qquickangledirection.cpp

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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 "qquickangledirection_p.h"
#include <QRandomGenerator>
#include <qmath.h>
 
QT_BEGIN_NAMESPACE
const qreal CONV = 0.017453292519943295;
QQuickAngleDirection::QQuickAngleDirection(QObject *parent) :
    QQuickDirection(parent)
  , m_angle(0)
  , m_magnitude(0)
  , m_angleVariation(0)
  , m_magnitudeVariation(0)
{
 
}
 
QPointF QQuickAngleDirection::sample(const QPointF &from)
{
    Q_UNUSED(from);
    QPointF ret;
    qreal theta = m_angle*CONV - m_angleVariation*CONV + QRandomGenerator::global()->generateDouble() * m_angleVariation*CONV * 2;
    qreal mag = m_magnitude- m_magnitudeVariation + QRandomGenerator::global()->generateDouble() * m_magnitudeVariation * 2;
    ret.setX(mag * qCos(theta));
    ret.setY(mag * qSin(theta));
    return ret;
}
 
QT_END_NAMESPACE
 
#include "moc_qquickangledirection_p.cpp"