Mon 21 Jul 22:43:21 CEST 2025

2025-07-21 22:51:46 +02:00 · 2025-07-21 22:51:46 +02:00 · 4af8bbf3b0
commit 4af8bbf3b0
parent 0f63e7840a
1 changed files with 110 additions and 0 deletions
--- a/js/dos/ext/vis/examples/graph3d/02_camera.html
+++ b/js/dos/ext/vis/examples/graph3d/02_camera.html
@ -0,0 +1,110 @@
+<!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>