Qt 5.7 | Qt 3D | Qt 3D: Planets QML Example | PlanetsMain.qml Example File

Qt 5.7.1 Reference Documentation

# PlanetsMain.qml Example File

planets-qml/PlanetsMain.qml

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      import QtQuick 2.0
      import QtQuick.Scene3D 2.0

      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 / 11) : 200

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

              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 = 0.5
              }

              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
              }
          }

          ListView {
              id: planetButtonView
              anchors.top: parent.top
              anchors.right: parent.right
              anchors.bottom: parent.bottom
              anchors.rightMargin: planetButtonSize / 5
              anchors.bottomMargin: planetButtonSize / 7
              spacing: planetButtonSize / 7
              width: planetButtonSize * 1.4
              interactive: false
              model: planetModel
              delegate: planetButtonDelegate
          }

          InfoSheet {
              id: info
              width: 400
              anchors.right: planetButtonView.left
              anchors.rightMargin: 10
              opacity: 0.5

              // 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
              }
          }

          StyledSlider {
              id: speedSlider
              anchors.top: parent.top
              anchors.topMargin: 10
              anchors.horizontalCenter: parent.horizontalCenter
              width: sliderLength
              value: 0.2
              minimumValue: 0
              maximumValue: 1
              onValueChanged: solarsystem.changeSpeed(value)
          }
          Text {
              anchors.right: speedSlider.left
              anchors.verticalCenter: speedSlider.verticalCenter
              anchors.rightMargin: 10
              font.family: "Helvetica"
              font.pixelSize: textSize
              font.weight: Font.Light
              color: "white"
              text: "Rotation Speed"
          }

          StyledSlider {
              id: scaleSlider
              anchors.bottom: parent.bottom
              anchors.bottomMargin: 10
              anchors.horizontalCenter: parent.horizontalCenter
              width: sliderLength
              value: 1200
              minimumValue: 1
              maximumValue: 2000
              onValueChanged: solarsystem.changeScale(value, false)
          }
          Text {
              anchors.right: scaleSlider.left
              anchors.verticalCenter: scaleSlider.verticalCenter
              anchors.rightMargin: 10
              font.family: "Helvetica"
              font.pixelSize: textSize
              font.weight: Font.Light
              color: "white"
              text: "Planet Size"
          }

          StyledSlider {
              id: distanceSlider
              anchors.left: parent.left
              anchors.leftMargin: 10
              anchors.verticalCenter: parent.verticalCenter
              orientation: Qt.Vertical
              height: sliderLength
              value: 1
              minimumValue: 1
              maximumValue: 2
              onValueChanged: solarsystem.changeCameraDistance(value)
          }
          Text {
              y: distanceSlider.y + distanceSlider.height + width + 10
              x: distanceSlider.x + 30 - textSize
              transform: Rotation {
                  origin.x: 0
                  origin.y: 0
                  angle: -90
              }
              font.family: "Helvetica"
              font.pixelSize: textSize
              font.weight: Font.Light
              color: "white"
              text: "Viewing Distance"
          }

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

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