X3D Model Documentation: PerFrameNotificationECMAScript.x3d

  1  <?xml version="1.0" encoding="UTF-8"?>
  2  <!DOCTYPE X3D PUBLIC "ISO//Web3D//DTD X3D 3.1//EN" "https://www.web3d.org/specifications/x3d-3.1.dtd">
  3  <X3D profile='Immersive' version='3.1'  xmlns:xsd='http://www.w3.org/2001/XMLSchema-instance' xsd:noNamespaceSchemaLocation='https://www.web3d.org/specifications/x3d-3.1.xsd'>
  4       <head>
  5            <meta name='title' content='PerFrameNotificationECMAScript.x3d'/>
  6            <meta name='description' content='This example shows how to use per-frame notification to produce a frame rate output in the Browser console'/>
  7            <meta name='creator' content='X3D Specification'/>
  8            <meta name='translator' content='Xeena VRML importer'/>
  9            <meta name='translated' content='23 February 2005'/>
 10            <meta name='modified' content='20 October 2019'/>
 11            <meta name='subject' content='X3D ECMAScript Script Authoring Interface (SAI)'/>
 12            <meta name='identifier' content='https://www.web3d.org/x3d/content/examples/Basic/ScriptConformance/PerFrameNotificationECMAScript.x3d'/>
 13            <meta name='reference' content='https://www.web3d.org/x3d/specifications/ISO-IEC-19777-1-X3DLanguageBindings-ECMAScript/Part1/examples.html#PerFrameNotification'/>
 14            <meta name='generator' content='Vrml97ToX3dNist, http://ovrt.nist.gov/v2_x3d.html'/>
 15            <meta name='generator' content='X3D-Edit 3.3, https://savage.nps.edu/X3D-Edit'/>
 16            <meta name='license' content='../license.html'/>
 17       </head>
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 18       <Scene>
 19            <WorldInfo title='PerFrameNotificationECMAScript.x3d'/>
 20            <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);
}
]]>
 22            </Script>
 23       </Scene>
 24  </X3D>
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X3D Tooltips element index: head, meta, Scene, Script, WorldInfo, X3D, accessType and type, XML data types, field types

Event Graph ROUTE Table with 0 ROUTE connections total, showing X3D event-model relationships for this scene.

Each row shows an event cascade that may occur during a single timestamp interval between frame renderings, as part of the X3D execution model.

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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