| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
|---|---|
| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
| 3 | |
| 4 | #ifndef GRAVITYAFFECTOR_H |
| 5 | #define GRAVITYAFFECTOR_H |
| 6 | |
| 7 | // |
| 8 | // W A R N I N G |
| 9 | // ------------- |
| 10 | // |
| 11 | // This file is not part of the Qt API. It exists purely as an |
| 12 | // implementation detail. This header file may change from version to |
| 13 | // version without notice, or even be removed. |
| 14 | // |
| 15 | // We mean it. |
| 16 | // |
| 17 | #include "qquickparticleaffector_p.h" |
| 18 | #include <QtQml/qqml.h> |
| 19 | |
| 20 | QT_BEGIN_NAMESPACE |
| 21 | |
| 22 | class Q_QUICKPARTICLES_PRIVATE_EXPORT QQuickGravityAffector : public QQuickParticleAffector |
| 23 | { |
| 24 | Q_OBJECT |
| 25 | Q_PROPERTY(qreal magnitude READ magnitude WRITE setMagnitude NOTIFY magnitudeChanged FINAL) |
| 26 | Q_PROPERTY(qreal acceleration READ magnitude WRITE setAcceleration NOTIFY magnitudeChanged FINAL) |
| 27 | Q_PROPERTY(qreal angle READ angle WRITE setAngle NOTIFY angleChanged FINAL) |
| 28 | QML_NAMED_ELEMENT(Gravity) |
| 29 | QML_ADDED_IN_VERSION(2, 0) |
| 30 | public: |
| 31 | explicit QQuickGravityAffector(QQuickItem *parent = nullptr); |
| 32 | qreal magnitude() const; |
| 33 | qreal angle() const; |
| 34 | |
| 35 | protected: |
| 36 | bool affectParticle(QQuickParticleData *d, qreal dt) override; |
| 37 | |
| 38 | Q_SIGNALS: |
| 39 | void magnitudeChanged(qreal arg); |
| 40 | void angleChanged(qreal arg); |
| 41 | |
| 42 | public Q_SLOTS: |
| 43 | void setMagnitude(qreal arg); |
| 44 | void setAcceleration(qreal arg); |
| 45 | void setAngle(qreal arg); |
| 46 | |
| 47 | private: |
| 48 | qreal m_magnitude; |
| 49 | qreal m_angle; |
| 50 | |
| 51 | bool m_needRecalc; |
| 52 | qreal m_dx; |
| 53 | qreal m_dy; |
| 54 | }; |
| 55 | |
| 56 | QT_END_NAMESPACE |
| 57 | #endif // GRAVITYAFFECTOR_H |
| 58 |