{ "X3D": {
    "encoding":"UTF-8",
    "@profile":"Interchange",
    "@version":"3.0",
    "@xsd:noNamespaceSchemaLocation":"https://www.web3d.org/specifications/x3d-3.0.xsd",
    "JSON schema":"https://www.web3d.org/specifications/x3d-4.0-JSONSchema.autogenerated.json",
    "head": {
        "meta": [
          {
            "@name":"title",
            "@content":"RotorDisk.x3d"
          },
          {
            "@name":"description",
            "@content":"This file defines a rotor disk that is inlined to create the main rotor group for a helicopter"
          },
          {
            "@name":"creator",
            "@content":"Jane Wu (adapted from the original rotordisk.wrl created for vrtp demo helicopter)"
          },
          {
            "@name":"created",
            "@content":"8 January 2001"
          },
          {
            "@name":"modified",
            "@content":"20 October 2019"
          },
          {
            "@name":"identifier",
            "@content":"https://www.web3d.org/x3d/content/examples/Savage/AircraftHelicopters/HelicopterUnitedStates/RotorDisk.x3d"
          },
          {
            "@name":"generator",
            "@content":"X3D-Edit 3.2, https://www.web3d.org/x3d/tools/X3D-Edit"
          },
          {
            "@name":"license",
            "@content":"../../license.html"
          },
          {
            "@name":"translated",
            "@content":"21 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":"RotorDisk.x3d"
            }
          },
          { "Group":
            {
              "-children":[
                { "Transform":
                  {
                    "@DEF":"MAIN_ROTOR",
                    "-children":[
                      {
                        "#comment":"No rotation or translation, used to group for animation"
                      },
                      { "Transform":
                        {
                          "-children":[
                            { "Shape":
                              {
                                "@DEF":"SHAFT_SHAPE",
                                "-appearance":
                                  { "Appearance":
                                    {
                                      "@DEF":"GRAY",
                                      "-material":
                                        { "Material":
                                          {
                                            "@diffuseColor":[0.75,0.75,0.75]
                                          }
                                        }
                                    }
                                  },
                                "-geometry":
                                  { "Cylinder":
                                    {
                                      "@bottom":false,
                                      "@height":1.50,
                                      "@radius":0.08,
                                      "@top":false
                                    }
                                  }
                              }
                            }
                          ]
                        }
                      },
                      { "Transform":
                        {
                          "-children":[
                            { "Shape":
                              {
                                "@DEF":"ROTOR_DISK_SHAPE",
                                "-appearance":
                                  { "Appearance":
                                    {
                                      "@DEF":"SEMI_TRANSPARENT_WHITE",
                                      "-material":
                                        { "Material":
                                          {
                                            "@diffuseColor":[1.0,1.0,1.0],
                                            "@transparency":0.5
                                          }
                                        }
                                    }
                                  },
                                "-geometry":
                                  { "Cylinder":
                                    {
                                      "@height":0.04,
                                      "@radius":5.5
                                    }
                                  }
                              }
                            }
                          ]
                        }
                      },
                      { "TimeSensor":
                        {
                          "@DEF":"CLOCK",
                          "@cycleInterval":2.0,
                          "@loop":true
                        }
                      },
                      { "OrientationInterpolator":
                        {
                          "@DEF":"MAIN_ROTOR_PATH",
                          "@key":[0.0,1.0],
                          "@keyValue":[0.0,1.0,0.0,0.0,0.0,1.0,0.0,3.142]
                        }
                      }
                    ]
                  }
                }
              ]
            }
          },
          { "ROUTE":
            {
              "@fromField":"fraction_changed",
              "@fromNode":"CLOCK",
              "@toField":"set_fraction",
              "@toNode":"MAIN_ROTOR_PATH"
            }
          },
          { "ROUTE":
            {
              "@fromField":"value_changed",
              "@fromNode":"MAIN_ROTOR_PATH",
              "@toField":"set_rotation",
              "@toNode":"MAIN_ROTOR"
            }
          }
        ]
    }
  }
}