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Holiday Tree

  1. Enter your full name in the text box and press Render Tree.
  2. Based on your name, a unique, force-directed graph will be generated. While the structure will always be the same, the position of the nodes may (slightly) differ every time.
  3. After render, you may make adjustments by dragging nodes around.
  4. Right-click on the tree and choose View as PNG.
  5. Right-click again and save your holiday tree.

Enjoy! Happy Holidays from ZingChart!

<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <title>ZingChart Demo: Xmas Tree</title>
  <script src="https://cdn.zingchart.com/zingchart.min.js"></script>
  <style>
    .zc-body {
      margin: 10px;
      padding: 10px;
      background: #fbfbfb;
    }

    .zc-info {
      margin-bottom: 10px;
      border-bottom: 1px solid #ccc;
    }

    .zc-info ol {
      margin: 0 0 22px;
      padding: 0 0 0 1rem;
      font-size: 14px;
    }

    .zc-info p {
      color: #dc1257;
    }

    .zc-controls {
      padding: 5px 0;
    }

    .zc-controls input {
      height: 40px;
      border: 1px solid #ebebeb;
      border-radius: 4px;
      box-sizing: border-box;
      font-size: 1rem;
      padding: 0 10px;
    }

    .zc-controls input:focus {
      font-size: 1rem;
    }

    .zc-controls button {
      color: #fff;
      background: #073c4e;
      border: 1px solid #ebebeb;
      border-radius: 4px;
      cursor: pointer;
      font-size: .8125rem;
      padding: 0 10px;
      height: 40px;
    }

    .zc-controls button[disabled] {
      cursor: not-allowed;
    }
  </style>
</head>

<body class="zc-body">

  <div class="zc-info">
    <ol>
      <li>Enter your full name in the text box and press <strong>Render Tree</strong>.</li>
      <li>Based on your name, a unique, force-directed graph will be generated. While the structure will always be the same, the position of the nodes may (slightly) differ every time.</li>
      <li>After render, you may make adjustments by dragging nodes around.</li>
      <li>Right-click on the tree and choose <strong>View as PNG</strong>.</li>
      <li>Right-click again and save your holiday tree.</li>
    </ol>
    <p>Enjoy! Happy Holidays from ZingChart!</p>
  </div>

  <div class="zc-controls">
    <input type="text" id="renderInput" placeholder="Your full name here" value="world">
    <button id="renderBtn">Render Tree</button>
  </div>

  <div id="myChart"></div>

  <script>
    ZC.LICENSE = ["569d52cefae586f634c54f86dc99e6a9", "b55b025e438fa8a98e32482b5f768ff5"];
    // INIT
    // -----------------------------
    // Define Module Location
    zingchart.MODULESDIR = "https://cdn.zingchart.com/modules/";
    ZC.LICENSE = ["bab21d016b2dadc18447d2a055f061e3"];

    // DEFINE CHART
    // -----------------------------
    // Main chart render location
    var chartId = 'myChart';

    // DOM ELEMENTS
    // -----------------------------
    var renderBtn = document.querySelector('#renderBtn');
    var renderInput = document.querySelector('#renderInput');


    // RENDER BUTTON EVENTS
    // -----------------------------
    renderBtn.addEventListener('click', renderChart);


    // HELPER FNS
    // -----------------------------

    // Render Chart
    function renderChart() {
      // Disable render button
      renderBtn.setAttribute('disabled', 'disabled')

      // Define constants
      var W = '100%';
      var H = 560;
      var COLORS = [
        '#99ccff #336699',
        '#6CB359 #0F4800',
        '#9A5E9A #430443',
        '#FFA153 #AC4E00',
        '#FF653D #A62300',
        '#57B8C6 #095B67',
        '#FFE66D #AF930B',
        '#EF668F #9D0A36'
      ];
      var SEQ = 0;
      var COLORSEQ = 0;
      var NAME = renderInput.value.trim() || 'Santa Claus';
      var TICK = null;

      // Define data
      var CDATA = {
        type: 'tree',
        title: {
          color: '#333333',
          padding: 25,
          text: 'Hello ' + NAME + ', here\'s your holiday tree',
          fontSize: 17
        },
        images: [{
            src: 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/374756/xmas0.png',
            visible: false
          },
          {
            src: 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/374756/xmas1.png',
            visible: false
          },
          {
            src: 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/374756/xmas2.png',
            visible: false
          },
          {
            src: 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/374756/xmas3.png',
            visible: false
          },
          {
            src: 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/374756/xmas4.png',
            visible: false
          },
          {
            src: 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/374756/xmas5.png',
            visible: false
          },
          {
            src: 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/374756/xmas6.png',
            visible: false
          },
          {
            src: 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/374756/xmas7.png',
            visible: false
          },
          {
            src: 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/374756/xmas8.png',
            visible: false
          },
          {
            src: 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/374756/xmas9.png',
            visible: false
          }
        ],
        shapes: [],
        source: {
          fontSize: 12,
          margin: 'auto 25 25 25',
          text: 'Happy Holidays from ZingChart!'
        },
        plotarea: {
          margin: '60 40 40 60'
        },
        options: {
          aspect: 'graph',
          textAttr: 'id',
          minSize: 16,
          maxSize: 16,
          minLinkWidth: 1,
          maxLinkWidth: 1,
          springLength: 35,
          attractionConstant: 0.1,
          repulsionConstant: 400,
          repulsionDistanceFactor: 5,
          weightedNodes: 1,
          weightedLinks: 1,
          node: {
            backgroundRepeat: 'no-repeat',
            backgroundColor: 'none',
            backgroundPosition: '45% 45%',
            borderWidth: 0,
            fillType: 'radial',
            fillOffsetX: -5,
            fillOffsetY: -5,
            label: {
              visible: false
            },
            tooltip: {
              visible: false
            }
          },
          link: {
            lineColor: '#000000'
          }
        },
        series: []
      };

      // Build layout
      var rows = Math.round(H / 20);
      var cols = Math.round(W / 20);
      var iCharCode;
      for (var row = 0; row < rows; row++) {
        iCharCode = NAME.charCodeAt(row % NAME.length);
        CDATA.shapes.push({
          type: 'star5',
          flat: true,
          backgroundColor: COLORS[iCharCode % COLORS.length],
          size: 4 + iCharCode % 4,
          x: 10,
          y: 10 + row * 20
        }, {
          type: 'star5',
          flat: true,
          backgroundColor: COLORS[iCharCode % COLORS.length],
          size: 4 + iCharCode % 4,
          x: W - 10,
          y: 10 + row * 20
        });
      }
      for (var col = 1; col < cols - 1; col++) {
        iCharCode = NAME.charCodeAt(col % NAME.length);
        CDATA.shapes.push({
          type: 'star5',
          flat: true,
          backgroundColor: COLORS[iCharCode % COLORS.length],
          size: 4 + iCharCode % 4,
          x: 10 + col * 20,
          y: 10
        }, {
          type: 'star5',
          flat: true,
          backgroundColor: COLORS[iCharCode % COLORS.length],
          size: 4 + iCharCode % 4,
          x: 10 + col * 20,
          y: H - 10
        });
      }

      // Render the chart
      zingchart.render({
        id: chartId,
        width: W,
        height: H,
        output: 'canvas',
        data: CDATA,
        events: {
          load: function() {
            TICK = window.setInterval(fnStep, 150);
          }
        }
      });

      function fnStep() {
        var i, sSource, sTarget, aPairs, oLink;
        var iCharCode = NAME.charCodeAt((SEQ + COLORSEQ) % NAME.length);
        var iColorCharCode = NAME.charCodeAt(COLORSEQ % NAME.length);
        // get data from graph
        var aData = zingchart.exec(chartId, 'tree.getdata') || [];
        // count links for each node
        var oNodesLinks = {},
          aNodesIds = [],
          aLinksIds = [];
        for (i = 0; i < aData.length; i++) {
          if (aData[i].type === 'link') {
            oNodesLinks[aData[i].source] = ++oNodesLinks[aData[i].source] || 1;
            oNodesLinks[aData[i].target] = ++oNodesLinks[aData[i].target] || 1;
            aLinksIds.push(aData[i].source + '-' + aData[i].target);
            aLinksIds.push(aData[i].target + '-' + aData[i].source);
          } else if (aData[i].type === 'node') {
            aNodesIds.push(aData[i].id);
          }
        }

        // remove all nodes with no links
        if (aNodesIds.length > 2) {
          for (i = 0; i < aNodesIds.length; i++) {
            if (!oNodesLinks[aNodesIds[i]]) {
              zingchart.exec(chartId, 'tree.removenode', {
                id: aNodesIds[i]
              });
            }
          }
        }

        // from time to time remove oldest leaves
        if (SEQ % 5 === 0 && aNodesIds.length > 5) {
          for (i = 0; i < aNodesIds.length; i++) {
            if (oNodesLinks[aNodesIds[i]] === 1) {
              zingchart.exec(chartId, 'tree.removenode', {
                id: aNodesIds[i]
              });
              SEQ++;
              return;
            }
          }
        }

        // from time to time remove nodes with too many links 
        if (SEQ % 13 === 0 && aNodesIds.length > 5) {
          for (i = 0; i < aNodesIds.length; i++) {
            if (oNodesLinks[aNodesIds[i]] > 3) {
              zingchart.exec(chartId, 'tree.removenode', {
                id: aNodesIds[i]
              });
              SEQ++;
              return;
            }
          }
        }

        // from time to time just create a link between existing nodes
        if (SEQ % 7 === 0 && aNodesIds.length > 3) {
          aPairs = [];
          for (i = 0; i < aNodesIds.length; i++) {
            if (oNodesLinks[aNodesIds[i]] === 1) {
              aPairs.push(aNodesIds[i]);
              if (aPairs.length === 2) {
                oLink = {
                  source: aPairs[0],
                  target: aPairs[1],
                  value: 1 + iCharCode % 2
                };
                zingchart.exec(chartId, 'tree.addlink', {
                  data: oLink,
                  update: true
                });
                SEQ++;
                return;
              }
            }
          }
        }

        // otherwise, create a new node
        sTarget = 'n' + SEQ;
        oNode = {
          id: sTarget,
          text: sTarget,
          value: 1,
          style: {
            backgroundImage: 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/374756/xmas' + (SEQ % 10) + '.png',
            backgroundColor: COLORS[iColorCharCode % COLORS.length]
          }
        };
        COLORSEQ++;
        zingchart.exec(chartId, 'tree.addnode', {
          data: oNode,
          update: (aNodesIds.length === 0)
        });
        if (aNodesIds.length > 0) {
          sSource = aNodesIds[iCharCode % aNodesIds.length];
          oLink = {
            source: sSource,
            target: sTarget,
            value: 1 + iCharCode % 2
          };
          zingchart.exec(chartId, 'tree.addlink', {
            data: oLink,
            update: (aNodesIds.length > 0)
          });
        }
        SEQ++;
        if (SEQ > 99) {
          window.clearInterval(TICK);
          renderBtn.removeAttribute('disabled');
        }
      };
    }

    window.addEventListener('load', function() {
      renderChart();
    });
  </script>
</body>

</html>
<!DOCTYPE html>
<html>
	<head>
    <meta charset="utf-8">
    <title>ZingChart Demo: Xmas Tree</title>
		<script src="https://cdn.zingchart.com/zingchart.min.js"></script>
  </head>
	<body class="zc-body">

    <div class="zc-info">
      <ol>
        <li>Enter your full name in the text box and press <strong>Render Tree</strong>.</li>
        <li>Based on your name, a unique, force-directed graph will be generated. While the structure will always be the same, the position of the nodes may (slightly) differ every time.</li>
        <li>After render, you may make adjustments by dragging nodes around.</li>
        <li>Right-click on the tree and choose <strong>View as PNG</strong>.</li>
        <li>Right-click again and save your holiday tree.</li>
      </ol>
      <p>Enjoy! Happy Holidays from ZingChart!</p>
    </div>

    <div class="zc-controls">
      <input type="text" id="renderInput" placeholder="Your full name here" value="world">
      <button id="renderBtn">Render Tree</button>
    </div>

    <div id="myChart"></div>

  </body>
</html>
// INIT
// -----------------------------
// Define Module Location
zingchart.MODULESDIR = "https://cdn.zingchart.com/modules/";
ZC.LICENSE = ["bab21d016b2dadc18447d2a055f061e3"];

// DEFINE CHART
// -----------------------------
// Main chart render location
var chartId = 'myChart';

// DOM ELEMENTS
// -----------------------------
var renderBtn = document.querySelector('#renderBtn');
var renderInput = document.querySelector('#renderInput');


// RENDER BUTTON EVENTS
// -----------------------------
renderBtn.addEventListener('click', renderChart);


// HELPER FNS
// -----------------------------

// Render Chart
function renderChart() {
  // Disable render button
  renderBtn.setAttribute('disabled', 'disabled')
  
  // Define constants
  var W = '100%';
  var H = 560;
  var COLORS = [
    '#99ccff #336699',
    '#6CB359 #0F4800',
    '#9A5E9A #430443',
    '#FFA153 #AC4E00',
    '#FF653D #A62300',
    '#57B8C6 #095B67',
    '#FFE66D #AF930B',
    '#EF668F #9D0A36'
  ];
  var SEQ = 0;
  var COLORSEQ = 0;
  var NAME = renderInput.value.trim() || 'Santa Claus';
  var TICK = null;
  
  // Define data
  var CDATA = {
    type: 'tree',
    title: {
      color: '#333333',
      padding: 25,
      text: 'Hello ' + NAME + ', here\'s your holiday tree',
      fontSize: 17
    },
    images: [
      { src: 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/374756/xmas0.png', visible: false },
      { src: 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/374756/xmas1.png', visible: false },
      { src: 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/374756/xmas2.png', visible: false },
      { src: 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/374756/xmas3.png', visible: false },
      { src: 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/374756/xmas4.png', visible: false },
      { src: 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/374756/xmas5.png', visible: false },
      { src: 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/374756/xmas6.png', visible: false },
      { src: 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/374756/xmas7.png', visible: false },
      { src: 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/374756/xmas8.png', visible: false },
      { src: 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/374756/xmas9.png', visible: false }
    ],
    shapes: [],
    source: {
      fontSize: 12,
      margin: 'auto 25 25 25',
      text: 'Happy Holidays from ZingChart!'
    },
    plotarea: {
      margin: '60 40 40 60'
    },
    options: {
      aspect: 'graph',
      textAttr: 'id',
      minSize: 16,
      maxSize: 16,
      minLinkWidth: 1,
      maxLinkWidth: 1,
      springLength: 35,
      attractionConstant: 0.1,
      repulsionConstant: 400,
      repulsionDistanceFactor: 5,
      weightedNodes: 1,
      weightedLinks: 1,
      node: {
        backgroundRepeat: 'no-repeat',
        backgroundColor: 'none',
        backgroundPosition: '45% 45%',
        borderWidth: 0,
        fillType: 'radial',
        fillOffsetX: -5,
        fillOffsetY: -5,
        label: {
          visible: false    
        },
        tooltip: {
          visible: false    
        }
      },
      link: {
        lineColor: '#000000'    
      }
    },
    series: []
  };
  
  // Build layout
  var rows = Math.round(H / 20);
  var cols = Math.round(W / 20);
  var iCharCode;
  for (var row=0;row<rows;row++) {
    iCharCode = NAME.charCodeAt(row%NAME.length);
    CDATA.shapes.push({
      type: 'star5',
      flat: true,
      backgroundColor: COLORS[iCharCode%COLORS.length],
      size: 4 + iCharCode%4,
      x: 10,
      y: 10 + row * 20
    }, {
      type: 'star5',
      flat: true,
      backgroundColor: COLORS[iCharCode%COLORS.length],
      size: 4 + iCharCode%4,
      x: W - 10,
      y: 10 + row * 20
    });
  }
  for (var col=1;col<cols-1;col++) {
    iCharCode = NAME.charCodeAt(col%NAME.length);
    CDATA.shapes.push({
      type: 'star5',
      flat: true,
      backgroundColor: COLORS[iCharCode%COLORS.length],
      size: 4 + iCharCode%4,
      x: 10 + col * 20,
      y: 10
    }, {
      type: 'star5',
      flat: true,
      backgroundColor: COLORS[iCharCode%COLORS.length],
      size: 4 + iCharCode%4,
      x: 10 + col * 20,
      y: H - 10
    });
  }
  
  // Render the chart
  zingchart.render({
    id: chartId,
    width: W,
    height: H,
    output: 'canvas',
    data: CDATA,
      events: {
        load: function() {
          TICK = window.setInterval(fnStep, 150);
        }
      }
  });
  
  function fnStep() {
    var i, sSource, sTarget, aPairs, oLink;
    var iCharCode = NAME.charCodeAt((SEQ+COLORSEQ)%NAME.length);
    var iColorCharCode = NAME.charCodeAt(COLORSEQ%NAME.length);
    // get data from graph
    var aData = zingchart.exec(chartId, 'tree.getdata') || [];
    // count links for each node
    var oNodesLinks = {}, aNodesIds = [], aLinksIds = [];
    for (i=0;i<aData.length;i++) {
      if (aData[i].type === 'link') {
        oNodesLinks[aData[i].source] = ++oNodesLinks[aData[i].source] || 1;
        oNodesLinks[aData[i].target] = ++oNodesLinks[aData[i].target] || 1;
        aLinksIds.push(aData[i].source + '-' + aData[i].target);
        aLinksIds.push(aData[i].target + '-' + aData[i].source);
      } 
      else if (aData[i].type === 'node') {
        aNodesIds.push(aData[i].id);
      }
    }

    // remove all nodes with no links
    if (aNodesIds.length > 2) {
      for (i=0;i<aNodesIds.length;i++) {
        if (!oNodesLinks[aNodesIds[i]]) {
          zingchart.exec(chartId, 'tree.removenode', {
            id: aNodesIds[i]
          });
        }
      }
    }

    // from time to time remove oldest leaves
    if (SEQ%5 === 0 && aNodesIds.length > 5) {
      for (i=0;i<aNodesIds.length;i++) {
        if (oNodesLinks[aNodesIds[i]] === 1) {
          zingchart.exec(chartId, 'tree.removenode', {
            id: aNodesIds[i]
          });
          SEQ++;
          return;
        }
      }
    }

    // from time to time remove nodes with too many links 
    if (SEQ%13 === 0 && aNodesIds.length > 5) {
      for (i=0;i<aNodesIds.length;i++) {
        if (oNodesLinks[aNodesIds[i]] > 3) {
          zingchart.exec(chartId, 'tree.removenode', {
            id: aNodesIds[i]
          });
          SEQ++;
          return;
        }
      }
    }

    // from time to time just create a link between existing nodes
    if (SEQ%7 === 0 && aNodesIds.length > 3) {
      aPairs = [];
      for (i=0;i<aNodesIds.length;i++) {
        if (oNodesLinks[aNodesIds[i]] === 1) {
          aPairs.push(aNodesIds[i]);
          if (aPairs.length === 2) {
            oLink = {
              source: aPairs[0],
              target: aPairs[1],
              value: 1 + iCharCode%2
            };
            zingchart.exec(chartId, 'tree.addlink', {
              data: oLink,
              update: true
            });
            SEQ++;
            return;
          }
        }
      }
    }
    
    // otherwise, create a new node
    sTarget = 'n' + SEQ;
    oNode = {
      id: sTarget, 
      text: sTarget,
      value: 1,
      style: {
        backgroundImage: 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/374756/xmas' + (SEQ%10) + '.png',            
        backgroundColor: COLORS[iColorCharCode%COLORS.length]
      }
    };
    COLORSEQ++;
    zingchart.exec(chartId, 'tree.addnode', {
      data: oNode,
      update: (aNodesIds.length === 0)
    });
    if (aNodesIds.length > 0) {
      sSource = aNodesIds[iCharCode%aNodesIds.length];
      oLink = {
        source: sSource,
        target: sTarget,
        value: 1 + iCharCode%2
      };
      zingchart.exec(chartId, 'tree.addlink', {
        data: oLink,
        update: (aNodesIds.length > 0)
      });
    }
    SEQ++;
    if (SEQ > 99) {
      window.clearInterval(TICK);
      renderBtn.removeAttribute('disabled');
    }
  };
}

window.addEventListener('load', function() {
  renderChart();
});
.zc-body { 
  margin:10px;
  padding:10px; 
  background: #fbfbfb;
}

.zc-info {
  margin-bottom: 10px;
  border-bottom: 1px solid #ccc;
}

.zc-info ol {
  margin: 0 0 22px;
  padding: 0 0 0 1rem;
  font-size: 14px;
}
.zc-info p {
  color: #dc1257;
}

.zc-controls {
  padding: 5px 0;
}

.zc-controls input {
  height: 40px;
  border: 1px solid #ebebeb;
  border-radius: 4px;
  box-sizing: border-box;
  font-size: 1rem;
  padding:0 10px;
}
.zc-controls input:focus {
  font-size: 1rem;
}

.zc-controls button {
  color: #fff;
  background: #073c4e;
  border: 1px solid #ebebeb;
  border-radius: 4px;
  cursor: pointer;
  font-size: .8125rem;
  padding:0 10px;
  height: 40px;
}
.zc-controls button[disabled] {
  cursor: not-allowed;
}
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