source: trunk/src/gui/math3d/qvector4d.cpp@ 858

Last change on this file since 858 was 846, checked in by Dmitry A. Kuminov, 14 years ago

trunk: Merged in qt 4.7.2 sources from branches/vendor/nokia/qt.

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1/****************************************************************************
2**
3** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
4** All rights reserved.
5** Contact: Nokia Corporation ([email protected])
6**
7** This file is part of the QtGui module of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:LGPL$
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12** accordance with the Qt Commercial License Agreement provided with the
13** Software or, alternatively, in accordance with the terms contained in
14** a written agreement between you and Nokia.
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16** GNU Lesser General Public License Usage
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18** General Public License version 2.1 as published by the Free Software
19** Foundation and appearing in the file LICENSE.LGPL included in the
20** packaging of this file. Please review the following information to
21** ensure the GNU Lesser General Public License version 2.1 requirements
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24** In addition, as a special exception, Nokia gives you certain additional
25** rights. These rights are described in the Nokia Qt LGPL Exception
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28** GNU General Public License Usage
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40****************************************************************************/
41
42#include "qvector4d.h"
43#include "qvector3d.h"
44#include "qvector2d.h"
45#include <QtCore/qdebug.h>
46#include <QtCore/qvariant.h>
47#include <QtCore/qmath.h>
48
49QT_BEGIN_NAMESPACE
50
51#ifndef QT_NO_VECTOR4D
52
53/*!
54 \class QVector4D
55 \brief The QVector4D class represents a vector or vertex in 4D space.
56 \since 4.6
57 \ingroup painting-3D
58
59 The QVector4D class can also be used to represent vertices in 4D space.
60 We therefore do not need to provide a separate vertex class.
61
62 \sa QQuaternion, QVector2D, QVector3D
63*/
64
65/*!
66 \fn QVector4D::QVector4D()
67
68 Constructs a null vector, i.e. with coordinates (0, 0, 0, 0).
69*/
70
71/*!
72 \fn QVector4D::QVector4D(qreal xpos, qreal ypos, qreal zpos, qreal wpos)
73
74 Constructs a vector with coordinates (\a xpos, \a ypos, \a zpos, \a wpos).
75*/
76
77/*!
78 \fn QVector4D::QVector4D(const QPoint& point)
79
80 Constructs a vector with x and y coordinates from a 2D \a point, and
81 z and w coordinates of 0.
82*/
83
84/*!
85 \fn QVector4D::QVector4D(const QPointF& point)