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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef WANDERAFFECTOR_H
#define WANDERAFFECTOR_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QHash>
#include "qquickparticleaffector_p.h"
QT_BEGIN_NAMESPACE
struct WanderData{
qreal x_vel;
qreal y_vel;
qreal x_peak;
qreal x_var;
qreal y_peak;
qreal y_var;
};
class Q_QUICKPARTICLES_EXPORT QQuickWanderAffector : public QQuickParticleAffector
{
Q_OBJECT
Q_PROPERTY(qreal pace READ pace WRITE setPace NOTIFY paceChanged)
Q_PROPERTY(qreal xVariance READ xVariance WRITE setXVariance NOTIFY xVarianceChanged)
Q_PROPERTY(qreal yVariance READ yVariance WRITE setYVariance NOTIFY yVarianceChanged)
Q_PROPERTY(AffectableParameters affectedParameter READ affectedParameter WRITE setAffectedParameter NOTIFY affectedParameterChanged)
QML_NAMED_ELEMENT(Wander)
QML_ADDED_IN_VERSION(2, 0)
public:
enum AffectableParameters {
Position,
Velocity,
Acceleration
};
Q_ENUM(AffectableParameters)
explicit QQuickWanderAffector(QQuickItem *parent = nullptr);
~QQuickWanderAffector();
// virtual void reset(int systemIdx);
qreal xVariance() const
{
return m_xVariance;
}
qreal yVariance() const
{
return m_yVariance;
}
qreal pace() const
{
return m_pace;
}
AffectableParameters affectedParameter() const
{
return m_affectedParameter;
}
protected:
bool affectParticle(QQuickParticleData *d, qreal dt) override;
Q_SIGNALS:
void xVarianceChanged(qreal arg);
void yVarianceChanged(qreal arg);
void paceChanged(qreal arg);
void affectedParameterChanged(AffectableParameters arg);
public Q_SLOTS:
void setXVariance(qreal arg)
{
if (m_xVariance != arg) {
m_xVariance = arg;
Q_EMIT xVarianceChanged(arg);
}
}
void setYVariance(qreal arg)
{
if (m_yVariance != arg) {
m_yVariance = arg;
Q_EMIT yVarianceChanged(arg);
}
}
void setPace(qreal arg)
{
if (m_pace != arg) {
m_pace = arg;
Q_EMIT paceChanged(arg);
}
}
void setAffectedParameter(AffectableParameters arg)
{
if (m_affectedParameter != arg) {
m_affectedParameter = arg;
Q_EMIT affectedParameterChanged(arg);
}
}
private:
WanderData* getData(int idx);
QHash<int, WanderData*> m_wanderData;
qreal m_xVariance;
qreal m_yVariance;
qreal m_pace;
AffectableParameters m_affectedParameter;
};
QT_END_NAMESPACE
#endif // WANDERAFFECTOR_H