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- <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
- <html>
- <head>
- <title>Graph 3D camera position</title>
-
- <style>
- body {font: 10pt arial;}
- td {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/50) * Math.cos(y/50) * 50 + 50);
- }
-
- // callback function, called when the camera position has changed
- function onCameraPositionChange() {
- // adjust the values of startDate and endDate
- var pos = graph.getCameraPosition();
- document.getElementById('horizontal').value = parseFloat(pos.horizontal.toFixed(3));
- document.getElementById('vertical').value = parseFloat(pos.vertical.toFixed(3));
- document.getElementById('distance').value = parseFloat(pos.distance.toFixed(3));
- }
-
- // set the camera position
- function setCameraPosition() {
- var horizontal = parseFloat(document.getElementById('horizontal').value);
- var vertical = parseFloat(document.getElementById('vertical').value);
- var distance = parseFloat(document.getElementById('distance').value);
- var pos = {
- horizontal: horizontal,
- vertical: vertical,
- distance: distance
- };
- graph.setCameraPosition(pos);
-
- // retrieve the camera position again, to get the applied values
- onCameraPositionChange();
- }
-
- // Called when the Visualization API is loaded.
- function drawVisualization() {
- // Create and populate a data table.
- data = new vis.DataSet();
- // create some nice looking data with sin/cos
- var steps = 50; // number of datapoints will be steps*steps
- var axisMax = 314;
- var axisStep = axisMax / steps;
- for (var x = 0; x < axisMax; x+=axisStep) {
- for (var y = 0; y < axisMax; y+=axisStep) {
- var value = custom(x,y);
- data.add([
- {x:x,y:y,z:value,t:0,style:value}
- ]);
- }
- }
-
- // specify options
- var options = {
- width: '600px',
- height: '600px',
- style: 'surface',
- showPerspective: true,
- showGrid: true,
- showShadow: false,
- keepAspectRatio: true,
- verticalRatio: 0.5
- };
-
- // create our graph
- var container = document.getElementById('mygraph');
- graph = new vis.Graph3d(container, data, options);
-
- graph.on('cameraPositionChange', onCameraPositionChange);
- }
- </script>
- </head>
-
- <body onload="drawVisualization()">
- <h1>Graph 3d camera position</h1>
- <table>
- <tr>
- <td>Horizontal angle (0 to 2*pi)</td>
- <td><input type="text" id="horizontal" value="1.0"></td>
- </tr>
- <tr>
- <td>Vertical angle (0 to 0.5*pi)</td>
- <td><input type="text" id="vertical" value="0.5"></td>
- </tr>
- <tr>
- <td>Distance (0.71 to 5.0)</td>
- <td><input type="text" id="distance" value="1.7"></td>
- </tr>
- <tr>
- <td></td>
- <td><input type="button" value="Set" onclick="setCameraPosition();"></td>
- </tr>
- </table>
-
- <div id="mygraph"></div>
-
- <div id="info"></div>
- </body>
- </html>
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