vtkRenderLargeImage.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkRenderLargeImage.h
 
  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 vtkRenderLargeImage_h
#define vtkRenderLargeImage_h
 
#include "vtkFiltersHybridModule.h" // For export macro
#include "vtkAlgorithm.h"
#include "vtkImageData.h" // makes things a bit easier
 
class vtkRenderer;
class vtkActor2DCollection;
class vtkCollection;
class vtkRenderLargeImage2DHelperClass;
 
class VTKFILTERSHYBRID_EXPORT vtkRenderLargeImage : public vtkAlgorithm
{
public:
  static vtkRenderLargeImage *New();
  vtkTypeMacro(vtkRenderLargeImage,vtkAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent);
 
 
  vtkSetMacro(Magnification,int);
  vtkGetMacro(Magnification,int);
 
  virtual void SetInput(vtkRenderer*);
 
 
  vtkGetObjectMacro(Input,vtkRenderer);
 
  vtkImageData* GetOutput();
 
 
  virtual int ProcessRequest(vtkInformation*,
                             vtkInformationVector**,
                             vtkInformationVector*);
 
protected:
  vtkRenderLargeImage();
  ~vtkRenderLargeImage();
 
  int Magnification;
  vtkRenderer *Input;
  void RequestData(vtkInformation *,
                   vtkInformationVector **, vtkInformationVector *);
  void RequestInformation (vtkInformation *,
                           vtkInformationVector **, vtkInformationVector *);
 
  // see algorithm for more info
  virtual int FillOutputPortInformation(int port, vtkInformation* info);
 
  // Adjust the coordinates of all 2D actors to fit new window size
  void Rescale2DActors();
  // Shift each actor according to the tile we are rendering
  void Shift2DActors(int x, int y);
  // put them all back to their previous state when finished.
  void Restore2DActors();
  // 2D Actors need to be rescaled and shifted about for each tile
  // use this helper class to make life easier.
  vtkRenderLargeImage2DHelperClass *StoredData;
 
private:
  vtkRenderLargeImage(const vtkRenderLargeImage&);  // Not implemented.
  void operator=(const vtkRenderLargeImage&);  // Not implemented.
};
 
#endif