vtkCPExodusIIElementBlock.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkCPExodusIIElementBlock_h
#define vtkCPExodusIIElementBlock_h
 
#include "vtkIOExodusModule.h" // For export macro
#include "vtkObject.h"
 
#include "vtkMappedUnstructuredGrid.h" // For mapped unstructured grid wrapper
 
#include <string> // For std::string
 
VTK_ABI_NAMESPACE_BEGIN
class vtkGenericCell;
 
class VTKIOEXODUS_EXPORT vtkCPExodusIIElementBlockImpl : public vtkObject
{
public:
  static vtkCPExodusIIElementBlockImpl* New();
  void PrintSelf(ostream& os, vtkIndent indent) override;
  vtkTypeMacro(vtkCPExodusIIElementBlockImpl, vtkObject);
 
  bool SetExodusConnectivityArray(
    int* elements, const std::string& type, int numElements, int nodesPerElement);
 
  // API for vtkMappedUnstructuredGrid's implementation.
  vtkIdType GetNumberOfCells();
  int GetCellType(vtkIdType cellId);
  void GetCellPoints(vtkIdType cellId, vtkIdList* ptIds);
  void GetFaceStream(vtkIdType cellId, vtkIdList* ptIds);
  void GetPolyhedronFaces(vtkIdType cellId, vtkCellArray* faces);
  void GetPointCells(vtkIdType ptId, vtkIdList* cellIds);
  int GetMaxCellSize();
  void GetIdsOfCellsOfType(int type, vtkIdTypeArray* array);
  int IsHomogeneous();
 
  // This container is read only -- these methods do nothing but print a
  // warning.
  void Allocate(vtkIdType numCells, int extSize = 1000);
  vtkIdType InsertNextCell(int type, vtkIdList* ptIds);
  vtkIdType InsertNextCell(int type, vtkIdType npts, const vtkIdType ptIds[])
    VTK_SIZEHINT(ptIds, npts);
  vtkIdType InsertNextCell(int type, vtkIdType npts, const vtkIdType ptIds[], vtkCellArray* faces)
    VTK_SIZEHINT(ptIds, npts);
 
  void ReplaceCell(vtkIdType cellId, int npts, const vtkIdType pts[]) VTK_SIZEHINT(pts, npts);
 
protected:
  vtkCPExodusIIElementBlockImpl();
  ~vtkCPExodusIIElementBlockImpl() override;
 
private:
  vtkCPExodusIIElementBlockImpl(const vtkCPExodusIIElementBlockImpl&) = delete;
  void operator=(const vtkCPExodusIIElementBlockImpl&) = delete;
 
  // Convert between Exodus node ids and VTK point ids.
  static vtkIdType NodeToPoint(const int& id) { return static_cast<vtkIdType>(id - 1); }
  static int PointToNode(const vtkIdType& id) { return static_cast<int>(id + 1); }
 
  // Convenience methods to get pointers into the element array.
  int* GetElementStart(vtkIdType cellId) const
  {
    return this->Elements + (cellId * this->CellSize);
  }
  int* GetElementEnd(vtkIdType cellId) const
  {
    return this->Elements + (cellId * this->CellSize) + this->CellSize;
  }
  int* GetStart() const { return this->Elements; }
  int* GetEnd() const { return this->Elements + (this->NumberOfCells * this->CellSize); }
 
  int* Elements;
  int CellType;
  int CellSize;
  vtkIdType NumberOfCells;
};
 
vtkMakeExportedMappedUnstructuredGrid(
  vtkCPExodusIIElementBlock, vtkCPExodusIIElementBlockImpl, VTKIOEXODUS_EXPORT);
 
VTK_ABI_NAMESPACE_END
#endif // vtkCPExodusIIElementBlock_h