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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtQuick module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/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 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef GRAVITYAFFECTOR_H
#define GRAVITYAFFECTOR_H
#include "qquickparticleaffector_p.h"
QT_BEGIN_NAMESPACE
class QQuickGravityAffector : public QQuickParticleAffector
{
Q_OBJECT
Q_PROPERTY(qreal magnitude READ magnitude WRITE setMagnitude NOTIFY magnitudeChanged)
Q_PROPERTY(qreal acceleration READ magnitude WRITE setAcceleration NOTIFY magnitudeChanged)
Q_PROPERTY(qreal angle READ angle WRITE setAngle NOTIFY angleChanged)
public:
explicit QQuickGravityAffector(QQuickItem *parent = 0);
qreal magnitude() const
{
return m_magnitude;
}
qreal angle() const
{
return m_angle;
}
protected:
virtual bool affectParticle(QQuickParticleData *d, qreal dt);
Q_SIGNALS:
void magnitudeChanged(qreal arg);
void angleChanged(qreal arg);
public Q_SLOTS:
void setAcceleration(qreal arg)
{
qWarning() << "Gravity::acceleration has been renamed Gravity::magnitude";
if (m_magnitude != arg) {
m_magnitude = arg;
m_needRecalc = true;
Q_EMIT magnitudeChanged(arg);
}
}
void setMagnitude(qreal arg)
{
if (m_magnitude != arg) {
m_magnitude = arg;
m_needRecalc = true;
Q_EMIT magnitudeChanged(arg);
}
}
void setAngle(qreal arg)
{
if (m_angle != arg) {
m_angle = arg;
m_needRecalc = true;
Q_EMIT angleChanged(arg);
}
}
private:
qreal m_magnitude;
qreal m_angle;
bool m_needRecalc;
qreal m_dx;
qreal m_dy;
};
QT_END_NAMESPACE
#endif // GRAVITYAFFECTOR_H
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