X3D Model Documentation: centersize_1.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_1.x3d'/>
  6            <meta name='MovingImage' content='centersize_1-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 of the "center" field of a VisibilitySensor node. A VisibilitySensor (represented by an IndexedLineSet box) is in front of a red Sphere geometry. The "center" field of the VisibilitySensor is located at -100 -100 100 in the world coordinate system. A Viewpoint of -110 -100 110 places the view directly in front of the VisibilitySensor. Directly behind the VisibilitySensor is a Sphere geometry. The VisibilitySensor should generate an isActive true event and begin a color animation of the Sphere. When the viewer moves to the second Viewpoint, behind the bounding box, the color animation should stop.'/>
 17            <meta name='identifier' content='https://www.web3d.org/x3d/content/examples/ConformanceNist/Sensors/VisibilitySensor/centersize_1.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: GEOMETRY, INTERP_COLOR, MYCOLOR, TIME, VIS_SENSOR

Index for Viewpoint nodes: Viewpoint_1, Viewpoint_2
-->
 22       <Scene>
 23            <WorldInfo title='centersize_1.x3d'/>
 24            <Viewpoint description='Front VisibilitySensor' position='-100 -100 110'/>
 25            <Viewpoint description='Behind VisibilitySensor' position='-100 -100 90'/>
 26            <Group>
 27 
               <!-- ROUTE information for TIME node:  [from VIS_SENSOR.isActive to enabled ] [from fraction_changed to INTERP_COLOR.set_fraction ] -->
                <TimeSensor DEF='TIME' cycleInterval='2' enabled='false' loop='true'/>
 28 
               <!-- ROUTE information for INTERP_COLOR node:  [from TIME.fraction_changed to set_fraction ] [from value_changed to MYCOLOR.set_diffuseColor ] -->
                <ColorInterpolator DEF='INTERP_COLOR' key='0 0.5 1' keyValue='1 0 0 0 1 0 0 0 1'/>
 29 
               <!-- ROUTE information for VIS_SENSOR node:  [from isActive to TIME.enabled ] -->
                <VisibilitySensor DEF='VIS_SENSOR' center='-100 -100 100' size='4 4 4'/>
 30                 <Transform translation='-100 -100 100'>
 31                      <Shape>
 32                           <Appearance>
 33                                <Material emissiveColor='1 1 1'/>
 34                           </Appearance>
 35                           <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'>
 36                                <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'/>
 37                           </IndexedLineSet>
 38                      </Shape>
 39                      <Transform DEF='GEOMETRY' translation='0 0 -20'>
 40                           <Shape>
 41                                <Appearance>
 42 
                                   <!-- ROUTE information for MYCOLOR node:  [from INTERP_COLOR.value_changed to set_diffuseColor ] -->
                                    <Material DEF='MYCOLOR' diffuseColor='1 0 0'/>
 43                                </Appearance>
 44                                <Sphere radius='2'/>
 45                           </Shape>
 46                      </Transform>
 47                 </Transform>
 48            </Group>
 49            < ROUTE  fromNode='VIS_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='MYCOLOR' toField='set_diffuseColor'/>
 52       </Scene>
 53  </X3D>
<!--
<!--
Event Graph ROUTE Table shows event connections.
-->

<!-- to top Index for DEF nodes: GEOMETRY, INTERP_COLOR, MYCOLOR, TIME, VIS_SENSOR

Index for Viewpoint nodes: Viewpoint_1, Viewpoint_2
-->
X3D Tooltips element index: Appearance, ColorInterpolator, Coordinate, Group, head, IndexedLineSet, Material, meta, 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.

VIS_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)
MYCOLOR
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'/>
(Light-blue background: event-based behavior node or statement) (Grey background inside box: inserted documentation) (Magenta background: X3D Extensibility)
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