<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE X3D PUBLIC "ISO//Web3D//DTD X3D 3.0//EN" "https://www.web3d.org/specifications/x3d-3.0.dtd">
<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 ' >
<head>
<component level='1name='NURBS'/>
<meta name='titlecontent=' NurbsPositionInterpolatorExample.x3d '/>
<meta name='descriptioncontent='Example of animating a ball along a NurbsCurve.'/>
<meta name='creatorcontent='Charles Adams'/>
<meta name='createdcontent='26 February 2003'/>
<meta name='modifiedcontent='20 October 2019'/>
<meta name='referencecontent=' http://edocs.nps.edu/npspubs/scholarly/theses/2003/Jun/03Jun_Adams.pdf '/>
<meta name=' warning content=' under development, needs to be upgraded to final version of X3D NURBS nodes '/>
<meta name='subjectcontent='NURBS Position Interpolator'/>
<meta name='identifiercontent=' https://www.web3d.org/x3d/content/examples/Basic/NURBS/NurbsPositionInterpolatorExample.x3d '/>
<meta name='generatorcontent='X3D-Edit 3.3, https://savage.nps.edu/X3D-Edit'/>
<meta name='licensecontent=' ../license.html'/>
</head>
<!--

to top <!-- Event Graph ROUTE Table shows event connections -->
 
<!-- Index for DEF nodes: ball, nc, npi, ts

Index for Viewpoint node: Viewpoint_1
-->
<Scene>
<WorldInfo title='NurbsPositionInterpolatorExample.x3d'/>
<Viewpoint description='NurbsPositionInterpolator pathposition='11 4.6 18'/>
<!-- ROUTE information for ts node:  [from fraction_changed to npi.set_fraction ] -->
<TimeSensor DEF='tscycleInterval='4loop='true'/>

<!-- ROUTE information for npi node:  [from ts.fraction_changed to set_fraction ] [from value_changed to ball.set_translation ] -->
<NurbsPositionInterpolator DEF='npiknot='0 .25 .5 .75 1order='4'>
<Coordinate containerField='controlPointpoint='4 6 0 7 12 0 11 6 0 15 2 0 20 6 0'/>
</NurbsPositionInterpolator>
<!-- ROUTE information for ball node:  [from npi.value_changed to set_translation ] -->
<Transform DEF='ball'>
<Shape>
<Appearance>
<Material diffuseColor='1 1 0'/>
</Appearance>
<Sphere/>
</Shape>
</Transform>
<Shape>
<NurbsCurve DEF='ncorder='4tessellation='30containerField='geometry'>
<Coordinate containerField='controlPointpoint='4 6 0 7 12 0 11 6 0 15 2 0 20 6 0'/>
</NurbsCurve>
<Appearance>
<Material emissiveColor='1 1 1'/>
</Appearance>
</Shape>
< ROUTE  fromNode=' ts' fromField='fraction_changed' toNode=' npi' toField='set_fraction'/>
< ROUTE  fromNode=' npi' fromField='value_changed' toNode=' ball' toField='set_translation'/>
</Scene>
</X3D>
<!--

to top <!-- Event Graph ROUTE Table shows event connections -->
 
<!-- Index for DEF nodes: ball, nc, npi, ts

Index for Viewpoint node: Viewpoint_1
-->

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.

ts
TimeSensor
fraction_changed
SFFloat

ROUTE
event to
(1)
npi
NurbsPositionInterpolator
set_fraction
SFFloat

 
 
then
npi
NurbsPositionInterpolator
value_changed
SFVec3f

ROUTE
event to
(2)
ball
Transform
set_translation
SFVec3f


-->

<!-- Online at
https://www.web3d.org/x3d/content/examples/Basic/NURBS/NurbsPositionInterpolatorExampleIndex.html -->
<!-- Version control at
https://sourceforge.net/p/x3d/code/HEAD/tree/www.web3d.org/x3d/content/examples/Basic/NURBS/NurbsPositionInterpolatorExample.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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