qt3d/examples/qt3d/assimp-cpp/main.cpp

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** Copyright (C) 2015 Klaralvdalens Datakonsult AB (KDAB).
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#include <QFileDialog>
#include <QApplication>

#include <window.h>
#include <Qt3DCore/QCamera>
#include <Qt3DCore/QEntity>
#include <Qt3DCore/QAspectEngine>
#include <Qt3DInput/QInputAspect>
#include <Qt3DRenderer/QFrameGraph>
#include <Qt3DRenderer/QSceneLoader>
#include <Qt3DRenderer/QRenderAspect>
#include <Qt3DRenderer/QForwardRenderer>


int main(int ac, char **av)
{
    QApplication app(ac, av);

    Window view;

    Qt3D::QAspectEngine engine;
    Qt3D::QInputAspect *inputAspect = new Qt3D::QInputAspect();
    engine.registerAspect(new Qt3D::QRenderAspect());
    engine.registerAspect(inputAspect);
    engine.initialize();
    QVariantMap data;
    data.insert(QStringLiteral("surface"), QVariant::fromValue(static_cast<QSurface *>(&view)));
    data.insert(QStringLiteral("eventSource"), QVariant::fromValue(&view));
    engine.setData(data);

    // Root entity
    Qt3D::QEntity *sceneRoot = new Qt3D::QEntity();

    // Scene Camera
    Qt3D::QCamera *basicCamera = new Qt3D::QCamera(sceneRoot);
    basicCamera->setProjectionType(Qt3D::QCameraLens::PerspectiveProjection);
    basicCamera->setAspectRatio(view.width() / view.height());
    basicCamera->setUpVector(QVector3D(0.0f, 1.0f, 0.0f));
    basicCamera->setViewCenter(QVector3D(0.0f, 3.5f, 0.0f));
    basicCamera->setPosition(QVector3D(0.0f, 3.5f, 25.0f));
    basicCamera->setNearPlane(0.001f);
    basicCamera->setFarPlane(10000.0f);
    // For camera controls
    inputAspect->setCamera(basicCamera);

    // Forward Renderer FrameGraph
    Qt3D::QFrameGraph *frameGraphComponent = new Qt3D::QFrameGraph(sceneRoot);
    Qt3D::QForwardRenderer *forwardRenderer = new Qt3D::QForwardRenderer();
    forwardRenderer->setCamera(basicCamera);
    forwardRenderer->setClearColor(Qt::black);
    frameGraphComponent->setActiveFrameGraph(forwardRenderer);
    sceneRoot->addComponent(frameGraphComponent);

    // Scene loader
    Qt3D::QEntity *sceneLoaderEntity = new Qt3D::QEntity(sceneRoot);
    Qt3D::QSceneLoader *sceneLoader = new Qt3D::QSceneLoader(sceneLoaderEntity);
    sceneLoaderEntity->addComponent(sceneLoader);

    QWidget *container = new QWidget();
    QFileDialog dialog;
    dialog.setFileMode(QFileDialog::AnyFile);
    sceneLoader->setSource(dialog.getOpenFileUrl(container, QStringLiteral("Open a scene file")));

    engine.setRootEntity(sceneRoot);
    view.show();

    return app.exec();
}