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3** Copyright (C) 2016 The Qt Company Ltd.
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6** This file is part of the QtPositioning module of the Qt Toolkit.
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39
40#include "qdoublevector2d_p.h"
41#include "qdoublevector3d_p.h"
42#include <QtCore/qdatastream.h>
43#include <QtCore/qdebug.h>
44#include <QtCore/qmath.h>
45
46QT_BEGIN_NAMESPACE
47
48QDoubleVector2D::QDoubleVector2D(const QDoubleVector3D &vector) :
49 xp(vector.xp), yp(vector.yp)
50{
51}
52
53double QDoubleVector2D::length() const
54{
55 return qSqrt(v: xp * xp + yp * yp);
56}
57
58QDoubleVector2D QDoubleVector2D::normalized() const
59{
60 // Need some extra precision if the length is very small.
61 double len = double(xp) * double(xp) +
62 double(yp) * double(yp);
63 if (qFuzzyIsNull(d: len - 1.0))
64 return *this;
65 else if (!qFuzzyIsNull(d: len))
66 return *this / (double)qSqrt(v: len);
67 else
68 return QDoubleVector2D();
69}
70
71void QDoubleVector2D::normalize()
72{
73 // Need some extra precision if the length is very small.
74 double len = double(xp) * double(xp) +
75 double(yp) * double(yp);
76 if (qFuzzyIsNull(d: len - 1.0) || qFuzzyIsNull(d: len))
77 return;
78
79 len = qSqrt(v: len);
80
81 xp /= len;
82 yp /= len;
83}
84
85QDoubleVector3D QDoubleVector2D::toVector3D() const
86{
87 return QDoubleVector3D(xp, yp, 0.0);
88}
89
90#ifndef QT_NO_DEBUG_STREAM
91
92QDebug operator<<(QDebug dbg, const QDoubleVector2D &vector)
93{
94 QDebugStateSaver saver(dbg);
95 dbg.nospace() << "QDoubleVector2D(" << vector.x() << ", " << vector.y() << ')';
96 return dbg;
97}
98
99#endif
100
101#ifndef QT_NO_DATASTREAM
102
103QDataStream &operator<<(QDataStream &stream, const QDoubleVector2D &vector)
104{
105 stream << double(vector.x()) << double(vector.y());
106 return stream;
107}
108
109QDataStream &operator>>(QDataStream &stream, QDoubleVector2D &vector)
110{
111 double x, y;
112 stream >> x;
113 stream >> y;
114 vector.setX(double(x));
115 vector.setY(double(y));
116 return stream;
117}
118
119#endif // QT_NO_DATASTREAM
120
121QT_END_NAMESPACE
122

source code of qtlocation/src/positioning/qdoublevector2d.cpp