<?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=' ViewFrustumExample.x3d '/>
<meta name='description' content='Display view frustum associated with a given pair of Viewpoint and NavigationInfo nodes, illustrating ProtoInstance reuse of a separately declared 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=' ViewFrustumPrototype.x3d '/>
<meta name='drawing' content='ViewFrustumComputation.png'/>
<meta name='Image' content='ViewFrustumOverheadView.png' />
<meta name='Image' content='ViewFrustumObliqueView.png' />
<meta name='Image' content='ViewpointCalculator.png' />
<meta name='Image' content='ViewpointCalculatorComposed.png' />
<meta name='subject' content='view culling frustum'/>
<meta name='identifier' content=' https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter14Prototypes/ViewFrustumExample.x3d '/>
<meta name='generator' content='X3D-Edit 3.3, https://savage.nps.edu/X3D-Edit'/>
<meta name='license' content=' ../license.html'/>
</head>
<!--
to top <!-- Event Graph ROUTE Table shows event connections -->
 
<!-- Index for DEF nodes: CoordinateAxes, GridXZ
Index for Viewpoint nodes: Viewpoint_1, Viewpoint_2, Viewpoint_3, Viewpoint_4, Viewpoint_5 Index for ExternProtoDeclare definition: ViewFrustum
-->
<Scene>
<WorldInfo title='ViewFrustumExample.x3d'/>
<Viewpoint description='ViewFrustum from above, looking down' orientation='1 0 0 -1.57' position='0 40 0'/>
<Viewpoint description='ViewFrustum from point of view'/>
<Viewpoint description='ViewFrustum behind point of view' position='0 0 15'/>
<Viewpoint description='ViewFrustum oblique side view' orientation='0.8005 0.5926 0.0898 -0.3743' position='-5 5 20'/>
<NavigationInfo type='"EXAMINE" "FLY" "ANY"'/>
<ExternProtoDeclare name='ViewFrustum' appinfo='Display view frustum associated with a given pair of Viewpoint NavigationInfo nodes'
  url=' "ViewFrustumPrototype.x3d#ViewFrustum" "https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter14Prototypes/ViewFrustumPrototype.x3d#ViewFrustum" "ViewFrustumPrototype.wrl#ViewFrustum" "https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter14Prototypes/ViewFrustumPrototype.wrl#ViewFrustum" ' >
<field name='ViewpointNode' type='SFNode' accessType='initializeOnly'
 appinfo='required: insert Viewpoint DEF or USE node for view of interest' />
<field name='NavigationInfoNode' type='SFNode' accessType='initializeOnly'
 appinfo='required: insert NavigationInfo DEF or USE node of interest' />
<field name='visible' type='SFBool' accessType='inputOutput'
 appinfo='whether or not frustum geometry is rendered' />
<field name='lineColor' type='SFColor' accessType='inputOutput'
 appinfo='RGB color of ViewFrustum outline, default value 0.9 0.9 0.9' />
<field name='frustumColor' type='SFColor' accessType='inputOutput'
 appinfo='RGB color of ViewFrustum hull geometry, default value 0.8 0.8 0.8' />
<field name='transparency' type='SFFloat' accessType='inputOutput'
 appinfo='transparency of ViewFrustum hull geometry, default value 0.5' />
<field name='aspectRatio' type='SFFloat' accessType='inputOutput'
 appinfo='assumed ratio height/width, default value 0.75' />
<field name='trace' type='SFBool' accessType='initializeOnly'
 appinfo='debug support, default false' />
</ExternProtoDeclare>
<!-- Example use -->
<ProtoInstance name='ViewFrustum'>
<fieldValue name='ViewpointNode'>
<!-- prefer empty description to prevent entry in player's ViewpointList -->
<Viewpoint description='ViewFrustum ViewpointNode'/>
</fieldValue>
<fieldValue name='NavigationInfoNode'>
<NavigationInfo visibilityLimit='15'/>
</fieldValue>
<fieldValue name='visible' value='true'/>
<fieldValue name='lineColor' value='0.9 0.9 0.9'/>
<fieldValue name='frustumColor' value='0.8 0.8 0.8'/>
<fieldValue name='transparency' value='0.75'/>
<fieldValue name='trace' value='true'/>
</ProtoInstance>
<!-- Visualization assists -->
<Inline DEF='GridXZ'
  url=' "../../Savage/Tools/Authoring/GridXZ_20x20Fixed.x3d" "https://savage.nps.edu/Savage/Tools/Authoring/GridXZ_20x20Fixed.x3d" ' />
<Transform scale='5 5 5'>
<Inline DEF='CoordinateAxes'
  url=' "../Chapter03Grouping/CoordinateAxes.x3d" "https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter03Grouping/CoordinateAxes.x3d" ' />
</Transform>
</Scene>
</X3D>
<!--
to top <!-- Event Graph ROUTE Table shows event connections -->
 
<!-- Index for DEF nodes: CoordinateAxes, GridXZ
Index for Viewpoint nodes: Viewpoint_1, Viewpoint_2, Viewpoint_3, Viewpoint_4, Viewpoint_5 Index for ExternProtoDeclare definition: ViewFrustum
-->

Event Graph ROUTE Table with 0 ROUTE 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.


ProtoInstance
ViewFrustum 		No ROUTE connection found for output from this node.
Contains SFNode/MFNode field with indirect access to other nodes. 

-->

<!-- Online at
https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter14Prototypes/ViewFrustumExampleIndex.html -->
<!-- Version control at
https://sourceforge.net/p/x3d/code/HEAD/tree/www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter14Prototypes/ViewFrustumExample.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)
    <ProtoInstance name='ProtoName'> <field name='fieldName'/> </ProtoInstance> -->

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