qquick3dparticletrailemitter_p.h

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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
 
#ifndef QQUICK3DPARTICLETRAILEMITTER_H
#define QQUICK3DPARTICLETRAILEMITTER_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 <QtQuick3DParticles/private/qquick3dparticleemitter_p.h>
#include <QtQuick3DParticles/private/qquick3dparticle_p.h>
#include <QtQuick3DParticles/private/qquick3dparticledata_p.h>
#include <QQmlEngine>
#include <QList>
 
QT_BEGIN_NAMESPACE
 
class Q_QUICK3DPARTICLES_EXPORT QQuick3DParticleTrailEmitter : public QQuick3DParticleEmitter
{
    Q_OBJECT
    Q_PROPERTY(QQuick3DParticle *follow READ follow WRITE setFollow NOTIFY followChanged)
    QML_NAMED_ELEMENT(TrailEmitter3D)
    QML_ADDED_IN_VERSION(6, 2)
 
public:
    QQuick3DParticleTrailEmitter(QQuick3DNode *parent = nullptr);
 
    QQuick3DParticle *follow() const;
 
    Q_INVOKABLE void burst(int count) override;
 
public Q_SLOTS:
    void setFollow(QQuick3DParticle *follow);
 
Q_SIGNALS:
    void followChanged();
 
protected:
    friend class QQuick3DParticleSystem;
    void emitTrailParticles(const QVector3D &centerPos, int emitAmount, int triggerType, const QVector3D &normal, const QVector3D &velocity);
    bool hasBursts() const;
    void clearBursts();
 
private:
    QQuick3DParticle *m_follow = nullptr;
    QList<QQuick3DParticleEmitBurstData> m_bursts;
 
};
 
QT_END_NAMESPACE
 
#endif // QQUICK3DPARTICLETRAILEMITTER_H