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Graphics/vtkBandedPolyDataContourFilter.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkBandedPolyDataContourFilter.h,v $
  Language:  C++

  Copyright (c) 1993-2002 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 __vtkBandedPolyDataContourFilter_h
#define __vtkBandedPolyDataContourFilter_h

#include "vtkPolyDataToPolyDataFilter.h"

#include "vtkContourValues.h" // Needed for inline methods

class vtkPoints;
class vtkCellArray;
class vtkPointData;
class vtkDataArray;
class vtkFloatArray;

#define VTK_SCALAR_MODE_INDEX 0
#define VTK_SCALAR_MODE_VALUE 1

class VTK_GRAPHICS_EXPORT vtkBandedPolyDataContourFilter : public vtkPolyDataToPolyDataFilter
{
public:
  vtkTypeRevisionMacro(vtkBandedPolyDataContourFilter,vtkPolyDataToPolyDataFilter);
  void PrintSelf(ostream& os, vtkIndent indent);

  static vtkBandedPolyDataContourFilter *New();


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


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


  vtkSetClampMacro(ScalarMode,int,VTK_SCALAR_MODE_INDEX,VTK_SCALAR_MODE_VALUE);
  vtkGetMacro(ScalarMode,int);
  void SetScalarModeToIndex()
    {this->SetScalarMode(VTK_SCALAR_MODE_INDEX);}
  void SetScalarModeToValue()
    {this->SetScalarMode(VTK_SCALAR_MODE_VALUE);}
  

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

  vtkPolyData *GetContourEdgesOutput();

  unsigned long GetMTime();

protected:
  vtkBandedPolyDataContourFilter();
  ~vtkBandedPolyDataContourFilter();

  void Execute();

  int ComputeScalarIndex(float);
  int IsContourValue(float val);
  int ClipEdge(int v1, int v2, vtkPoints *pts, vtkDataArray *scalars,
               vtkPointData *inPD, vtkPointData *outPD);
  int InsertCell(vtkCellArray *cells, int npts, vtkIdType *pts,
                 int cellId, float s, vtkFloatArray *newS);

  // data members
  vtkContourValues *ContourValues;

  int Clipping;
  int ScalarMode;

  // sorted and cleaned contour values
  float *ClipValues;
  int   NumberOfClipValues;
  int ClipIndex[2]; //indices outside of this range (inclusive) are clipped
  float ClipTolerance; //used to clean up numerical problems
  
  //the second output
  int GenerateContourEdges;

  char *InputScalarsSelection;
  vtkSetStringMacro(InputScalarsSelection);
  
private:
  vtkBandedPolyDataContourFilter(const vtkBandedPolyDataContourFilter&);  // Not implemented.
  void operator=(const vtkBandedPolyDataContourFilter&);  // Not implemented.
};


inline void vtkBandedPolyDataContourFilter::SetValue(int i, float value)
  {this->ContourValues->SetValue(i,value);}


inline float vtkBandedPolyDataContourFilter::GetValue(int i)
  {return this->ContourValues->GetValue(i);}


inline float *vtkBandedPolyDataContourFilter::GetValues()
  {return this->ContourValues->GetValues();}


inline void vtkBandedPolyDataContourFilter::GetValues(float *contourValues)
  {this->ContourValues->GetValues(contourValues);}


inline void vtkBandedPolyDataContourFilter::SetNumberOfContours(int number)
  {this->ContourValues->SetNumberOfContours(number);}


inline int vtkBandedPolyDataContourFilter::GetNumberOfContours()
  {return this->ContourValues->GetNumberOfContours();}


inline void vtkBandedPolyDataContourFilter::GenerateValues(int numContours, 
                                                           float range[2])
  {this->ContourValues->GenerateValues(numContours, range);}


inline void vtkBandedPolyDataContourFilter::GenerateValues(int numContours, 
                                                           float rangeStart, 
                                                           float rangeEnd)
  {this->ContourValues->GenerateValues(numContours, rangeStart, rangeEnd);}


#endif

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