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Diffstat (limited to 'src/quick/particles/qquickturbulence_p.h')
-rw-r--r-- | src/quick/particles/qquickturbulence_p.h | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/src/quick/particles/qquickturbulence_p.h b/src/quick/particles/qquickturbulence_p.h new file mode 100644 index 0000000000..b7eb7e662f --- /dev/null +++ b/src/quick/particles/qquickturbulence_p.h @@ -0,0 +1,116 @@ +/**************************************************************************** +** +** 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 + +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 |