Qt 5.6 | Qt 3D | Qt 3D: Multi Viewport QML Example | main.qml Example File

Qt 5.6.3 Reference Documentation

# main.qml Example File

multiviewport/main.qml

      /****************************************************************************
      **
      ** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
      ** Contact: http://www.qt-project.org/legal
      **
      ** This file is part of the Qt3D module of the Qt Toolkit.
      **
      ** $QT_BEGIN_LICENSE:LGPL3$
      ** Commercial License Usage
      ** Licensees holding valid commercial Qt licenses may use this file in
      ** accordance with the commercial license agreement provided with the
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      ** and conditions see http://www.qt.io/terms-conditions. For further
      ** information use the contact form at http://www.qt.io/contact-us.
      **
      ** GNU Lesser General Public License Usage
      ** Alternatively, this file may be used under the terms of the GNU Lesser
      ** General Public License version 3 as published by the Free Software
      ** Foundation and appearing in the file LICENSE.LGPLv3 included in the
      ** packaging of this file. Please review the following information to
      ** ensure the GNU Lesser General Public License version 3 requirements
      ** will be met: https://www.gnu.org/licenses/lgpl.html.
      **
      ** GNU General Public License Usage
      ** Alternatively, this file may be used under the terms of the GNU
      ** General Public License version 2.0 or later as published by the Free
      ** Software Foundation and appearing in the file LICENSE.GPL included in
      ** the packaging of this file. Please review the following information to
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      import QtQuick 2.0
      import Qt3D.Core 2.0
      import Qt3D.Render 2.0

      Entity {
          id: rootNode
          components: [quadViewportFrameGraph]

          QuadViewportFrameGraph {
              id: quadViewportFrameGraph
              topLeftCamera: cameraSet.cameras[0]
              topRightCamera: cameraSet.cameras[1]
              bottomLeftCamera: cameraSet.cameras[2]
              bottomRightCamera: cameraSet.cameras[3]
          }

          Entity {
              id: cameraSet
              property var cameras: [camera1, camera2, camera3, camera4]

              Timer {
                  running: true
                  interval: 10000
                  repeat: true
                  property int count: 0
                  onTriggered: {
                      quadViewportFrameGraph.topLeftCamera = cameraSet.cameras[count++ % 4];
                      quadViewportFrameGraph.topRightCamera = cameraSet.cameras[count % 4];
                      quadViewportFrameGraph.bottomLeftCamera = cameraSet.cameras[(count + 1) % 4];
                      quadViewportFrameGraph.bottomRightCamera = cameraSet.cameras[(count + 2) % 4];
                  }
              }

              CameraLens {
                  id : cameraLens
                  projectionType: CameraLens.PerspectiveProjection
                  fieldOfView: 45
                  aspectRatio: 16/9
                  nearPlane : 0.01
                  farPlane : 1000.0
              }

              SimpleCamera {
                  id: camera1
                  lens: cameraLens
                  position: Qt.vector3d( 0.0, 0.0, -20.0 )
              }

              SimpleCamera {
                  id: camera2
                  lens: cameraLens
                  position: Qt.vector3d( 0.0, 0.0, 20.0 )
                  viewCenter: Qt.vector3d( -3.0, 0.0, 10.0 )
              }

              SimpleCamera {
                  id: camera3
                  lens: cameraLens
                  position: Qt.vector3d( 0.0, 30.0, 30.0 )
                  viewCenter: Qt.vector3d( -5.0, -20.0, -10.0 )
              }

              SimpleCamera {
                  id: camera4
                  lens: cameraLens
                  position: Qt.vector3d( 0.0, 15.0, 20.0 )
                  viewCenter: Qt.vector3d( 0.0, -15.0, -20.0 )
              }
          }

          Entity {
              id: sceneRoot
              property real rotationAngle: 0

              SequentialAnimation {
                  running: true
                  loops: Animation.Infinite
                  NumberAnimation { target: sceneRoot; property: "rotationAngle"; to: 360; duration: 2000; }
              }

              Entity {
                  components: [
                      Transform {
                          rotation: fromAxisAndAngle(Qt.vector3d(0, 0, 1), -sceneRoot.rotationAngle)
                      },
                      SceneLoader {
                          source: "qrc:/assets/test_scene.dae"
                      }
                  ]
              }
          } // sceneRoot
      } // rootNode