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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Declarative module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef TURBULENCEAFFECTOR_H
#define TURBULENCEAFFECTOR_H
#include "particleaffector.h"
#include <QDeclarativeListProperty>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Declarative)
class ParticleType;
class TurbulenceAffector : public ParticleAffector
{
Q_OBJECT
Q_PROPERTY(int strength READ strength WRITE setStrength NOTIFY strengthChanged)
Q_PROPERTY(int frequency READ frequency WRITE setFrequency NOTIFY frequencyChanged)
Q_PROPERTY(int gridSize READ size WRITE setSize NOTIFY sizeChanged)
public:
explicit TurbulenceAffector(QSGItem *parent = 0);
~TurbulenceAffector();
virtual void affectSystem(qreal dt);
int strength() const
{
return m_strength;
}
int frequency() const
{
return m_frequency;
}
int size() const
{
return m_gridSize;
}
signals:
void strengthChanged(int arg);
void frequencyChanged(int arg);
void sizeChanged(int arg);
public slots:
void setStrength(int arg)
{
if (m_strength != arg) {
m_strength = arg;
emit strengthChanged(arg);
}
}
void setFrequency(int arg)
{
if (m_frequency != arg) {
m_frequency = arg;
emit frequencyChanged(arg);
}
}
void setSize(int arg);
private:
void ensureInit();
void mapUpdate();
int m_strength;
qreal m_lastT;
int m_frequency;
int m_gridSize;
QPointF** m_field;
QPointF m_spacing;
qreal m_magSum;
bool m_inited;
};
QT_END_NAMESPACE
QT_END_HEADER
#endif // TURBULENCEAFFECTOR_H
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