vis.js is a dynamic, browser-based visualization library
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<!doctype html>
<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>
<script src="../googleAnalytics.js"></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>