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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.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef ATTRACTORAFFECTOR_H
#define ATTRACTORAFFECTOR_H
#include "qsgparticleaffector_p.h"
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Declarative)
class QSGPointAttractorAffector : public QSGParticleAffector
{
Q_OBJECT
//Like Gravitational singularity, but linear to distance instead of quadratic
//And affects ds/dt, not da/dt
Q_PROPERTY(qreal strength READ strength WRITE setStrength NOTIFY strengthChanged)
Q_PROPERTY(qreal x READ x WRITE setX NOTIFY xChanged)//TODO: Change to pointX, pointY
Q_PROPERTY(qreal y READ y WRITE setY NOTIFY yChanged)
Q_PROPERTY(PhysicsAffects physics READ physics WRITE setPhysics NOTIFY physicsChanged)
Q_PROPERTY(Proportion proportionalToDistance READ proportionalToDistance WRITE setProportionalToDistance NOTIFY proportionalToDistanceChanged)
Q_ENUMS(PhysicsAffects)
Q_ENUMS(Proportion)
public:
enum Proportion{
Linear,
Quadratic
};
enum PhysicsAffects {
Position,
Velocity,
Acceleration
};
explicit QSGPointAttractorAffector(QSGItem *parent = 0);
qreal strength() const
{
return m_strength;
}
qreal x() const
{
return m_x;
}
qreal y() const
{
return m_y;
}
PhysicsAffects physics() const
{
return m_physics;
}
Proportion proportionalToDistance() const
{
return m_proportionalToDistance;
}
signals:
void strengthChanged(qreal arg);
void xChanged(qreal arg);
void yChanged(qreal arg);
void physicsChanged(PhysicsAffects arg);
void proportionalToDistanceChanged(Proportion arg);
public slots:
void setStrength(qreal arg)
{
if (m_strength != arg) {
m_strength = arg;
emit strengthChanged(arg);
}
}
void setX(qreal arg)
{
if (m_x != arg) {
m_x = arg;
emit xChanged(arg);
}
}
void setY(qreal arg)
{
if (m_y != arg) {
m_y = arg;
emit yChanged(arg);
}
}
void setPhysics(PhysicsAffects arg)
{
if (m_physics != arg) {
m_physics = arg;
emit physicsChanged(arg);
}
}
void setProportionalToDistance(Proportion arg)
{
if (m_proportionalToDistance != arg) {
m_proportionalToDistance = arg;
emit proportionalToDistanceChanged(arg);
}
}
protected:
virtual bool affectParticle(QSGParticleData *d, qreal dt);
private:
qreal m_strength;
qreal m_x;
qreal m_y;
PhysicsAffects m_physics;
Proportion m_proportionalToDistance;
};
QT_END_NAMESPACE
QT_END_HEADER
#endif // ATTRACTORAFFECTOR_H
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