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#ifndef SCENEMODIFIER_H
#define SCENEMODIFIER_H

#include <QtCore/QObject>

#include <Qt3DCore/QEntity>
#include <Qt3DCore/QTransform>
#include <Qt3DRender/QCamera>
#include <Qt3DRender/QObjectPicker>

#include <Qt3DExtras/QCuboidMesh>
#include <Qt3DExtras/QPhongMaterial>
#include <QMatrix4x4>

class SceneModifier : public QObject
{
    Q_OBJECT

public:
    explicit SceneModifier(Qt3DCore::QEntity *rootEntity);
    ~SceneModifier();
    void SetCamera(Qt3DRender::QCamera* pCamera);

public slots:
    void viewMatrixChanged();
    void MakeAllPickers();
    void MakeAllTriangles();
    void reset_button_clicked();
    void enableSelection(bool Enable);

signals:
    void TriangleSelected(QString);

private slots:
    void On_PickerEntered(QString Text);
	void On_PickerEntered(QString Text, Qt3DRender::QObjectPicker* Picker);
    void On_PickerExited();
	void On_PickerExited(QString Text, Qt3DRender::QObjectPicker* Picker);
	void On_PickerMoved();
	void On_PickerPressed(Qt3DRender::QPickEvent *ev);
	void On_PickerReleased(Qt3DRender::QPickEvent *ev);
	void On_PickerClicked(Qt3DRender::QPickEvent *ev);
    Qt3DCore::QEntity* MakeTrianglesEntity(const QVector3D& Point0_3D, const QVector3D& Point1_3D, const QVector3D& Point2_3D);
    Qt3DRender::QObjectPicker* MakePicker();
    Qt3DRender::QGeometryRenderer* PrepareTriangleMesh(Qt3DCore::QEntity* pParentEntity, const QVector3D& Point0, const QVector3D& Point1, const QVector3D& Point2) const;


private:
    Qt3DCore::QEntity *m_rootEntity;
    Qt3DCore::QEntity *m_textEntity;
    Qt3DCore::QTransform *m_textTransform;
    Qt3DRender::QCamera* m_Camera;
    QVector<Qt3DRender::QObjectPicker*> m_Pickers;
    QVector<Qt3DCore::QEntity *> m_pTriangleEntities;
};

#endif // SCENEMODIFIER_H