PositionOrientationInterpolatorsExample.x3d (X3dToXhtml listing)

X3D Model Documentation: PositionOrientationInterpolatorsExample.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=' PositionOrientationInterpolatorsExample.x3d '/>
6	<meta name='description' content='Demonstrate use of PositionInterpolator and OrientationInterpolator to animate object motion.'/>
7	<meta name='creator' content='Don Brutzman'/>
8	<meta name='created' content='29 January 2008'/>
9	<meta name='modified' content='20 October 2019'/>
10	<meta name='MovingImage' content=' PositionOrientationInterpolatorsExample.mp4 '/>
11	<meta name='reference' content=' PositionOrientationInterpolatorsExampleTraced.x3d '/>
12	<meta name='reference' content='https://X3dGraphics.com'/>
13	<meta name='reference' content=' https://www.web3d.org/x3d/content/examples/X3dResources.html '/>
14	<meta name='rights' content='Copyright Don Brutzman and Leonard Daly 2007'/>
15	<meta name='subject' content='X3D book, X3D graphics, X3D-Edit, http://www.x3dGraphics.com'/>
16	<meta name='reference' content=' https://savage.nps.edu/Savage/Tools/Animation/WaypointInterpolatorExample.x3d '/>
17	<meta name='identifier' content=' https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter07EventAnimationInterpolation/PositionOrientationInterpolatorsExample.x3d '/>
18	<meta name='generator' content='X3D-Edit 3.3, https://www.web3d.org/x3d/tools/X3D-Edit'/>
19	<meta name='license' content='../license.html'/>
20	</head>

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Event Graph ROUTE Table shows event connections.

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<!--

DEF nodes index: AnimationClock, ConeMaterial, Floor, OrientationAnimator, Pointer, PositionAnimator

Index for Viewpoint nodes: Viewpoint_1, Viewpoint_2

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21	<Scene>
22	<WorldInfo title='PositionOrientationInterpolatorsExample.x3d'/>
23	<Viewpoint description='Animation demo' orientation='1 0 0 -0.588003' position='0 8 12'/>
24	<Viewpoint centerOfRotation='5 0.1 5' description='View from above' orientation='1 0 0 -1.570796' position='0 15 0'/>
25	<!-- ROUTE information for Pointer node: [from PositionAnimator.value_changed to set_translation ] [from OrientationAnimator.value_changed to set_rotation ] --> <Transform DEF='Pointer' translation='1 0 1'>
26	<Transform rotation='1 0 0 1.57'>
27	<Shape>
28	<Cone bottomRadius='0.5' height='1.5'/>
29	<Appearance>
30	<Material DEF='ConeMaterial' diffuseColor='0.427451 1 0.160784'/>
31	</Appearance>
32	</Shape>
33	</Transform>
34	</Transform>
35	<Shape DEF='Floor'>
36	<Box size='12 0.05 12'/>
37	<Appearance>
38	<Material diffuseColor='0 0.262745 0.941176'/>
39	</Appearance>
40	</Shape>
41	<!-- note that final value equals first value in keyValue array in order to support smooth looping -->
42	<!-- first drive around the location -->
43	<!-- ROUTE information for PositionAnimator node: [from AnimationClock.fraction_changed to set_fraction ] [from value_changed to Pointer.set_translation ] --> <PositionInterpolator DEF='PositionAnimator' key='0 0.2 0.25 0.45 0.5 0.7 0.75 0.95 1' keyValue='-4 0 -4 -4 0 4 -4 0 4 4 0 4 4 0 4 4 0 -4 4 0 -4 -4 0 -4 -4 0 -4'/>
44	< ROUTE fromNode='PositionAnimator' fromField='value_changed' toNode='Pointer' toField='set_translation'/>
45	<!-- then rotate the pointer to match next direction while paused at each position -->
46	<!-- ROUTE information for OrientationAnimator node: [from AnimationClock.fraction_changed to set_fraction ] [from value_changed to Pointer.set_rotation ] --> <OrientationInterpolator DEF='OrientationAnimator' key='0 0.2 0.25 0.45 0.5 0.7 0.75 0.95 1' keyValue='0 1 0 0 0 1 0 0 0 1 0 1.57 0 1 0 1.57 0 1 0 3.14 0 1 0 3.14 0 1 0 4.71 0 1 0 4.71 0 1 0 6.283'/>
47	<!-- final rotation value is 2pi rather than 0 so that rotation animation is smooth, not flip-flopping -->
48	< ROUTE fromNode='OrientationAnimator' fromField='value_changed' toNode='Pointer' toField='set_rotation'/>
49	<!-- put TimeSensor clock last so that animation design pattern and ROUTE events flow upward -->
50	<!-- ROUTE information for AnimationClock node: [from fraction_changed to PositionAnimator.set_fraction ] [from fraction_changed to OrientationAnimator.set_fraction ] --> <TimeSensor DEF='AnimationClock' cycleInterval='10' loop='true'/>
51	< ROUTE fromNode='AnimationClock' fromField='fraction_changed' toNode='PositionAnimator' toField='set_fraction'/>
52	< ROUTE fromNode='AnimationClock' fromField='fraction_changed' toNode='OrientationAnimator' toField='set_fraction'/>
53	<!-- notice that explanatory Text is placed later in scene although it is graphically located above driving plane -->
54	<Transform translation='0 4 0'>
55	<Billboard axisOfRotation='0 0 0'>
56	<Shape>
57	<Text string='"Animation using PositionInterpolator" "and OrientationInterpolator"'>
58	<FontStyle justify='"MIDDLE" "MIDDLE"' size='0.6'/>
59	</Text>
60	<Appearance>
61	<Material/>
62	</Appearance>
63	</Shape>
64	</Billboard>
65	</Transform>
66	</Scene>
67	</X3D>

<!--

Event Graph ROUTE Table shows event connections.

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<!--

DEF nodes index: AnimationClock, ConeMaterial, Floor, OrientationAnimator, Pointer, PositionAnimator

Index for Viewpoint nodes: Viewpoint_1, Viewpoint_2

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X3D Tooltips element index: Appearance, Billboard, Box, Cone, FontStyle, head, Material, meta, OrientationInterpolator, PositionInterpolator, ROUTE, Scene, Shape, Text, TimeSensor, Transform, Viewpoint, WorldInfo, X3D, plus documentation for accessType definitions, type definitions, XML data types, and field types

Event Graph ROUTE Table entries with 4 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.

AnimationClock TimeSensor fraction_changed SFFloat	→ ROUTE event to (1)	PositionAnimator PositionInterpolator set_fraction SFFloat	then	PositionAnimator PositionInterpolator value_changed SFVec3f	→ ROUTE event to (2)	Pointer Transform set_translation SFVec3f
AnimationClock TimeSensor fraction_changed SFFloat	→ ROUTE event to (1)	OrientationAnimator OrientationInterpolator set_fraction SFFloat	then	OrientationAnimator OrientationInterpolator value_changed SFRotation	→ ROUTE event to (2)	Pointer Transform set_rotation SFRotation

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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