qquick3dparticlemodelparticle_p.h

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// Copyright (C) 2021 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only

// Qt-Security score:significant reason:default

#ifndef QQUICK3DPARTICLEMODELPARTICLE_H

#define QQUICK3DPARTICLEMODELPARTICLE_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 <QColor>

#include <QVector4D>

#include <QtQuick3D/private/qquick3dnode_p.h>

#include <QtQuick3D/private/qquick3dmodel_p.h>

#include <QtQuick3D/qquick3dinstancing.h>

#include <QtQuick3DParticles/private/qquick3dparticle_p.h>

#include <QtQuick3DParticles/private/qquick3dparticlesystem_p.h>

#include <QtQuick3DParticles/private/qquick3dparticledata_p.h>

#include <QtCore/qpointer.h>

QT_BEGIN_NAMESPACE

class QQmlInstanceModel;

class QQmlChangeSet;

class QQuick3DParticleInstanceTable;

class Q_QUICK3DPARTICLES_EXPORT QQuick3DParticleModelParticle : public QQuick3DParticle

    Q_OBJECT

    Q_PROPERTY(QQmlComponent *delegate READ delegate WRITE setDelegate NOTIFY delegateChanged)

    Q_PROPERTY(QQuick3DInstancing *instanceTable READ instanceTable NOTIFY instanceTableChanged)

    QML_NAMED_ELEMENT(ModelParticle3D)

    Q_CLASSINFO("DefaultProperty", "delegate")

    QML_ADDED_IN_VERSION(6, 2)

public:

    QQuick3DParticleModelParticle(QQuick3DNode *parent = nullptr);

    QQmlComponent *delegate() const;

    QQuick3DInstancing *instanceTable() const;

public Q_SLOTS:

    void setDelegate(QQmlComponent *delegate);

Q_SIGNALS:

    void delegateChanged();

    void instanceTableChanged();

protected:

    void componentComplete() override;

    void itemChange(ItemChange change, const ItemChangeData &value) override;

    void setDepthBias(float bias) override

        QQuick3DParticle::setDepthBias(bias);

        if (m_node)

            updateDepthBias(bias);

private:

    void regenerate();

    void handleMaxAmountChanged(int amount);

    void handleSortModeChanged(QQuick3DParticle::SortMode mode);

    friend class QQuick3DParticleSystem;

    friend class QQuick3DParticleEmitter;

    void clearInstanceTable();

    void addInstance(const QVector3D &position, const QVector3D &scale,

                     const QVector3D &eulerRotation, const QColor &color,

                     float age);

    void commitInstance();

    void updateDepthBias(float bias);

    QPointer<QQmlComponent> m_delegate;

    QPointer<QQuick3DNode> m_node;

    QQuick3DParticleInstanceTable *m_instanceTable = nullptr;

    QVector3D m_initialScale;

};

QT_END_NAMESPACE

#endif // QQUICK3DPARTICLEMODELPARTICLE_H