QT 中Widgets-Scene3d例子学习

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#include <QApplication>
#include <QMainWindow>
#include <QQuickWidget>
#include <QMdiArea>
#include <QLCDNumber>
#include <QMenuBar>
#include "scenemodifier.h"
#include <Qt3DRender/qcamera.h>
#include <Qt3DCore/qentity.h>
#include <Qt3DRender/qcameralens.h>
#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);

QMainWindow mainWindow;

QMdiArea *centralWidget = new QMdiArea;
// 子窗口1
QLCDNumber *lcd = new QLCDNumber;
lcd->display();
lcd->setMinimumSize();
centralWidget->addSubWindow(lcd);
// 子窗口2
QQuickWidget *quickWidget = new QQuickWidget;
quickWidget->setMinimumSize();
quickWidget->setResizeMode(QQuickWidget::SizeRootObjectToView);
quickWidget->setSource(QUrl("qrc:/main.qml"));
centralWidget->addSubWindow(quickWidget);
// 子窗口3
Qt3DExtras::Qt3DWindow *view = new Qt3DExtras::Qt3DWindow();
view->defaultFrameGraph()->setClearColor(QColor(QRgb(0x4d4d4f)));
QWidget *container = QWidget::createWindowContainer(view);
container->setMinimumSize();
centralWidget->addSubWindow(container);

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(.0f);
cameraEntity->setPosition(QVector3D(.0f));
cameraEntity->setUpVector(QVector3D());
cameraEntity->setViewCenter(QVector3D());

Qt3DCore::QEntity *lightEntity = new Qt3DCore::QEntity(rootEntity);
Qt3DRender::QPointLight *light = new Qt3DRender::QPointLight(lightEntity);
light->setColor("white");
light->setIntensity();
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);

mainWindow.setCentralWidget(centralWidget);

QMenu *fileMenu = mainWindow.menuBar()->addMenu(QObject::tr("&File"));
fileMenu->addAction(QObject::tr("E&xit"), qApp, &QCoreApplication::quit);

mainWindow.resize();
mainWindow.show();

return app.exec();
}

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// 子窗口4-GraphicsView With OpenGL
QGLWidget *widget = new QGLWidget(QGLFormat(QGL::SampleBuffers));
widget->makeCurrent();
Scene scene(1024, 768, maxTextureSize);;
GraphicsView view;
view.setViewport(widget);
view.setViewportUpdateMode(QGraphicsView::FullViewportUpdate);
view.setScene(&scene);
//gview.show();
centralWidget->addSubWindow(&gview);