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#ifndef QDECLARATIVEATTENUATIONMODEL_P_H
#define QDECLARATIVEATTENUATIONMODEL_P_H

#include <QtQml/qqml.h>
#include <QtQml/qqmlcomponent.h>
#include <QVector3D>

QT_BEGIN_NAMESPACE

class QDeclarativeAttenuationModel : public QObject, public QQmlParserStatus
{
    Q_OBJECT
    Q_INTERFACES(QQmlParserStatus)
    Q_PROPERTY(QString name READ name WRITE setName)

public:
    QDeclarativeAttenuationModel(QObject *parent = 0);
    ~QDeclarativeAttenuationModel();

    void classBegin();
    void componentComplete();

    QString name() const;
    void setName(const QString& name);

    virtual qreal calculateGain(const QVector3D &listenerPosition, const QVector3D &sourcePosition) const = 0;

protected:
    bool m_complete;
    QString m_name;

private:
    Q_DISABLE_COPY(QDeclarativeAttenuationModel);
};

class QDeclarativeAttenuationModelLinear : public QDeclarativeAttenuationModel
{
    Q_OBJECT
    Q_PROPERTY(qreal start READ startDistance WRITE setStartDistance CONSTANT)
    Q_PROPERTY(qreal end READ endDistance WRITE setEndDistance CONSTANT)

public:
    QDeclarativeAttenuationModelLinear(QObject *parent = 0);

    void componentComplete();

    qreal startDistance() const;
    void setStartDistance(qreal startDist);

    qreal endDistance() const;
    void setEndDistance(qreal endDist);

    qreal calculateGain(const QVector3D &listenerPosition, const QVector3D &sourcePosition) const;

private:
    Q_DISABLE_COPY(QDeclarativeAttenuationModelLinear);
    qreal m_start;
    qreal m_end;
};

class QDeclarativeAttenuationModelInverse : public QDeclarativeAttenuationModel
{
    Q_OBJECT
    Q_PROPERTY(qreal start READ referenceDistance WRITE setReferenceDistance CONSTANT)
    Q_PROPERTY(qreal end READ maxDistance WRITE setMaxDistance CONSTANT)
    Q_PROPERTY(qreal rolloff READ rolloffFactor WRITE setRolloffFactor CONSTANT)

public:
    QDeclarativeAttenuationModelInverse(QObject *parent = 0);

    void componentComplete();

    qreal referenceDistance() const;
    void setReferenceDistance(qreal referenceDistance);

    qreal maxDistance() const;
    void setMaxDistance(qreal maxDistance);

    qreal rolloffFactor() const;
    void setRolloffFactor(qreal rolloffFactor);

    qreal calculateGain(const QVector3D &listenerPosition, const QVector3D &sourcePosition) const;

private:
    Q_DISABLE_COPY(QDeclarativeAttenuationModelInverse);
    qreal m_ref;
    qreal m_max;
    qreal m_rolloff;
};

QT_END_NAMESPACE

#endif
