X3D Model Documentation: Snake.x3d

  1  <?xml version="1.0" encoding="UTF-8"?>
  2  <!DOCTYPE X3D PUBLIC "ISO//Web3D//DTD X3D 3.3//EN" "https://www.web3d.org/specifications/x3d-3.3.dtd">
  3  <X3D profile='Immersive' version='3.3'  xmlns:xsd='http://www.w3.org/2001/XMLSchema-instance' xsd:noNamespaceSchemaLocation='https://www.web3d.org/specifications/x3d-3.3.xsd'>
  4       <head>
  5            <meta name='title' content='Snake.x3d'/>
  6            <meta name='description' content='This world creates a morphing snake using an Extrusion node. To make the snake move, a CoordinateInterpolator sends the Extrusion node a series of new spines.'/>
  7            <meta name='creator' content='David R. Nadeau'/>
  8            <meta name='translator' content='Don Brutzman'/>
  9            <meta name='created' content='1 July 1998'/>
 10            <meta name='translated' content='2 February 2014'/>
 11            <meta name='modified' content='19 August 2024'/>
 12            <meta name='reference' content='originals/snake.wrl'/>
 13            <meta name='reference' content='http://www.siggraph.org/s98'/>
 14            <meta name='reference' content='http://www.siggraph.org/s98/conference/courses/18.html'/>
 15            <meta name='reference' content='http://www.sdsc.edu/~moreland/courses/Siggraph98/vrml97/slides/mt0258.htm'/>
 16            <meta name='reference' content='http://www.sdsc.edu/~moreland/courses/Siggraph98/vrml97/vrml97.htm'/>
 17            <meta name='reference' content='https://www.web3d.org/x3d/content/examples/X3dResources.html'/>
 18            <meta name='identifier' content='https://www.web3d.org/x3d/content/examples/Vrml2Sourcebook/Siggraph98Course/Snake.x3d'/>
 19            <meta name='generator' content='Vrml97ToX3dNist, http://ovrt.nist.gov/v2_x3d.html'/>
 20            <meta name='generator' content='X3D-Edit, https://savage.nps.edu/X3D-Edit'/>
 21            <meta name='license' content='../license.html'/>
 22       </head>
<!--
<!--
Event Graph ROUTE Table shows event connections.
-->

<!-- to top Index for DEF nodes: Clock, Snake, SnakeWiggle

Index for Viewpoint node: Viewpoint_1
-->
 23       <Scene>
 24            <WorldInfo info='"Copyright (c) 1998, David R. Nadeau"' title='Morphing snake'/>
 25            <Viewpoint description='Entry view' orientation='1.0 0.0 0.0 -0.785' position='0.0 6.0 6.0'/>
 26            <NavigationInfo/>
 27            <Shape>
 28                 <Appearance>
 29                      <Material diffuseColor='0.4 0.2 0.0'/>
 30                 </Appearance>
 31                 <Box size='30.0 0.01 30.0'/>
 32            </Shape>
 33            <Transform translation='0.0 0.3 0.0'>
 34                 <Shape>
 35                      <Appearance>
 36                           <Material diffuseColor='0.0 1.0 0.2' shininess='0.05' specularColor='0.9 0.9 0.0'/>
 37                      </Appearance>
 38 
                    <!-- ROUTE information for Snake node:  [from SnakeWiggle.value_changed to set_spine ] -->
                     <Extrusion DEF='Snake' creaseAngle='1.57' crossSection='1 0 0.92 -0.38 0.71 -0.71 0.38 -0.92 0 -1 -0.38 -0.92 -0.71 -0.71 -0.92 -0.38 -1 -0 -0.92 0.38 -0.71 0.71 -0.38 0.92 0 1 0.38 0.92 0.71 0.71 0.92 0.38 1 0' scale='0.05 0.05 0.3 0.1 0.5 0.15 0.25 0.25 0.25 0.25 0.28 0.28 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.29 0.29 0.29 0.29 0.29 0.29 0.28 0.28 0.23 0.23 0.17 0.17 0.12 0.12 0.08 0.08 0.05 0.05 0.04 0.04' spine='-5.1 0 1 -4.83 0 1 -4.55 0 1 -4.28 0 1 -4 0 1 -3.72 0 0.91 -3.45 0 0.65 -3.17 0 0.27 -2.9 0 -0.16 -2.62 0 -0.56 -2.34 0 -0.86 -2.07 0 -0.99 -1.79 0 -0.95 -1.52 0 -0.73 -1.24 0 -0.37 -0.97 0 0.05 -0.69 0 0.47 -0.41 0 0.79 -0.14 0 0.98 0.14 0 0.98 0.41 0 0.8 0.69 0 0.47 0.97 0 0.06 1.24 0 -0.37 1.52 0 -0.72 1.79 0 -0.95 2.07 0 -0.99 2.34 0 -0.86 2.62 0 -0.57 2.9 0 -0.17 3.17 0 0.26 3.45 0 0.64 3.72 0 0.9 4 0 1'>
 39                           <!-- spine is open, crossSection is closed -->
 40                      </Extrusion>
 41                 </Shape>
 42            </Transform>
 43 
          <!-- ROUTE information for Clock node:  [from fraction_changed to SnakeWiggle.set_fraction ] -->
           <TimeSensor DEF='Clock' cycleInterval='4.0' loop='true'/>
 44 
          <!-- ROUTE information for SnakeWiggle node:  [from Clock.fraction_changed to set_fraction ] [from value_changed to Snake.set_spine ] -->
           <CoordinateInterpolator DEF='SnakeWiggle' key='0.0 0.03 0.07 0.1 0.14 0.17 0.21 0.24 0.28 0.31 0.34 0.38 0.41 0.45 0.48 0.52 0.55 0.59 0.62 0.66 0.69 0.72 0.76 0.79 0.83 0.86 0.9 0.93 0.97 1.0' keyValue='-4.83 0.0 1.0 -4.55 0.0 1.0 -4.28 0.0 1.0 -4.0 0.0 1.0 -3.72 0.0 0.91 -3.45 0.0 0.67 -3.17 0.0 0.31 -2.9 0.0 -0.1 -2.62 0.0 -0.5 -2.34 0.0 -0.81 -2.07 0.0 -0.98 -1.79 0.0 -0.98 -1.52 0.0 -0.81 -1.24 0.0 -0.5 -0.97 0.0 -0.11 -0.69 0.0 0.31 -0.41 0.0 0.67 -0.14 0.0 0.91 0.14 0.0 1.0 0.41 0.0 0.91 0.69 0.0 0.67 0.97 0.0 0.31 1.24 0.0 -0.1 1.52 0.0 -0.5 1.79 0.0 -0.81 2.07 0.0 -0.98 2.34 0.0 -0.98 2.62 0.0 -0.81 2.9 0.0 -0.5 3.17 0.0 -0.11 3.45 0.0 0.3 3.72 0.0 0.66 4.0 0.0 0.91 4.28 0.0 1.0 -4.83 0.0 0.98 -4.55 0.0 0.98 -4.28 0.0 0.98 -4.0 0.0 0.98 -3.72 0.0 0.98 -3.45 0.0 0.81 -3.17 0.0 0.51 -2.9 0.0 0.11 -2.62 0.0 -0.3 -2.34 0.0 -0.66 -2.07 0.0 -0.91 -1.79 0.0 -1.0 -1.52 0.0 -0.92 -1.24 0.0 -0.68 -0.97 0.0 -0.32 -0.69 0.0 0.09 -0.41 0.0 0.49 -0.14 0.0 0.8 0.14 0.0 0.98 0.41 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0.7 -0.97 0.0 0.93 -0.69 0.0 1.0 -0.41 0.0 0.9 -0.14 0.0 0.64 0.14 0.0 0.27 0.41 0.0 -0.15 0.69 0.0 -0.54 0.97 0.0 -0.83 1.24 0.0 -0.99 1.52 0.0 -0.97 1.79 0.0 -0.78 2.07 0.0 -0.46 2.34 0.0 -0.06 2.62 0.0 0.35 2.9 0.0 0.7 3.17 0.0 0.93 3.45 0.0 1.0 3.72 0.0 0.9 4.0 0.0 0.64 4.28 0.0 0.27 -4.83 0.0 0.47 -4.55 0.0 0.47 -4.28 0.0 0.47 -4.0 0.0 0.47 -3.72 0.0 0.07 -3.45 0.0 -0.35 -3.17 0.0 -0.7 -2.9 0.0 -0.93 -2.62 0.0 -1.0 -2.34 0.0 -0.9 -2.07 0.0 -0.64 -1.79 0.0 -0.27 -1.52 0.0 0.14 -1.24 0.0 0.53 -0.97 0.0 0.83 -0.69 0.0 0.99 -0.41 0.0 0.97 -0.14 0.0 0.79 0.14 0.0 0.47 0.41 0.0 0.07 0.69 0.0 -0.34 0.97 0.0 -0.69 1.24 0.0 -0.93 1.52 0.0 -1.0 1.79 0.0 -0.9 2.07 0.0 -0.64 2.34 0.0 -0.28 2.62 0.0 0.14 2.9 0.0 0.53 3.17 0.0 0.83 3.45 0.0 0.98 3.72 0.0 0.97 4.0 0.0 0.79 4.28 0.0 0.47 -4.83 0.0 0.65 -4.55 0.0 0.65 -4.28 0.0 0.65 -4.0 0.0 0.65 -3.72 0.0 0.28 -3.45 0.0 -0.14 -3.17 0.0 -0.53 -2.9 0.0 -0.83 -2.62 0.0 -0.98 -2.34 0.0 -0.97 -2.07 0.0 -0.79 -1.79 0.0 -0.47 -1.52 0.0 -0.07 -1.24 0.0 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-0.97 0.0 -0.1 -0.69 0.0 0.31 -0.41 0.0 0.67 -0.14 0.0 0.91 0.14 0.0 1.0 0.41 0.0 0.91 0.69 0.0 0.67 0.97 0.0 0.31 1.24 0.0 -0.1 1.52 0.0 -0.5 1.79 0.0 -0.81 2.07 0.0 -0.98 2.34 0.0 -0.98 2.62 0.0 -0.81 2.9 0.0 -0.5 3.17 0.0 -0.11 3.45 0.0 0.31 3.72 0.0 0.67 4.0 0.0 0.91 4.28 0.0 1.0'/>
 45            < ROUTE  fromNode='Clock' fromField='fraction_changed' toNode='SnakeWiggle' toField='set_fraction'/>
 46            < ROUTE  fromNode='SnakeWiggle' fromField='value_changed' toNode='Snake' toField='set_spine'/>
 47       </Scene>
 48  </X3D>
<!--
<!--
Event Graph ROUTE Table shows event connections.
-->

<!-- to top Index for DEF nodes: Clock, Snake, SnakeWiggle

Index for Viewpoint node: Viewpoint_1
-->
X3D Tooltips element index: Appearance, Box, CoordinateInterpolator, Extrusion, head, Material, meta, NavigationInfo, ROUTE, Scene, Shape, TimeSensor, Transform, Viewpoint, 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)
SnakeWiggle
CoordinateInterpolator
set_fraction
SFFloat 		then
 
 
  		SnakeWiggle
CoordinateInterpolator
value_changed
MFVec3f
→
ROUTE
event to
(2)
Snake
Extrusion
set_spine
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! 😀
-->
<!-- Online at
https://www.web3d.org/x3d/content/examples/Vrml2Sourcebook/Siggraph98Course/SnakeIndex.html -->
<!-- Version control at
https://sourceforge.net/p/x3d/code/HEAD/tree/www.web3d.org/x3d/content/examples/Vrml2Sourcebook/Siggraph98Course/Snake.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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