vtkStridedImplicitBackend.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkStridedImplicitBackend_h
#define vtkStridedImplicitBackend_h

 
#include "vtkCommonCoreModule.h"
 
#include "vtkType.h"
 
VTK_ABI_NAMESPACE_BEGIN
class vtkIdList;
template <typename ValueType>
class VTKCOMMONCORE_EXPORT vtkStridedImplicitBackend final
{
public:

  vtkStridedImplicitBackend(
    const ValueType* buffer, vtkIdType stride, int components, vtkIdType offset);
  vtkStridedImplicitBackend(const ValueType* buffer, vtkIdType stride, int components);
  vtkStridedImplicitBackend(const ValueType* buffer, vtkIdType stride);
  ~vtkStridedImplicitBackend();

  ValueType operator()(vtkIdType idx) const;

  void mapTuple(vtkIdType tupleIdx, ValueType* tuple) const;

  ValueType mapComponent(vtkIdType tupleIdx, int compIdx) const;

  const ValueType* GetBuffer() const { return this->Buffer; }

  vtkIdType GetStride() const { return this->Stride; }

  vtkIdType GetOffset() const { return this->Offset; }
 
private:
  const ValueType* Buffer = nullptr;
  vtkIdType Stride = 1;
  vtkIdType Offset = 0;
  int NumberOfComponents = 1;
};
VTK_ABI_NAMESPACE_END
 
#endif // vtkStridedImplicitBackend_h
 
#if defined(VTK_STRIDED_BACKEND_INSTANTIATING)
 
#define VTK_INSTANTIATE_STRIDED_BACKEND(ValueType)                                                 \
  VTK_ABI_NAMESPACE_BEGIN                                                                          \
  template class VTKCOMMONCORE_EXPORT vtkStridedImplicitBackend<ValueType>;                        \
  VTK_ABI_NAMESPACE_END
 
#elif defined(VTK_USE_EXTERN_TEMPLATE)
 
#ifndef VTK_STRIDED_BACKEND_TEMPLATE_EXTERN
#define VTK_STRIDED_BACKEND_TEMPLATE_EXTERN
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable : 4910) // extern and dllexport incompatible
#endif
VTK_ABI_NAMESPACE_BEGIN
vtkExternTemplateMacro(extern template class VTKCOMMONCORE_EXPORT vtkStridedImplicitBackend);
VTK_ABI_NAMESPACE_END
#ifdef _MSC_VER
#pragma warning(pop)
#endif
#endif // VTK_STRIDED_IMPLICIT_BACKEND_TEMPLATE_EXTERN
 
#endif