vtkMultiObjectMassProperties.h

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

  Program:   Visualization Toolkit
  Module:    vtkMultiObjectMassProperties.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 vtkMultiObjectMassProperties_h
#define vtkMultiObjectMassProperties_h

#include "vtkFiltersCoreModule.h" // For export macro
#include "vtkPolyDataAlgorithm.h"

class vtkDoubleArray;
class vtkUnsignedCharArray;
class vtkIdTypeArray;

class VTKFILTERSCORE_EXPORT vtkMultiObjectMassProperties : public vtkPolyDataAlgorithm
{
public:

  static vtkMultiObjectMassProperties *New();
  vtkTypeMacro(vtkMultiObjectMassProperties,vtkPolyDataAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent) override;


  vtkSetMacro(SkipValidityCheck,vtkTypeBool);
  vtkGetMacro(SkipValidityCheck,vtkTypeBool);
  vtkBooleanMacro(SkipValidityCheck,vtkTypeBool);

  vtkIdType GetNumberOfObjects()
    {return this->NumberOfObjects;}

  vtkTypeBool GetAllValid()
    {return this->AllValid;}

  double GetTotalVolume()
    {return this->TotalVolume;}

  double GetTotalArea()
    {return this->TotalArea;}

protected:
  vtkMultiObjectMassProperties();
  ~vtkMultiObjectMassProperties() override;

  int RequestData(vtkInformation* request,
                  vtkInformationVector** inputVector,
                  vtkInformationVector* outputVector) override;

  // Data members supporting API
  vtkTypeBool SkipValidityCheck;
  vtkTypeBool AllValid;
  double  TotalVolume;
  double  TotalArea;

  // Internal data members supporting algorithm execution
  vtkIdType NumberOfObjects; //number of objects identified
  vtkIdTypeArray *ObjectIds; //for each input polygon, the object id that the polygon is in

  vtkUnsignedCharArray *ObjectValidity; //is it a valid object?
  vtkDoubleArray *ObjectVolumes; //what is the object volume (if valid)?
  vtkDoubleArray *ObjectAreas; //what is the total object area?

  vtkIdList *CellNeighbors; //avoid repetitive new/delete
  vtkIdList *Wave; //processing wave
  vtkIdList *Wave2;

  // Connected traversal to identify objects
  void TraverseAndMark (vtkPolyData *output, vtkIdType *objectIds,
                        vtkDataArray *valid, unsigned char *orient);

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

#endif