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#ifndef QVECTOR4D_H

#define QVECTOR4D_H

#include <QtCore/qpoint.h>

#include <QtCore/qmetatype.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Gui)

class QMatrix4x4;

class QVector2D;

class QVector3D;

#ifndef QT_NO_VECTOR4D

class Q_GUI_EXPORT QVector4D

{

public:

    QVector4D();

    QVector4D(qreal xpos, qreal ypos, qreal zpos, qreal wpos);

    explicit QVector4D(const QPoint& point);

    explicit QVector4D(const QPointF& point);

#ifndef QT_NO_VECTOR2D

    QVector4D(const QVector2D& vector);

    QVector4D(const QVector2D& vector, qreal zpos, qreal wpos);

#endif

#ifndef QT_NO_VECTOR3D

    QVector4D(const QVector3D& vector);

    QVector4D(const QVector3D& vector, qreal wpos);

#endif

    bool isNull() const;

    qreal x() const;

    qreal y() const;

    qreal z() const;

    qreal w() const;

    void setX(qreal x);

    void setY(qreal y);

    void setZ(qreal z);

    void setW(qreal w);

    qreal length() const;

    qreal lengthSquared() const;

    QVector4D normalized() const;

    void normalize();

    QVector4D &operator+=(const QVector4D &vector);

    QVector4D &operator-=(const QVector4D &vector);

    QVector4D &operator*=(qreal factor);

    QVector4D &operator*=(const QVector4D &vector);

    QVector4D &operator/=(qreal divisor);

    static qreal dotProduct(const QVector4D& v1, const QVector4D& v2);

    friend inline bool operator==(const QVector4D &v1, const QVector4D &v2);

    friend inline bool operator!=(const QVector4D &v1, const QVector4D &v2);

    friend inline const QVector4D operator+(const QVector4D &v1, const QVector4D &v2);

    friend inline const QVector4D operator-(const QVector4D &v1, const QVector4D &v2);

    friend inline const QVector4D operator*(qreal factor, const QVector4D &vector);

    friend inline const QVector4D operator*(const QVector4D &vector, qreal factor);

    friend inline const QVector4D operator*(const QVector4D &v1, const QVector4D& v2);

    friend inline const QVector4D operator-(const QVector4D &vector);

    friend inline const QVector4D operator/(const QVector4D &vector, qreal divisor);

    friend inline bool qFuzzyCompare(const QVector4D& v1, const QVector4D& v2);

#ifndef QT_NO_VECTOR2D

    QVector2D toVector2D() const;

    QVector2D toVector2DAffine() const;

#endif

#ifndef QT_NO_VECTOR3D

    QVector3D toVector3D() const;

    QVector3D toVector3DAffine() const;

#endif

    QPoint toPoint() const;

    QPointF toPointF() const;

    operator QVariant() const;

private:

    float xp, yp, zp, wp;

    QVector4D(float xpos, float ypos, float zpos, float wpos, int dummy);

    friend class QVector2D;

    friend class QVector3D;

#ifndef QT_NO_MATRIX4X4

    friend QVector4D operator*(const QVector4D& vector, const QMatrix4x4& matrix);

    friend QVector4D operator*(const QMatrix4x4& matrix, const QVector4D& vector);

#endif

};

inline QVector4D::QVector4D() : xp(0.0f), yp(0.0f), zp(0.0f), wp(0.0f) {}

inline QVector4D::QVector4D(qreal xpos, qreal ypos, qreal zpos, qreal wpos) : xp(xpos), yp(ypos), zp(zpos), wp(wpos) {}

inline QVector4D::QVector4D(float xpos, float ypos, float zpos, float wpos, int) : xp(xpos), yp(ypos), zp(zpos), wp(wpos) {}

inline QVector4D::QVector4D(const QPoint& point) : xp(point.x()), yp(point.y()), zp(0.0f), wp(0.0f) {}

inline QVector4D::QVector4D(const QPointF& point) : xp(point.x()), yp(point.y()), zp(0.0f), wp(0.0f) {}

inline bool QVector4D::isNull() const

{

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

}

inline qreal QVector4D::x() const { return qreal(xp); }

inline qreal QVector4D::y() const { return qreal(yp); }

inline qreal QVector4D::z() const { return qreal(zp); }

inline qreal QVector4D::w() const { return qreal(wp); }

inline void QVector4D::setX(qreal aX) { xp = aX; }

inline void QVector4D::setY(qreal aY) { yp = aY; }

inline void QVector4D::setZ(qreal aZ) { zp = aZ; }

inline void QVector4D::setW(qreal aW) { wp = aW; }

inline QVector4D &QVector4D::operator+=(const QVector4D &vector)

{

    xp += vector.xp;

    yp += vector.yp;

    zp += vector.zp;

    wp += vector.wp;

    return *this;

}

inline QVector4D &QVector4D::operator-=(const QVector4D &vector)

{

    xp -= vector.xp;

    yp -= vector.yp;

    zp -= vector.zp;

    wp -= vector.wp;

    return *this;

}

inline QVector4D &QVector4D::operator*=(qreal factor)

{

    xp *= factor;

    yp *= factor;

    zp *= factor;

    wp *= factor;

    return *this;

}

inline QVector4D &QVector4D::operator*=(const QVector4D &vector)

{

    xp *= vector.xp;

    yp *= vector.yp;

    zp *= vector.zp;

    wp *= vector.wp;

    return *this;

}

inline QVector4D &QVector4D::operator/=(qreal divisor)

{

    xp /= divisor;

    yp /= divisor;

    zp /= divisor;

    wp /= divisor;

    return *this;

}

inline bool operator==(const QVector4D &v1, const QVector4D &v2)

{

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

}

inline bool operator!=(const QVector4D &v1, const QVector4D &v2)

{

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

}

inline const QVector4D operator+(const QVector4D &v1, const QVector4D &v2)

{

    return QVector4D(v1.xp + v2.xp, v1.yp + v2.yp, v1.zp + v2.zp, v1.wp + v2.wp, 1);

}

inline const QVector4D operator-(const QVector4D &v1, const QVector4D &v2)

{

    return QVector4D(v1.xp - v2.xp, v1.yp - v2.yp, v1.zp - v2.zp, v1.wp - v2.wp, 1);

}

inline const QVector4D operator*(qreal factor, const QVector4D &vector)

{

    return QVector4D(vector.xp * factor, vector.yp * factor, vector.zp * factor, vector.wp * factor, 1);

}

inline const QVector4D operator*(const QVector4D &vector, qreal factor)

{

    return QVector4D(vector.xp * factor, vector.yp * factor, vector.zp * factor, vector.wp * factor, 1);

}

inline const QVector4D operator*(const QVector4D &v1, const QVector4D& v2)

{

    return QVector4D(v1.xp * v2.xp, v1.yp * v2.yp, v1.zp * v2.zp, v1.wp * v2.wp, 1);

}

inline const QVector4D operator-(const QVector4D &vector)

{

    return QVector4D(-vector.xp, -vector.yp, -vector.zp, -vector.wp, 1);

}

inline const QVector4D operator/(const QVector4D &vector, qreal divisor)

{

    return QVector4D(vector.xp / divisor, vector.yp / divisor, vector.zp / divisor, vector.wp / divisor, 1);

}

inline bool qFuzzyCompare(const QVector4D& v1, const QVector4D& v2)

{

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

           qFuzzyCompare(v1.yp, v2.yp) &&

           qFuzzyCompare(v1.zp, v2.zp) &&

           qFuzzyCompare(v1.wp, v2.wp);

}

inline QPoint QVector4D::toPoint() const

{

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

}

inline QPointF QVector4D::toPointF() const

{

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

}

#ifndef QT_NO_DEBUG_STREAM

Q_GUI_EXPORT QDebug operator<<(QDebug dbg, const QVector4D &vector);

#endif

#ifndef QT_NO_DATASTREAM

Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QVector4D &);

Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QVector4D &);

#endif

#endif

QT_END_NAMESPACE

QT_END_HEADER

#endif