1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
/****************************************************************************
**
** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL3$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPLv3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or later 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 2.0 requirements will be
** met: http://www.gnu.org/licenses/gpl-2.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QT3D_QAXISALIGNEDBOUNDINGBOX_H
#define QT3D_QAXISALIGNEDBOUNDINGBOX_H
#include <Qt3DCore/qt3dcore_global.h>
#include <QMatrix4x4>
#include <QVector>
#include <QVector3D>
QT_BEGIN_NAMESPACE
class QDebug;
namespace Qt3D {
class QT3DCORESHARED_EXPORT QAxisAlignedBoundingBox
{
public:
inline QAxisAlignedBoundingBox()
: m_center(),
m_radii()
{}
inline explicit QAxisAlignedBoundingBox(const QVector<QVector3D> &points)
: m_center(),
m_radii()
{
update(points);
}
void clear()
{
m_center = QVector3D();
m_radii = QVector3D();
}
void update(const QVector<QVector3D> &points);
inline QVector3D center() const { return m_center; }
inline QVector3D radii() const { return m_radii; }
inline QVector3D minPoint() const { return m_center - m_radii; }
inline QVector3D maxPoint() const { return m_center + m_radii; }
inline float xExtent() const { return 2.0f * m_radii.x(); }
inline float yExtent() const { return 2.0f * m_radii.y(); }
inline float zExtent() const { return 2.0f * m_radii.z(); }
inline float maxExtent() const { return qMax( xExtent(), qMax( yExtent(), zExtent() ) ); }
inline float minExtent() const { return qMin( xExtent(), qMin( yExtent(), zExtent() ) ); }
inline bool contains( const QVector3D& pt ) const
{
QVector3D minP(minPoint()), maxP(maxPoint());
if ((pt.x() < minP.x()) || (pt.x() > maxP.x()) ||
(pt.y() < minP.y()) || (pt.y() > maxP.y()) ||
(pt.z() < minP.z()) || (pt.z() > maxP.z()) )
{
return false;
}
return true;
}
inline void expandToContain(const QVector3D &pt)
{
QVector<QVector3D> pts = QVector<QVector3D>() << pt;
update(pts);
}
inline void expandToContain(const QAxisAlignedBoundingBox &other)
{
QVector<QVector3D> pts = QVector<QVector3D>() << other.minPoint() << other.maxPoint();
update(pts);
}
inline QAxisAlignedBoundingBox transformBy(const QMatrix4x4 &mat) const
{
QAxisAlignedBoundingBox r;
r.m_center = mat.map(m_center);
r.m_radii = mat.map(m_radii);
return r;
}
inline QAxisAlignedBoundingBox &transform(const QMatrix4x4 &mat)
{
m_center = mat.map(m_center);
m_radii = mat.map(m_radii);
return *this;
}
private:
QVector3D m_center;
QVector3D m_radii;
friend bool intersects(const QAxisAlignedBoundingBox &a,
const QAxisAlignedBoundingBox &b);
};
QT3DCORESHARED_EXPORT QDebug operator<<(QDebug dbg, const QAxisAlignedBoundingBox &c);
inline bool intersects(const QAxisAlignedBoundingBox &a,
const QAxisAlignedBoundingBox &b)
{
// Test y axis last as this is often the least discriminatory in OpenGL applications
// where worlds tend to be mostly in the xz-plane
if (qAbs(a.m_center[0] - b.m_center[0]) > a.m_radii[0] + b.m_radii[0])
return false;
if (qAbs(a.m_center[2] - b.m_center[2]) > a.m_radii[2] + b.m_radii[2])
return false;
if (qAbs(a.m_center[1] - b.m_center[1]) > a.m_radii[1] + b.m_radii[1])
return false;
return true;
}
} // namespace Qt3D
QT_END_NAMESPACE
#endif // QT3D_QAXISALIGNEDBOUNDINGBOX_H
|
