X3D Model Documentation: Figure13_17bMorphingCubeLineSet.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='Interchange' 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='Figure13_17bMorphingCubeLineSet.x3d'/>
  6            <meta name='creator' content='Figure 13.17, The VRML 2.0 Sourcebook, Copyright [1997] By Andrea L. Ames, David R. Nadeau, and John L. Moreland'/>
  7            <meta name='reference' content='http://www.wiley.com/legacy/compbooks/vrml2sbk/ch13/13fig17.htm'/>
  8            <meta name='translator' content='Don Brutzman'/>
  9            <meta name='translator' content='Colleen Case'/>
 10            <meta name='created' content='16 August 2000'/>
 11            <meta name='modified' content='1 July 2023'/>
 12            <meta name='description' content='A morphing cube shape using IndexedLineSet and CoordinateInterpolator. Note that constant-width lines thwart perspective rendering and lead to optical-illusion effects.'/>
 13            <meta name='identifier' content='https://www.web3d.org/x3d/content/examples/Vrml2Sourcebook/Chapter13PointsLinesFaces/Figure13_17bMorphingCubeLineSet.x3d'/>
 14            <meta name='generator' content='X3D-Edit 3.3, https://savage.nps.edu/X3D-Edit'/>
 15            <meta name='license' content='../../license.html'/>
 16       </head>
<!--
<!--
Event Graph ROUTE Table shows event connections.
-->

<!-- to top Index for DEF nodes: CLOCK, CUBE_COORDINATES, CUBE_MORPH
-->
 17       <Scene>
 18            <WorldInfo title='Figure13_17bMorphingCubeLineSet.x3d'/>
 19            <Group>
 20                 <Shape>
 21                      <Appearance>
 22                           <!-- Note use of emissiveColor rather than diffuseColor, so that lines will render. -->
 23                           <Material emissiveColor='0 1 1'/>
 24                      </Appearance>
 25                      <!-- Note that coordIndex sets repeat first and last values in order to close each polygon outline. -->
 26                      <IndexedLineSet coordIndex='0 1 2 3 0 -1 7 6 5 4 7 -1 0 4 5 1 0 -1 1 5 6 2 1 -1 2 6 7 3 2 -1 3 7 4 0 3 -1'>
 27 
                         <!-- ROUTE information for CUBE_COORDINATES node:  [from CUBE_MORPH.value_changed to set_point ] -->
                          <Coordinate DEF='CUBE_COORDINATES' point='-1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 -1.0 -1.0 1.0 -1.0 -1.0 -1.0 1.0 1.0 -1.0 1.0 1.0 -1.0 -1.0 -1.0 -1.0 -1.0'/>
 28                      </IndexedLineSet>
 29                 </Shape>
 30 
               <!-- ROUTE information for CLOCK node:  [from fraction_changed to CUBE_MORPH.set_fraction ] -->
                <TimeSensor DEF='CLOCK' cycleInterval='4' loop='true'/>
 31 
               <!-- ROUTE information for CUBE_MORPH node:  [from CLOCK.fraction_changed to set_fraction ] [from value_changed to CUBE_COORDINATES.set_point ] -->
                <CoordinateInterpolator DEF='CUBE_MORPH' key='0.0 0.5 1.0' keyValue='-1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 -1.0 -1.0 1.0 -1.0 -1.0 -1.0 1.0 1.0 -1.0 1.0 1.0 -1.0 -1.0 -1.0 -1.0 -1.0 -1.5 1.0 1.5 1.5 1.0 1.5 1.5 1.0 -1.5 -1.5 1.0 -1.5 -0.5 -1.0 0.5 0.5 -1.0 0.5 0.5 -1.0 -0.5 -0.5 -1.0 -0.5 -1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 -1.0 -1.0 1.0 -1.0 -1.0 -1.0 1.0 1.0 -1.0 1.0 1.0 -1.0 -1.0 -1.0 -1.0 -1.0'/>
 32            </Group>
 33            < ROUTE  fromNode='CLOCK' fromField='fraction_changed' toNode='CUBE_MORPH' toField='set_fraction'/>
 34            < ROUTE  fromNode='CUBE_MORPH' fromField='value_changed' toNode='CUBE_COORDINATES' toField='set_point'/>
 35       </Scene>
 36  </X3D>
<!--
<!--
Event Graph ROUTE Table shows event connections.
-->

<!-- to top Index for DEF nodes: CLOCK, CUBE_COORDINATES, CUBE_MORPH
-->
X3D Tooltips element index: Appearance, Coordinate, CoordinateInterpolator, Group, head, IndexedLineSet, Material, meta, ROUTE, Scene, Shape, TimeSensor, WorldInfo, X3D, accessType and type, XML data types, field types

Event Graph ROUTE Table with 2 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.

CLOCK
TimeSensor
fraction_changed
SFFloat
→
ROUTE
event to
(1)
CUBE_MORPH
CoordinateInterpolator
set_fraction
SFFloat 		then
 
 
  		CUBE_MORPH
CoordinateInterpolator
value_changed
MFVec3f
→
ROUTE
event to
(2)
CUBE_COORDINATES
Coordinate
set_point
MFVec3f
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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<!-- Online at
https://www.web3d.org/x3d/content/examples/Vrml2Sourcebook/Chapter13PointsLinesFaces/Figure13_17bMorphingCubeLineSetIndex.html -->
<!-- Version control at
https://sourceforge.net/p/x3d/code/HEAD/tree/www.web3d.org/x3d/content/examples/Vrml2Sourcebook/Chapter13PointsLinesFaces/Figure13_17bMorphingCubeLineSet.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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