1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2016 The Qt Company Ltd. 4 ** Contact: https://www.qt.io/licensing/ 5 ** 6 ** This file is part of the QtQuick module of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:LGPL$ 9 ** Commercial License Usage 10 ** Licensees holding valid commercial Qt licenses may use this file in 11 ** accordance with the commercial license agreement provided with the 12 ** Software or, alternatively, in accordance with the terms contained in 13 ** a written agreement between you and The Qt Company. For licensing terms 14 ** and conditions see https://www.qt.io/terms-conditions. For further 15 ** information use the contact form at https://www.qt.io/contact-us. 16 ** 17 ** GNU Lesser General Public License Usage 18 ** Alternatively, this file may be used under the terms of the GNU Lesser 19 ** General Public License version 3 as published by the Free Software 20 ** Foundation and appearing in the file LICENSE.LGPL3 included in the 21 ** packaging of this file. Please review the following information to 22 ** ensure the GNU Lesser General Public License version 3 requirements 23 ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. 24 ** 25 ** GNU General Public License Usage 26 ** Alternatively, this file may be used under the terms of the GNU 27 ** General Public License version 2.0 or (at your option) the GNU General 28 ** Public license version 3 or any later version approved by the KDE Free 29 ** Qt Foundation. The licenses are as published by the Free Software 30 ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 31 ** included in the packaging of this file. Please review the following 32 ** information to ensure the GNU General Public License requirements will 33 ** be met: https://www.gnu.org/licenses/gpl-2.0.html and 34 ** https://www.gnu.org/licenses/gpl-3.0.html. 35 ** 36 ** $QT_END_LICENSE$ 37 ** 38 ****************************************************************************/ 39 40 #ifndef WANDERAFFECTOR_H 41 #define WANDERAFFECTOR_H 42 43 // 44 // W A R N I N G 45 // ------------- 46 // 47 // This file is not part of the Qt API. It exists purely as an 48 // implementation detail. This header file may change from version to 49 // version without notice, or even be removed. 50 // 51 // We mean it. 52 // 53 #include <QHash> 54 #include "qquickparticleaffector_p.h" 55 56 QT_BEGIN_NAMESPACE 57 58 struct WanderData{ 59 qreal x_vel; 60 qreal y_vel; 61 qreal x_peak; 62 qreal x_var; 63 qreal y_peak; 64 qreal y_var; 65 }; 66 67 class QQuickWanderAffector : public QQuickParticleAffector 68 { 69 Q_OBJECT 70 Q_PROPERTY(qreal pace READ pace WRITE setPace NOTIFY paceChanged) 71 Q_PROPERTY(qreal xVariance READ xVariance WRITE setXVariance NOTIFY xVarianceChanged) 72 Q_PROPERTY(qreal yVariance READ yVariance WRITE setYVariance NOTIFY yVarianceChanged) 73 Q_PROPERTY(AffectableParameters affectedParameter READ affectedParameter WRITE setAffectedParameter NOTIFY affectedParameterChanged) 74 QML_NAMED_ELEMENT(Wander) 75 76 public: 77 enum AffectableParameters { 78 Position, 79 Velocity, 80 Acceleration 81 }; 82 Q_ENUM(AffectableParameters) 83 84 explicit QQuickWanderAffector(QQuickItem *parent = 0); 85 ~QQuickWanderAffector(); 86 // virtual void reset(int systemIdx); 87 xVariance()88 qreal xVariance() const 89 { 90 return m_xVariance; 91 } 92 yVariance()93 qreal yVariance() const 94 { 95 return m_yVariance; 96 } 97 pace()98 qreal pace() const 99 { 100 return m_pace; 101 } 102 affectedParameter()103 AffectableParameters affectedParameter() const 104 { 105 return m_affectedParameter; 106 } 107 108 protected: 109 bool affectParticle(QQuickParticleData *d, qreal dt) override; 110 111 Q_SIGNALS: 112 113 void xVarianceChanged(qreal arg); 114 115 void yVarianceChanged(qreal arg); 116 117 void paceChanged(qreal arg); 118 119 120 void affectedParameterChanged(AffectableParameters arg); 121 122 public Q_SLOTS: setXVariance(qreal arg)123void setXVariance(qreal arg) 124 { 125 if (m_xVariance != arg) { 126 m_xVariance = arg; 127 Q_EMIT xVarianceChanged(arg); 128 } 129 } 130 setYVariance(qreal arg)131void setYVariance(qreal arg) 132 { 133 if (m_yVariance != arg) { 134 m_yVariance = arg; 135 Q_EMIT yVarianceChanged(arg); 136 } 137 } 138 setPace(qreal arg)139void setPace(qreal arg) 140 { 141 if (m_pace != arg) { 142 m_pace = arg; 143 Q_EMIT paceChanged(arg); 144 } 145 } 146 147 setAffectedParameter(AffectableParameters arg)148void setAffectedParameter(AffectableParameters arg) 149 { 150 if (m_affectedParameter != arg) { 151 m_affectedParameter = arg; 152 Q_EMIT affectedParameterChanged(arg); 153 } 154 } 155 156 private: 157 WanderData* getData(int idx); 158 QHash<int, WanderData*> m_wanderData; 159 qreal m_xVariance; 160 qreal m_yVariance; 161 qreal m_pace; 162 AffectableParameters m_affectedParameter; 163 }; 164 165 QT_END_NAMESPACE 166 #endif // WANDERAFFECTOR_H 167