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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 nonce="undefined" 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/";

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

    // DOM ELEMENTS
    // -----------------------------
    let renderBtn = document.querySelector('#renderBtn');
    let 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
      const COLORS = [
        '#99ccff #336699',
        '#6CB359 #0F4800',
        '#9A5E9A #430443',
        '#FFA153 #AC4E00',
        '#FF653D #A62300',
        '#57B8C6 #095B67',
        '#FFE66D #AF930B',
        '#EF668F #9D0A36'
      ];
      const NAME = renderInput.value.trim() || 'Santa Claus';
      let width = '100%';
      let height = 560;
      let colorSequence = 0;
      let sequence = 0;
      let tick = null;

      // Define data
      let chartConfig = {
        type: 'tree',
        title: {
          text: 'Hello ' + NAME + ', here\'s your holiday tree',
          color: '#333333',
          fontSize: '17px',
          padding: '25px'
        },
        options: {
          aspect: 'graph',
          attractionConstant: 0.1,
          minSize: '16px',
          maxSize: '16px',
          minLinkWidth: '1px',
          maxLinkWidth: '1px',
          repulsionConstant: 400,
          repulsionDistanceFactor: 5,
          springLength: '35px',
          textAttr: 'id',
          weightedLinks: 1,
          weightedNodes: 1,
          link: {
            lineColor: '#000000'
          },
          node: {
            backgroundColor: 'none',
            backgroundPosition: '45% 45%',
            backgroundRepeat: 'no-repeat',
            borderWidth: 0,
            fillOffsetX: '-5px',
            fillOffsetY: '-5px',
            fillType: 'radial',
            label: {
              visible: false
            },
            tooltip: {
              visible: false
            }
          }
        },
        plotarea: {
          margin: '60px 40px 40px 60px'
        },
        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: '12px',
          margin: 'auto 25px 25px 25px',
          text: 'Happy Holidays from ZingChart!'
        },
        series: []
      };

      // Build layout
      let rows = Math.round(height / 20);
      let cols = Math.round(width / 20);
      let iCharCode;
      for (let row = 0; row < rows; row++) {
        iCharCode = NAME.charCodeAt(row % NAME.length);
        chartConfig.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: width - 10,
          y: 10 + row * 20
        });
      }
      for (let col = 1; col < cols - 1; col++) {
        iCharCode = NAME.charCodeAt(col % NAME.length);
        chartConfig.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: height - 10
        });
      }

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

      function fnStep() {
        let i, sSource, sTarget, aPairs, oLink;
        let iCharCode = NAME.charCodeAt((sequence + colorSequence) % NAME.length);
        let iColorCharCode = NAME.charCodeAt(colorSequence % NAME.length);
        // get data from graph
        let aData = zingchart.exec(chartId, 'tree.getdata') || [];
        // count links for each node
        let 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 (sequence % 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]
              });
              sequence++;
              return;
            }
          }
        }

        // from time to time remove nodes with too many links
        if (sequence % 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]
              });
              sequence++;
              return;
            }
          }
        }

        // from time to time just create a link between existing nodes
        if (sequence % 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
                });
                sequence++;
                return;
              }
            }
          }
        }

        // otherwise, create a new node
        sTarget = 'n' + sequence;
        oNode = {
          id: sTarget,
          text: sTarget,
          value: 1,
          style: {
            backgroundImage: 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/374756/xmas' + (sequence % 10) + '.png',
            backgroundColor: COLORS[iColorCharCode % COLORS.length]
          }
        };
        colorSequence++;
        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)
          });
        }
        sequence++;
        if (sequence > 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/";

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

// DOM ELEMENTS
// -----------------------------
let renderBtn = document.querySelector('#renderBtn');
let 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
  const COLORS = [
    '#99ccff #336699',
    '#6CB359 #0F4800',
    '#9A5E9A #430443',
    '#FFA153 #AC4E00',
    '#FF653D #A62300',
    '#57B8C6 #095B67',
    '#FFE66D #AF930B',
    '#EF668F #9D0A36'
  ];
  const NAME = renderInput.value.trim() || 'Santa Claus';
  let width = '100%';
  let height = 560;
  let colorSequence = 0;
  let sequence = 0;
  let tick = null;

  // Define data
  let chartConfig = {
    type: 'tree',
    title: {
      text: 'Hello ' + NAME + ', here\'s your holiday tree',
      color: '#333333',
      fontSize: '17px',
      padding: '25px'
    },
    options: {
      aspect: 'graph',
      attractionConstant: 0.1,
      minSize: '16px',
      maxSize: '16px',
      minLinkWidth: '1px',
      maxLinkWidth: '1px',
      repulsionConstant: 400,
      repulsionDistanceFactor: 5,
      springLength: '35px',
      textAttr: 'id',
      weightedLinks: 1,
      weightedNodes: 1,
      link: {
        lineColor: '#000000'
      },
      node: {
        backgroundColor: 'none',
        backgroundPosition: '45% 45%',
        backgroundRepeat: 'no-repeat',
        borderWidth: 0,
        fillOffsetX: '-5px',
        fillOffsetY: '-5px',
        fillType: 'radial',
        label: {
          visible: false
        },
        tooltip: {
          visible: false
        }
      }
    },
    plotarea: {
      margin: '60px 40px 40px 60px'
    },
    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: '12px',
      margin: 'auto 25px 25px 25px',
      text: 'Happy Holidays from ZingChart!'
    },
    series: []
  };

  // Build layout
  let rows = Math.round(height / 20);
  let cols = Math.round(width / 20);
  let iCharCode;
  for (let row=0;row<rows;row++) {
    iCharCode = NAME.charCodeAt(row%NAME.length);
    chartConfig.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: width - 10,
      y: 10 + row * 20
    });
  }
  for (let col=1;col<cols-1;col++) {
    iCharCode = NAME.charCodeAt(col%NAME.length);
    chartConfig.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: height - 10
    });
  }

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

  function fnStep() {
    let i, sSource, sTarget, aPairs, oLink;
    let iCharCode = NAME.charCodeAt((sequence+colorSequence)%NAME.length);
    let iColorCharCode = NAME.charCodeAt(colorSequence%NAME.length);
    // get data from graph
    let aData = zingchart.exec(chartId, 'tree.getdata') || [];
    // count links for each node
    let 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 (sequence%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]
          });
          sequence++;
          return;
        }
      }
    }

    // from time to time remove nodes with too many links
    if (sequence%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]
          });
          sequence++;
          return;
        }
      }
    }

    // from time to time just create a link between existing nodes
    if (sequence%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
            });
            sequence++;
            return;
          }
        }
      }
    }

    // otherwise, create a new node
    sTarget = 'n' + sequence;
    oNode = {
      id: sTarget,
      text: sTarget,
      value: 1,
      style: {
        backgroundImage: 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/374756/xmas' + (sequence%10) + '.png',
        backgroundColor: COLORS[iColorCharCode%COLORS.length]
      }
    };
    colorSequence++;
    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)
      });
    }
    sequence++;
    if (sequence > 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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