X3D Model Documentation: centersize.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='centersize.x3d'/>
  6            <meta name='MovingImage' content='centersize-movie.mpg'/>
  7            <meta name='reference' content='http://www.nist.gov/vrml.html'/>
  8            <meta name='reference' content='http://www.itl.nist.gov/div897/ctg/vrml/vrml.html'/>
  9            <meta name='creator' content='http://www.itl.nist.gov/div897/ctg/vrml/members.html'/>
 10            <meta name='disclaimer' content='This file was provided by the National Institute of Standards and Technology, and is part of the X3D Conformance Test Suite, available at http://www.nist.gov/vrml.html The information contained within this file is provided for use in establishing conformance to the ISO VRML97 Specification. Conformance to this test does not imply recommendation or endorsement by the National Institute of Standards and Technology (NIST). This software can be redistributed and/or modified freely provided that any derivative works bear some notice that they are derived from it, and any modified versions bear some notice that they have been modified. '/>
 11            <meta name='reference' content='Interactive Conformance Testing for VRML, Mary Brady and Lynn Rosenthal, NIST, created 8 September 2010 and updated 25 August 2016, https://www.nist.gov/itl/ssd/information-systems-group/interactive-conformance-testing-vrml'/>
 12            <meta name='info' content='Correct definition and compliance of this conformance scene is maintained by the X3D Working Group, https://www.web3d.org/working-groups/x3d'/>
 13            <meta name='translator' content='Michael Kass NIST, Don Brutzman NPS'/>
 14            <meta name='translated' content='21 January 2001'/>
 15            <meta name='modified' content='28 August 2023'/>
 16            <meta name='description' content='Test the size field for a VisibilitySensor node. A Sphere geometry has an associated VisibilitySensor in front of it, at point 0 0 0. The default ViewPoint is at point 0 0 10, looking down the -Z axis. Because the bounding box, with dimensions 4 4 4 is in direct sight, an isActive event is generated by the enabled VisibilitySensor node, which is routed to enable a TimeSensor node, which starts a color animation of the Sphere. When the user moves to the second viewpoint, behing the bounding box, at point 0 0 -10, an isActive=false event is generated and the Sphere ceases to change color.'/>
 17            <meta name='identifier' content='https://www.web3d.org/x3d/content/examples/ConformanceNist/Sensors/VisibilitySensor/centersize.x3d'/>
 18            <meta name='generator' content='Vrml97ToX3dNist, http://ovrt.nist.gov/v2_x3d.html'/>
 19            <meta name='generator' content='X3D-Edit 4.0, https://savage.nps.edu/X3D-Edit'/>
 20            <meta name='license' content='../../license.html'/>
 21       </head>
<!--
<!--
Event Graph ROUTE Table shows event connections.
-->

<!-- to top Index for DEF nodes: COLOR, GEOMETRY, INTERP_COLOR, TIME, VISIB_SENSOR

Index for Viewpoint nodes: Viewpoint_1, Viewpoint_2, Viewpoint_3
-->
 22       <Scene>
 23            <WorldInfo title='centersize.x3d'/>
 24            <NavigationInfo type='"EXAMINE" "WALK" "FLY" "ANY"'/>
 25            <Viewpoint description='Front View'/>
 26            <Viewpoint description='Inside VisibilitySensor' position='0 0 0'/>
 27            <Viewpoint description='Behind VisibilitySensor' position='0 0 -10'/>
 28 
          <!-- ROUTE information for TIME node:  [from VISIB_SENSOR.isActive to enabled ] [from fraction_changed to INTERP_COLOR.set_fraction ] -->
           <TimeSensor DEF='TIME' cycleInterval='2' enabled='false' loop='true'/>
 29 
          <!-- ROUTE information for INTERP_COLOR node:  [from TIME.fraction_changed to set_fraction ] [from value_changed to COLOR.set_diffuseColor ] -->
           <ColorInterpolator DEF='INTERP_COLOR' key='0 0.5 1' keyValue='1 0 0 0 1 0 0 0 1'/>
 30            <Group>
 31 
               <!-- ROUTE information for VISIB_SENSOR node:  [from isActive to TIME.enabled ] -->
                <VisibilitySensor DEF='VISIB_SENSOR' size='4 4 4'/>
 32                 <Shape>
 33                      <Appearance>
 34                           <Material emissiveColor='1 1 1'/>
 35                      </Appearance>
 36                      <IndexedLineSet coordIndex='0 1 -1 1 2 -1 2 3 -1 3 0 -1 4 5 -1 5 6 -1 6 7 -1 7 4 -1 1 5 -1 2 6 -1 0 4 -1 7 3 -1'>
 37                           <Coordinate point='-2 -2 -2 2 -2 -2 2 2 -2 -2 2 -2 -2 -2 2 2 -2 2 2 2 2 -2 2 2'/>
 38                      </IndexedLineSet>
 39                 </Shape>
 40                 <Transform DEF='GEOMETRY' translation='0 0 -20'>
 41                      <Shape>
 42                           <Appearance>
 43 
                              <!-- ROUTE information for COLOR node:  [from INTERP_COLOR.value_changed to set_diffuseColor ] -->
                               <Material DEF='COLOR' diffuseColor='1 0 0'/>
 44                           </Appearance>
 45                           <Sphere radius='2'/>
 46                      </Shape>
 47                 </Transform>
 48            </Group>
 49            < ROUTE  fromNode='VISIB_SENSOR' fromField='isActive' toNode='TIME' toField='enabled'/>
 50            < ROUTE  fromNode='TIME' fromField='fraction_changed' toNode='INTERP_COLOR' toField='set_fraction'/>
 51            < ROUTE  fromNode='INTERP_COLOR' fromField='value_changed' toNode='COLOR' toField='set_diffuseColor'/>
 52       </Scene>
 53  </X3D>
<!--
<!--
Event Graph ROUTE Table shows event connections.
-->

<!-- to top Index for DEF nodes: COLOR, GEOMETRY, INTERP_COLOR, TIME, VISIB_SENSOR

Index for Viewpoint nodes: Viewpoint_1, Viewpoint_2, Viewpoint_3
-->
X3D Tooltips element index: Appearance, ColorInterpolator, Coordinate, Group, head, IndexedLineSet, Material, meta, NavigationInfo, ROUTE, Scene, Shape, Sphere, TimeSensor, Transform, Viewpoint, VisibilitySensor, WorldInfo, X3D, accessType and type, XML data types, field types

Event Graph ROUTE Table entries with 3 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.

VISIB_SENSOR
VisibilitySensor
isActive
SFBool
→
ROUTE
event to
(1)
TIME
TimeSensor
enabled
SFBool 		then
 
 
  		TIME
TimeSensor
fraction_changed
SFFloat
→
ROUTE
event to
(2)
INTERP_COLOR
ColorInterpolator
set_fraction
SFFloat 		then
 
 
  		INTERP_COLOR
ColorInterpolator
value_changed
SFColor
→
ROUTE
event to
(3)
COLOR
Material
set_diffuseColor
SFColor

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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<!-- Color legend: X3D terminology <X3dNode DEF='idName' field='value'/> matches XML terminology <XmlElement DEF='idName' attribute='value'/>
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