---

Graphics/vtkContourGrid.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkContourGrid.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 __vtkContourGrid_h
#define __vtkContourGrid_h

#include "vtkUnstructuredGridToPolyDataFilter.h"

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

class vtkEdgeTable;
class vtkPointLocator;
class vtkScalarTree;

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

  static vtkContourGrid *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);

  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);


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


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

  void CreateDefaultLocator();

protected:
  vtkContourGrid();
  ~vtkContourGrid();

//BTX

  // This is temporary solution. The vtkContourFilter must be able
  // to call SelectInputScalars().
  friend class vtkContourFilter;


  vtkGetStringMacro(InputScalarsSelection);
  void SelectInputScalars(const char *fieldName) 
    {this->SetInputScalarsSelection(fieldName);}

//ETX
  
  void Execute();

  vtkContourValues *ContourValues;
  int ComputeNormals;
  int ComputeGradients;
  int ComputeScalars;
  vtkPointLocator *Locator;
  int UseScalarTree;
  vtkScalarTree *ScalarTree;
  vtkEdgeTable *EdgeTable;
  
  char *InputScalarsSelection;
  vtkSetStringMacro(InputScalarsSelection);

private:
  vtkContourGrid(const vtkContourGrid&);  // Not implemented.
  void operator=(const vtkContourGrid&);  // Not implemented.
};

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


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


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

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

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


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


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


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


#endif

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