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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 TURBULENCEAFFECTOR_H
-#define TURBULENCEAFFECTOR_H
-#include "qquickparticleaffector_p.h"
-#include <QDeclarativeListProperty>
-
-QT_BEGIN_HEADER
-
-QT_BEGIN_NAMESPACE
-
-QT_MODULE(Declarative)
-
-
-class QQuickParticlePainter;
-
-class QQuickTurbulenceAffector : public QQuickParticleAffector
-{
- Q_OBJECT
- Q_PROPERTY(qreal strength READ strength WRITE setStrength NOTIFY strengthChanged)
- Q_PROPERTY(QUrl noiseSource READ noiseSource WRITE setNoiseSource NOTIFY noiseSourceChanged)
- public:
- explicit QQuickTurbulenceAffector(QQuickItem *parent = 0);
- ~QQuickTurbulenceAffector();
- virtual void affectSystem(qreal dt);
-
- qreal strength() const
- {
- return m_strength;
- }
-
- QUrl noiseSource() const
- {
- return m_noiseSource;
- }
-signals:
-
- void strengthChanged(qreal arg);
-
- void noiseSourceChanged(QUrl arg);
-
-public slots:
-
- void setStrength(qreal arg)
- {
- if (m_strength != arg) {
- m_strength = arg;
- emit strengthChanged(arg);
- }
- }
-
- void setNoiseSource(QUrl arg)
- {
- if (m_noiseSource != arg) {
- m_noiseSource = arg;
- emit noiseSourceChanged(arg);
- initializeGrid();
- }
- }
-
-protected:
- virtual void geometryChanged(const QRectF &newGeometry,
- const QRectF &oldGeometry);
-private:
- void ensureInit();
- void mapUpdate();
- void initializeGrid();
- qreal boundsRespectingField(int x, int y);
- qreal m_strength;
- qreal m_lastT;
- int m_gridSize;
- qreal** m_field;
- QPointF** m_vectorField;
- bool m_inited;
- QUrl m_noiseSource;
-};
-
-QT_END_NAMESPACE
-QT_END_HEADER
-#endif // TURBULENCEAFFECTOR_H