vtkSMPMergePoints.h

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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkSMPMergePoints.h

  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm 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 vtkSMPMergePoints_h
#define vtkSMPMergePoints_h

#include "vtkFiltersSMPModule.h" // For export macro
#include "vtkMergePoints.h"
#include "vtkIdList.h" // For inline functions
#include "vtkAtomicTypes.h" // For the atomic integer used in Merge()

class vtkPointData;

class VTKFILTERSSMP_EXPORT vtkSMPMergePoints : public vtkMergePoints
{
public:
  vtkTypeMacro(vtkSMPMergePoints, vtkMergePoints);
  static vtkSMPMergePoints* New();
  void PrintSelf(ostream &os, vtkIndent indent) override;

  void InitializeMerge();

  void Merge(vtkSMPMergePoints* locator,
             vtkIdType idx,
             vtkPointData *outPd,
             vtkPointData *inPd,
             vtkIdList* idList);

  void FixSizeOfPointArray();

  vtkIdType GetMaxId()
  {
    return this->AtomicInsertionId - 1;
  }


  vtkIdType GetNumberOfIdsInBucket(vtkIdType idx)
  {
    if ( !this->HashTable )
    {
      return 0;
    }
    vtkIdList* bucket = this->HashTable[idx];
    return bucket ? bucket->GetNumberOfIds() : 0;
  }

  vtkIdType GetNumberOfBuckets() override
  {
    return this->NumberOfBuckets;
  }

protected:
  vtkSMPMergePoints();
  ~vtkSMPMergePoints() override;

  vtkAtomicIdType AtomicInsertionId;

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

#endif // vtkSMPMergePoints_h