qquick3dparticleaffector.cpp

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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
 
#include "qquick3dparticleaffector_p.h"
#include "qquick3dparticleutils_p.h"
 
QT_BEGIN_NAMESPACE
 
QQuick3DParticleAffector::QQuick3DParticleAffector(QQuick3DNode *parent)
    : QQuick3DNode(parent)
{
}
 
QQuick3DParticleAffector::~QQuick3DParticleAffector()
{
    for (const auto &connection : std::as_const(m_connections))
        QObject::disconnect(connection);
    if (m_system)
        m_system->unRegisterParticleAffector(this);
}
 
QQuick3DParticleSystem *QQuick3DParticleAffector::system() const
{
    return m_system;
}
 
void QQuick3DParticleAffector::setSystem(QQuick3DParticleSystem *system)
{
    if (m_system == system)
        return;
 
    if (m_system)
        m_system->unRegisterParticleAffector(this);
 
    m_system = system;
    if (m_system)
        m_system->registerParticleAffector(this);
 
    m_systemSharedParent = getSharedParentNode(this, m_system);
 
    Q_EMIT systemChanged();
    Q_EMIT update();
}
 
bool QQuick3DParticleAffector::enabled() const
{
    return m_enabled;
}
 
void QQuick3DParticleAffector::setEnabled(bool enabled)
{
    if (m_enabled == enabled)
        return;
 
    m_enabled = enabled;
    Q_EMIT enabledChanged();
    Q_EMIT update();
}
 
void QQuick3DParticleAffector::componentComplete()
{
    if (!m_system && qobject_cast<QQuick3DParticleSystem*>(parent()))
        setSystem(qobject_cast<QQuick3DParticleSystem*>(parent()));
}
 
void QQuick3DParticleAffector::prepareToAffect()
{
}
 
// Particles
 
QQmlListProperty<QQuick3DParticle> QQuick3DParticleAffector::particles()
{
    return {this, this,
             &QQuick3DParticleAffector::appendParticle,
             &QQuick3DParticleAffector::particleCount,
             &QQuick3DParticleAffector::particle,
             &QQuick3DParticleAffector::clearParticles,
             &QQuick3DParticleAffector::replaceParticle,
             &QQuick3DParticleAffector::removeLastParticle};
}
 
void QQuick3DParticleAffector::appendParticle(QQuick3DParticle *n) {
    m_particles.append(n);
    m_connections.insert(n, QObject::connect(n, &QObject::destroyed, [this](QObject *obj) {
        QQuick3DParticle *particle = qobject_cast<QQuick3DParticle *>(obj);
        m_particles.removeAll(particle);
        QObject::disconnect(m_connections[particle]);
        m_connections.remove(particle);
    }));
}
 
qsizetype QQuick3DParticleAffector::particleCount() const
{
    return m_particles.size();
}
 
QQuick3DParticle *QQuick3DParticleAffector::particle(qsizetype index) const
{
    return m_particles.at(index);
}
 
void QQuick3DParticleAffector::clearParticles() {
    m_particles.clear();
}
 
void QQuick3DParticleAffector::replaceParticle(qsizetype index, QQuick3DParticle *n)
{
    QQuick3DParticle *remove = m_particles[index];
    QObject::disconnect(m_connections[remove]);
    m_connections.remove(remove);
    m_particles[index] = n;
    m_connections.insert(n, QObject::connect(n, &QObject::destroyed, [this](QObject *obj) {
        QQuick3DParticle *particle = qobject_cast<QQuick3DParticle *>(obj);
        m_particles.removeAll(particle);
        QObject::disconnect(m_connections[particle]);
        m_connections.remove(particle);
    }));
}
 
void QQuick3DParticleAffector::removeLastParticle()
{
    QQuick3DParticle *last = m_particles.last();
    QObject::disconnect(m_connections[last]);
    m_connections.remove(last);
    m_particles.removeLast();
}
 
// Particles - static
void QQuick3DParticleAffector::appendParticle(QQmlListProperty<QQuick3DParticle> *list, QQuick3DParticle *p) {
    reinterpret_cast<QQuick3DParticleAffector *>(list->data)->appendParticle(p);
}
 
void QQuick3DParticleAffector::clearParticles(QQmlListProperty<QQuick3DParticle> *list) {
    reinterpret_cast<QQuick3DParticleAffector *>(list->data)->clearParticles();
}
 
void QQuick3DParticleAffector::replaceParticle(QQmlListProperty<QQuick3DParticle> *list, qsizetype i, QQuick3DParticle *p)
{
    reinterpret_cast<QQuick3DParticleAffector *>(list->data)->replaceParticle(i, p);
}
 
void QQuick3DParticleAffector::removeLastParticle(QQmlListProperty<QQuick3DParticle> *list)
{
    reinterpret_cast<QQuick3DParticleAffector *>(list->data)->removeLastParticle();
}
 
QQuick3DParticle *QQuick3DParticleAffector::particle(QQmlListProperty<QQuick3DParticle> *list, qsizetype i) {
    return reinterpret_cast<QQuick3DParticleAffector *>(list->data)->particle(i);
}
 
qsizetype QQuick3DParticleAffector::particleCount(QQmlListProperty<QQuick3DParticle> *list) {
    return reinterpret_cast<QQuick3DParticleAffector *>(list->data)->particleCount();
}
 
QT_END_NAMESPACE