NurbsCurveExample.x3d (X3dToXhtml listing)

X3D Model Documentation: NurbsCurveExample.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='NurbsCurveExample.x3d'/>
7	<meta name='description' content='NurbsCurve exemplar showing controlPoint animation. Upper example has knot values explicitly defined, lower example has implicit knot values.'/>
8	<meta name='creator' content='Charles Adams, Vincent Marchetti, Don Brutzman'/>
9	<meta name='created' content='4 February 2003'/>
10	<meta name='modified' content='20 October 2019'/>
11	<meta name='MovingImage' content='videos/NurbsCurveExample.mov'/>
12	<meta name=' TODO ' content=' check NurbsCurve containerField handling and weight defaults '/>
13	<meta name='reference' content='http://edocs.nps.edu/npspubs/scholarly/theses/2003/Jun/03Jun_Adams.pdf'/>
14	<meta name='subject' content='NURBS Curve Example'/>
15	<meta name='identifier' content='https://www.web3d.org/x3d/content/examples/Basic/NURBS/NurbsCurveExample.x3d'/>
16	<meta name='generator' content='X3D-Edit 3.3, https://savage.nps.edu/X3D-Edit'/>
17	<meta name='license' content='../license.html'/>
18	</head>

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Event Graph ROUTE Table shows event connections.

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Index for DEF nodes: ci, GridXY_20x20Fixed, GridXY_20x20Fixed_AdjustScale, LightBlueAppearance, LightGreenAppearance, np, NurbsCurveKnotted, NurbsCurveUnknotted, ts

Index for Viewpoint node: Viewpoint_1

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19	<Scene>
20	<WorldInfo title='NurbsCurveExample.x3d'/>
21	<Viewpoint description='NurbsCurve' position='12 7 18'/>
22	<Transform translation='0 5 0'>
23	<Shape>
24	<NurbsCurve DEF='NurbsCurveKnotted' knot='0 0 0 0 0.5 1 1 1 1' order='4' tessellation='30' weight='1 1 1 1 1' containerField='geometry'>
25	<!-- Coordinate np is a DEF node that has 1 USE node: USE_1 <!-- ROUTE information for np node: [from ci.value_changed to set_point ] --> <Coordinate DEF='np' containerField='controlPoint' point='4 6 0 7 12 0 11 6 0 15 2 0 20 6 0'/>
26	</NurbsCurve>
27	<!-- Appearance LightGreenAppearance is a DEF node that has 1 USE node: USE_1 --> <Appearance DEF='LightGreenAppearance'>
28	<Material diffuseColor='0.8 1 0.8' emissiveColor='0.8 1 0.8'/>
29	</Appearance>
30	</Shape>
31	<Transform translation='0 7 0'>
32	<Shape>
33	<Text string='"NurbsCurve with knots"'/>
34	<Appearance USE='LightGreenAppearance'/>
35	</Shape>
36	</Transform>
37	</Transform>
38	<Shape>
39	<NurbsCurve DEF='NurbsCurveUnknotted' order='4' tessellation='30' containerField='geometry'>
40	<Coordinate USE='np' containerField='controlPoint'/>
41	</NurbsCurve>
42	<!-- Appearance LightBlueAppearance is a DEF node that has 1 USE node: USE_1 --> <Appearance DEF='LightBlueAppearance'>
43	<Material diffuseColor='0.8 0.8 1' emissiveColor='0.8 0.8 1'/>
44	</Appearance>
45	</Shape>
46	<Transform translation='0 7 0'>
47	<Shape>
48	<Text string='"NurbsCurve without knots"'/>
49	<Appearance USE='LightBlueAppearance'/>
50	</Shape>
51	</Transform>
52	<!-- ROUTE information for ci node: [from ts.fraction_changed to set_fraction ] [from value_changed to np.set_point ] --> <CoordinateInterpolator DEF='ci' key='0 .5 1' keyValue='4 6 0 7 12 0 11 6 0 15 2 0 20 6 0 4 6 0 7 0 0 11 6 0 15 10 0 20 6 0 4 6 0 7 12 0 11 6 0 15 2 0 20 6 0'/>
53	<!-- ROUTE information for ts node: [from fraction_changed to ci.set_fraction ] --> <TimeSensor DEF='ts' cycleInterval='6' loop='true'/>
54	< ROUTE fromNode='ts' fromField='fraction_changed' toNode='ci' toField='set_fraction'/>
55	< ROUTE fromNode='ci' fromField='value_changed' toNode='np' toField='set_point'/>
56	<!-- Authoring hint -->
57	<Transform DEF='GridXY_20x20Fixed_AdjustScale' translation='12 7 0'>
58	<Inline DEF='GridXY_20x20Fixed' url=' "GridXY_20x20Fixed.x3d" "../../Savage/Tools/Authoring/GridXY_20x20Fixed.x3d" "https://savage.nps.edu/Savage/Tools/Authoring/GridXY_20x20Fixed.x3d" "GridXY_20x20Fixed.wrl" "../../Savage/Tools/Authoring/GridXY_20x20Fixed.wrl" "https://savage.nps.edu/Savage/Tools/Authoring/GridXY_20x20Fixed.wrl" '/>
59	</Transform>
60	</Scene>
61	</X3D>

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Event Graph ROUTE Table shows event connections.

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X3D Tooltips element index: Appearance, component, Coordinate, CoordinateInterpolator, head, Inline, Material, meta, NurbsCurve, ROUTE, Scene, Shape, Text, 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.

ts
TimeSensor
fraction_changed
SFFloat

→
ROUTE
event to
(1)

ci
CoordinateInterpolator
set_fraction
SFFloat

then

ci
CoordinateInterpolator
value_changed
MFVec3f

→
ROUTE
event to
(2)

np
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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