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#ifndef QVECTOR2D_H

#define QVECTOR2D_H

#include <QtCore/qpoint.h>

#include <QtCore/qmetatype.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Gui)

class QVector3D;

class QVector4D;

class QVariant;

#ifndef QT_NO_VECTOR2D

class Q_GUI_EXPORT QVector2D

{

public:

    QVector2D();

    QVector2D(qreal xpos, qreal ypos);

    explicit QVector2D(const QPoint& point);

    explicit QVector2D(const QPointF& point);

#ifndef QT_NO_VECTOR3D

    explicit QVector2D(const QVector3D& vector);

#endif

#ifndef QT_NO_VECTOR4D

    explicit QVector2D(const QVector4D& vector);

#endif

    bool isNull() const;

    qreal x() const;

    qreal y() const;

    void setX(qreal x);

    void setY(qreal y);

    qreal length() const;

    qreal lengthSquared() const;

    QVector2D normalized() const;

    void normalize();

    QVector2D &operator+=(const QVector2D &vector);

    QVector2D &operator-=(const QVector2D &vector);

    QVector2D &operator*=(qreal factor);

    QVector2D &operator*=(const QVector2D &vector);

    QVector2D &operator/=(qreal divisor);

    static qreal dotProduct(const QVector2D& v1, const QVector2D& v2);

    friend inline bool operator==(const QVector2D &v1, const QVector2D &v2);

    friend inline bool operator!=(const QVector2D &v1, const QVector2D &v2);

    friend inline const QVector2D operator+(const QVector2D &v1, const QVector2D &v2);

    friend inline const QVector2D operator-(const QVector2D &v1, const QVector2D &v2);

    friend inline const QVector2D operator*(qreal factor, const QVector2D &vector);

    friend inline const QVector2D operator*(const QVector2D &vector, qreal factor);

    friend inline const QVector2D operator*(const QVector2D &v1, const QVector2D &v2);

    friend inline const QVector2D operator-(const QVector2D &vector);

    friend inline const QVector2D operator/(const QVector2D &vector, qreal divisor);

    friend inline bool qFuzzyCompare(const QVector2D& v1, const QVector2D& v2);

#ifndef QT_NO_VECTOR3D

    QVector3D toVector3D() const;

#endif

#ifndef QT_NO_VECTOR4D

    QVector4D toVector4D() const;

#endif

    QPoint toPoint() const;

    QPointF toPointF() const;

    operator QVariant() const;

private:

    float xp, yp;

    QVector2D(float xpos, float ypos, int dummy);

    friend class QVector3D;

    friend class QVector4D;

};

inline QVector2D::QVector2D() : xp(0.0f), yp(0.0f) {}

inline QVector2D::QVector2D(float xpos, float ypos, int) : xp(xpos), yp(ypos) {}

inline QVector2D::QVector2D(qreal xpos, qreal ypos) : xp(xpos), yp(ypos) {}

inline QVector2D::QVector2D(const QPoint& point) : xp(point.x()), yp(point.y()) {}

inline QVector2D::QVector2D(const QPointF& point) : xp(point.x()), yp(point.y()) {}

inline bool QVector2D::isNull() const

{

    return qIsNull(xp) && qIsNull(yp);

}

inline qreal QVector2D::x() const { return qreal(xp); }

inline qreal QVector2D::y() const { return qreal(yp); }

inline void QVector2D::setX(qreal aX) { xp = aX; }

inline void QVector2D::setY(qreal aY) { yp = aY; }

inline QVector2D &QVector2D::operator+=(const QVector2D &vector)

{

    xp += vector.xp;

    yp += vector.yp;

    return *this;

}

inline QVector2D &QVector2D::operator-=(const QVector2D &vector)

{

    xp -= vector.xp;

    yp -= vector.yp;

    return *this;

}

inline QVector2D &QVector2D::operator*=(qreal factor)

{

    xp *= factor;

    yp *= factor;

    return *this;

}

inline QVector2D &QVector2D::operator*=(const QVector2D &vector)

{

    xp *= vector.xp;

    yp *= vector.yp;

    return *this;

}

inline QVector2D &QVector2D::operator/=(qreal divisor)

{

    xp /= divisor;

    yp /= divisor;

    return *this;

}

inline bool operator==(const QVector2D &v1, const QVector2D &v2)

{

    return v1.xp == v2.xp && v1.yp == v2.yp;

}

inline bool operator!=(const QVector2D &v1, const QVector2D &v2)

{

    return v1.xp != v2.xp || v1.yp != v2.yp;

}

inline const QVector2D operator+(const QVector2D &v1, const QVector2D &v2)

{

    return QVector2D(v1.xp + v2.xp, v1.yp + v2.yp, 1);

}

inline const QVector2D operator-(const QVector2D &v1, const QVector2D &v2)

{

    return QVector2D(v1.xp - v2.xp, v1.yp - v2.yp, 1);

}

inline const QVector2D operator*(qreal factor, const QVector2D &vector)

{

    return QVector2D(vector.xp * factor, vector.yp * factor, 1);

}

inline const QVector2D operator*(const QVector2D &vector, qreal factor)

{

    return QVector2D(vector.xp * factor, vector.yp * factor, 1);

}

inline const QVector2D operator*(const QVector2D &v1, const QVector2D &v2)

{

    return QVector2D(v1.xp * v2.xp, v1.yp * v2.yp, 1);

}

inline const QVector2D operator-(const QVector2D &vector)

{

    return QVector2D(-vector.xp, -vector.yp, 1);

}

inline const QVector2D operator/(const QVector2D &vector, qreal divisor)

{

    return QVector2D(vector.xp / divisor, vector.yp / divisor, 1);

}

inline bool qFuzzyCompare(const QVector2D& v1, const QVector2D& v2)

{

    return qFuzzyCompare(v1.xp, v2.xp) && qFuzzyCompare(v1.yp, v2.yp);

}

inline QPoint QVector2D::toPoint() const

{

    return QPoint(qRound(xp), qRound(yp));

}

inline QPointF QVector2D::toPointF() const

{

    return QPointF(qreal(xp), qreal(yp));

}

#ifndef QT_NO_DEBUG_STREAM

Q_GUI_EXPORT QDebug operator<<(QDebug dbg, const QVector2D &vector);

#endif

#ifndef QT_NO_DATASTREAM

Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QVector2D &);

Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QVector2D &);

#endif

#endif

QT_END_NAMESPACE

QT_END_HEADER

#endif