vtkFollower.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkFollower.h,v $

  Copyright (c) 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 __vtkFollower_h
#define __vtkFollower_h

#include "vtkActor.h"

class vtkCamera;

class VTK_RENDERING_EXPORT vtkFollower : public vtkActor
{
 public:
  vtkTypeRevisionMacro(vtkFollower,vtkActor);
  void PrintSelf(ostream& os, vtkIndent indent);

  static vtkFollower *New();


  virtual void SetCamera(vtkCamera*);
  vtkGetObjectMacro(Camera,vtkCamera);


  virtual int RenderOpaqueGeometry(vtkViewport *viewport);
  virtual int RenderTranslucentGeometry(vtkViewport *viewport);
  virtual void Render(vtkRenderer *ren);
  

  virtual void GetMatrix(vtkMatrix4x4 *m);
  virtual void GetMatrix(double m[16]);
  virtual vtkMatrix4x4* GetMatrix()
    {return this->vtkActor::GetMatrix();}

  void ShallowCopy(vtkProp *prop);

protected:
  vtkFollower();
  ~vtkFollower();

  vtkCamera *Camera; 
  vtkActor  *Device;
private:
  // hide the two parameter Render() method from the user and the compiler.
  virtual void Render(vtkRenderer *, vtkMapper *) {};
private:
  vtkFollower(const vtkFollower&);  // Not implemented.
  void operator=(const vtkFollower&);  // Not implemented.
};

#endif

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