---

Filtering/vtkImplicitSelectionLoop.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkImplicitSelectionLoop.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 __vtkImplicitSelectionLoop_h
#define __vtkImplicitSelectionLoop_h

#include "vtkImplicitFunction.h"

class vtkPoints;
class vtkPolygon;

class VTK_FILTERING_EXPORT vtkImplicitSelectionLoop : public vtkImplicitFunction
{
public:
  vtkTypeRevisionMacro(vtkImplicitSelectionLoop,vtkImplicitFunction);
  void PrintSelf(ostream& os, vtkIndent indent);

  static vtkImplicitSelectionLoop *New();


  float EvaluateFunction(float x[3]);
  float EvaluateFunction(float x, float y, float z)
    {return this->vtkImplicitFunction::EvaluateFunction(x, y, z); } ;

  void EvaluateGradient(float x[3], float n[3]);


  virtual void SetLoop(vtkPoints*);
  vtkGetObjectMacro(Loop,vtkPoints);


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


  vtkSetVector3Macro(Normal,float);
  vtkGetVectorMacro(Normal,float,3);

  unsigned long GetMTime();

protected:
  vtkImplicitSelectionLoop();
  ~vtkImplicitSelectionLoop();

  vtkPoints *Loop;
  float Normal[3];
  int AutomaticNormalGeneration;

private:
  void Initialize();
  vtkPolygon *Polygon;

  float Origin[3];
  float Bounds[6];
  float DeltaX;
  float DeltaY;
  float DeltaZ;

  vtkTimeStamp InitializationTime;

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

#endif

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