<?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=' HeadsUpDisplayExample.x3d '/>
<meta name='description' content='Prototype definition that demonstrates use of a simple HeadsUpDisplay (HUD) prototype that maintains a stable position for its children on the screen.'/>
<meta name='creator' content='Leonard Daly and Don Brutzman'/>
<meta name='created' content='15 July 2006'/>
<meta name='modified' content='20 October 2019'/>
<meta name='reference' content=' HeadsUpDisplayPrototype.x3d '/>
<meta name='reference' content=' https://X3dGraphics.com '/>
<meta name='reference' content=' https://www.web3d.org/x3d/content/examples/X3dResources.html '/>
<meta name='rights' content='Copyright 2006, Daly Realism and Don Brutzman'/>
<meta name='subject' content=' X3D book, X3D graphics, X3D-Edit, http://www.x3dGraphics.com '/>
<meta name='identifier' content=' https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter14Prototypes/HeadsUpDisplayExample.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: HeadsUpDisplayInstance, SandyShallowBottom
Index for Viewpoint node: Viewpoint_1 Index for ExternProtoDeclare definition: HeadsUpDisplay
-->
<Scene>
<!-- Simple Heads-Up Display (HUD) Prototype\n \n Manages the display of a HUD and maintains its position on the screen.\n Changes to fieldOfView (in Viewpoint node) will change screen position\n \n Fields:\n hudSize Size of HUD (initializeOnly - SFVec3f) default="1 1 .01"\n hudColor Color of HUD (inputOutput - SFColor) default="1 1 1"\n screenOffset Offset of HUD. This field positions the HUD on the display screen (inputOutput - SFVec3f) default="0 0 0"\n hudGeometry Geometry to be placed on the HUD. Origin is center of HUD. (inputOutput - MFNode) default = []\n position_changed Current viewer location (outputOnly - SFVec3f)\n orientation_changed Current viewer orientation (outputOnly - SFRotation)\n \n \n -->
<WorldInfo title='HeadsUpDisplayExample.x3d'/>
<ExternProtoDeclare name='HeadsUpDisplay' appinfo='Heads-up display (HUD) keeps child geometry aligned on screen in a consistent location'
  url=' "HeadsUpDisplayPrototype.x3d#HeadsUpDisplay" "https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter14Prototypes/HeadsUpDisplayPrototype.x3d#HeadsUpDisplay" "HeadsUpDisplayPrototype.wrl#HeadsUpDisplay" "https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter14Prototypes/HeadsUpDisplayPrototype.wrl#HeadsUpDisplay" ' >
<field name='screenOffset' type='SFVec3f' accessType='inputOutput'
 appinfo='offset position for HUD relative to current view location, default 0 0 -5' />
<field name='children' type='MFNode' accessType='inputOutput'
 appinfo='X3D content positioned at HUD offset' />
<field name='position_changed' type='SFVec3f' accessType='outputOnly'
 appinfo='HUD position update (in world coordinates) relative to original location' />
<field name='orientation_changed' type='SFRotation' accessType='outputOnly'
 appinfo='HUD orientation update relative to original location' />
</ExternProtoDeclare>
<Background DEF='SandyShallowBottom' groundAngle='0.05 1.52 1.56 1.5707' groundColor='0.2 0.2 0 0.3 0.3 0 0.5 0.5 0.3 0.1 0.3 0.4 0 0.2 0.4' skyAngle='0.04 0.05 0.1 1.309 1.570' skyColor='0.8 0.8 0.2 0.8 0.8 0.2 0.1 0.1 0.6 0.1 0.1 0.6 0.1 0.25 0.8 0.6 0.6 0.9'/>
<Viewpoint description='Heads-up display (HUD)'/>
<!-- ProtoDeclare is the "cookie cutter"
template, ProtoInstance creates an actual occurrence -->
<ProtoInstance name='HeadsUpDisplay' DEF='HeadsUpDisplayInstance'>
<!-- example: upper left-hand corner of screen (x=-2, y=1) and set back z=-5 from user view -->
<fieldValue name='screenOffset' value='-0.75 1 -5'/>
<fieldValue name='children'>
<Shape>
<Text string='"HUD text stays fixed" "while user navigates"'>
<FontStyle justify='"MIDDLE" "MIDDLE"' size='0.3'/>
</Text>
<Appearance>
<Material diffuseColor='0.894118 0.819608 1'/>
</Appearance>
</Shape>
</fieldValue>
</ProtoInstance>
<Inline
  url=' "../HelloWorld.x3d" "https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/HelloWorld.x3d" "../HelloWorld.wrl" "https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/HelloWorld.wrl" ' />
</Scene>
</X3D>
<!--
to top <!-- Event Graph ROUTE Table shows event connections -->
 
<!-- Index for DEF nodes: HeadsUpDisplayInstance, SandyShallowBottom
Index for Viewpoint node: Viewpoint_1 Index for ExternProtoDeclare definition: HeadsUpDisplay
-->

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.

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

-->

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<!-- 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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