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+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial Usage
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QVECTOR3D_H
+#define QVECTOR3D_H
+
+#include <QtCore/qpoint.h>
+#include <QtCore/qmetatype.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Gui)
+
+class QMatrix4x4;
+class QVector2D;
+class QVector4D;
+
+#ifndef QT_NO_VECTOR3D
+
+class Q_GUI_EXPORT QVector3D
+{
+public:
+    QVector3D();
+    QVector3D(qreal xpos, qreal ypos, qreal zpos);
+    explicit QVector3D(const QPoint& point);
+    explicit QVector3D(const QPointF& point);
+#ifndef QT_NO_VECTOR2D
+    QVector3D(const QVector2D& vector);
+    QVector3D(const QVector2D& vector, qreal zpos);
+#endif
+#ifndef QT_NO_VECTOR4D
+    explicit QVector3D(const QVector4D& vector);
+#endif
+
+    bool isNull() const;
+
+    qreal x() const;
+    qreal y() const;
+    qreal z() const;
+
+    void setX(qreal x);
+    void setY(qreal y);
+    void setZ(qreal z);
+
+    qreal length() const;
+    qreal lengthSquared() const;
+
+    QVector3D normalized() const;
+    void normalize();
+
+    QVector3D &operator+=(const QVector3D &vector);
+    QVector3D &operator-=(const QVector3D &vector);
+    QVector3D &operator*=(qreal factor);
+    QVector3D &operator*=(const QVector3D& vector);
+    QVector3D &operator/=(qreal divisor);
+
+    static qreal dotProduct(const QVector3D& v1, const QVector3D& v2);
+    static QVector3D crossProduct(const QVector3D& v1, const QVector3D& v2);
+    static QVector3D normal(const QVector3D& v1, const QVector3D& v2);
+    static QVector3D normal
+        (const QVector3D& v1, const QVector3D& v2, const QVector3D& v3);
+
+    qreal distanceToPlane(const QVector3D& plane, const QVector3D& normal) const;
+    qreal distanceToPlane(const QVector3D& plane1, const QVector3D& plane2, const QVector3D& plane3) const;
+    qreal distanceToLine(const QVector3D& point, const QVector3D& direction) const;
+
+    friend inline bool operator==(const QVector3D &v1, const QVector3D &v2);
+    friend inline bool operator!=(const QVector3D &v1, const QVector3D &v2);
+    friend inline const QVector3D operator+(const QVector3D &v1, const QVector3D &v2);
+    friend inline const QVector3D operator-(const QVector3D &v1, const QVector3D &v2);
+    friend inline const QVector3D operator*(qreal factor, const QVector3D &vector);
+    friend inline const QVector3D operator*(const QVector3D &vector, qreal factor);
+    friend const QVector3D operator*(const QVector3D &v1, const QVector3D& v2);
+    friend inline const QVector3D operator-(const QVector3D &vector);
+    friend inline const QVector3D operator/(const QVector3D &vector, qreal divisor);
+
+    friend inline bool qFuzzyCompare(const QVector3D& v1, const QVector3D& v2);
+
+#ifndef QT_NO_VECTOR2D
+    QVector2D toVector2D() const;
+#endif
+#ifndef QT_NO_VECTOR4D
+    QVector4D toVector4D() const;
+#endif
+
+    QPoint toPoint() const;
+    QPointF toPointF() const;
+
+    operator QVariant() const;
+
+private:
+    float xp, yp, zp;
+
+    QVector3D(float xpos, float ypos, float zpos, int dummy);
+
+    friend class QVector2D;
+    friend class QVector4D;
+#ifndef QT_NO_MATRIX4X4
+    friend QVector3D operator*(const QVector3D& vector, const QMatrix4x4& matrix);
+    friend QVector3D operator*(const QMatrix4x4& matrix, const QVector3D& vector);
+#endif
+};
+
+inline QVector3D::QVector3D() : xp(0.0f), yp(0.0f), zp(0.0f) {}
+
+inline QVector3D::QVector3D(qreal xpos, qreal ypos, qreal zpos) : xp(xpos), yp(ypos), zp(zpos) {}
+
+inline QVector3D::QVector3D(float xpos, float ypos, float zpos, int) : xp(xpos), yp(ypos), zp(zpos) {}
+
+inline QVector3D::QVector3D(const QPoint& point) : xp(point.x()), yp(point.y()), zp(0.0f) {}
+
+inline QVector3D::QVector3D(const QPointF& point) : xp(point.x()), yp(point.y()), zp(0.0f) {}
+
+inline bool QVector3D::isNull() const
+{
+    return qIsNull(xp) && qIsNull(yp) && qIsNull(zp);
+}
+
+inline qreal QVector3D::x() const { return qreal(xp); }
+inline qreal QVector3D::y() const { return qreal(yp); }
+inline qreal QVector3D::z() const { return qreal(zp); }
+
+inline void QVector3D::setX(qreal aX) { xp = aX; }
+inline void QVector3D::setY(qreal aY) { yp = aY; }
+inline void QVector3D::setZ(qreal aZ) { zp = aZ; }
+
+inline QVector3D &QVector3D::operator+=(const QVector3D &vector)
+{
+    xp += vector.xp;
+    yp += vector.yp;
+    zp += vector.zp;
+    return *this;
+}
+
+inline QVector3D &QVector3D::operator-=(const QVector3D &vector)
+{
+    xp -= vector.xp;
+    yp -= vector.yp;
+    zp -= vector.zp;
+    return *this;
+}
+
+inline QVector3D &QVector3D::operator*=(qreal factor)
+{
+    xp *= factor;
+    yp *= factor;
+    zp *= factor;
+    return *this;
+}
+
+inline QVector3D &QVector3D::operator*=(const QVector3D& vector)
+{
+    xp *= vector.xp;
+    yp *= vector.yp;
+    zp *= vector.zp;
+    return *this;
+}
+
+inline QVector3D &QVector3D::operator/=(qreal divisor)
+{
+    xp /= divisor;
+    yp /= divisor;
+    zp /= divisor;
+    return *this;
+}
+
+inline bool operator==(const QVector3D &v1, const QVector3D &v2)
+{
+    return v1.xp == v2.xp && v1.yp == v2.yp && v1.zp == v2.zp;
+}
+
+inline bool operator!=(const QVector3D &v1, const QVector3D &v2)
+{
+    return v1.xp != v2.xp || v1.yp != v2.yp || v1.zp != v2.zp;
+}
+
+inline const QVector3D operator+(const QVector3D &v1, const QVector3D &v2)
+{
+    return QVector3D(v1.xp + v2.xp, v1.yp + v2.yp, v1.zp + v2.zp, 1);
+}
+
+inline const QVector3D operator-(const QVector3D &v1, const QVector3D &v2)
+{
+    return QVector3D(v1.xp - v2.xp, v1.yp - v2.yp, v1.zp - v2.zp, 1);
+}
+
+inline const QVector3D operator*(qreal factor, const QVector3D &vector)
+{
+    return QVector3D(vector.xp * factor, vector.yp * factor, vector.zp * factor, 1);
+}
+
+inline const QVector3D operator*(const QVector3D &vector, qreal factor)
+{
+    return QVector3D(vector.xp * factor, vector.yp * factor, vector.zp * factor, 1);
+}
+
+inline const QVector3D operator*(const QVector3D &v1, const QVector3D& v2)
+{
+    return QVector3D(v1.xp * v2.xp, v1.yp * v2.yp, v1.zp * v2.zp, 1);
+}
+
+inline const QVector3D operator-(const QVector3D &vector)
+{
+    return QVector3D(-vector.xp, -vector.yp, -vector.zp, 1);
+}
+
+inline const QVector3D operator/(const QVector3D &vector, qreal divisor)
+{
+    return QVector3D(vector.xp / divisor, vector.yp / divisor, vector.zp / divisor, 1);
+}
+
+inline bool qFuzzyCompare(const QVector3D& v1, const QVector3D& v2)
+{
+    return qFuzzyCompare(v1.xp, v2.xp) &&
+           qFuzzyCompare(v1.yp, v2.yp) &&
+           qFuzzyCompare(v1.zp, v2.zp);
+}
+
+inline QPoint QVector3D::toPoint() const
+{
+    return QPoint(qRound(xp), qRound(yp));
+}
+
+inline QPointF QVector3D::toPointF() const
+{
+    return QPointF(qreal(xp), qreal(yp));
+}
+
+#ifndef QT_NO_DEBUG_STREAM
+Q_GUI_EXPORT QDebug operator<<(QDebug dbg, const QVector3D &vector);
+#endif
+
+#ifndef QT_NO_DATASTREAM
+Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QVector3D &);
+Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QVector3D &);
+#endif
+
+#endif
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif