source: trunk/src/gui/math3d/qvector4d.h@ 605

Last change on this file since 605 was 561, checked in by Dmitry A. Kuminov, 15 years ago

trunk: Merged in qt 4.6.1 sources.
  • Property svn:eol-style set to native
File size: 8.7 KB
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1/****************************************************************************
2**
3** Copyright (C) 2009 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** $QT_BEGIN_LICENSE:LGPL$
10** Commercial Usage
11** Licensees holding valid Qt Commercial licenses may use this file in
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.
15**
16** GNU Lesser General Public License Usage
17** Alternatively, this file may be used under the terms of the GNU Lesser
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
22** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
23**
24** In addition, as a special exception, Nokia gives you certain additional
25** rights. These rights are described in the Nokia Qt LGPL Exception
26** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
27**
28** GNU General Public License Usage
29** Alternatively, this file may be used under the terms of the GNU
30** General Public License version 3.0 as published by the Free Software
31** Foundation and appearing in the file LICENSE.GPL included in the
32** packaging of this file. Please review the following information to
33** ensure the GNU General Public License version 3.0 requirements will be
34** met: http://www.gnu.org/copyleft/gpl.html.
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40****************************************************************************/
41
42#ifndef QVECTOR4D_H
43#define QVECTOR4D_H
44
45#include <QtCore/qpoint.h>
46#include <QtCore/qmetatype.h>
47
48QT_BEGIN_HEADER
49
50QT_BEGIN_NAMESPACE
51
52QT_MODULE(Gui)
53
54class QMatrix4x4;
55class QVector2D;
56class QVector3D;
57
58#ifndef QT_NO_VECTOR4D
59
60class Q_GUI_EXPORT QVector4D
61{
62public:
63 QVector4D();
64 QVector4D(qreal xpos, qreal ypos, qreal zpos, qreal wpos);
65 explicit QVector4D(const QPoint& point);
66 explicit QVector4D(const QPointF& point);
67#ifndef QT_NO_VECTOR2D
68 QVector4D(const QVector2D& vector);
69 QVector4D(const QVector2D& vector, qreal zpos, qreal wpos);
70#endif
71#ifndef QT_NO_VECTOR3D
72 QVector4D(const QVector3D& vector);
73 QVector4D(const QVector3D& vector, qreal wpos);
74#endif
75
76 bool isNull() const;
77
78 qreal x() const;
79 qreal y() const;
80 qreal z() const;
81 qreal w() const;
82
83 void setX(qreal x);
84 void setY(qreal y);
85 void setZ(qreal z);
86 void setW(qreal w);
87
88 qreal length() const;
89 qreal lengthSquared() const;
90
91 QVector4D normalized() const;
92 void normalize();
93
94 QVector4D &operator+=(const QVector4D &vector);
95 QVector4D &operator-=(const QVector4D &vector);
96 QVector4D &operator*=(qreal factor);
97 QVector4D &operator*=(const QVector4D &vector);
98 QVector4D &operator/=(qreal divisor);
99
100 static qreal dotProduct(const QVector4D& v1, const QVector4D& v2);
101
102 friend inline bool operator==(const QVector4D &v1, const QVector4D &v2);
103 friend inline bool operator!=(const QVector4D &v1, const QVector4D &v2);
104 friend inline const QVector4D operator+(const QVector4D &v1, const QVector4D &v2);
105 friend inline const QVector4D operator-(const QVector4D &v1, const QVector4D &v2);
106 friend inline const QVector4D operator*(qreal factor, const QVector4D &vector);
107 friend inline const QVector4D operator*(const QVector4D &vector, qreal factor);
108 friend inline const QVector4D operator*(const QVector4D &v1, const QVector4D& v2);
109 friend inline const QVector4D operator-(const QVector4D &vector);
110 friend inline const QVector4D operator/(const QVector4D &vector, qreal divisor);
111
112 friend inline bool qFuzzyCompare(const QVector4D& v1, const QVector4D& v2);
113
114#ifndef QT_NO_VECTOR2D
115 QVector2D toVector2D() const;
116 QVector2D toVector2DAffine() const;
117#endif
118#ifndef QT_NO_VECTOR3D
119 QVector3D toVector3D() const;
120 QVector3D toVector3DAffine() const;
121#endif
122
123 QPoint toPoint() const;
124 QPointF toPointF() const;
125
126 operator QVariant() const;
127
128private:
129 float xp, yp, zp, wp;
130
131 QVector4D(float xpos, float ypos, float zpos, float wpos, int dummy);
132
133 friend class QVector2D;
134 friend class QVector3D;
135#ifndef QT_NO_MATRIX4X4
136 friend QVector4D operator*(const QVector4D& vector, const QMatrix4x4& matrix);
137 friend QVector4D operator*(const QMatrix4x4& matrix, const QVector4D& vector);
138#endif
139};
140
141inline QVector4D::QVector4D() : xp(0.0f), yp(0.0f), zp(0.0f), wp(0.0f) {}
142
143inline QVector4D::QVector4D(qreal xpos, qreal ypos, qreal zpos, qreal wpos) : xp(xpos), yp(ypos), zp(zpos), wp(wpos) {}
144
145inline QVector4D::QVector4D(float xpos, float ypos, float zpos, float wpos, int) : xp(xpos), yp(ypos), zp(zpos), wp(wpos) {}
146
147inline QVector4D::QVector4D(const QPoint& point) : xp(point.x()), yp(point.y()), zp(0.0f), wp(0.0f) {}
148
149inline QVector4D::QVector4D(const QPointF& point) : xp(point.x()), yp(point.y()), zp(0.0f), wp(0.0f) {}
150
151inline bool QVector4D::isNull() const
152{
153 return qIsNull(xp) && qIsNull(yp) && qIsNull(zp) && qIsNull(wp);
154}
155
156inline qreal QVector4D::x() const { return qreal(xp); }
157inline qreal QVector4D::y() const { return qreal(yp); }
158inline qreal QVector4D::z() const { return qreal(zp); }
159inline qreal QVector4D::w() const { return qreal(wp); }
160
161inline void QVector4D::setX(qreal aX) { xp = aX; }
162inline void QVector4D::setY(qreal aY) { yp = aY; }
163inline void QVector4D::setZ(qreal aZ) { zp = aZ; }
164inline void QVector4D::setW(qreal aW) { wp = aW; }
165
166inline QVector4D &QVector4D::operator+=(const QVector4D &vector)
167{
168 xp += vector.xp;
169 yp += vector.yp;
170 zp += vector.zp;
171 wp += vector.wp;
172 return *this;
173}
174
175inline QVector4D &QVector4D::operator-=(const QVector4D &vector)
176{
177 xp -= vector.xp;
178 yp -= vector.yp;
179 zp -= vector.zp;
180 wp -= vector.wp;
181 return *this;
182}
183
184inline QVector4D &QVector4D::operator*=(qreal factor)
185{
186 xp *= factor;
187 yp *= factor;
188 zp *= factor;
189 wp *= factor;
190 return *this;
191}
192
193inline QVector4D &QVector4D::operator*=(const QVector4D &vector)
194{
195 xp *= vector.xp;
196 yp *= vector.yp;
197 zp *= vector.zp;
198 wp *= vector.wp;
199 return *this;
200}
201
202inline QVector4D &QVector4D::operator/=(qreal divisor)
203{
204 xp /= divisor;
205 yp /= divisor;
206 zp /= divisor;
207 wp /= divisor;
208 return *this;
209}
210
211inline bool operator==(const QVector4D &v1, const QVector4D &v2)
212{
213 return v1.xp == v2.xp && v1.yp == v2.yp && v1.zp == v2.zp && v1.wp == v2.wp;
214}
215
216inline bool operator!=(const QVector4D &v1, const QVector4D &v2)
217{
218 return v1.xp != v2.xp || v1.yp != v2.yp || v1.zp != v2.zp || v1.wp != v2.wp;
219}
220
221inline const QVector4D operator+(const QVector4D &v1, const QVector4D &v2)
222{
223 return QVector4D(v1.xp + v2.xp, v1.yp + v2.yp, v1.zp + v2.zp, v1.wp + v2.wp, 1);
224}
225
226inline const QVector4D operator-(const QVector4D &v1, const QVector4D &v2)
227{
228 return QVector4D(v1.xp - v2.xp, v1.yp - v2.yp, v1.zp - v2.zp, v1.wp - v2.wp, 1);
229}
230
231inline const QVector4D operator*(qreal factor, const QVector4D &vector)
232{
233 return QVector4D(vector.xp * factor, vector.yp * factor, vector.zp * factor, vector.wp * factor, 1);
234}
235
236inline const QVector4D operator*(const QVector4D &vector, qreal factor)
237{
238 return QVector4D(vector.xp * factor, vector.yp * factor, vector.zp * factor, vector.wp * factor, 1);
239}
240
241inline const QVector4D operator*(const QVector4D &v1, const QVector4D& v2)
242{
243 return QVector4D(v1.xp * v2.xp, v1.yp * v2.yp, v1.zp * v2.zp, v1.wp * v2.wp, 1);
244}
245
246inline const QVector4D operator-(const QVector4D &vector)
247{
248 return QVector4D(-vector.xp, -vector.yp, -vector.zp, -vector.wp, 1);
249}
250
251inline const QVector4D operator/(const QVector4D &vector, qreal divisor)
252{
253 return QVector4D(vector.xp / divisor, vector.yp / divisor, vector.zp / divisor, vector.wp / divisor, 1);
254}
255
256inline bool qFuzzyCompare(const QVector4D& v1, const QVector4D& v2)
257{
258 return qFuzzyCompare(v1.xp, v2.xp) &&
259 qFuzzyCompare(v1.yp, v2.yp) &&
260 qFuzzyCompare(v1.zp, v2.zp) &&
261 qFuzzyCompare(v1.wp, v2.wp);
262}
263
264inline QPoint QVector4D::toPoint() const
265{
266 return QPoint(qRound(xp), qRound(yp));
267}
268
269inline QPointF QVector4D::toPointF() const
270{
271 return QPointF(qreal(xp), qreal(yp));
272}
273
274#ifndef QT_NO_DEBUG_STREAM
275Q_GUI_EXPORT QDebug operator<<(QDebug dbg, const QVector4D &vector);
276#endif
277
278#ifndef QT_NO_DATASTREAM
279Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QVector4D &);
280Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QVector4D &);
281#endif
282
283#endif
284
285QT_END_NAMESPACE
286
287QT_END_HEADER
288
289#endif
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