main.cpp Example File

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 #include "scenemodifier.h"

 #include <QGuiApplication>

 #include <Qt3DRender/qcamera.h>
 #include <Qt3DCore/qentity.h>
 #include <Qt3DRender/qcameralens.h>

 #include <QtWidgets/QApplication>
 #include <QtWidgets/QWidget>
 #include <QtWidgets/QHBoxLayout>
 #include <QtWidgets/QCheckBox>
 #include <QtWidgets/QCommandLinkButton>
 #include <QtGui/QScreen>

 #include <Qt3DInput/QInputAspect>

 #include <Qt3DExtras/qtorusmesh.h>
 #include <Qt3DRender/qmesh.h>
 #include <Qt3DRender/qtechnique.h>
 #include <Qt3DRender/qmaterial.h>
 #include <Qt3DRender/qeffect.h>
 #include <Qt3DRender/qtexture.h>
 #include <Qt3DRender/qrenderpass.h>
 #include <Qt3DRender/qsceneloader.h>
 #include <Qt3DRender/qpointlight.h>

 #include <Qt3DCore/qtransform.h>
 #include <Qt3DCore/qaspectengine.h>

 #include <Qt3DRender/qrenderaspect.h>
 #include <Qt3DExtras/qforwardrenderer.h>

 #include <Qt3DExtras/qt3dwindow.h>
 #include <Qt3DExtras/qfirstpersoncameracontroller.h>

 int main(int argc, char **argv)
 {
     QApplication app(argc, argv);
     Qt3DExtras::Qt3DWindow *view = new Qt3DExtras::Qt3DWindow();
     view->defaultFrameGraph()->setClearColor(QColor(QRgb(0x4d4d4f)));
     QWidget *container = QWidget::createWindowContainer(view);
     QSize screenSize = view->screen()->size();
     container->setMinimumSize(QSize(200, 100));
     container->setMaximumSize(screenSize);

     QWidget *widget = new QWidget;
     QHBoxLayout *hLayout = new QHBoxLayout(widget);
     QVBoxLayout *vLayout = new QVBoxLayout();
     vLayout->setAlignment(Qt::AlignTop);
     hLayout->addWidget(container, 1);
     hLayout->addLayout(vLayout);

     widget->setWindowTitle(QStringLiteral("Basic shapes"));

     Qt3DInput::QInputAspect *input = new Qt3DInput::QInputAspect;
     view->registerAspect(input);

     // Root entity
     Qt3DCore::QEntity *rootEntity = new Qt3DCore::QEntity();

     // Camera
     Qt3DRender::QCamera *cameraEntity = view->camera();

     cameraEntity->lens()->setPerspectiveProjection(45.0f, 16.0f/9.0f, 0.1f, 1000.0f);
     cameraEntity->setPosition(QVector3D(0, 0, 20.0f));
     cameraEntity->setUpVector(QVector3D(0, 1, 0));
     cameraEntity->setViewCenter(QVector3D(0, 0, 0));

     Qt3DCore::QEntity *lightEntity = new Qt3DCore::QEntity(rootEntity);
     Qt3DRender::QPointLight *light = new Qt3DRender::QPointLight(lightEntity);
     light->setColor("white");
     light->setIntensity(1);
     lightEntity->addComponent(light);
     Qt3DCore::QTransform *lightTransform = new Qt3DCore::QTransform(lightEntity);
     lightTransform->setTranslation(cameraEntity->position());
     lightEntity->addComponent(lightTransform);

     // For camera controls
     Qt3DExtras::QFirstPersonCameraController *camController = new Qt3DExtras::QFirstPersonCameraController(rootEntity);
     camController->setCamera(cameraEntity);

     // Scenemodifier
     SceneModifier *modifier = new SceneModifier(rootEntity);

     // Set root object of the scene
     view->setRootEntity(rootEntity);

     // Create control widgets
     QCommandLinkButton *info = new QCommandLinkButton();
     info->setText(QStringLiteral("Qt3D ready-made meshes"));
     info->setDescription(QString::fromLatin1("Qt3D provides several ready-made meshes, like torus, cylinder, cone, "
                                              "cube, plane and sphere."));
     info->setIconSize(QSize(0,0));

     QCheckBox *torusCB = new QCheckBox(widget);
     torusCB->setChecked(true);
     torusCB->setText(QStringLiteral("Torus"));

     QCheckBox *coneCB = new QCheckBox(widget);
     coneCB->setChecked(true);
     coneCB->setText(QStringLiteral("Cone"));

     QCheckBox *cylinderCB = new QCheckBox(widget);
     cylinderCB->setChecked(true);
     cylinderCB->setText(QStringLiteral("Cylinder"));

     QCheckBox *cuboidCB = new QCheckBox(widget);
     cuboidCB->setChecked(true);
     cuboidCB->setText(QStringLiteral("Cuboid"));

     QCheckBox *planeCB = new QCheckBox(widget);
     planeCB->setChecked(true);
     planeCB->setText(QStringLiteral("Plane"));

     QCheckBox *sphereCB = new QCheckBox(widget);
     sphereCB->setChecked(true);
     sphereCB->setText(QStringLiteral("Sphere"));

     vLayout->addWidget(info);
     vLayout->addWidget(torusCB);
     vLayout->addWidget(coneCB);
     vLayout->addWidget(cylinderCB);
     vLayout->addWidget(cuboidCB);
     vLayout->addWidget(planeCB);
     vLayout->addWidget(sphereCB);

     QObject::connect(torusCB, &QCheckBox::stateChanged,
                      modifier, &SceneModifier::enableTorus);
     QObject::connect(coneCB, &QCheckBox::stateChanged,
                      modifier, &SceneModifier::enableCone);
     QObject::connect(cylinderCB, &QCheckBox::stateChanged,
                      modifier, &SceneModifier::enableCylinder);
     QObject::connect(cuboidCB, &QCheckBox::stateChanged,
                      modifier, &SceneModifier::enableCuboid);
     QObject::connect(planeCB, &QCheckBox::stateChanged,
                      modifier, &SceneModifier::enablePlane);
     QObject::connect(sphereCB, &QCheckBox::stateChanged,
                      modifier, &SceneModifier::enableSphere);

     torusCB->setChecked(true);
     coneCB->setChecked(true);
     cylinderCB->setChecked(true);
     cuboidCB->setChecked(true);
     planeCB->setChecked(true);
     sphereCB->setChecked(true);

     // Show window
     widget->show();
     widget->resize(1200, 800);

     return app.exec();
 }