<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE X3D PUBLIC "ISO//Web3D//DTD X3D 3.3//EN" "https://www.web3d.org/specifications/x3d-3.3.dtd">
<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 '>
<head>
<meta name='title' content='ViewFrustumPrototype.x3d'/>
<meta name='description' content='Define a view frustum associated with a given pair of Viewpoint and NavigationInfo nodes, provided as a reusable prototype.'/>
<meta name='creator' content='Don Brutzman'/>
<meta name='translated' content='16 August 2008'/>
<meta name='modified' content='20 October 2019'/>
<meta name='reference' content='ViewFrustumExample.x3d'/>
<meta name='drawing' content='ViewFrustumComputation.png'/>
<meta name='Image' content='ViewFrustumOverheadView.png'/>
<meta name='Image' content='ViewFrustumObliqueView.png'/>
<meta name='subject' content='view culling frustum'/>
<meta name='identifier' content=' https://X3dGraphics.com/examples/X3dForWebAuthors/Chapter14Prototypes/ViewFrustumPrototype.x3d '/>
<meta name='generator' content='X3D-Edit 3.3, https://savage.nps.edu/X3D-Edit'/>
<meta name='license' content=' ../license.html'/>
</head>
<!--
Index for ProtoDeclare definition : ViewFrustum
Index for DEF nodes : FrustumAppearance, FrustumCoordinate, FrustumExtrusion, FrustumLines, GeometryComputationScript, OrientationTransform, PositionTransform, VisibilitySwitch
-->
<Scene>
<WorldInfo title='ViewFrustumPrototype.x3d'/>
<ProtoDeclare name='ViewFrustum' appinfo='Display view frustum associated with a given pair of Viewpoint NavigationInfo nodes'>
<ProtoInterface>
<field name='ViewpointNode' type='SFNode' accessType='initializeOnly'
 appinfo='required: insert Viewpoint DEF or USE node for view of interest'>
<!-- NULL node, ProtoInstance must provide -->
</field>
<field name='NavigationInfoNode' type='SFNode' accessType='initializeOnly'
 appinfo='required: insert NavigationInfo DEF or USE node of interest'>
<!-- NULL node, ProtoInstance must provide -->
</field>
<field name='visible' type='SFBool' value='true' accessType='inputOutput'
 appinfo='whether or not frustum geometry is rendered'/>
<field name='lineColor' type='SFColor' value='0.9 0.9 0.9' accessType='inputOutput'
 appinfo='RGB color of ViewFrustum outline, default value 0.9 0.9 0.9'/>
<field name='frustumColor' type='SFColor' value='0.8 0.8 0.8' accessType='inputOutput'
 appinfo='RGB color of ViewFrustum hull geometry, default value 0.8 0.8 0.8'/>
<field name='transparency' type='SFFloat' value='0.5' accessType='inputOutput'
 appinfo='transparency of ViewFrustum hull geometry, default value 0.5'/>
<field name='aspectRatio' type='SFFloat' value='0.75' accessType='inputOutput'
 appinfo='assumed ratio height/width, default value 0.75'/>
<field name='trace' type='SFBool' value='false' accessType='initializeOnly'
 appinfo='debug support, default false'/>
</ProtoInterface>
<ProtoBody>
<!-- ROUTE information for VisibilitySwitch node:  [from GeometryComputationScript.visibilitySwitchSelection to whichChoice ] -->
 <Switch DEF='VisibilitySwitch' whichChoice='-1'>
<!-- ROUTE information for PositionTransform node:  [from GeometryComputationScript.position_changed to translation ] -->
 <Transform DEF='PositionTransform' rotation='0 1 0 3.14159'>
<!-- ROUTE information for OrientationTransform node:  [from GeometryComputationScript.orientation_changed to rotation ] -->
 <Transform DEF='OrientationTransform'>
<Shape>
<IndexedLineSet DEF='FrustumLines' coordIndex='0 1 2 3 0 -1 4 5 6 7 4 -1 0 4 -1 1 5 -1 2 6 -1 3 7 -1'>
<!-- ROUTE information for FrustumCoordinate node:  [from GeometryComputationScript.point_changed to point ] -->
 <Coordinate DEF='FrustumCoordinate' point='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0'/>
</IndexedLineSet>
<Appearance>
<Material>
<IS>
<connect nodeField='emissiveColor' protoField='lineColor'/>
</IS>
</Material>
</Appearance>
</Shape>
<Shape>
<!-- ROUTE information for FrustumExtrusion node:  [from GeometryComputationScript.spine_changed to set_spine ] [from GeometryComputationScript.scale_changed to set_scale ] -->
 <Extrusion DEF='FrustumExtrusion'/>
<Appearance DEF='FrustumAppearance'>
<Material>
<IS>
<connect nodeField='diffuseColor' protoField='frustumColor'/>
<connect nodeField='transparency' protoField='transparency'/>
</IS>
</Material>
</Appearance>
</Shape>
<Shape>
<Sphere radius='0.08'/>
<Appearance USE='FrustumAppearance'/>
</Shape>
</Transform>
</Transform>
</Switch>
<!-- ROUTE information for GeometryComputationScript node:  [from visibilitySwitchSelection to VisibilitySwitch.whichChoice ] [from position_changed to PositionTransform.translation ] [from orientation_changed to OrientationTransform.rotation ] [from spine_changed to FrustumExtrusion.set_spine ] [from scale_changed to FrustumExtrusion.set_scale ] [from point_changed to FrustumCoordinate.point ] -->
 <Script DEF='GeometryComputationScript' directOutput='true'
  url=' "ViewFrustumPrototypeScript.js" "https://X3dGraphics.com/examples/X3dForWebAuthors/Chapter14Prototypes/ViewFrustumPrototypeScript.js" '>
<field name='visible' type='SFBool' accessType='inputOutput'
 appinfo='Whether or not frustum geometry is rendered'/>
<field name='visibilitySwitchSelection' type='SFInt32' accessType='outputOnly'
 appinfo='Adjust Switch selection to make geometry visible or not'/>
<field name='ViewpointNode' type='SFNode' accessType='initializeOnly'>
<!-- initialization node (if any) goes here -->
</field>
<field name='NavigationInfoNode' type='SFNode' accessType='initializeOnly'>
<!-- initialization node (if any) goes here -->
</field>
<field name='FrustumCoordinate' type='SFNode' accessType='initializeOnly'>
<Coordinate USE='FrustumCoordinate'/>
</field>
<field name='FrustumExtrusion' type='SFNode' accessType='initializeOnly'>
<Extrusion USE='FrustumExtrusion'/>
</field>
<field name='recompute' type='SFBool' accessType='inputOnly'/>
<field name='aspectRatio' type='SFFloat' accessType='inputOutput'
 appinfo='assumed ratio height/width'/>
<field name='position_changed' type='SFVec3f' accessType='outputOnly'/>
<field name='orientation_changed' type='SFRotation' accessType='outputOnly'/>
<field name='spine_changed' type='MFVec3f' accessType='outputOnly'/>
<field name='scale_changed' type='MFVec2f' accessType='outputOnly'/>
<field name='point_changed' type='MFVec3f' accessType='outputOnly'/>
<field name='trace' type='SFBool' accessType='initializeOnly'/>
<IS>
<connect nodeField='visible' protoField='visible'/>
<connect nodeField='ViewpointNode' protoField='ViewpointNode'/>
<connect nodeField='NavigationInfoNode' protoField='NavigationInfoNode'/>
<connect nodeField='aspectRatio' protoField='aspectRatio'/>
<connect nodeField='trace' protoField='trace'/>
</IS>
</Script>
<ROUTE fromNode='GeometryComputationScript' fromField='visibilitySwitchSelection' toNode='VisibilitySwitch' toField='whichChoice'/>
<ROUTE fromNode='GeometryComputationScript' fromField='position_changed' toNode='PositionTransform' toField='translation'/>
<ROUTE fromNode='GeometryComputationScript' fromField='orientation_changed' toNode='OrientationTransform' toField='rotation'/>
<ROUTE fromNode='GeometryComputationScript' fromField='spine_changed' toNode='FrustumExtrusion' toField='set_spine'/>
<ROUTE fromNode='GeometryComputationScript' fromField='scale_changed' toNode='FrustumExtrusion' toField='set_scale'/>
<ROUTE fromNode='GeometryComputationScript' fromField='point_changed' toNode='FrustumCoordinate' toField='point'/>
</ProtoBody>
</ProtoDeclare>
<!-- Example use is in separate scene -->
<Anchor description='ViewFrustum Example'
  url=' "ViewFrustumExample.x3d" "https://X3dGraphics.com/examples/X3dForWebAuthors/Chapter14Prototypes/ViewFrustumExample.x3d" "ViewFrustumExample.wrl" "https://X3dGraphics.com/examples/X3dForWebAuthors/Chapter14Prototypes/ViewFrustumExample.wrl" '>
<Shape>
<Appearance>
<Material diffuseColor='0.8 0.4 0'/>
</Appearance>
<Text string='"ViewFrustumPrototype.x3d" "is a Prototype declaration file." "For an example scene using the prototype," "click this text and view" "ViewFrustumExample.x3d"'>
<FontStyle justify='"MIDDLE" "MIDDLE"' size='0.8'/>
</Text>
</Shape>
</Anchor>
</Scene>
</X3D>
<!--
Index for ProtoDeclare definition : ViewFrustum
Index for DEF nodes : FrustumAppearance, FrustumCoordinate, FrustumExtrusion, FrustumLines, GeometryComputationScript, OrientationTransform, PositionTransform, VisibilitySwitch
-->

<!-- Color key: <X3dNode DEF='idName' field='value'/> matches <XmlElement DEF='idName' attribute='value'/>
(Light blue background: behavior node) (Grey background: inserted documentation) (Magenta background: X3D Extensibility)
    <Prototype name='ProtoName'> <field name='fieldName'/> </Prototype> -->

<!-- For additional help information about X3D scenes, please see X3D Tooltips, X3D Resources and X3D Scene Authoring Hints. -->