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/****************************************************************************
**
** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL3$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPLv3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or later as published by the Free
** Software Foundation and appearing in the file LICENSE.GPL included in
** the packaging of this file. Please review the following information to
** ensure the GNU General Public License version 2.0 requirements will be
** met: http://www.gnu.org/licenses/gpl-2.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <qt3dquickwindow.h>
#include <Qt3DRender/QSceneLoader>
#include <Qt3DCore/QEntity>
#include <QGuiApplication>
#include <qqml.h>
class SceneHelper : public QObject
{
Q_OBJECT
public:
Q_INVOKABLE QObject *findEntity(Qt3DRender::QSceneLoader *loader, const QString &name);
Q_INVOKABLE QObject *findComponent(Qt3DCore::QEntity *entity, const QString &componentMetatype);
Q_INVOKABLE void addListEntry(const QVariant &list, QObject *entry);
};
QObject *SceneHelper::findEntity(Qt3DRender::QSceneLoader *loader, const QString &name)
{
// The QSceneLoader instance is a component of an entity. The loaded scene
// tree is added under this entity.
QVector<Qt3DCore::QEntity *> entities = loader->entities();
if (entities.isEmpty())
return 0;
// Technically there could be multiple entities referencing the scene loader
// but sharing is discouraged, and in our case there will be one anyhow.
Qt3DCore::QEntity *root = entities[0];
// The scene structure and names always depend on the asset.
return root->findChild<Qt3DCore::QEntity *>(name);
}
QObject *SceneHelper::findComponent(Qt3DCore::QEntity *entity, const QString &componentMetatype)
{
Q_ASSERT(entity);
Qt3DCore::QComponentList components = entity->components();
Q_FOREACH (Qt3DCore::QComponent *component, components) {
qDebug() << component->metaObject()->className();
if (component->metaObject()->className() == componentMetatype) {
return component;
}
}
return Q_NULLPTR;
}
void SceneHelper::addListEntry(const QVariant &list, QObject *entry)
{
QQmlListReference ref = list.value<QQmlListReference>();
ref.append(entry);
}
int main(int argc, char* argv[])
{
QGuiApplication app(argc, argv);
Qt3DQuickWindow view;
qmlRegisterType<SceneHelper>("Qt3D.Examples", 2, 0, "SceneHelper");
view.setSource(QUrl("qrc:/main.qml"));
view.show();
return app.exec();
}
#include "main.moc"
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