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

Program:   VMTK
Module:    $RCSfile: vtkvmtkSteepestDescentShooter.h,v $
Language:  C++
Date:      $Date: 2006/04/06 16:46:43 $
Version:   $Revision: 1.4 $

  Copyright (c) Luca Antiga, David Steinman. All rights reserved.
  See LICENCE 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.

=========================================================================*/
  // .NAME vtkvmtkSteepestDescentShooter - Shoot Voronoi vertices onto centerlines.
  // .SECTION Description
  // ...


#ifndef __vtkvmtkSteepestDescentShooter_h
#define __vtkvmtkSteepestDescentShooter_h

#include "vtkvmtkNonManifoldSteepestDescent.h"
#include "vtkPolyData.h"
#include "vtkEdgeTable.h"
#include "vtkIntArray.h"
#include "vtkDoubleArray.h"
#include "vtkIdList.h"
//#include "vtkvmtkComputationalGeometryWin32Header.h"
#include "vtkvmtkWin32Header.h"

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

  static vtkvmtkSteepestDescentShooter *New();

  vtkSetObjectMacro(Target,vtkPolyData);
  vtkGetObjectMacro(Target,vtkPolyData);

  vtkSetObjectMacro(Seeds,vtkIdList);
  vtkGetObjectMacro(Seeds,vtkIdList);

  vtkSetStringMacro(EdgeArrayName);
  vtkGetStringMacro(EdgeArrayName);

  vtkSetStringMacro(TargetVectorsArrayName);
  vtkGetStringMacro(TargetVectorsArrayName);

  vtkSetStringMacro(TargetCellIdsArrayName);
  vtkGetStringMacro(TargetCellIdsArrayName);

  vtkSetStringMacro(TargetPCoordsArrayName);
  vtkGetStringMacro(TargetPCoordsArrayName);
 
  protected:
  vtkvmtkSteepestDescentShooter();
  ~vtkvmtkSteepestDescentShooter();  

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

  void Backtrace(vtkPolyData* input, vtkIdType seedId);

  void FindNearestPolyLinePoint(double* currentPoint, double* lineClosestPoint, int &lineCellId, int &lineCellSubId, double &linePCoord);

  vtkPolyData* Target;
  vtkIdList* Seeds;

  vtkIntArray* TargetArray;
  vtkDataArray* EdgeArray;

  vtkDoubleArray* TargetVectors;
  vtkIntArray* TargetCellIds;
  vtkDoubleArray* TargetPCoords;

  char* EdgeArrayName;

  char* TargetVectorsArrayName;
  char* TargetCellIdsArrayName;
  char* TargetPCoordsArrayName;

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

#endif
