var t=[],r=0,o=n.length;o>r;++r)e(n[r],t);return t.length<2&&t.push(t[0].slice()),t}function f(n){for(var t=u(n);t.length<4;)t.push(t[0].slice());return t}function c(n){return n.map(f)}function a(n){var t=n.type;return"GeometryCollection"===t?{type:t,geometries:n.geometries.map(a)}:t in h?{type:t,coordinates:h[t](n)}:null}var s=r(n.transform),l=n.arcs,h={Point:function(n){return i(n.coordinates)},MultiPoint:function(n){return n.coordinates.map(i)},LineString:function(n){return u(n.arcs)},MultiLineString:function(n){return n.arcs.map(u)},Polygon:function(n){return c(n.arcs)},MultiPolygon:function(n){return n.arcs.map(c)}};return a(t)}function a(n,t){function r(t){var r,e=n.arcs[0>t?~t:t],o=e[0];return n.transform?(r=[0,0],e.forEach(function(n){r[0]+=n[0],r[1]+=n[1]})):r=e[e.length-1],0>t?[r,o]:[o,r]}function e(n,t){for(var r in n){var e=n[r];delete t[e.start],delete e.start,delete e.end,e.forEach(function(n){o[0>n?~n:n]=1}),f.push(e)}}var o={},i={},u={},f=[],c=-1;return t.forEach(function(r,e){var o,i=n.arcs[0>r?~r:r];i.length<3&&!i[1][0]&&!i[1][1]&&(o=t[++c],t[c]=r,t[e]=o)}),t.forEach(function(n){var t,e,o=r(n),f=o[0],c=o[1];if(t=u[f])if(delete u[t.end],t.push(n),t.end=c,e=i[c]){delete i[e.start];var a=e===t?t:t.concat(e);i[a.start=t.start]=u[a.end=e.end]=a}else i[t.start]=u[t.end]=t;else if(t=i[c])if(delete i[t.start],t.unshift(n),t.start=f,e=u[f]){delete u[e.end];var s=e===t?t:e.concat(t);i[s.start=e.start]=u[s.end=t.end]=s}else i[t.start]=u[t.end]=t;else t=[n],i[t.start=f]=u[t.end=c]=t}),e(u,i),e(i,u),t.forEach(function(n){o[0>n?~n:n]||f.push([n])}),f}function s(n){return c(n,l.apply(this,arguments))}function l(n,t,r){function e(n){var t=0>n?~n:n;(s[t]||(s[t]=[])).push({i:n,g:c})}function o(n){n.forEach(e)}function i(n){n.forEach(o)}function u(n){"GeometryCollection"===n.type?n.geometries.forEach(u):n.type in l&&(c=n,l[n.type](n.arcs))}var f=[];if(arguments.length>1){var c,s=[],l={LineString:o,MultiLineString:i,Polygon:i,MultiPolygon:function(n){n.forEach(i)}};u(t),s.forEach(arguments.length<3?function(n){f.push(n[0].i)}:function(n){r(n[0].g,n[n.length-1].g)&&f.push(n[0].i)})}else for(var h=0,p=n.arcs.length;p>h;++h)f.push(h);return{type:"MultiLineString",arcs:a(n,f)}}function h(n){var t=n[0],r=n[1],e=n[2];return Math.abs((t[0]-e[0])*(r[1]-t[1])-(t[0]-r[0])*(e[1]-t[1]))}function p(n){for(var t,r=-1,e=n.length,o=n[e-1],i=0;++r<e;)t=o,o=n[r],i+=t[0]*o[1]-t[1]*o[0];return i/2}function v(n){return c(n,g.apply(this,arguments))}function g(n,t){function r(n){n.forEach(function(t){t.forEach(function(t){(o[t=0>t?~t:t]||(o[t]=[])).push(n)})}),i.push(n)}function e(t){return Math.abs(p(c(n,{type:"Polygon",arcs:[t]}).coordinates[0]))}var o={},i=[],u=[];return t.forEach(function(n){"Polygon"===n.type?r(n.arcs):"MultiPolygon"===n.type&&n.arcs.forEach(r)}),i.forEach(function(n){if(!n._){var t=[],r=[n];for(n._=1,u.push(t);n=r.pop();)t.push(n),n.forEach(function(n){n.forEach(function(n){o[0>n?~n:n].forEach(function(n){n._||(n._=1,r.push(n))})})})}}),i.forEach(function(n){delete n._}),{type:"MultiPolygon",arcs:u.map(function(t){var r,i=[];if(t.forEach(function(n){n.forEach(function(n){n.forEach(function(n){o[0>n?~n:n].length<2&&i.push(n)})})}),i=a(n,i),(r=i.length)>1)for(var u,f,c=1,s=e(i[0]);r>c;++c)(u=e(i[c]))>s&&(f=i[0],i[0]=i[c],i[c]=f,s=u);return i})}}function y(n){function t(n,t){n.forEach(function(n){0>n&&(n=~n);var r=o[n];r?r.push(t):o[n]=[t]})}function r(n,r){n.forEach(function(n){t(n,r)})}function e(n,t){"GeometryCollection"===n.type?n.geometries.forEach(function(n){e(n,t)}):n.type in f&&f[n.type](n.arcs,t)}var o={},u=n.map(function(){return[]}),f={LineString:t,MultiLineString:r,Polygon:r,MultiPolygon:function(n,t){n.forEach(function(n){r(n,t)})}};n.forEach(e);for(var c in o)for(var a=o[c],s=a.length,l=0;s>l;++l)for(var h=l+1;s>h;++h){var p,v=a[l],g=a[h];(p=u[v])[c=i(p,g)]!==g&&p.splice(c,0,g),(p=u[g])[c=i(p,v)]!==v&&p.splice(c,0,v)}return u}function d(n,t){return n[1][2]-t[1][2]}function m(){function n(n,t){for(;t>0;){var r=(t+1>>1)-1,o=e[r];if(d(n,o)>=0)break;e[o._=t]=o,e[n._=t=r]=n}}function t(n,t){for(;;){var r=t+1<<1,i=r-1,u=t,f=e[u];if(o>i&&d(e[i],f)<0&&(f=e[u=i]),o>r&&d(e[r],f)<0&&(f=e[u=r]),u===t)break;e[f._=t]=f,e[n._=t=u]=n}}var r={},e=[],o=0;return r.push=function(t){return n(e[t._=o]=t,o++),o},r.pop=function(){if(!(0>=o)){var n,r=e[0];return--o>0&&(n=e[o],t(e[n._=0]=n,0)),r}},r.remove=function(r){var i,u=r._;if(e[u]===r)return u!==--o&&(i=e[o],(d(i,r)<0?n:t)(e[i._=u]=i,u)),u},r}function E(n,t){function o(n){f.remove(n),n[1][2]=t(n),f.push(n)}var i=r(n.transform),u=e(n.transform),f=m();return t||(t=h),n.arcs.forEach(function(n){var r,e,c,a,s=[],l=0;for(e=0,c=n.length;c>e;++e)a=n[e],i(n[e]=[a[0],a[1],1/0],e);for(e=1,c=n.length-1;c>e;++e)r=n.slice(e-1,e+2),r[1][2]=t(r),s.push(r),f.push(r);for(e=0,c=s.length;c>e;++e)r=s[e],r.previous=s[e-1],r.next=s[e+1];for(;r=f.pop();){var h=r.previous,p=r.next;r[1][2]<l?r[1][2]=l:l=r[1][2],h&&(h.next=p,h[2]=r[2],o(h)),p&&(p.previous=h,p[0]=r[0],o(p))}n.forEach(u)}),n}var M="1.6.26";n.version=M,n.mesh=s,n.meshArcs=l,n.merge=v,n.mergeArcs=g,n.feature=u,n.neighbors=y,n.presimplify=E});
	{
	"name": "papuaNewGuinea",
	"homepage": "https://github.com/ClashTheBunny/papuaNewGuinea",
	"description": "Animation of number of plane flights sponsored at a VBS event.",
	"main": "index.html",
	"authors": [
	"Randall Mason <randall@mason.ch>"
	],
	"license": "Apache 2.0",
	"ignore": [
	"*/.",
	"node_modules",
	"bower_components",
	"test",
	"tests"
	],
	"dependencies": {
	"babel-polyfill": "^0.0.1",
	"aureooms-js-itertools": "^1.3.0",
	"jquery": "^3.0.0"
	}
	}
	#!/bin/sh

	wget http://www.naturalearthdata.com/http//www.naturalearthdata.com/download/10m/cultural/ne_10m_populated_places.zip

	unzip ne_10m_populated_places.zip ne_10m_populated_places.shp

	ogr2ogr -f GeoJSON \
	-where "ISO_A2 = 'PG' AND SCALERANK < 10" places.json ne_10m_populated_places.shp

	topojson -o png.json --id-property gn_id --properties -- subunits.json places.json
	<!DOCTYPE html>
	<meta charset="utf-8">
	<style>

	.count {
	font-size: 100px;
	pointer-events: none;
	}

	.subunit.PNB { fill: #cdc; }
	.subunit.PNX { fill: #dcd; }
	.subunit.IDN { display: none; }
	svg { fill: rgb(216,216,216); }

	.subunit-boundary {
	fill: none;
	stroke: #777;
	stroke-dasharray: 2,2;
	stroke-linejoin: round;
	}

	.subunit-boundary.IDN {
	stroke: #aaa;
	}


	.place,
	.place-label {
	fill: #444;
	}

	text {
	font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
	font-size: 10px;
	pointer-events: none;
	}

	.route {
	fill: none;
	stroke: red;
	stroke-dasharray: 2,2;
	stroke-linejoin: round;
	stroke-width: 1em;
	}
	.plane.boy {
	fill: #2b65EC;
	stroke-width: 0;
	}
	.plane.girl {
	fill: pink;
	stroke-width: 0;
	}
	.plane.both {
	fill: #fff;
	stroke: #000;
	stroke-width: 0.1 em;
	}

	</style>
	<body>
	<script src="browser-polyfill.js"></script>
	<script src="itertools.min.js"></script>
	<script src="jquery.min.js"></script>
	<script src="d3.min.js" charset="utf-8"></script>
	<script src="topojson.min.js"></script>
	<link href="https://fonts.googleapis.com/css?family=Faster+One\|Frijole" rel="stylesheet">
	<script>
	function shuffle(array) {
	counter = array.length;

	// While there are elements in the array
	while (counter > 0) {
	// Pick a random index
	index = Math.floor(Math.random() * counter);

	// Decrease counter by 1
	counter--;

	// And swap the last element with it
	temp = array[counter];
	array[counter] = array[index];
	array[index] = temp;
	}

	return array;
	}

	var width = 960,
	height = 450;

	var svg = d3.select("body").append("svg")
	.attr("width", width)
	.attr("height", height);

	var projection = d3.geo.mercator()
	.center([148.5, -6.5])
	.scale(3000)
	.translate([width / 2, height / 2]);
	var path = d3.geo.path()
	.projection(projection);

	var airportMap = {};

	function transition(plane, route, percent) {
	var l = route.node().getTotalLength();
	plane.transition()
	.duration(4000)
	.attrTween("transform", delta(plane, route.node(), percent))
	.remove();
	return l*10;
	}

	function delta(plane, path, percent) {
	var l = path.getTotalLength();
	var plane = plane;
	return function(i) {
	return function(t) {
	var s = 5Math.min(Math.sin(Math.PI t) * 0.7, 0.3);

	if( t > percent) {
	var p = path.getPointAtLength(percent * l);
	var t2 = Math.min(t + 0.05, 1);
	var p2 = path.getPointAtLength(t2 * l);

	var x = p2.x - p.x;
	var y = p2.y - p.y;
	var r = 90 - Math.atan2(-y, x) * 180 / Math.PI + (t - percent)*360;
	} else {
	var p = path.getPointAtLength(t * l);
	var t2 = Math.min(t + 0.05, 1);
	var p2 = path.getPointAtLength(t2 * l);

	var x = p2.x - p.x;
	var y = p2.y - p.y;
	var r = 90 - Math.atan2(-y, x) * 180 / Math.PI;
	}

	return "translate(" + p.x + "," + p.y + ") scale(" + s + ") rotate(" + r + ")";
	}
	}
	}

	function fly(origin, destination, gender, percent) {
	var route = svg.append("path")
	.datum({type: "LineString", coordinates: [airportMap[origin], airportMap[destination]]})
	.attr("class", "route")
	.attr("d", path);

	var plane = svg.append("path")
	.attr("class", "plane " + gender)
	.attr("d", "m25.21488,3.93375c-0.44355,0 -0.84275,0.18332 -1.17933,0.51592c-0.33397,0.33267 -0.61055,0.80884 -0.84275,1.40377c-0.45922,1.18911 -0.74362,2.85964 -0.89755,4.86085c-0.15655,1.99729 -0.18263,4.32223 -0.11741,6.81118c-5.51835,2.26427 -16.7116,6.93857 -17.60916,7.98223c-1.19759,1.38937 -0.81143,2.98095 -0.32874,4.03902l18.39971,-3.74549c0.38616,4.88048 0.94192,9.7138 1.42461,13.50099c-1.80032,0.52703 -5.1609,1.56679 -5.85232,2.21255c-0.95496,0.88711 -0.95496,3.75718 -0.95496,3.75718l7.53,-0.61316c0.17743,1.23545 0.28701,1.95767 0.28701,1.95767l0.01304,0.06557l0.06002,0l0.13829,0l0.0574,0l0.01043,-0.06557c0,0 0.11218,-0.72222 0.28961,-1.95767l7.53164,0.61316c0,0 0,-2.87006 -0.95496,-3.75718c-0.69044,-0.64577 -4.05363,-1.68813 -5.85133,-2.21516c0.48009,-3.77545 1.03061,-8.58921 1.42198,-13.45404l18.18207,3.70115c0.48009,-1.05806 0.86881,-2.64965 -0.32617,-4.03902c-0.88969,-1.03062 -11.81147,-5.60054 -17.39409,-7.89352c0.06524,-2.52287 0.04175,-4.88024 -0.1148,-6.89989l0,-0.00476c-0.15655,-1.99844 -0.44094,-3.6683 -0.90277,-4.8561c-0.22699,-0.59493 -0.50356,-1.07111 -0.83754,-1.40377c-0.33658,-0.3326 -0.73578,-0.51592 -1.18194,-0.51592l0,0l-0.00001,0l0,0z");

	return transition(plane, route, percent);
	}

	var randomColor = (function(){
	var golden_ratio_conjugate = 0.618033988749895;
	var h = Math.random();

	var hslToRgb = function (h, s, l){
	var r, g, b;

	if(s == 0){
	r = g = b = l; // achromatic
	}else{
	function hue2rgb(p, q, t){
	if(t < 0) t += 1;
	if(t > 1) t -= 1;
	if(t < 1/6) return p + (q - p) * 6 * t;
	if(t < 1/2) return q;
	if(t < 2/3) return p + (q - p) * (2/3 - t) * 6;
	return p;
	}

	var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
	var p = 2 * l - q;
	r = hue2rgb(p, q, h + 1/3);
	g = hue2rgb(p, q, h);
	b = hue2rgb(p, q, h - 1/3);
	}

	return '#'+Math.round(r * 255).toString(16)+Math.round(g * 255).toString(16)+Math.round(b * 255).toString(16);
	};

	return function(){
	h += golden_ratio_conjugate;
	h %= 1;
	return hslToRgb(h, 0.5, 0.60);
	};
	})();


	d3.json("png.json", function(error, papua) {
	if (error) return console.error(error);
	var subunits = topojson.feature(papua, papua.objects.subunits);
	svg.append("path")
	.datum(subunits)
	.attr("d", path);
	svg.selectAll(".subunit")
	.data(topojson.feature(papua, papua.objects.subunits).features)
	.enter().append("path")
	.attr("class", function(d) { return "subunit " +d.properties.adm0_a3 + " " + d.id; })
	.attr("d", path)
	.style({fill: randomColor});
	svg.append("path")
	.datum(topojson.mesh(papua, papua.objects.subunits, function(a, b) { return a !== b && a.properties.adm0_a3 !== "IDN"; }))
	.attr("d", path)
	.attr("class", "subunit-boundary");
	svg.append("path")
	.datum(topojson.mesh(papua, papua.objects.subunits, function(a, b) { return a === b && a.properties.adm0_a3 === "IDN"; }))
	.attr("d", path)
	.attr("class", "subunit-boundary IDN");

	svg.append("path")
	.datum(topojson.feature(papua, papua.objects.places))
	.attr("d", path)
	.attr("class", "place");

	svg.selectAll(".place-label")
	.data(topojson.feature(papua, papua.objects.places).features)
	.enter().append("text")
	.attr("class", "place-label")
	.attr("transform", function(d) { return "translate(" + projection(d.geometry.coordinates) + ")"; })
	.attr("dy", ".15em")
	.text(function(d) { return d.properties.NAME; });

	svg.selectAll(".place-label")
	.attr("x", function(d) { return d.geometry.coordinates[0] > -1 ? 6 : -6; })
	.style("text-anchor", function(d) { return d.geometry.coordinates[0] > -1 ? "start" : "end"; });

	count = svg.append("text")
	.attr("class", "count")
	.attr("x", "450")
	.attr("y", "130")
	.style({fill: randomColor,
	"font-family": 'Faster One, cursive'})
	.text("0")

	var geos = topojson.feature(papua, papua.objects.places).features;
	for (i in geos) {
	airportMap[geos[i].properties.NAME] = geos[i].geometry.coordinates;
	}

	dests = topojson.feature(papua, papua.objects.places).features.map(function(d){return d.properties.NAME});

	});


	function handleClick(event){
	//cityGen = itertools.permutations(topojson.feature(papua, papua.objects.places).features.map(function(d){return d.properties.NAME}),2);
	//cityArray = shuffle(Array.from(cityGen)).slice(0,5);
	var costOfOneLeg = 150;
	var money = + document.getElementById("money").value;
	var gender = $('input[name="gender"]:checked').val();

	dests.splice(dests.indexOf("Port Moresby"), 1);
	dests.splice(dests.indexOf("Wewak"), 1);
	dests.splice(dests.indexOf("Mendi"), 1);

	cityArray = [];
	newDest = "Mendi";
	cityArray.push(["Port Moresby",newDest]);
	cityArray.push([newDest,"Wewak"]);
	cityArray.push(["Wewak", "Port Moresby"]);

	while( cityArray.length < money/costOfOneLeg ) {
	newDest = dests[Math.floor(Math.random()*dests.length)];
	dests.splice(dests.indexOf(newDest), 1);
	cityArray.push(["Port Moresby",newDest]);
	cityArray.push([newDest,"Wewak"]);
	cityArray.push(["Wewak", "Port Moresby"]);
	}

	var i = 0;
	fly(cityArray[i][0], cityArray[i][1], gender, money/costOfOneLeg - i );
	i++;
	intID = setInterval(function(){
	if (i <= money/costOfOneLeg) {
	count.text(i)
	.style({fill: randomColor})
	fly(cityArray[i][0], cityArray[i][1], gender, money/costOfOneLeg - i );
	i++;
	} else {
	clearInterval(intID)
	}
	}, 2000);

	return false;
	}
	/* JavaScript goes here. */

	</script>
	<br>
	<input name="Submit" type="submit" value="GO!" onclick="return handleClick()">
	<input type="text" id="money" placeholder="Money Raised…">
	<input type="radio" name="gender" value="boy"> Boys
	<input type="radio" name="gender" value="girl"> Girls
	<input type="radio" name="gender" value="both"> Together!
	Apache License
	Version 2.0, January 2004
	http://www.apache.org/licenses/

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	(function (global, factory) {
	typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
	typeof define === 'function' && define.amd ? define(['exports'], factory) :
	(factory((global.topojson = global.topojson \|\| {})));
	}(this, function (exports) { 'use strict';

	function noop() {}

	function transformAbsolute(transform) {
	if (!transform) return noop;
	var x0,
	y0,
	kx = transform.scale[0],
	ky = transform.scale[1],
	dx = transform.translate[0],
	dy = transform.translate[1];
	return function(point, i) {
	if (!i) x0 = y0 = 0;
	point[0] = (x0 += point[0]) * kx + dx;
	point[1] = (y0 += point[1]) * ky + dy;
	};
	}

	function transformRelative(transform) {
	if (!transform) return noop;
	var x0,
	y0,
	kx = transform.scale[0],
	ky = transform.scale[1],
	dx = transform.translate[0],
	dy = transform.translate[1];
	return function(point, i) {
	if (!i) x0 = y0 = 0;
	var x1 = Math.round((point[0] - dx) / kx),
	y1 = Math.round((point[1] - dy) / ky);
	point[0] = x1 - x0;
	point[1] = y1 - y0;
	x0 = x1;
	y0 = y1;
	};
	}

	function reverse(array, n) {
	var t, j = array.length, i = j - n;
	while (i < --j) t = array[i], array[i++] = array[j], array[j] = t;
	}

	function bisect(a, x) {
	var lo = 0, hi = a.length;
	while (lo < hi) {
	var mid = lo + hi >>> 1;
	if (a[mid] < x) lo = mid + 1;
	else hi = mid;
	}
	return lo;
	}

	function feature(topology, o) {
	return o.type === "GeometryCollection" ? {
	type: "FeatureCollection",
	features: o.geometries.map(function(o) { return feature$1(topology, o); })
	} : feature$1(topology, o);
	}

	function feature$1(topology, o) {
	var f = {
	type: "Feature",
	id: o.id,
	properties: o.properties \|\| {},
	geometry: object(topology, o)
	};
	if (o.id == null) delete f.id;
	return f;
	}

	function object(topology, o) {
	var absolute = transformAbsolute(topology.transform),
	arcs = topology.arcs;

	function arc(i, points) {
	if (points.length) points.pop();
	for (var a = arcs[i < 0 ? ~i : i], k = 0, n = a.length, p; k < n; ++k) {
	points.push(p = a[k].slice());
	absolute(p, k);
	}
	if (i < 0) reverse(points, n);
	}

	function point(p) {
	p = p.slice();
	absolute(p, 0);
	return p;
	}

	function line(arcs) {
	var points = [];
	for (var i = 0, n = arcs.length; i < n; ++i) arc(arcs[i], points);
	if (points.length < 2) points.push(points[0].slice());
	return points;
	}

	function ring(arcs) {
	var points = line(arcs);
	while (points.length < 4) points.push(points[0].slice());
	return points;
	}

	function polygon(arcs) {
	return arcs.map(ring);
	}

	function geometry(o) {
	var t = o.type;
	return t === "GeometryCollection" ? {type: t, geometries: o.geometries.map(geometry)}
	: t in geometryType ? {type: t, coordinates: geometryType[t](o)}
	: null;
	}

	var geometryType = {
	Point: function(o) { return point(o.coordinates); },
	MultiPoint: function(o) { return o.coordinates.map(point); },
	LineString: function(o) { return line(o.arcs); },
	MultiLineString: function(o) { return o.arcs.map(line); },
	Polygon: function(o) { return polygon(o.arcs); },
	MultiPolygon: function(o) { return o.arcs.map(polygon); }
	};

	return geometry(o);
	}

	function stitchArcs(topology, arcs) {
	var stitchedArcs = {},
	fragmentByStart = {},
	fragmentByEnd = {},
	fragments = [],
	emptyIndex = -1;

	// Stitch empty arcs first, since they may be subsumed by other arcs.
	arcs.forEach(function(i, j) {
	var arc = topology.arcs[i < 0 ? ~i : i], t;
	if (arc.length < 3 && !arc[1][0] && !arc[1][1]) {
	t = arcs[++emptyIndex], arcs[emptyIndex] = i, arcs[j] = t;
	}
	});

	arcs.forEach(function(i) {
	var e = ends(i),
	start = e[0],
	end = e[1],
	f, g;

	if (f = fragmentByEnd[start]) {
	delete fragmentByEnd[f.end];
	f.push(i);
	f.end = end;
	if (g = fragmentByStart[end]) {
	delete fragmentByStart[g.start];
	var fg = g === f ? f : f.concat(g);
	fragmentByStart[fg.start = f.start] = fragmentByEnd[fg.end = g.end] = fg;
	} else {
	fragmentByStart[f.start] = fragmentByEnd[f.end] = f;
	}
	} else if (f = fragmentByStart[end]) {
	delete fragmentByStart[f.start];
	f.unshift(i);
	f.start = start;
	if (g = fragmentByEnd[start]) {
	delete fragmentByEnd[g.end];
	var gf = g === f ? f : g.concat(f);
	fragmentByStart[gf.start = g.start] = fragmentByEnd[gf.end = f.end] = gf;
	} else {
	fragmentByStart[f.start] = fragmentByEnd[f.end] = f;
	}
	} else {
	f = [i];
	fragmentByStart[f.start = start] = fragmentByEnd[f.end = end] = f;
	}
	});

	function ends(i) {
	var arc = topology.arcs[i < 0 ? ~i : i], p0 = arc[0], p1;
	if (topology.transform) p1 = [0, 0], arc.forEach(function(dp) { p1[0] += dp[0], p1[1] += dp[1]; });
	else p1 = arc[arc.length - 1];
	return i < 0 ? [p1, p0] : [p0, p1];
	}

	function flush(fragmentByEnd, fragmentByStart) {
	for (var k in fragmentByEnd) {
	var f = fragmentByEnd[k];
	delete fragmentByStart[f.start];
	delete f.start;
	delete f.end;
	f.forEach(function(i) { stitchedArcs[i < 0 ? ~i : i] = 1; });
	fragments.push(f);
	}
	}

	flush(fragmentByEnd, fragmentByStart);
	flush(fragmentByStart, fragmentByEnd);
	arcs.forEach(function(i) { if (!stitchedArcs[i < 0 ? ~i : i]) fragments.push([i]); });

	return fragments;
	}

	function mesh(topology) {
	return object(topology, meshArcs.apply(this, arguments));
	}

	function meshArcs(topology, o, filter) {
	var arcs = [];

	function arc(i) {
	var j = i < 0 ? ~i : i;
	(geomsByArc[j] \|\| (geomsByArc[j] = [])).push({i: i, g: geom});
	}

	function line(arcs) {
	arcs.forEach(arc);
	}

	function polygon(arcs) {
	arcs.forEach(line);
	}

	function geometry(o) {
	if (o.type === "GeometryCollection") o.geometries.forEach(geometry);
	else if (o.type in geometryType) geom = o, geometryType[o.type](o.arcs);
	}

	if (arguments.length > 1) {
	var geomsByArc = [],
	geom;

	var geometryType = {
	LineString: line,
	MultiLineString: polygon,
	Polygon: polygon,
	MultiPolygon: function(arcs) { arcs.forEach(polygon); }
	};

	geometry(o);

	geomsByArc.forEach(arguments.length < 3
	? function(geoms) { arcs.push(geoms[0].i); }
	: function(geoms) { if (filter(geoms[0].g, geoms[geoms.length - 1].g)) arcs.push(geoms[0].i); });
	} else {
	for (var i = 0, n = topology.arcs.length; i < n; ++i) arcs.push(i);
	}

	return {type: "MultiLineString", arcs: stitchArcs(topology, arcs)};
	}

	function cartesianTriangleArea(triangle) {
	var a = triangle[0], b = triangle[1], c = triangle[2];
	return Math.abs((a[0] - c[0]) * (b[1] - a[1]) - (a[0] - b[0]) * (c[1] - a[1]));
	}

	function ring(ring) {
	var i = -1,
	n = ring.length,
	a,
	b = ring[n - 1],
	area = 0;

	while (++i < n) {
	a = b;
	b = ring[i];
	area += a[0] * b[1] - a[1] * b[0];
	}

	return area / 2;
	}

	function merge(topology) {
	return object(topology, mergeArcs.apply(this, arguments));
	}

	function mergeArcs(topology, objects) {
	var polygonsByArc = {},
	polygons = [],
	components = [];

	objects.forEach(function(o) {
	if (o.type === "Polygon") register(o.arcs);
	else if (o.type === "MultiPolygon") o.arcs.forEach(register);
	});

	function register(polygon) {
	polygon.forEach(function(ring$$) {
	ring$$.forEach(function(arc) {
	(polygonsByArc[arc = arc < 0 ? ~arc : arc] \|\| (polygonsByArc[arc] = [])).push(polygon);
	});
	});
	polygons.push(polygon);
	}

	function area(ring$$) {
	return Math.abs(ring(object(topology, {type: "Polygon", arcs: [ring$$]}).coordinates[0]));
	}

	polygons.forEach(function(polygon) {
	if (!polygon._) {
	var component = [],
	neighbors = [polygon];
	polygon._ = 1;
	components.push(component);
	while (polygon = neighbors.pop()) {
	component.push(polygon);
	polygon.forEach(function(ring$$) {
	ring$$.forEach(function(arc) {
	polygonsByArc[arc < 0 ? ~arc : arc].forEach(function(polygon) {
	if (!polygon._) {
	polygon._ = 1;
	neighbors.push(polygon);
	}
	});
	});
	});
	}
	}
	});

	polygons.forEach(function(polygon) {
	delete polygon._;
	});

	return {
	type: "MultiPolygon",
	arcs: components.map(function(polygons) {
	var arcs = [], n;

	// Extract the exterior (unique) arcs.
	polygons.forEach(function(polygon) {
	polygon.forEach(function(ring$$) {
	ring$$.forEach(function(arc) {
	if (polygonsByArc[arc < 0 ? ~arc : arc].length < 2) {
	arcs.push(arc);
	}
	});
	});
	});

	// Stitch the arcs into one or more rings.
	arcs = stitchArcs(topology, arcs);

	// If more than one ring is returned,
	// at most one of these rings can be the exterior;
	// choose the one with the greatest absolute area.
	if ((n = arcs.length) > 1) {
	for (var i = 1, k = area(arcs[0]), ki, t; i < n; ++i) {
	if ((ki = area(arcs[i])) > k) {
	t = arcs[0], arcs[0] = arcs[i], arcs[i] = t, k = ki;
	}
	}
	}

	return arcs;
	})
	};
	}

	function neighbors(objects) {
	var indexesByArc = {}, // arc index -> array of object indexes
	neighbors = objects.map(function() { return []; });

	function line(arcs, i) {
	arcs.forEach(function(a) {
	if (a < 0) a = ~a;
	var o = indexesByArc[a];
	if (o) o.push(i);
	else indexesByArc[a] = [i];
	});
	}

	function polygon(arcs, i) {
	arcs.forEach(function(arc) { line(arc, i); });
	}

	function geometry(o, i) {
	if (o.type === "GeometryCollection") o.geometries.forEach(function(o) { geometry(o, i); });
	else if (o.type in geometryType) geometryType[o.type](o.arcs, i);
	}

	var geometryType = {
	LineString: line,
	MultiLineString: polygon,
	Polygon: polygon,
	MultiPolygon: function(arcs, i) { arcs.forEach(function(arc) { polygon(arc, i); }); }
	};

	objects.forEach(geometry);

	for (var i in indexesByArc) {
	for (var indexes = indexesByArc[i], m = indexes.length, j = 0; j < m; ++j) {
	for (var k = j + 1; k < m; ++k) {
	var ij = indexes[j], ik = indexes[k], n;
	if ((n = neighbors[ij])[i = bisect(n, ik)] !== ik) n.splice(i, 0, ik);
	if ((n = neighbors[ik])[i = bisect(n, ij)] !== ij) n.splice(i, 0, ij);
	}
	}
	}

	return neighbors;
	}

	function compareArea(a, b) {
	return a[1][2] - b[1][2];
	}

	function minAreaHeap() {
	var heap = {},
	array = [],
	size = 0;

	heap.push = function(object) {
	up(array[object._ = size] = object, size++);
	return size;
	};

	heap.pop = function() {
	if (size <= 0) return;
	var removed = array[0], object;
	if (--size > 0) object = array[size], down(array[object._ = 0] = object, 0);
	return removed;
	};

	heap.remove = function(removed) {
	var i = removed._, object;
	if (array[i] !== removed) return; // invalid request
	if (i !== --size) object = array[size], (compareArea(object, removed) < 0 ? up : down)(array[object._ = i] = object, i);
	return i;
	};

	function up(object, i) {
	while (i > 0) {
	var j = ((i + 1) >> 1) - 1,
	parent = array[j];
	if (compareArea(object, parent) >= 0) break;
	array[parent._ = i] = parent;
	array[object._ = i = j] = object;
	}
	}

	function down(object, i) {
	while (true) {
	var r = (i + 1) << 1,
	l = r - 1,
	j = i,
	child = array[j];
	if (l < size && compareArea(array[l], child) < 0) child = array[j = l];
	if (r < size && compareArea(array[r], child) < 0) child = array[j = r];
	if (j === i) break;
	array[child._ = i] = child;
	array[object._ = i = j] = object;
	}
	}

	return heap;
	}

	function presimplify(topology, triangleArea) {
	var absolute = transformAbsolute(topology.transform),
	relative = transformRelative(topology.transform),
	heap = minAreaHeap();

	if (!triangleArea) triangleArea = cartesianTriangleArea;

	topology.arcs.forEach(function(arc) {
	var triangles = [],
	maxArea = 0,
	triangle,
	i,
	n,
	p;

	// To store each point’s effective area, we create a new array rather than
	// extending the passed-in point to workaround a Chrome/V8 bug (getting
	// stuck in smi mode). For midpoints, the initial effective area of
	// Infinity will be computed in the next step.
	for (i = 0, n = arc.length; i < n; ++i) {
	p = arc[i];
	absolute(arc[i] = [p[0], p[1], Infinity], i);
	}

	for (i = 1, n = arc.length - 1; i < n; ++i) {
	triangle = arc.slice(i - 1, i + 2);
	triangle[1][2] = triangleArea(triangle);
	triangles.push(triangle);
	heap.push(triangle);
	}

	for (i = 0, n = triangles.length; i < n; ++i) {
	triangle = triangles[i];
	triangle.previous = triangles[i - 1];
	triangle.next = triangles[i + 1];
	}

	while (triangle = heap.pop()) {
	var previous = triangle.previous,
	next = triangle.next;

	// If the area of the current point is less than that of the previous point
	// to be eliminated, use the latter's area instead. This ensures that the
	// current point cannot be eliminated without eliminating previously-
	// eliminated points.
	if (triangle[1][2] < maxArea) triangle[1][2] = maxArea;
	else maxArea = triangle[1][2];

	if (previous) {
	previous.next = next;
	previous[2] = triangle[2];
	update(previous);
	}

	if (next) {
	next.previous = previous;
	next[0] = triangle[0];
	update(next);
	}
	}

	arc.forEach(relative);
	});

	function update(triangle) {
	heap.remove(triangle);
	triangle[1][2] = triangleArea(triangle);
	heap.push(triangle);
	}

	return topology;
	}

	var version = "1.6.26";

	exports.version = version;
	exports.mesh = mesh;
	exports.meshArcs = meshArcs;
	exports.merge = merge;
	exports.mergeArcs = mergeArcs;
	exports.feature = feature;
	exports.neighbors = neighbors;
	exports.presimplify = presimplify;

	}));