abstractscene.h

Go to the documentation of this file.

#ifndef ABSTRACTSCENE_H
#define ABSTRACTSCENE_H

#include <memory>

#include <QObject>
#include <QWeakPointer>

#include "abstractrenderer.h"
#include "objtools.h"

class AbstractScene : public QObject
{
    Q_OBJECT

public:


    virtual ~AbstractScene() {}

    QSharedPointer<AbstractRenderer> getRenderer()
    {
        QSharedPointer<AbstractRenderer> strongRef;

        if (mRenderer.isNull()) {
            strongRef = makeRenderer();


            // The scene should not own its renderer.
            mRenderer = strongRef.toWeakRef();
        } else
            // The returned value should be a strong reference, so that the caller
            // may take ownership of the returned object.
            strongRef = mRenderer.toStrongRef();

        return strongRef;
    }

    virtual SharedOBJModel exportOBJ()=0;


protected:

    virtual QSharedPointer<AbstractRenderer> makeRenderer() = 0;

signals:

    void sceneUpdated();


private:


    QWeakPointer<AbstractRenderer> mRenderer;

};

typedef std::shared_ptr<AbstractScene> SharedAbstractScene;


#endif // ABSTRACTSCENE_H