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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qdoublevector2d_p.h"
#include "qdoublevector3d_p.h"
#include <QtCore/qdatastream.h>
#include <QtCore/qdebug.h>
#include <QtCore/qmath.h>
QT_BEGIN_NAMESPACE
QDoubleVector2D::QDoubleVector2D(const QDoubleVector3D &vector) :
xp(vector.xp), yp(vector.yp)
{
}
double QDoubleVector2D::length() const
{
return qSqrt(xp * xp + yp * yp);
}
QDoubleVector2D QDoubleVector2D::normalized() const
{
// Need some extra precision if the length is very small.
double len = double(xp) * double(xp) +
double(yp) * double(yp);
if (qFuzzyIsNull(len - 1.0))
return *this;
else if (!qFuzzyIsNull(len))
return *this / (double)qSqrt(len);
else
return QDoubleVector2D();
}
void QDoubleVector2D::normalize()
{
// Need some extra precision if the length is very small.
double len = double(xp) * double(xp) +
double(yp) * double(yp);
if (qFuzzyIsNull(len - 1.0) || qFuzzyIsNull(len))
return;
len = qSqrt(len);
xp /= len;
yp /= len;
}
QDoubleVector3D QDoubleVector2D::toVector3D() const
{
return QDoubleVector3D(xp, yp, 0.0);
}
#ifndef QT_NO_DEBUG_STREAM
QDebug operator<<(QDebug dbg, const QDoubleVector2D &vector)
{
QDebugStateSaver saver(dbg);
dbg.nospace() << "QDoubleVector2D(" << vector.x() << ", " << vector.y() << ')';
return dbg;
}
#endif
#ifndef QT_NO_DATASTREAM
QDataStream &operator<<(QDataStream &stream, const QDoubleVector2D &vector)
{
stream << double(vector.x()) << double(vector.y());
return stream;
}
QDataStream &operator>>(QDataStream &stream, QDoubleVector2D &vector)
{
double x, y;
stream >> x;
stream >> y;
vector.setX(double(x));
vector.setY(double(y));
return stream;
}
#endif // QT_NO_DATASTREAM
QT_END_NAMESPACE
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