X3D Model Documentation: ECMAScriptSaiPerFrameNotification.x3d

  1  <?xml version="1.0" encoding="UTF-8"?>
  2  <!DOCTYPE X3D PUBLIC "ISO//Web3D//DTD X3D 3.3//EN" "https://www.web3d.org/specifications/x3d-3.3.dtd">
  3  <X3D profile='Immersive' version='3.3'  xmlns:xsd='http://www.w3.org/2001/XMLSchema-instance' xsd:noNamespaceSchemaLocation='https://www.web3d.org/specifications/x3d-3.3.xsd'>
  4       <head>
  5            <meta name='title' content='ECMAScriptSaiPerFrameNotification.x3d'/>
  6            <meta name='description' content='Java Scene Authoring Interface (JSAI) scene and source code example that show how to use per frame notification to produce a frame rate annotation.'/>
  7            <meta name='creator' content='X3D Working Group'/>
  8            <meta name='created' content='23 February 2005'/>
  9            <meta name='modified' content='28 October 2019'/>
 10            <meta name='reference' content='https://www.web3d.org/files/specifications/19777-1/V3.3/Part1/X3D_ECMAScript.html'/>
 11            <meta name='specificationSection' content='X3D language bindings, ISO/IEC 19777-1, Part 1: ECMAScript, B.4 Per frame notification'/>
 12            <meta name='specificationUrl' content='https://www.web3d.org/files/specifications/19777-1/V3.3/Part1/examples.html#PerFrameNotification'/>
 13            <meta name='generator' content='X3D-Edit 3.3, https://savage.nps.edu/X3D-Edit'/>
 14            <meta name='identifier' content='https://www.web3d.org/x3d/content/examples/Basic/X3dSpecifications/ECMAScriptSaiPerFrameNotification.x3d'/>
 15            <meta name='license' content='../license.html'/>
 16       </head>
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 17       <Scene>
 18            <WorldInfo title='ECMAScriptSaiPerFrameNotification.x3d'/>
 19            <Script DEF='SC'>
  <![CDATA[ 
      
ecmascript:
var lastStartTime;

function initialize() {
    date = new Date();
    lastStartTime = date.getTime();
}

// Called each frame
function prepareEvents() {
    date = new Date();
    frameTime = (date.getTime() - lastStartTime) / 1000.0;
    lastStartTime = date.getTime();
    fps = 1.0 / frameTime;
    Browser.println('FPS: ' + fps);
}
]]>
 21            </Script>
 22       </Scene>
 23  </X3D>
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SC
Script
No ROUTE connection found for output events from this node.
This Script has no direct access to other nodes. 
Additional guidance on X3D animation can be found in the 10-Step Animation Design Process and Event Tracing hint sheets. Have fun with X3D! 😀
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