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39
40#ifndef FRICTIONAFFECTOR_H
41#define FRICTIONAFFECTOR_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 "qquickparticleaffector_p.h"
54
55QT_BEGIN_NAMESPACE
56
57class QQuickFrictionAffector : public QQuickParticleAffector
58{
59 Q_OBJECT
60 Q_PROPERTY(qreal factor READ factor WRITE setFactor NOTIFY factorChanged)
61 Q_PROPERTY(qreal threshold READ threshold WRITE setThreshold NOTIFY thresholdChanged)
62 QML_NAMED_ELEMENT(Friction)
63public:
64 explicit QQuickFrictionAffector(QQuickItem *parent = 0);
65
66 qreal factor() const
67 {
68 return m_factor;
69 }
70
71 qreal threshold() const
72 {
73 return m_threshold;
74 }
75
76protected:
77 bool affectParticle(QQuickParticleData *d, qreal dt) override;
78
79Q_SIGNALS:
80
81 void factorChanged(qreal arg);
82 void thresholdChanged(qreal arg);
83
84public Q_SLOTS:
85
86 void setFactor(qreal arg)
87 {
88 if (m_factor != arg) {
89 m_factor = arg;
90 Q_EMIT factorChanged(arg);
91 }
92 }
93
94 void setThreshold(qreal arg)
95 {
96 if (m_threshold != arg) {
97 m_threshold = arg;
98 Q_EMIT thresholdChanged(arg);
99 }
100 }
101
102private:
103 qreal m_factor;
104 qreal m_threshold;
105};
106
107QT_END_NAMESPACE
108#endif // FRICTIONAFFECTOR_H
109

source code of qtdeclarative/src/particles/qquickfriction_p.h