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/****************************************************************************
**
** Copyright (C) 2016 Klaralvdalens Datakonsult AB (KDAB).
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** 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 https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef GEOMETRYTESTHELPER_H
#define GEOMETRYTESTHELPER_H
#include <Qt3DCore/qattribute.h>
#include <Qt3DCore/qbuffer.h>
#include <Qt3DCore/qgeometry.h>
template<typename IndexType>
IndexType extractIndexData(Qt3DCore::QAttribute *attribute, int index)
{
// Get the raw data
const IndexType *typedData = reinterpret_cast<const IndexType *>(attribute->buffer()->data().constData());
// Offset into the data taking stride and offset into account
const IndexType indexValue = *(typedData + index);
return indexValue;
}
template<typename VertexType, typename IndexType>
VertexType extractVertexData(Qt3DCore::QAttribute *attribute, IndexType index)
{
// Get the raw data
const char *rawData = attribute->buffer()->data().constData();
// Offset into the data taking stride and offset into account
const char *vertexData = rawData + (index * attribute->byteStride() + attribute->byteOffset());
// Construct vertex from the typed data
VertexType vertex;
const Qt3DCore::QAttribute::VertexBaseType type = attribute->vertexBaseType();
switch (type)
{
case Qt3DCore::QAttribute::Float: {
const float *typedVertexData = reinterpret_cast<const float *>(vertexData);
const int components = attribute->vertexSize();
for (int i = 0; i < components; ++i)
vertex[i] = typedVertexData[i];
break;
// TODO: Handle other types as needed
}
default:
qWarning() << "Unhandled type";
Q_UNREACHABLE();
break;
}
return vertex;
}
#endif // GEOMETRYTESTHELPER_H
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