Qt 5.9 | Qt Canvas 3D | JSON Models Example | jsonmodels.qml Example File

Qt 5.9.2 Reference Documentation

# jsonmodels.qml Example File

jsonmodels/qml/jsonmodels/jsonmodels.qml

      /****************************************************************************
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      ** This file is part of the QtCanvas3D module of the Qt Toolkit.
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      import QtQuick 2.2
      import QtQuick.Window 2.1
      import QtCanvas3D 1.0
      import QtQuick.Controls 1.1
      import QtQuick.Layouts 1.1

      import "jsonmodels.js" as GLCode

      Window {
          visible: true
          width: 1200
          height: 900
          color: "#e6e6e6"

          property int previousY: 0
          property int previousX: 0

          Rectangle {
              id: valuePanel
              width: 150
              height: 100
              anchors.left: parent.left
              anchors.top: parent.top
              opacity: 0.3
              border.color: "black"
              border.width: 2
              radius: 5
              z: 1
          }
          ColumnLayout {
              width: valuePanel.width
              height: valuePanel.height
              x: 10
              z: 2
              Label {
                  font.pixelSize: 20
                  text: "x angle: " + angle
                  readonly property int angle: canvas3d.xRot
              }
              Label {
                  font.pixelSize: 20
                  text: "y angle: " + angle
                  readonly property int angle: canvas3d.yRot
              }
              Label {
                  font.pixelSize: 20
                  text: "distance: " + distance
                  readonly property int distance: canvas3d.distance * 10
              }
          }

          ColumnLayout {
              anchors.fill: parent
              RowLayout {
                  Layout.fillHeight: true
                  Layout.fillWidth: true
                  Canvas3D {
                      id: canvas3d
                      Layout.fillHeight: true
                      Layout.fillWidth: true
                      property double xRot: 0.0
                      property double yRot: 45.0
                      property double distance: 2.0
                      property double itemSize: 1.0
                      property double lightX: 0.0
                      property double lightY: 45.0
                      property double lightDistance: 2.0
                      property bool animatingLight: false
                      property bool animatingCamera: false
                      property bool drawWireframe: false

                      onInitializeGL: {
                          GLCode.initializeGL(canvas3d);
                      }

                      onPaintGL: {
                          GLCode.paintGL(canvas3d);
                      }

                      onResizeGL: {
                          GLCode.resizeGL(canvas3d);
                      }

                      MouseArea {
                          anchors.fill: parent
                          onMouseXChanged: {
                              // Do not rotate if we don't have previous value
                              if (previousY !== 0)
                                  canvas3d.yRot += mouseY - previousY
                              previousY = mouseY
                              // Limit the rotation to -90...90 degrees
                              if (canvas3d.yRot > 90)
                                  canvas3d.yRot = 90
                              if (canvas3d.yRot < -90)
                                  canvas3d.yRot = -90
                          }
                          onMouseYChanged: {
                              // Do not rotate if we don't have previous value
                              if (previousX !== 0)
                                  canvas3d.xRot += mouseX - previousX
                              previousX = mouseX
                              // Wrap the rotation around
                              if (canvas3d.xRot > 180)
                                  canvas3d.xRot -= 360
                              if (canvas3d.xRot < -180)
                                  canvas3d.xRot += 360
                          }
                          onReleased: {
                              // Reset previous mouse positions to avoid rotation jumping
                              previousX = 0
                              previousY = 0
                          }
                          onWheel: {
                              canvas3d.distance -= wheel.angleDelta.y / 1000.0
                              // Limit the distance to 0.5...10
                              if (canvas3d.distance < 0.5)
                                  canvas3d.distance = 0.5
                              if (canvas3d.distance > 10)
                                  canvas3d.distance = 10
                          }
                      }
                  }
              }
              RowLayout {
                  Layout.fillWidth: true
                  Button {
                      id: lightButton
                      Layout.fillWidth: true
                      text: "Animate Light"
                      checkable: true
                      onCheckedChanged: canvas3d.animatingLight = checked
                  }
                  Button {
                      id: cameraButton
                      Layout.fillWidth: true
                      text: "Animate Camera"
                      checkable: true
                      onCheckedChanged: canvas3d.animatingCamera = checked
                  }
                  Button {
                      id: drawButton
                      Layout.fillWidth: true
                      text: "Wireframe"
                      checkable: true
                      onCheckedChanged: canvas3d.drawWireframe = checked
                  }
                  Button {
                      Layout.fillWidth: true
                      text: "Reset"
                      onClicked: {
                          canvas3d.xRot = 0.0
                          canvas3d.yRot = 45.0
                          canvas3d.distance = 2.0
                          canvas3d.itemSize = 1.0
                          canvas3d.lightX = 0.0
                          canvas3d.lightY = 45.0
                          canvas3d.lightDistance = 2.0
                          lightButton.checked = false
                          cameraButton.checked = false
                          drawButton.checked = false
                      }
                  }
                  Button {
                      Layout.fillWidth: true
                      text: "Quit"
                      onClicked: Qt.quit()
                  }
              }
          }

          SequentialAnimation {
              loops: Animation.Infinite
              running: canvas3d.animatingLight
              NumberAnimation {
                  target: canvas3d
                  property: "lightX"
                  from: 0.0
                  to: 360.0
                  duration: 5000
              }
          }

          SequentialAnimation {
              loops: Animation.Infinite
              running: canvas3d.animatingLight
              NumberAnimation {
                  target: canvas3d
                  property: "lightY"
                  from: 0.0
                  to: 90.0
                  duration: 10000
              }
              NumberAnimation {
                  target: canvas3d
                  property: "lightY"
                  from: 90.0
                  to: 0.0
                  duration: 10000
              }
          }

          SequentialAnimation {
              loops: Animation.Infinite
              running: canvas3d.animatingLight
              NumberAnimation {
                  target: canvas3d
                  property: "lightDistance"
                  from: 10.0
                  to: 0.5
                  duration: 30000
              }
              NumberAnimation {
                  target: canvas3d
                  property: "lightDistance"
                  from: 0.5
                  to: 10.0
                  duration: 30000
              }
          }

          SequentialAnimation {
              loops: Animation.Infinite
              running: canvas3d.animatingCamera
              NumberAnimation {
                  target: canvas3d
                  property: "xRot"
                  from: -180.0
                  to: 180.0
                  duration: 5000
                  easing.type: Easing.InOutSine
              }
              NumberAnimation {
                  target: canvas3d
                  property: "xRot"
                  from: 180.0
                  to: -180.0
                  duration: 5000
                  easing.type: Easing.InOutSine
              }
          }

          SequentialAnimation {
              loops: Animation.Infinite
              running: canvas3d.animatingCamera
              NumberAnimation {
                  target: canvas3d
                  property: "yRot"
                  from: 0.0
                  to: 90.0
                  duration: 10000
                  easing.type: Easing.InOutSine
              }
              NumberAnimation {
                  target: canvas3d
                  property: "yRot"
                  from: 90.0
                  to: 0.0
                  duration: 10000
                  easing.type: Easing.InOutSine
              }
          }

          SequentialAnimation {
              loops: Animation.Infinite
              running: canvas3d.animatingCamera
              NumberAnimation {
                  target: canvas3d
                  property: "distance"
                  from: 10.0
                  to: 0.5
                  duration: 30000
                  easing.type: Easing.InOutSine
              }
              NumberAnimation {
                  target: canvas3d
                  property: "distance"
                  from: 0.5
                  to: 10.0
                  duration: 30000
                  easing.type: Easing.InOutSine
              }
          }
      }