Qt 5.9 | Qt 3D | Qt 3D: Planets QML Example | PlanetsMain.qml Example File

Qt 5.9.9 Reference Documentation

# PlanetsMain.qml Example File

planets-qml/PlanetsMain.qml

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      import QtQuick 2.0
      import QtQuick.Window 2.2
      import QtQuick.Scene3D 2.0
      import "planets.js" as Planets

      Item {
          id: mainview
          width: 1280
          height: 768
          visible: true
          property int focusedPlanet: 100
          property int oldPlanet: 0
          property int frames: 0
          property int sliderLength: (width < height) ? width / 2 : height / 2
          property real textSize: sliderLength / 20
          property real planetButtonSize: (height < 2200) ? (height / 13) : 200

          Connections {
              target: networkController

              onCommandAccepted: {
                  var focusedItem = mainview.Window.window.activeFocusItem
                  if (focusedItem && focusedItem.panningEnabled) {
                      focusedItem.panningEnabled = false
                  }

                  switch (command) {
                  case "selectPlanet":
                      mainview.focusedPlanet = Planets.planetId(decodeURIComponent(value))
                      planetButtonView.forceActiveFocus()
                      planetButtonView.currentIndex = Planets.planetIndex(value)
                      break
                  case "setRotationSpeed":
                      rotationSpeedSlider.forceActiveFocus()
                      rotationSpeedSlider.value = rotationSpeedSlider.minimumValue +
                              ((rotationSpeedSlider.maximumValue - rotationSpeedSlider.minimumValue) * value)
                      break
                  case "setViewingDistance":
                      viewingDistanceSlider.forceActiveFocus()
                      viewingDistanceSlider.value = viewingDistanceSlider.minimumValue +
                              ((viewingDistanceSlider.maximumValue - viewingDistanceSlider.minimumValue) * value)
                      break
                  case "setPlanetSize":
                      planetSizeSlider.forceActiveFocus()
                      planetSizeSlider.value = planetSizeSlider.minimumValue +
                              ((planetSizeSlider.maximumValue - planetSizeSlider.minimumValue) * value)
                      break
                  }
              }
          }

          Scene3D {
              anchors.fill: parent
              aspects: ["render", "logic", "input"]

              SolarSystem { id: solarsystem }
          }

          MouseArea {
              anchors.fill: parent
              acceptedButtons: Qt.LeftButton
              onClicked:
                  focusedPlanet = 100
          }

          onFocusedPlanetChanged: {
              if (focusedPlanet == 100) {
                  info.opacity = 0
                  updatePlanetInfo()
              } else {
                  updatePlanetInfo()
                  info.opacity = 1
              }

              solarsystem.changePlanetFocus(oldPlanet, focusedPlanet)
              oldPlanet = focusedPlanet
          }

          ListModel {
              id: planetModel

              ListElement {
                  name: "Sun"
                  radius: "109 x Earth"
                  temperature: "5 778 K"
                  orbitalPeriod: ""
                  distance: ""
                  planetImageSource: "qrc:/images/sun.png"
                  planetNumber: 0
              }
              ListElement {
                  name: "Mercury"
                  radius: "0.3829 x Earth"
                  temperature: "80-700 K"
                  orbitalPeriod: "87.969 d"
                  distance: "0.387 098 AU"
                  planetImageSource: "qrc:/images/mercury.png"
                  planetNumber: 1
              }
              ListElement {
                  name: "Venus"
                  radius: "0.9499 x Earth"
                  temperature: "737 K"
                  orbitalPeriod: "224.701 d"
                  distance: "0.723 327 AU"
                  planetImageSource: "qrc:/images/venus.png"
                  planetNumber: 2
              }
              ListElement {
                  name: "Earth"
                  radius: "6 378.1 km"
                  temperature: "184-330 K"
                  orbitalPeriod: "365.256 d"
                  distance: "149598261 km (1 AU)"
                  planetImageSource: "qrc:/images/earth.png"
                  planetNumber: 3
              }
              ListElement {
                  name: "Mars"
                  radius: "0.533 x Earth"
                  temperature: "130-308 K"
                  orbitalPeriod: "686.971 d"
                  distance: "1.523679 AU"
                  planetImageSource: "qrc:/images/mars.png"
                  planetNumber: 4
              }
              ListElement {
                  name: "Jupiter"
                  radius: "11.209 x Earth"
                  temperature: "112-165 K"
                  orbitalPeriod: "4332.59 d"
                  distance: "5.204267 AU"
                  planetImageSource: "qrc:/images/jupiter.png"
                  planetNumber: 5
              }
              ListElement {
                  name: "Saturn"
                  radius: "9.4492 x Earth"
                  temperature: "84-134 K"
                  orbitalPeriod: "10759.22 d"
                  distance: "9.5820172 AU"
                  planetImageSource: "qrc:/images/saturn.png"
                  planetNumber: 6
              }
              ListElement {
                  name: "Uranus"
                  radius: "4.007 x Earth"
                  temperature: "49-76 K"
                  orbitalPeriod: "30687.15 d"
                  distance: "19.189253 AU"
                  planetImageSource: "qrc:/images/uranus.png"
                  planetNumber: 7
              }
              ListElement {
                  name: "Neptune"
                  radius: "3.883 x Earth"
                  temperature: "55-72 K"
                  orbitalPeriod: "60190.03 d"
                  distance: "30.070900 AU"
                  planetImageSource: "qrc:/images/neptune.png"
                  planetNumber: 8
              }
              ListElement {
                  name: "Solar System"
                  planetImageSource: ""
                  planetNumber: 100 // Defaults to solar system
              }
          }

          Component {
              id: planetButtonDelegate
              PlanetButton {
                  source: planetImageSource
                  text: name
                  focusPlanet: planetNumber
                  planetSelector: mainview
                  buttonSize: planetButtonSize
                  fontSize: textSize

                  scale: activeFocus ? 1.4 : 1.0

                  Behavior on scale {
                      PropertyAnimation {
                          duration: 200
                      }
                  }

                  signal swipeUp()
                  signal swipeDown()
                  signal swipeLeft()

                  onSwipeUp: {
                      if (planetButtonView.currentIndex > 0) {
                          planetButtonView.currentIndex--
                      } else {
                          rotationSpeedSlider.forceActiveFocus()
                      }
                  }

                  onSwipeDown: {
                      if (planetButtonView.currentIndex < planetButtonView.count - 1) {
                          planetButtonView.currentIndex++
                      } else {
                          planetSizeSlider.forceActiveFocus()
                      }
                  }

                  onSwipeLeft: {
                      if (index <= planetButtonView.count / 2) {
                          rotationSpeedSlider.forceActiveFocus()
                      } else {
                          planetSizeSlider.forceActiveFocus()
                      }
                  }

                  Keys.onPressed: {
                      if (event.key === Qt.Key_Select) {
                          planetSelector.focusedPlanet = focusPlanet
                      }
                  }
              }
          }

          ListView {
              id: planetButtonView
              anchors.verticalCenter: parent.verticalCenter
              anchors.right: parent.right
              anchors.rightMargin: planetButtonSize / 2
              height: childrenRect.height
              spacing: planetButtonSize / 6
              width: planetButtonSize * 1.4
              interactive: false
              model: planetModel
              delegate: planetButtonDelegate
          }

          InfoSheet {
              id: info
              width: 400
              anchors.right: planetButtonView.left
              anchors.rightMargin: 40
              opacity: 1

              // Set initial information for Solar System
              planet: "Solar System"
              exampleDetails: "This example shows a 3D model of the Solar</p>" +
                              "<p>System comprised of the Sun and the eight</p>" +
                              "<p>planets orbiting the Sun.</p></br>" +
                              "<p>The example is implemented using Qt3D.</p>" +
                              "<p>The textures and images used in the example</p>" +
                              "<p>are Copyright (c) by James Hastings-Trew,</p>" +
                              "<a href=\"http://planetpixelemporium.com/planets.html\">" +
                              "http://planetpixelemporium.com/planets.html</a>"
          }

          function updatePlanetInfo() {
              info.width = 200

              if (focusedPlanet !== 100) {
                  info.planet = planetModel.get(focusedPlanet).name
                  info.radius = planetModel.get(focusedPlanet).radius
                  info.temperature = planetModel.get(focusedPlanet).temperature
                  info.orbitalPeriod = planetModel.get(focusedPlanet).orbitalPeriod
                  info.distance = planetModel.get(focusedPlanet).distance
              }
          }

          Row {
              anchors.top: parent.top
              anchors.topMargin: 10
              anchors.horizontalCenter: parent.horizontalCenter

              spacing: 10
              scale: rotationSpeedSlider.activeFocus ? 1.4 : 1.0
              opacity: rotationSpeedSlider.activeFocus ? 1.0 : 0.5

              Behavior on scale {
                  PropertyAnimation {
                      duration: 200
                  }
              }

              Text {
                  anchors.verticalCenter: parent.verticalCenter

                  font.family: "Helvetica"
                  font.pixelSize: textSize
                  font.weight: Font.Light
                  color: rotationSpeedSlider.panningEnabled ? "#80c342" : "#ffffff"
                  text: "Rotation Speed"
              }

              StyledSlider {
                  id: rotationSpeedSlider
                  anchors.verticalCenter: parent.verticalCenter
                  width: sliderLength
                  value: 0.2
                  minimumValue: 0
                  maximumValue: 1
                  onValueChanged: solarsystem.changeSpeed(value)

                  focus: Qt.platform.os === "tvos" ? true : false

                  property bool panningEnabled: false
                  signal swipeDown()
                  signal swipeLeft()
                  signal swipeRight()
                  signal pannedHorizontally(real p)
                  signal pannedVertically(real p)

                  onSwipeDown: {
                      planetSizeSlider.forceActiveFocus()
                  }

                  onSwipeLeft: {
                      viewingDistanceSlider.forceActiveFocus()
                  }

                  onSwipeRight: {
                      planetButtonView.currentIndex = 0
                      planetButtonView.forceActiveFocus()
                  }

                  onPannedHorizontally: {
                      var step = (maximumValue - minimumValue) / 30

                      if (p > 0) {
                          value += step
                      } else {
                          value -= step
                      }
                  }

                  Keys.onPressed: {
                      if (event.key === Qt.Key_Select) {
                          panningEnabled = !panningEnabled
                      }
                  }
              }
          }

          Column {
              anchors.left: parent.left
              anchors.leftMargin: 30
              anchors.verticalCenter: parent.verticalCenter

              spacing: 10
              scale: viewingDistanceSlider.activeFocus ? 1.4 : 1.0
              opacity: viewingDistanceSlider.activeFocus ? 1.0 : 0.5

              Behavior on scale {
                  PropertyAnimation {
                      duration: 200
                  }
              }

              StyledSlider {
                  id: viewingDistanceSlider

                  anchors.horizontalCenter: parent.horizontalCenter
                  orientation: Qt.Vertical
                  height: sliderLength
                  value: 1
                  minimumValue: 1
                  maximumValue: 2
                  onValueChanged: solarsystem.changeCameraDistance(value)

                  property bool panningEnabled: false
                  signal swipeUp()
                  signal swipeDown()
                  signal swipeRight()
                  signal pannedHorizontally(real p)
                  signal pannedVertically(real p)

                  onSwipeUp: {
                      rotationSpeedSlider.forceActiveFocus()
                  }

                  onSwipeDown: {
                      planetSizeSlider.forceActiveFocus()
                  }

                  onSwipeRight: {
                      planetButtonView.currentIndex = 0
                      planetButtonView.forceActiveFocus()
                  }

                  onPannedVertically: {
                      var step = (maximumValue - minimumValue) / 30

                      if (p > 0) {
                          value += step
                      } else {
                          value -= step
                      }
                  }

                  Keys.onPressed: {
                      if (event.key === Qt.Key_Select) {
                          panningEnabled = !panningEnabled
                      }
                  }
              }

              Text {
                  anchors.horizontalCenter: parent.horizontalCenter

                  font.family: "Helvetica"
                  font.pixelSize: textSize
                  font.weight: Font.Light
                  color: viewingDistanceSlider.panningEnabled ? "#80c342" : "#ffffff"
                  text: "Viewing\nDistance"
              }
          }

          Row {
              anchors.bottom: parent.bottom
              anchors.bottomMargin: 10
              anchors.horizontalCenter: parent.horizontalCenter

              spacing: 10
              scale: planetSizeSlider.activeFocus ? 1.4 : 1.0
              opacity: planetSizeSlider.activeFocus ? 1.0 : 0.5

              Behavior on scale {
                  PropertyAnimation {
                      duration: 200
                  }
              }

              Text {
                  anchors.verticalCenter: parent.verticalCenter
                  font.family: "Helvetica"
                  font.pixelSize: textSize
                  font.weight: Font.Light
                  color: planetSizeSlider.panningEnabled ? "#80c342" : "#ffffff"
                  text: "Planet Size"
              }

              StyledSlider {
                  id: planetSizeSlider
                  anchors.verticalCenter: parent.verticalCenter
                  width: sliderLength
                  value: 1200
                  minimumValue: 1
                  maximumValue: 2000
                  onValueChanged: solarsystem.changeScale(value, false)

                  property bool panningEnabled: false
                  signal swipeUp()
                  signal swipeLeft()
                  signal swipeRight()
                  signal pannedHorizontally(real p)
                  signal pannedVertically(real p)

                  onSwipeUp: {
                      rotationSpeedSlider.forceActiveFocus()
                  }

                  onSwipeLeft: {
                      viewingDistanceSlider.forceActiveFocus()
                  }

                  onSwipeRight: {
                      planetButtonView.currentIndex = planetButtonView.count - 1
                      planetButtonView.forceActiveFocus()
                  }

                  onPannedHorizontally: {
                      var step = (maximumValue - minimumValue) / 30

                      if (p > 0) {
                          value += step
                      } else {
                          value -= step
                      }
                  }

                  Keys.onPressed: {
                      if (event.key === Qt.Key_Select) {
                          panningEnabled = !panningEnabled
                      }
                  }
              }
          }

          // FPS display, initially hidden, clicking will show it
          FpsDisplay {
              id: fpsDisplay
              anchors.left: parent.left
              anchors.bottom: parent.bottom
              width: 32
              height: 64
              hidden: true
          }

          Timer {
              interval: 1000
              repeat: true
              running: !fpsDisplay.hidden
              onTriggered: {
                  fpsDisplay.fps = frames
                  frames = 0
              }
              onRunningChanged: frames = 0
          }

          Loader {
              anchors.fill: parent

              source: Qt.platform.os === "tvos" ? "AppleTVInput.qml" : ""
          }
      }