qt3d/examples/bigmodel-qml/main.cpp

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#include <Qt3DCore/window.h>
#include <Qt3DRenderer/qrenderaspect.h>
#include <Qt3DInput/QInputAspect>
#include <Qt3DQuick/QQmlAspectEngine>

#include <QGuiApplication>
#include <QtQml>

#include <iostream>

int main(int argc, char* argv[])
{
    QGuiApplication app(argc, argv);

    QCommandLineParser parser;
    parser.addPositionalArgument(QStringLiteral("meshfile"), QStringLiteral("The mesh file to load"));
    parser.process(app);

    const QStringList meshFileNames = parser.positionalArguments();
    if (meshFileNames.length() == 0) {
        std::cerr << "Please specify mesh files to load" << std::endl;
        return 1;
    }

    Qt3D::Window view;
    Qt3D::Quick::QQmlAspectEngine engine;

    engine.aspectEngine()->registerAspect(new Qt3D::QRenderAspect());
    engine.aspectEngine()->registerAspect(new Qt3D::QInputAspect());
    engine.qmlEngine()->rootContext()->setContextProperty("_meshFileNames", meshFileNames);
    QVariantMap data;
    data.insert(QStringLiteral("surface"), QVariant::fromValue(static_cast<QSurface *>(&view)));
    data.insert(QStringLiteral("eventSource"), QVariant::fromValue(&view));
    engine.aspectEngine()->setData(data);
    engine.aspectEngine()->initialize();
    engine.setSource(QUrl("qrc:/main.qml"));
    view.show();

    return app.exec();
}