<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
  <title>Graph 3D styles</title>

  <style>
    body {font: 10pt arial;}
  </style>

  <script type="text/javascript" src="../../dist/vis.js"></script>

  <script type="text/javascript">
    var data = null;
    var graph = null;

    function custom(x, y) {
      return (-Math.sin(x/Math.PI) * Math.cos(y/Math.PI) * 10 + 10);
    }

    // Called when the Visualization API is loaded.
    function drawVisualization() {
      var style = document.getElementById('style').value;
      var showPerspective = document.getElementById('perspective').checked;
      var xBarWidth = parseFloat(document.getElementById('xBarWidth').value) || undefined;
      var yBarWidth = parseFloat(document.getElementById('yBarWidth').value) || undefined;
      var withValue = ['bar-color', 'bar-size', 'dot-size', 'dot-color'].indexOf(style) != -1;

      // Create and populate a data table.
      data = [];

      // create some nice looking data with sin/cos
      var steps = 5;  // number of datapoints will be steps*steps
      var axisMax = 10;
      var axisStep = axisMax / steps;
      for (var x = 0; x <= axisMax; x+=axisStep) {
        for (var y = 0; y <= axisMax; y+=axisStep) {
          var z = custom(x,y);
          if (withValue) {
            var value = (y - x);
            data.push({x:x, y:y, z: z, style:value});
          }
          else {
            data.push({x:x, y:y, z: z});
          }
        }
      }

      // specify options
      var options = {
        width:  '600px',
        height: '600px',
        style: style,
        xBarWidth: xBarWidth,
        yBarWidth: yBarWidth,
        showPerspective: showPerspective,
        showGrid: true,
        showShadow: false,
        keepAspectRatio: true,
        verticalRatio: 0.5
      };

      var camera = graph ? graph.getCameraPosition() : null;

      // create our graph
      var container = document.getElementById('mygraph');
      graph = new vis.Graph3d(container, data, options);

      if (camera) graph.setCameraPosition(camera); // restore camera position

      document.getElementById('style').onchange = drawVisualization;
      document.getElementById('perspective').onchange = drawVisualization;
      document.getElementById('xBarWidth').onchange = drawVisualization;
      document.getElementById('yBarWidth').onchange = drawVisualization;
    }
  </script>
</head>

<body onload="drawVisualization()">

<p>
  <label for="style"> Style:
    <select id="style">
      <option value="bar">bar</option>
      <option value="bar-color">bar-color</option>
      <option value="bar-size">bar-size</option>

      <option value="dot">dot</option>
      <option value="dot-line">dot-line</option>
      <option value="dot-color">dot-color</option>
      <option value="dot-size">dot-size</option>

      <option value="grid">grid</option>
      <option value="line">line</option>
      <option value="surface">surface</option>
    </select>
  </label>
</p>

<p>
  <label for="perspective">
    <input type="checkbox" id="perspective" checked> Show perspective
  </label>
</p>

<p>
  <label for="xBarWidth"> Bar width X:
    <input type="text" id="xBarWidth" value="" style="width:50px;"> (only applicable for styles "bar" and "bar-color")
  </label>
</p>
<p>
  <label for="yBarWidth"> Bar width Y:
    <input type="text" id="yBarWidth" value="" style="width:50px;"> (only applicable for styles "bar" and "bar-color")
  </label>
</p>

<div id="mygraph"></div>

<div id="info"></div>
</body>
</html>