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// Copyright (C) 2016 Klaralvdalens Datakonsult AB (KDAB).
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#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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