vtk-m/vtkm/BaseComponent.h
2019-04-17 10:57:13 -06:00

65 lines
1.7 KiB
C++

//============================================================================
// Copyright (c) Kitware, Inc.
// All rights reserved.
// See LICENSE.txt for details.
//
// This software is distributed WITHOUT ANY WARRANTY; without even
// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
// PURPOSE. See the above copyright notice for more information.
//============================================================================
#ifndef vtk_m_BaseComponent_h
#define vtk_m_BaseComponent_h
#include <vtkm/Matrix.h>
#include <vtkm/TypeTraits.h>
#include <vtkm/VecTraits.h>
namespace vtkm
{
namespace detail
{
template <typename VecType, typename DimensionalityTag>
struct BaseComponentImpl;
template <typename VecType>
struct BaseComponentImpl<VecType, vtkm::TypeTraitsVectorTag>
{
private:
using ComponentType = typename vtkm::VecTraits<VecType>::ComponentType;
public:
using Type =
typename BaseComponentImpl<ComponentType,
typename vtkm::TypeTraits<ComponentType>::DimensionalityTag>::Type;
};
template <typename VecType>
struct BaseComponentImpl<VecType, vtkm::TypeTraitsMatrixTag>
: BaseComponentImpl<VecType, vtkm::TypeTraitsVectorTag>
{
};
template <typename ScalarType>
struct BaseComponentImpl<ScalarType, vtkm::TypeTraitsScalarTag>
{
using Type = ScalarType;
};
} // namespace detail
// Finds the base component type of a Vec. If you have a Vec of Vecs, it will
// descend all Vecs until you get to the scalar type.
template <typename VecType>
struct BaseComponent
{
using Type =
typename detail::BaseComponentImpl<VecType,
typename vtkm::TypeTraits<VecType>::DimensionalityTag>::Type;
};
} // namespace vtkm
#endif //vtk_m_BaseComponent_h