| 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 WANDERAFFECTOR_H |
| 5 | #define WANDERAFFECTOR_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 <QHash> |
| 18 | #include "qquickparticleaffector_p.h" |
| 19 | |
| 20 | QT_BEGIN_NAMESPACE |
| 21 | |
| 22 | struct WanderData{ |
| 23 | qreal x_vel; |
| 24 | qreal y_vel; |
| 25 | qreal x_peak; |
| 26 | qreal x_var; |
| 27 | qreal y_peak; |
| 28 | qreal y_var; |
| 29 | }; |
| 30 | |
| 31 | class Q_QUICKPARTICLES_EXPORT QQuickWanderAffector : public QQuickParticleAffector |
| 32 | { |
| 33 | Q_OBJECT |
| 34 | Q_PROPERTY(qreal pace READ pace WRITE setPace NOTIFY paceChanged) |
| 35 | Q_PROPERTY(qreal xVariance READ xVariance WRITE setXVariance NOTIFY xVarianceChanged) |
| 36 | Q_PROPERTY(qreal yVariance READ yVariance WRITE setYVariance NOTIFY yVarianceChanged) |
| 37 | Q_PROPERTY(AffectableParameters affectedParameter READ affectedParameter WRITE setAffectedParameter NOTIFY affectedParameterChanged) |
| 38 | QML_NAMED_ELEMENT(Wander) |
| 39 | QML_ADDED_IN_VERSION(2, 0) |
| 40 | |
| 41 | public: |
| 42 | enum AffectableParameters { |
| 43 | Position, |
| 44 | Velocity, |
| 45 | Acceleration |
| 46 | }; |
| 47 | Q_ENUM(AffectableParameters) |
| 48 | |
| 49 | explicit QQuickWanderAffector(QQuickItem *parent = nullptr); |
| 50 | ~QQuickWanderAffector(); |
| 51 | // virtual void reset(int systemIdx); |
| 52 | |
| 53 | qreal xVariance() const |
| 54 | { |
| 55 | return m_xVariance; |
| 56 | } |
| 57 | |
| 58 | qreal yVariance() const |
| 59 | { |
| 60 | return m_yVariance; |
| 61 | } |
| 62 | |
| 63 | qreal pace() const |
| 64 | { |
| 65 | return m_pace; |
| 66 | } |
| 67 | |
| 68 | AffectableParameters affectedParameter() const |
| 69 | { |
| 70 | return m_affectedParameter; |
| 71 | } |
| 72 | |
| 73 | protected: |
| 74 | bool affectParticle(QQuickParticleData *d, qreal dt) override; |
| 75 | |
| 76 | Q_SIGNALS: |
| 77 | |
| 78 | void xVarianceChanged(qreal arg); |
| 79 | |
| 80 | void yVarianceChanged(qreal arg); |
| 81 | |
| 82 | void paceChanged(qreal arg); |
| 83 | |
| 84 | |
| 85 | void affectedParameterChanged(AffectableParameters arg); |
| 86 | |
| 87 | public Q_SLOTS: |
| 88 | void setXVariance(qreal arg) |
| 89 | { |
| 90 | if (m_xVariance != arg) { |
| 91 | m_xVariance = arg; |
| 92 | Q_EMIT xVarianceChanged(arg); |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | void setYVariance(qreal arg) |
| 97 | { |
| 98 | if (m_yVariance != arg) { |
| 99 | m_yVariance = arg; |
| 100 | Q_EMIT yVarianceChanged(arg); |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | void setPace(qreal arg) |
| 105 | { |
| 106 | if (m_pace != arg) { |
| 107 | m_pace = arg; |
| 108 | Q_EMIT paceChanged(arg); |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | |
| 113 | void setAffectedParameter(AffectableParameters arg) |
| 114 | { |
| 115 | if (m_affectedParameter != arg) { |
| 116 | m_affectedParameter = arg; |
| 117 | Q_EMIT affectedParameterChanged(arg); |
| 118 | } |
| 119 | } |
| 120 | |
| 121 | private: |
| 122 | WanderData* getData(int idx); |
| 123 | QHash<int, WanderData*> m_wanderData; |
| 124 | qreal m_xVariance; |
| 125 | qreal m_yVariance; |
| 126 | qreal m_pace; |
| 127 | AffectableParameters m_affectedParameter; |
| 128 | }; |
| 129 | |
| 130 | QT_END_NAMESPACE |
| 131 | #endif // WANDERAFFECTOR_H |
| 132 |