{ "X3D": {
    "encoding":"UTF-8",
    "@profile":"Immersive",
    "@version":"3.3",
    "@xsd:noNamespaceSchemaLocation":"https://www.web3d.org/specifications/x3d-3.3.xsd",
    "JSON schema":"https://www.web3d.org/specifications/x3d-4.0-JSONSchema.autogenerated.json",
    "head": {
        "meta": [
          {
            "@name":"title",
            "@content":"BillboardExample.x3d"
          },
          {
            "@name":"description",
            "@content":"Illustrates Billboard operation using Kelp Forest example scenes for Figure 4.4, X3D for Web Authors."
          },
          {
            "@name":"creator",
            "@content":"Don Brutzman and Leonard Daly"
          },
          {
            "@name":"created",
            "@content":"13 June 2004"
          },
          {
            "@name":"modified",
            "@content":"27 July 2024"
          },
          {
            "@name":"info",
            "@content":"Contained Inline scenes each have profile Immersive"
          },
          {
            "@name":"reference",
            "@content":"http://faculty.nps.edu/brutzman/kelp"
          },
          {
            "@name":"reference",
            "@content":"http://faculty.nps.edu/brutzman/kelp/KelpForestDesignPaper.pdf"
          },
          {
            "@name":"subject",
            "@content":"Kelp Forest 3D models"
          },
          {
            "@name":"accessRights",
            "@content":"Revisions Copyright (c) 2006, Daly Realism and Don Brutzman. Original content has permissions for free use. Please provide credit to the Naval Postgraduate School (NPS) Modeling Virtual Environments and Simulation (MOVES) Institute."
          },
          {
            "@name":"identifier",
            "@content":"https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter04ViewingNavigation/BillboardExample.x3d"
          },
          {
            "@name":"generator",
            "@content":"X3D-Edit 4.0, https://www.web3d.org/x3d/tools/X3D-Edit"
          },
          {
            "@name":"license",
            "@content":"../license.html"
          },
          {
            "@name":"translated",
            "@content":"17 April 2026"
          },
          {
            "@name":"generator",
            "@content":"X3dToJson.xslt, https://www.web3d.org/x3d/stylesheets/X3dToJson.html"
          },
          {
            "@name":"reference",
            "@content":"X3D JSON encoding: https://www.web3d.org/wiki/index.php/X3D_JSON_Encoding"
          }
        ]
    },
    "Scene": {
        "-children":[
          { "WorldInfo":
            {
              "@title":"BillboardExample.x3d"
            }
          },
          { "Background":
            {
              "@groundAngle":[1.309,1.5707],
              "@groundColor":[0.1,0.1,0.0,0.4,0.25,0.2,0.6,0.6,0.6],
              "@skyAngle":[1.309,1.5707],
              "@skyColor":[0.0,0.5,1.0,0.0,0.0,1.0,0.0,0.0,1.0]
            }
          },
          { "Viewpoint":
            {
              "@description":"Entry view from ahead, no rotations",
              "@position":[0,-5,45]
            }
          },
          { "Viewpoint":
            {
              "@description":"Observe Billboard effect: text remains visible while navigating around",
              "@orientation":[0,1,0,0.86],
              "@position":[37.01,-5,29.59]
            }
          },
          { "Billboard":
            {
              "@axisOfRotation":[0,1.0,0],
              "-children":[
                { "Inline":
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                    "@url":["../KelpForestExhibit/IntroductionMessage.x3d","https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter04ViewingNavigation/../KelpForestExhibit/IntroductionMessage.x3d","../KelpForestExhibit/IntroductionMessage.wrl","https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/KelpForestExhibit/IntroductionMessage.x3d"]
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                }
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          },
          { "Inline":
            {
              "@url":["../KelpForestExhibit/KelpTank.x3d","https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter04ViewingNavigation/../KelpForestExhibit/KelpTank.x3d","../KelpForestExhibit/KelpTank.wrl","https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/KelpForestExhibit/KelpTank.x3d"]
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        ]
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}