---

Rendering/vtkCellPicker.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkCellPicker.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 __vtkCellPicker_h
#define __vtkCellPicker_h

#include "vtkPicker.h"

class vtkGenericCell;

class VTK_RENDERING_EXPORT vtkCellPicker : public vtkPicker
{
public:
  static vtkCellPicker *New();
  vtkTypeRevisionMacro(vtkCellPicker,vtkPicker);
  void PrintSelf(ostream& os, vtkIndent indent);


  vtkGetMacro(CellId, vtkIdType);


  vtkGetMacro(SubId, int);


  vtkGetVectorMacro(PCoords, float,3);

protected:
  vtkCellPicker();
  ~vtkCellPicker();

  vtkIdType CellId; // picked cell
  int SubId; // picked cell subId
  float PCoords[3]; // picked cell parametric coordinates

  virtual float IntersectWithLine(float p1[3], float p2[3], float tol, 
                                  vtkAssemblyPath *path, vtkProp3D *p, 
                                  vtkAbstractMapper3D *m);
  void Initialize();
  
private:
  vtkGenericCell *Cell; //used to accelerate picking
  
private:
  vtkCellPicker(const vtkCellPicker&);  // Not implemented.
  void operator=(const vtkCellPicker&);  // Not implemented.
};

#endif

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