vtkGenericContourFilter.h

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

  Program:   Visualization Toolkit
  Module:    vtkGenericContourFilter.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 vtkGenericContourFilter_h
#define vtkGenericContourFilter_h

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

class vtkContourValues;
class vtkIncrementalPointLocator;
class vtkPointData;
class vtkCellData;

class VTKFILTERSGENERIC_EXPORT vtkGenericContourFilter : public vtkPolyDataAlgorithm
{
public:
  vtkTypeMacro(vtkGenericContourFilter,
                       vtkPolyDataAlgorithm);

  void PrintSelf(ostream& os, vtkIndent indent) override;

  static vtkGenericContourFilter *New();

  typedef double PointType[3];  // Arbitrary definition of a point


  void SetValue(int i, float value);
  double GetValue(int i);
  double *GetValues();
  void GetValues(double *contourValues);
  void SetNumberOfContours(int number);
  int GetNumberOfContours();
  void GenerateValues(int numContours, double range[2]);
  void GenerateValues(int numContours, double rangeStart, double rangeEnd);

  vtkMTimeType GetMTime() override;


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


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


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


  void SetLocator(vtkIncrementalPointLocator *locator);
  vtkGetObjectMacro(Locator,vtkIncrementalPointLocator);

  void CreateDefaultLocator();


  vtkGetStringMacro(InputScalarsSelection);
  virtual void SelectInputScalars(const char *fieldName);

protected:
  vtkGenericContourFilter();
  ~vtkGenericContourFilter() override;

  int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *) override;

  int FillInputPortInformation(int, vtkInformation*) override;

  vtkContourValues *ContourValues;
  vtkTypeBool ComputeNormals;
  vtkTypeBool ComputeGradients;
  vtkTypeBool ComputeScalars;
  vtkIncrementalPointLocator *Locator;

  char *InputScalarsSelection;
  vtkSetStringMacro(InputScalarsSelection);

  // Used internal by vtkGenericAdaptorCell::Contour()
  vtkPointData *InternalPD;
  vtkPointData *SecondaryPD;
  vtkCellData  *SecondaryCD;

private:
  vtkGenericContourFilter(const vtkGenericContourFilter&) = delete;
  void operator=(const vtkGenericContourFilter&) = delete;
};
#endif