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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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 Digia. For licensing terms and
+** conditions see http://qt.digia.com/licensing. For further information
+** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights. These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 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 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "updateworldtransformjob.h"
+
+#include <renderer.h>
+#include <rendernode.h>
+#include <sphere.h>
+
+#include <QDebug>
+#include <QThread>
+
+static void updateWorldTransformAndBounds(Qt3D::Render::RenderNode *node)
+{
+ QMatrix4x4 parentTransform;
+ if (node->m_parent)
+ parentTransform = *(node->m_parent->m_worldTransform);
+
+ *(node->m_worldTransform) = parentTransform * *(node->m_localTransform);
+ *(node->m_worldBoundingVolume) = node->m_localBoundingVolume->transformed(*(node->m_worldTransform));
+
+ Q_FOREACH (Qt3D::Render::RenderNode *child, node->m_children)
+ updateWorldTransformAndBounds(child);
+}
+
+namespace Qt3D {
+namespace Render {
+
+UpdateWorldTransformJob::UpdateWorldTransformJob(RenderNode *node)
+ : Qt3D::QJob()
+ , m_node(node)
+{
+}
+
+void UpdateWorldTransformJob::run()
+{
+ // Iterate over each level of hierarchy in our scene
+ // and update each node's world transform from its
+ // local transform and its parent's world transform
+
+ // TODO: Parallelise this on each level using a parallel_for
+ // implementation.
+
+ qDebug() << "Entering" << Q_FUNC_INFO << QThread::currentThread();
+ updateWorldTransformAndBounds(m_node);
+ qDebug() << "Exiting" << Q_FUNC_INFO << QThread::currentThread();
+}
+
+} // namespace Render
+} // namespace Qt3D