---

Common/vtkPlanes.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkPlanes.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 __vtkPlanes_h
#define __vtkPlanes_h

#include "vtkImplicitFunction.h"

class vtkPlane;
class vtkPoints;
class vtkDataArray;

class VTK_COMMON_EXPORT vtkPlanes : public vtkImplicitFunction
{
public:
  static vtkPlanes *New();
  vtkTypeRevisionMacro(vtkPlanes,vtkImplicitFunction);
  void PrintSelf(ostream& os, vtkIndent indent);


  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 SetPoints(vtkPoints*);
  vtkGetObjectMacro(Points,vtkPoints);
  

  void SetNormals(vtkDataArray* normals);
  vtkGetObjectMacro(Normals,vtkDataArray);

  void SetFrustumPlanes(float planes[24]);


  void SetBounds(float bounds[6]);
  void SetBounds(float xmin, float xmax, float ymin, float ymax,
                 float zmin, float zmax);

  int GetNumberOfPlanes();
  
  vtkPlane *GetPlane(int i);

protected:
  vtkPlanes();
  ~vtkPlanes();

  vtkPoints *Points;
  vtkDataArray *Normals;
  vtkPlane *Plane;

private:
  float Planes[24];
  float Bounds[6];

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

#endif

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