vtkStaticCellLinksTemplate.h

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

#include "vtkABINamespace.h"

#include <memory> // For shared_ptr
#include <vector> // For vector

VTK_ABI_NAMESPACE_BEGIN
class vtkDataSet;
class vtkPolyData;
class vtkUnstructuredGrid;
class vtkExplicitStructuredGrid;
class vtkCellArray;
VTK_ABI_NAMESPACE_END

#include "vtkAbstractCellLinks.h"

VTK_ABI_NAMESPACE_BEGIN
template <typename TIds>
class vtkStaticCellLinksTemplate
{
public:

  vtkStaticCellLinksTemplate();
  ~vtkStaticCellLinksTemplate();

  void Initialize();

  void BuildLinks(vtkDataSet* ds);

  void BuildLinks(vtkPolyData* pd);

  void BuildLinks(vtkUnstructuredGrid* ugrid);

  void BuildLinks(vtkExplicitStructuredGrid* esgrid);


  void BuildLinksFromMultipleArrays(
    vtkIdType numPts, vtkIdType numCells, std::vector<vtkCellArray*> cellArrays);
  void BuildLinks(vtkIdType numPts, vtkIdType numCells, vtkCellArray* cellArray)
  {
    this->BuildLinksFromMultipleArrays(numPts, numCells, { cellArray });
  }


  TIds GetNumberOfCells(vtkIdType ptId) { return (this->Offsets[ptId + 1] - this->Offsets[ptId]); }
  vtkIdType GetNcells(vtkIdType ptId) VTK_FUTURE_CONST
  {
    return (this->Offsets[ptId + 1] - this->Offsets[ptId]);
  }

  template <typename TNumIds, typename TConnectivityIter>
  bool MatchesCell(TNumIds npts, TConnectivityIter pts);

  TIds* GetCells(vtkIdType ptId) { return (this->Links + this->Offsets[ptId]); }

  void GetCells(vtkIdType npts, const vtkIdType* pts, vtkIdList* cells);

  TIds GetLinksSize() { return this->LinksSize; }

  TIds GetOffset(vtkIdType ptId) { return this->Offsets[ptId]; }


  unsigned long GetActualMemorySize();
  void DeepCopy(vtkStaticCellLinksTemplate* src);
  void ShallowCopy(vtkStaticCellLinksTemplate* src);
  void SelectCells(vtkIdType minMaxDegree[2], unsigned char* cellSelection);

protected:
  // The various templated data members
  TIds LinksSize;
  TIds NumPts;
  TIds NumCells;

  // These point to the core data structures

  std::shared_ptr<TIds> LinkSharedPtr;    // contiguous runs of cell ids
  TIds* Links;                            // Pointer to the links array
  std::shared_ptr<TIds> OffsetsSharedPtr; // offsets for each point into the links array
  TIds* Offsets;                          // Pointer to the offsets array

  // Support for execution
  int Type;

private:
  vtkStaticCellLinksTemplate(const vtkStaticCellLinksTemplate&) = delete;
  void operator=(const vtkStaticCellLinksTemplate&) = delete;
};

VTK_ABI_NAMESPACE_END
#include "vtkStaticCellLinksTemplate.txx"

#endif
// VTK-HeaderTest-Exclude: vtkStaticCellLinksTemplate.h