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Diffstat (limited to 'src/declarative/particles/qsgpointattractor_p.h')
-rw-r--r-- | src/declarative/particles/qsgpointattractor_p.h | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/src/declarative/particles/qsgpointattractor_p.h b/src/declarative/particles/qsgpointattractor_p.h new file mode 100644 index 0000000000..3ca29dfa96 --- /dev/null +++ b/src/declarative/particles/qsgpointattractor_p.h @@ -0,0 +1,168 @@ +/**************************************************************************** +** +** 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 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) + 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 |