X3D Model Documentation: ScriptNodeFieldControl_EcmaScript.x3d

  1  <?xml version="1.0" encoding="UTF-8"?>
  2 
<!DOCTYPE X3D PUBLIC "ISO//Web3D//DTD X3D 3.0//EN" "https://www.web3d.org/specifications/x3d-3.0.dtd">
  3  <X3D profile='Immersive' version='3.0'  xmlns:xsd='http://www.w3.org/2001/XMLSchema-instance' xsd:noNamespaceSchemaLocation='https://www.web3d.org/specifications/x3d-3.0.xsd'>
  4       <head>
  5            <meta name='title' content='ScriptNodeFieldControl_EcmaScript.x3d'/>
  6            <meta name='description' content='Script node interface between VRML and EcmaScript: this conformance example tests field-based VRML-EcmaScript functionality.'/>
  7            <meta name='creator' content='Don Brutzman'/>
  8            <meta name='created' content='30 November 1997'/>
  9            <meta name='translated' content='13 May 2001'/>
 10            <meta name='modified' content='20 October 2019'/>
 11            <meta name='identifier' content='https://www.web3d.org/x3d/content/examples/Basic/ScriptConformance/ScriptNodeFieldControl_EcmaScript.x3d'/>
 12            <meta name='reference' content='VRML 97 Specification, Annex C, ECMAScript scripting reference'/>
 13            <meta name='reference' content='https://www.web3d.org/technicalinfo/specifications/vrml97/part1/javascript.html'/>
 14            <meta name='reference' content='https://www.web3d.org/technicalinfo/specifications/vrml97/part1/javascript.html#AccessingFields'/>
 15            <meta name='reference' content='Makefile'/>
 16            <meta name='reference' content='Makefile.out'/>
 17            <meta name='reference' content='ScriptNodeFieldControl_EcmaScript-VrmlConsoleOutput.txt'/>
 18            <meta name='reference' content='ScriptNodeFieldControl_EcmaScriptSnapshots.html'/>
 19            <meta name='reference' content='ScriptNodeFieldControl_Java.x3d'/>
 20            <meta name='subject' content='VRML X3D EcmaScript Script conformance'/>
 21            <meta name='generator' content='X3D-Edit 3.3, https://savage.nps.edu/X3D-Edit'/>
 22            <meta name='license' content='../license.html'/>
 23       </head>
<!--
<!--
Event Graph ROUTE Table shows event connections.
-->

<!-- to top Index for DEF nodes: ClickTextToTest, InterfaceScriptNode, MessageToUser, TextMaterial, TextPosition

Index for Viewpoint node: Viewpoint_1
-->
 24       <Scene>
 25            <WorldInfo title='ScriptNodeFieldControl_EcmaScript.x3d'/>
 26            <Viewpoint description='View test' position='0 0 12'/>
 27            <Group>
 28 
               <!-- ROUTE information for ClickTextToTest node:  [from touchTime to InterfaceScriptNode.startTime ] -->
                <TouchSensor DEF='ClickTextToTest' description='Click text to test'/>
 29 
               <!-- Transform TextPosition is a DEF node that has 1 USE node: USE_1 -->
                <Transform DEF='TextPosition'>
 30                      <!-- TextPosition translation is modified by InterfaceScriptNode. -->
 31                      <Shape>
 32 
                         <!-- Text MessageToUser is a DEF node that has 1 USE node: USE_1 -->
                          <Text DEF='MessageToUser' string='"Default text in VRML scene will be replaced by" "Java initialize() in Script using EventOut control." "This text appears first, if Java initialization fails." ""'>
 33                                <FontStyle justify='"MIDDLE" "MIDDLE"' size='0.8'/>
 34                           </Text>
 35                           <Appearance>
 36 
                              <!-- Material TextMaterial is a DEF node that has 1 USE node: USE_1 -->
                               <Material DEF='TextMaterial' diffuseColor='0.8 0.2 0.2' shininess='0.9'/>
 37                           </Appearance>
 38                      </Shape>
 39                 </Transform>
 40 
               <!-- ROUTE information for InterfaceScriptNode node:  [from ClickTextToTest.touchTime to startTime ] -->
                <Script DEF='InterfaceScriptNode' directOutput='true'>
 41                      <!-- No default values are allowed for eventIn or eventOut. -->
 42                      <field name='startTime' type='SFTime' accessType='inputOnly'/>
 43                      <field name='sceneText' type='SFNode' accessType='initializeOnly'>
 44                           <Text USE='MessageToUser'/>
 45                      </field>
 46                      <field name='sceneTransform' type='SFNode' accessType='initializeOnly'>
 47                           <Transform USE='TextPosition'/>
 48                      </field>
 49                      <field name='sceneMaterial' type='SFNode' accessType='initializeOnly'>
 50                           <Material USE='TextMaterial'/>
 51                      </field>
  <![CDATA[ 
        
ecmascript:

function initialize ()
{
	DEBUG = true;
	mode  = 1;
	if (DEBUG) Browser.println ('initialize ():');

	sceneText.string = new MFString (
	'EcmaScript initialize () with field control',
 	'has reinitialized the changedText node.',
 	'',
 	'Please click text for additional results.');
	sceneTransform.translation = new SFVec3f ( 0, 3, 0 );
	sceneMaterial.diffuseColor = new SFColor ( 0.8, 0.8, 0.2 );
	if (DEBUG) Browser.println ('sceneText.string           =' + sceneText.string);
	if (DEBUG) Browser.println ('sceneTransform.translation =' + sceneTransform.translation);
	if (DEBUG) Browser.println ('sceneMaterial.diffuseColor =' + sceneMaterial.diffuseColor);
}
function startTime (value, timestamp)
{
	if (DEBUG) Browser.println ('==============================');
	if (DEBUG) Browser.println ('touchEvent startTime =' + value);

	mode = (mode + 1) % 3;
	if (DEBUG) Browser.println ('mode =' + mode);
	switch (mode)
	{
	  case 0:	// pre-initialize error messsage
		sceneText.string = new MFString (
		'Default text in VRML scene will be replaced by',
 		'EcmaScript initialize() in Script using field control.',
 		'This text appears first, if EcmaScript initialization fails.',
 		'');
 		sceneTransform.translation = new SFVec3f ( 0, 1, 0 );
		sceneMaterial.diffuseColor = new SFColor ( 0.8, 0.2, 0.2 ); 
	  	break;

	  case 1:	// post-initialize ready-to-click message
		initialize ();
		break;

	  case 2:	// post-click all-done message
		sceneText.string = new MFString (
		'User click on text seen by EcmaScript',
 		'function via Script node eventIn.',
 		'Text & position successfully changed',
 		'via field control.  Test passed.');
	 	sceneTransform.translation = new SFVec3f ( 0, -1, 0 );
	 	sceneMaterial.diffuseColor = new SFColor ( 0.2, 0.8, 0.2 );
		break;
	}
		
	if (mode != 1)
	{
	 	if (DEBUG) Browser.println ('sceneText.string           =' + sceneText.string);
	 	if (DEBUG) Browser.println ('sceneTransform.translation =' + sceneTransform.translation);
	 	if (DEBUG) Browser.println ('sceneMaterial.diffuseColor =' + sceneMaterial.diffuseColor);
	 	if (DEBUG) Browser.println ();
 	}
}
function shutdown()
{
	if (DEBUG) Browser.println ('==============================');
  	if (DEBUG) Browser.println ('script shutdown.');
	if (DEBUG) Browser.println ('==============================');
}
]]>
 53                 </Script>
 54            </Group>
 55            < ROUTE  fromNode='ClickTextToTest' fromField='touchTime' toNode='InterfaceScriptNode' toField='startTime'/>
 56       </Scene>
 57  </X3D>
<!--
<!--
Event Graph ROUTE Table shows event connections.
-->

<!-- to top Index for DEF nodes: ClickTextToTest, InterfaceScriptNode, MessageToUser, TextMaterial, TextPosition

Index for Viewpoint node: Viewpoint_1
-->
X3D Tooltips element index: Appearance, field, FontStyle, Group, head, Material, meta, ROUTE, Scene, Script, Shape, Text, TouchSensor, Transform, Viewpoint, WorldInfo, X3D, accessType and type, XML data types, field types

Event Graph ROUTE Table with 1 ROUTE connection 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.

ClickTextToTest
TouchSensor
touchTime
SFTime
→
ROUTE
event to
(1)
InterfaceScriptNode
Script
startTime
SFTime

      InterfaceScriptNode
Script
No ROUTE connection found for output events from this node.
Contains SFNode fields with direct access to another node. 
Additional guidance on X3D animation can be found in the 10-Step Animation Design Process and Event Tracing hint sheets. Have fun with X3D! 😀
-->
<!-- Online at
https://www.web3d.org/x3d/content/examples/Basic/ScriptConformance/ScriptNodeFieldControl_EcmaScriptIndex.html -->
<!-- Version control at
https://sourceforge.net/p/x3d/code/HEAD/tree/www.web3d.org/x3d/content/examples/Basic/ScriptConformance/ScriptNodeFieldControl_EcmaScript.x3d -->

<!-- Color legend: X3D terminology <X3dNode DEF='idName' field='value'/> matches XML terminology <XmlElement DEF='idName' attribute='value'/>
(Light-blue background: event-based behavior node or statement) (Grey background inside box: inserted documentation) (Magenta background: X3D Extensibility)
-->

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