Initial import from the monolithic Qt.

This is the beginning of revision history for this module. If you
want to look at revision history older than this, please refer to the
Qt Git wiki for how to use Git history grafting. At the time of
writing, this wiki is located here:

http://qt.gitorious.org/qt/pages/GitIntroductionWithQt

If you have already performed the grafting and you don't see any
history beyond this commit, try running "git log" with the "--follow"
argument.

Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 286 insertions, 0 deletions

diff --git a/src/gui/math3d/qvector3d.h b/src/gui/math3d/qvector3d.h
new file mode 100644
index 0000000000..c33cf42d4b
--- /dev/null
+++ b/src/gui/math3d/qvector3d.h
@@ -0,0 +1,286 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** 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.
+**
+** 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
+};
+
+Q_DECLARE_TYPEINFO(QVector3D, Q_MOVABLE_TYPE);
+
+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