Graphics/vtkCurvatures.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkCurvatures.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 __vtkCurvatures_h
#define __vtkCurvatures_h

#include "vtkPolyDataToPolyDataFilter.h"

#define VTK_CURVATURE_GAUSS 0
#define VTK_CURVATURE_MEAN  1

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

  static vtkCurvatures *New();


  vtkSetMacro(CurvatureType,int);
  vtkGetMacro(CurvatureType,int);
  void SetCurvatureTypeToGaussian()
  { this->SetCurvatureType(VTK_CURVATURE_GAUSS); }
  void SetCurvatureTypeToMean()
  { this->SetCurvatureType(VTK_CURVATURE_MEAN); }


  vtkSetMacro(InvertMeanCurvature,int);
  vtkGetMacro(InvertMeanCurvature,int);
  vtkBooleanMacro(InvertMeanCurvature,int);
protected:
  vtkCurvatures();

  // Usual data generation method
  void Execute();

  void GetGaussCurvature();

  // discrete Mean curvature (H) computation,
  // cf http://www-ipg.umds.ac.uk/p.batchelor/curvatures/curvatures.html
  void GetMeanCurvature();

  // Vars
  int CurvatureType;
  int InvertMeanCurvature;

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

};

#endif

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