vtkGradientFilter.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkGradientFilter.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.
 
=========================================================================*/
/*----------------------------------------------------------------------------
 Copyright (c) Sandia Corporation
 See Copyright.txt or http://www.paraview.org/HTML/Copyright.html for details.
----------------------------------------------------------------------------*/
 
#ifndef vtkGradientFilter_h
#define vtkGradientFilter_h
 
#include "vtkDataSetAlgorithm.h"
#include "vtkFiltersGeneralModule.h" // For export macro
 
class vtkUnsignedCharArray;
 
class VTKFILTERSGENERAL_EXPORT vtkGradientFilter : public vtkDataSetAlgorithm
{
public:
 
  static vtkGradientFilter* New();
  vtkTypeMacro(vtkGradientFilter, vtkDataSetAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
  enum ContributingCellEnum
  {
    All = 0,   
    Patch = 1, 
    DataSetMax = 2 
  };
 
  enum ReplacementValueEnum
  {
    Zero = 0,        
    NaN = 1,         
    DataTypeMin = 2, 
    DataTypeMax = 3  
  };
 
 
  virtual void SetInputScalars(int fieldAssociation, const char* name);
  virtual void SetInputScalars(int fieldAssociation, int fieldAttributeType);
 
 
  vtkGetStringMacro(ResultArrayName);
  vtkSetStringMacro(ResultArrayName);
 
 
  vtkGetStringMacro(DivergenceArrayName);
  vtkSetStringMacro(DivergenceArrayName);
 
 
  vtkGetStringMacro(VorticityArrayName);
  vtkSetStringMacro(VorticityArrayName);
 
 
  vtkGetStringMacro(QCriterionArrayName);
  vtkSetStringMacro(QCriterionArrayName);
 
 
  vtkGetMacro(FasterApproximation, vtkTypeBool);
  vtkSetMacro(FasterApproximation, vtkTypeBool);
  vtkBooleanMacro(FasterApproximation, vtkTypeBool);
 
 
  vtkSetMacro(ComputeGradient, vtkTypeBool);
  vtkGetMacro(ComputeGradient, vtkTypeBool);
  vtkBooleanMacro(ComputeGradient, vtkTypeBool);
 
 
  vtkSetMacro(ComputeDivergence, vtkTypeBool);
  vtkGetMacro(ComputeDivergence, vtkTypeBool);
  vtkBooleanMacro(ComputeDivergence, vtkTypeBool);
 
 
  vtkSetMacro(ComputeVorticity, vtkTypeBool);
  vtkGetMacro(ComputeVorticity, vtkTypeBool);
  vtkBooleanMacro(ComputeVorticity, vtkTypeBool);
 
 
  vtkSetMacro(ComputeQCriterion, vtkTypeBool);
  vtkGetMacro(ComputeQCriterion, vtkTypeBool);
  vtkBooleanMacro(ComputeQCriterion, vtkTypeBool);
 
 
  vtkSetClampMacro(ContributingCellOption, int, 0, 2);
  vtkGetMacro(ContributingCellOption, int);
 
 
  vtkSetClampMacro(ReplacementValueOption, int, 0, 3);
  vtkGetMacro(ReplacementValueOption, int);
 
protected:
  vtkGradientFilter();
  ~vtkGradientFilter() override;
 
  int RequestUpdateExtent(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
  int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
 
  virtual int ComputeUnstructuredGridGradient(vtkDataArray* Array, int fieldAssociation,
    vtkDataSet* input, bool computeVorticity, bool computeQCriterion, bool computeDivergence,
    vtkDataSet* output);
 
  virtual int ComputeRegularGridGradient(vtkDataArray* Array, int* dims, int fieldAssociation,
    bool computeVorticity, bool computeQCriterion, bool computeDivergence, vtkDataSet* output,
    vtkUnsignedCharArray* ghosts, unsigned char hiddenGhost);
 
  int GetOutputArrayType(vtkDataArray* inputArray);
 
  char* ResultArrayName;
 
  char* DivergenceArrayName;
 
  char* VorticityArrayName;
 
  char* QCriterionArrayName;
 
  vtkTypeBool FasterApproximation;
 
  vtkTypeBool ComputeGradient;
 
  vtkTypeBool ComputeDivergence;
 
  vtkTypeBool ComputeQCriterion;
 
  vtkTypeBool ComputeVorticity;
 
  int ContributingCellOption;
 
  int ReplacementValueOption;
 
private:
  vtkGradientFilter(const vtkGradientFilter&) = delete;
  void operator=(const vtkGradientFilter&) = delete;
};
 
#endif //_vtkGradientFilter_h