Qt 5.6 | Qt 3D | Qt 3D: Big Model QML Example | main.qml Example File

Qt 5.6.3 Reference Documentation

# main.qml Example File

bigmodel-qml/main.qml

      /****************************************************************************
      **
      ** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
      ** Contact: http://www.qt-project.org/legal
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      ** This file is part of the Qt3D module of the Qt Toolkit.
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      ** $QT_BEGIN_LICENSE:LGPL3$
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      ** Alternatively, this file may be used under the terms of the GNU
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      import Qt3D.Core 2.0
      import Qt3D.Render 2.0
      import QtQuick 2.2 as QQ2

      Entity {
          id: sceneRoot

          Configuration { controlledCamera: mainCamera }

          components: [
              FrameGraph { activeFrameGraph: ForwardRenderer { camera: mainCamera } }
          ]

          Camera {
              id: mainCamera
              projectionType: CameraLens.PerspectiveProjection
              fieldOfView: 22.5
              aspectRatio: 16 / 9
              nearPlane:   0.01
              farPlane:    1000.0
              position:   Qt.vector3d( 0.0, 25.0, 40.0 )
              viewCenter: Qt.vector3d( 0.0, 0.0, 0.0 )
              upVector:   Qt.vector3d( 0.0, 1.0, 0.0 )
          }

          QQ2.ListModel {
              id: entityModel
              QQ2.ListElement { emptyRole: 0 }
          }

          NodeInstantiator {
              id: collection
              property int _count: 0
              property real spacing: 5
              property int cols: 8
              property int _rows: count / cols

              model: entityModel
              delegate: MyEntity {
                  id: myEntity
                  property real _lightness: 0.2 + 0.7 / collection._rows * Math.floor(index / collection.cols)
                  property real _hue: (index % collection.cols) / collection.cols
                  position: Qt.vector3d(collection.spacing * (index % collection.cols - 0.5 * (collection.cols - 1)),
                                        0.0,
                                        collection.spacing * (Math.floor(index / collection.cols) - 0.5 * collection._rows));
                  diffuse: Qt.hsla( _hue, 0.5, _lightness, 1.0 )
              }
          }

          QQ2.Timer {
              interval: 1000
              repeat: true
              running: true
              onTriggered: {
                  entityModel.append({});
              }
          }
      }