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    "head": {
        "meta": [
          {
            "@name":"title",
            "@content":"TimeSensorChaining.x3d"
          },
          {
            "@name":"description",
            "@content":"Connecting TimeSensor nodes so that the completion of one behavior chain triggers another."
          },
          {
            "@name":"creator",
            "@content":"Don Brutzman and MV3204 class"
          },
          {
            "@name":"created",
            "@content":"2 September 2009"
          },
          {
            "@name":"modified",
            "@content":"27 August 2023"
          },
          {
            "@name":"warning",
            "@content":"under development"
          },
          {
            "@name":"identifier",
            "@content":"https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter07EventAnimationInterpolation/TimeSensorChaining.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"
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          {
            "@name":"reference",
            "@content":"X3D JSON encoding: https://www.web3d.org/wiki/index.php/X3D_JSON_Encoding"
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        ]
    },
    "Scene": {
        "-children":[
          { "WorldInfo":
            {
              "@title":"TimeSensorChaining.x3d"
            }
          },
          { "Viewpoint":
            {
              "@description":"TimeSensor chaining example",
              "@position":[0,1,6]
            }
          },
          { "Transform":
            {
              "@DEF":"DoorHingeTransform",
              "@center":[-0.65,0,0],
              "@translation":[0,1,0],
              "-children":[
                { "TouchSensor":
                  {
                    "@DEF":"UserSelectDoor",
                    "@description":"click to operate door"
                  }
                },
                { "Shape":
                  {
                    "-geometry":
                      { "Box":
                        {
                          "@size":[1.3,2.5,0.08]
                        }
                      },
                    "-appearance":
                      { "Appearance":
                        {
                          "-material":
                            { "Material":
                              {
                                "@DEF":"DoorColor",
                                "@diffuseColor":[1,0,0]
                              }
                            }
                        }
                      }
                  }
                }
              ]
            }
          },
          { "Transform":
            {
              "@scale":[0.6,0.6,0.6],
              "@translation":[0,-1,0],
              "-children":[
                { "Switch":
                  {
                    "@DEF":"TextSwitcher",
                    "@whichChoice":0,
                    "-children":[
                      { "Group":
                        {
                          "-children":[
                            { "Shape":
                              {
                                "-geometry":
                                  { "Text":
                                    {
                                      "@string":["Door is closed"],
                                      "-fontStyle":
                                        { "FontStyle":
                                          {
                                            "@DEF":"MiddleJustify",
                                            "@justify":["MIDDLE","MIDDLE"]
                                          }
                                        }
                                    }
                                  },
                                "-appearance":
                                  { "Appearance":
                                    {
                                      "@DEF":"TextAppearance",
                                      "-material":
                                        { "Material":
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                      },
                      { "Group":
                        {
                          "-children":[
                            { "Shape":
                              {
                                "-geometry":
                                  { "Text":
                                    {
                                      "@string":["Door in motion..."],
                                      "-fontStyle":
                                        { "FontStyle":
                                          {
                                            "@USE":"MiddleJustify"
                                          }
                                        }
                                    }
                                  },
                                "-appearance":
                                  { "Appearance":
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                                      "@USE":"TextAppearance"
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                                  }
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                      },
                      { "Group":
                        {
                          "-children":[
                            { "Shape":
                              {
                                "-geometry":
                                  { "Text":
                                    {
                                      "@string":["Door is open"],
                                      "-fontStyle":
                                        { "FontStyle":
                                          {
                                            "@USE":"MiddleJustify"
                                          }
                                        }
                                    }
                                  },
                                "-appearance":
                                  { "Appearance":
                                    {
                                      "@USE":"TextAppearance"
                                    }
                                  }
                              }
                            }
                          ]
                        }
                      }
                    ]
                  }
                }
              ]
            }
          },
          {
            "#comment":"===== open the door ====="
          },
          { "TimeSensor":
            {
              "@DEF":"Clock1",
              "@cycleInterval":2
            }
          },
          { "ROUTE":
            {
              "@fromField":"touchTime",
              "@fromNode":"UserSelectDoor",
              "@toField":"startTime",
              "@toNode":"Clock1"
            }
          },
          { "OrientationInterpolator":
            {
              "@DEF":"DoorOpener",
              "@key":[0,0.5,1],
              "@keyValue":[0,1,0,0,0,1,0,4.7124,0,1,0,3]
            }
          },
          { "ROUTE":
            {
              "@fromField":"fraction_changed",
              "@fromNode":"Clock1",
              "@toField":"set_fraction",
              "@toNode":"DoorOpener"
            }
          },
          { "ROUTE":
            {
              "@fromField":"value_changed",
              "@fromNode":"DoorOpener",
              "@toField":"rotation",
              "@toNode":"DoorHingeTransform"
            }
          },
          { "IntegerTrigger":
            {
              "@DEF":"SetTextInMotion",
              "@integerKey":1
            }
          },
          { "ROUTE":
            {
              "@fromField":"isActive",
              "@fromNode":"UserSelectDoor",
              "@toField":"set_boolean",
              "@toNode":"SetTextInMotion"
            }
          },
          { "ROUTE":
            {
              "@fromField":"triggerValue",
              "@fromNode":"SetTextInMotion",
              "@toField":"whichChoice",
              "@toNode":"TextSwitcher"
            }
          },
          {
            "#comment":"===== door is now open ====="
          },
          { "BooleanFilter":
            {
              "@DEF":"DoorOpenComplete"
            }
          },
          { "ROUTE":
            {
              "@fromField":"isActive",
              "@fromNode":"Clock1",
              "@toField":"set_boolean",
              "@toNode":"DoorOpenComplete"
            }
          },
          {
            "#comment":"disable Clock1 by turning itself off when complete"
          },
          { "ROUTE":
            {
              "@fromField":"isActive",
              "@fromNode":"Clock1",
              "@toField":"enabled",
              "@toNode":"Clock1"
            }
          },
          { "TimeTrigger":
            {
              "@DEF":"TriggerOpeningAnimation"
            }
          },
          { "ROUTE":
            {
              "@fromField":"inputFalse",
              "@fromNode":"DoorOpenComplete",
              "@toField":"set_boolean",
              "@toNode":"TriggerOpeningAnimation"
            }
          },
          { "TimeSensor":
            {
              "@DEF":"Clock2",
              "@cycleInterval":0.5
            }
          },
          { "ROUTE":
            {
              "@fromField":"triggerTime",
              "@fromNode":"TriggerOpeningAnimation",
              "@toField":"startTime",
              "@toNode":"Clock2"
            }
          },
          { "IntegerTrigger":
            {
              "@DEF":"SetTextOpen",
              "@integerKey":2
            }
          },
          { "ROUTE":
            {
              "@fromField":"inputFalse",
              "@fromNode":"DoorOpenComplete",
              "@toField":"set_boolean",
              "@toNode":"SetTextOpen"
            }
          },
          { "ROUTE":
            {
              "@fromField":"triggerValue",
              "@fromNode":"SetTextOpen",
              "@toField":"whichChoice",
              "@toNode":"TextSwitcher"
            }
          },
          { "ColorInterpolator":
            {
              "@DEF":"DoorColorInterpolator",
              "@key":[0,0.5,1],
              "@keyValue":[1,0,0,0.1,0.1,0.1,0.203922,0.701961,0]
            }
          },
          { "ROUTE":
            {
              "@fromField":"fraction_changed",
              "@fromNode":"Clock2",
              "@toField":"set_fraction",
              "@toNode":"DoorColorInterpolator"
            }
          },
          { "ROUTE":
            {
              "@fromField":"value_changed",
              "@fromNode":"DoorColorInterpolator",
              "@toField":"diffuseColor",
              "@toNode":"DoorColor"
            }
          },
          {
            "#comment":"===== close the door ====="
          },
          { "TimeSensor":
            {
              "@DEF":"Clock3",
              "@cycleInterval":2,
              "@enabled":false
            }
          },
          { "ROUTE":
            {
              "@fromField":"touchTime",
              "@fromNode":"UserSelectDoor",
              "@toField":"startTime",
              "@toNode":"Clock3"
            }
          },
          {
            "#comment":"enable Clock3 once door is fully open"
          },
          { "ROUTE":
            {
              "@fromField":"inputFalse",
              "@fromNode":"DoorOpenComplete",
              "@toField":"enabled",
              "@toNode":"Clock3"
            }
          },
          {
            "#comment":"disable Clock3 by turning itself off when complete"
          },
          { "ROUTE":
            {
              "@fromField":"isActive",
              "@fromNode":"Clock3",
              "@toField":"enabled",
              "@toNode":"Clock3"
            }
          },
          { "ScalarInterpolator":
            {
              "@DEF":"ClockReversal",
              "@key":[0,1],
              "@keyValue":[1,0]
            }
          },
          { "ROUTE":
            {
              "@fromField":"fraction_changed",
              "@fromNode":"Clock3",
              "@toField":"set_fraction",
              "@toNode":"ClockReversal"
            }
          },
          { "ROUTE":
            {
              "@fromField":"value_changed",
              "@fromNode":"ClockReversal",
              "@toField":"set_fraction",
              "@toNode":"DoorOpener"
            }
          },
          { "ROUTE":
            {
              "@fromField":"value_changed",
              "@fromNode":"ClockReversal",
              "@toField":"set_fraction",
              "@toNode":"DoorColorInterpolator"
            }
          },
          {
            "#comment":"enable Clock1 when door is fully closed"
          },
          { "BooleanTrigger":
            {
              "@DEF":"Clock3CompleteTrigger"
            }
          },
          { "ROUTE":
            {
              "@fromField":"stopTime",
              "@fromNode":"Clock3",
              "@toField":"set_triggerTime",
              "@toNode":"Clock3CompleteTrigger"
            }
          },
          { "IntegerTrigger":
            {
              "@DEF":"SetTextClosed",
              "@integerKey":0
            }
          },
          { "ROUTE":
            {
              "@fromField":"triggerTrue",
              "@fromNode":"Clock3CompleteTrigger",
              "@toField":"set_boolean",
              "@toNode":"SetTextClosed"
            }
          },
          { "ROUTE":
            {
              "@fromField":"triggerValue",
              "@fromNode":"SetTextClosed",
              "@toField":"whichChoice",
              "@toNode":"TextSwitcher"
            }
          }
        ]
    }
  }
}