NurbsPositionInterpolatorExample.x3d (X3dToXhtml listing)

X3D Model Documentation: NurbsPositionInterpolatorExample.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	<component level='1' name='NURBS'/>
6	<meta name='title' content=' NurbsPositionInterpolatorExample.x3d '/>
7	<meta name='description' content='Example of animating a ball along a NurbsCurve.'/>
8	<meta name='creator' content='Charles Adams'/>
9	<meta name='created' content='26 February 2003'/>
10	<meta name='modified' content='20 October 2019'/>
11	<meta name='reference' content=' http://edocs.nps.edu/npspubs/scholarly/theses/2003/Jun/03Jun_Adams.pdf '/>
12	<meta name=' warning ' content=' under development, needs to be upgraded to final version of X3D NURBS nodes '/>
13	<meta name='subject' content='NURBS Position Interpolator'/>
14	<meta name='identifier' content=' https://www.web3d.org/x3d/content/examples/Basic/NURBS/NurbsPositionInterpolatorExample.x3d '/>
15	<meta name='generator' content='X3D-Edit 3.3, https://www.web3d.org/x3d/tools/X3D-Edit'/>
16	<meta name='license' content='../license.html'/>
17	</head>

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Event Graph ROUTE Table shows event connections.

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<!--

DEF nodes index: ball, nc, npi, ts

Index for Viewpoint node: Viewpoint_1

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18	<Scene>
19	<WorldInfo title='NurbsPositionInterpolatorExample.x3d'/>
20	<Viewpoint description='NurbsPositionInterpolator path' position='11 4.6 18'/>
21	<!-- ROUTE information for ts node: [from fraction_changed to npi.set_fraction ] --> <TimeSensor DEF='ts' cycleInterval='4' loop='true'/>
22	<!-- ROUTE information for npi node: [from ts.fraction_changed to set_fraction ] [from value_changed to ball.set_translation ] --> <NurbsPositionInterpolator DEF='npi' knot='0 .25 .5 .75 1' order='4'>
23	<Coordinate containerField='controlPoint' point='4 6 0 7 12 0 11 6 0 15 2 0 20 6 0'/>
24	</NurbsPositionInterpolator>
25	<!-- ROUTE information for ball node: [from npi.value_changed to set_translation ] --> <Transform DEF='ball'>
26	<Shape>
27	<Appearance>
28	<Material diffuseColor='1 1 0'/>
29	</Appearance>
30	<Sphere/>
31	</Shape>
32	</Transform>
33	<Shape>
34	<NurbsCurve DEF='nc' order='4' tessellation='30' containerField='geometry'>
35	<Coordinate containerField='controlPoint' point='4 6 0 7 12 0 11 6 0 15 2 0 20 6 0'/>
36	</NurbsCurve>
37	<Appearance>
38	<Material emissiveColor='1 1 1'/>
39	</Appearance>
40	</Shape>
41	< ROUTE fromNode='ts' fromField='fraction_changed' toNode='npi' toField='set_fraction'/>
42	< ROUTE fromNode='npi' fromField='value_changed' toNode='ball' toField='set_translation'/>
43	</Scene>
44	</X3D>

<!--

Event Graph ROUTE Table shows event connections.

-->
<!--

DEF nodes index: ball, nc, npi, ts

Index for Viewpoint node: Viewpoint_1

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X3D Tooltips element index: Appearance, component, Coordinate, head, Material, meta, NurbsCurve, NurbsPositionInterpolator, ROUTE, Scene, Shape, Sphere, TimeSensor, Transform, Viewpoint, WorldInfo, X3D, plus documentation for accessType definitions, type definitions, XML data types, and field types

Event Graph ROUTE Table entries 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

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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