vtkCompositeImplicitBackend.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
// Funded by CEA, DAM, DIF, F-91297 Arpajon, France
#ifndef vtkCompositeImplicitBackend_h
#define vtkCompositeImplicitBackend_h

#include "vtkCommonCoreModule.h"
#include "vtkCompiler.h" // For VTK_USE_EXTERN_TEMPLATE
#include "vtkType.h"     // For vtkExternTemplateMacro

#include <memory>
#include <vector>

VTK_ABI_NAMESPACE_BEGIN
class vtkDataArray;
class vtkDataArrayCollection;
template <typename ValueType>
class VTKCOMMONCORE_EXPORT vtkCompositeImplicitBackend final
{
public:
  vtkCompositeImplicitBackend(const std::vector<vtkDataArray*>& arrays);
  vtkCompositeImplicitBackend(vtkDataArrayCollection* arrays);
  ~vtkCompositeImplicitBackend();

  ValueType operator()(vtkIdType idx) const;

  unsigned long getMemorySize() const;

  vtkIdType GetNumberOfArrays() const;

  vtkDataArray* GetArray(vtkIdType idx) const;

  vtkIdType GetOffset(vtkIdType idx) const;

protected:
  struct Internals;
  std::unique_ptr<Internals> Internal;
};
VTK_ABI_NAMESPACE_END

#endif // vtkCompositeImplicitBackend_h

#if defined(VTK_COMPOSITE_BACKEND_INSTANTIATING)

#define VTK_INSTANTIATE_COMPOSITE_BACKEND(ValueType)                                               \
  VTK_ABI_NAMESPACE_BEGIN                                                                          \
  template class VTKCOMMONCORE_EXPORT vtkCompositeImplicitBackend<ValueType>;                      \
  VTK_ABI_NAMESPACE_END

#elif defined(VTK_USE_EXTERN_TEMPLATE)

#ifndef VTK_COMPOSITE_BACKEND_TEMPLATE_EXTERN
#define VTK_COMPOSITE_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 vtkCompositeImplicitBackend);
VTK_ABI_NAMESPACE_END
#ifdef _MSC_VER
#pragma warning(pop)
#endif
#endif // VTK_COMPOSITE_IMPLICIT_BACKEND_TEMPLATE_EXTERN

#endif