vtkGenericContourFilter.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkGenericContourFilter.h,v $

  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 "vtkPolyDataAlgorithm.h"

class vtkContourValues;
class vtkPointLocator;
class vtkPointData;
class vtkCellData;

class VTK_GENERIC_FILTERING_EXPORT vtkGenericContourFilter : public vtkPolyDataAlgorithm
{
public:
  vtkTypeRevisionMacro(vtkGenericContourFilter,
                       vtkPolyDataAlgorithm);
  
  void PrintSelf(ostream& os, vtkIndent indent);

  static vtkGenericContourFilter *New();
  
  //BTX
  typedef double PointType[3];  // Arbitrary definition of a point
  //ETX
  

  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);

  unsigned long GetMTime();


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


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


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


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

  void CreateDefaultLocator();


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

protected:
  vtkGenericContourFilter();
  ~vtkGenericContourFilter();

  int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
  
  int FillInputPortInformation(int, vtkInformation*);
  
  vtkContourValues *ContourValues;
  int ComputeNormals;
  int ComputeGradients;
  int ComputeScalars;
  vtkPointLocator *Locator;
  
  char *InputScalarsSelection;
  vtkSetStringMacro(InputScalarsSelection);
  
  // Used internal by vtkGenericAdaptorCell::Contour()
  vtkPointData *internalPD;
  vtkPointData *secondaryPD;
  vtkCellData *secondaryCD;
  
private:
  vtkGenericContourFilter(const vtkGenericContourFilter&);  // Not implemented.
  void operator=(const vtkGenericContourFilter&);  // Not implemented.
};
#endif

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