vtkvmtkNonManifoldSteepestDescent.h

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

Program:   VMTK
Module:    $RCSfile: vtkvmtkNonManifoldSteepestDescent.h,v $
Language:  C++

  Copyright (c) Luca Antiga, David Steinman. All rights reserved.
  See LICENSE file for details.

  Portions of this code are covered under the VTK copyright.
  See VTKCopyright.txt or http://www.kitware.com/VTKCopyright.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 notices for more information.

=========================================================================*/
#ifndef __vtkvmtkNonManifoldSteepestDescent_h
#define __vtkvmtkNonManifoldSteepestDescent_h

#include "vtkPolyDataAlgorithm.h"
#include "vtkDataArray.h"
//#include "vtkvmtkComputationalGeometryWin32Header.h"
#include "vtkvmtkWin32Header.h"

#define VTK_VMTK_DOWNWARD 0
#define VTK_VMTK_UPWARD 1

class VTK_VMTK_COMPUTATIONAL_GEOMETRY_EXPORT vtkvmtkNonManifoldSteepestDescent : public vtkPolyDataAlgorithm
{
  public:
  vtkTypeMacro(vtkvmtkNonManifoldSteepestDescent,vtkPolyDataAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent) VTK_OVERRIDE; 

  static vtkvmtkNonManifoldSteepestDescent *New();


  vtkSetStringMacro(DescentArrayName);
  vtkGetStringMacro(DescentArrayName);

  vtkSetMacro(Direction,int);
  vtkGetMacro(Direction,int);
  void SetDirectionToDownward() 
  {this->SetDirection(VTK_VMTK_DOWNWARD); }
  void SetDirectionToUpward() 
  {this->SetDirection(VTK_VMTK_UPWARD); }

  protected:
  vtkvmtkNonManifoldSteepestDescent();
  ~vtkvmtkNonManifoldSteepestDescent();

  virtual int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *) VTK_OVERRIDE;


  double GetSteepestDescent(vtkPolyData* input, vtkIdType* edge, double s, vtkIdType* steepestDescentEdge, double &steepestDescentS);
  double GetSteepestDescentInCell(vtkPolyData* input, vtkIdType cellId, vtkIdType* edge, double s, vtkIdType* steepestDescentEdge, double &steepestDescentS, double &steepestDescentLength);

  vtkDataArray* DescentArray;
  char* DescentArrayName;

  int NumberOfEdgeSubdivisions;
  int Direction;

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

#endif