vtkWindowToImageFilter.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkWindowToImageFilter.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 vtkWindowToImageFilter_h
#define vtkWindowToImageFilter_h
 
#include "vtkRenderingCoreModule.h" // For export macro
#include "vtkAlgorithm.h"
#include "vtkImageData.h" // makes things a bit easier
 
// VTK_RGB and VTK_RGBA are defined in system includes
#define VTK_ZBUFFER 5
 
class vtkWindow;
 
class vtkWTI2DHelperClass;
class VTKRENDERINGCORE_EXPORT vtkWindowToImageFilter : public vtkAlgorithm
{
public:
  static vtkWindowToImageFilter *New();
 
  vtkTypeMacro(vtkWindowToImageFilter,vtkAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent);
 
  void SetInput(vtkWindow *input);
 
 
  vtkGetObjectMacro(Input,vtkWindow);
 
 
  vtkSetClampMacro(Magnification,int,1,2048);
  vtkGetMacro(Magnification,int);
 
 
  vtkSetMacro(FixBoundary, bool);
  vtkGetMacro(FixBoundary, bool);
  vtkBooleanMacro(FixBoundary, bool);
 
 
  vtkBooleanMacro(ReadFrontBuffer, int);
  vtkGetMacro(ReadFrontBuffer, int);
  vtkSetMacro(ReadFrontBuffer, int);
 
 
  vtkBooleanMacro(ShouldRerender, int);
  vtkSetMacro(ShouldRerender, int);
  vtkGetMacro(ShouldRerender, int);
 
 
  vtkSetVector4Macro(Viewport,double);
  vtkGetVectorMacro(Viewport,double,4);
 
 
  vtkSetMacro(InputBufferType, int);
  vtkGetMacro(InputBufferType, int);
  void SetInputBufferTypeToRGB() {this->SetInputBufferType(VTK_RGB);};
  void SetInputBufferTypeToRGBA() {this->SetInputBufferType(VTK_RGBA);};
  void SetInputBufferTypeToZBuffer() {this->SetInputBufferType(VTK_ZBUFFER);};
 
 
  vtkImageData* GetOutput();
 
 
  virtual int ProcessRequest(vtkInformation*,
                             vtkInformationVector**,
                             vtkInformationVector*);
 
protected:
  vtkWindowToImageFilter();
  ~vtkWindowToImageFilter();
 
  // vtkWindow is not a vtkDataObject, so we need our own ivar.
  vtkWindow *Input;
  int Magnification;
  int ReadFrontBuffer;
  int ShouldRerender;
  double Viewport[4];
  int InputBufferType;
  bool FixBoundary;
 
  void RequestData(vtkInformation *,
                   vtkInformationVector **, vtkInformationVector *);
 
  virtual void RequestInformation (vtkInformation*,
                                  vtkInformationVector**,
                                  vtkInformationVector*);
 
  // see algorithm for more info
  virtual int FillOutputPortInformation(int port, vtkInformation* info);
 
  // The following was extracted from vtkRenderLargeImage, and patch to handle viewports
  void Rescale2DActors();
  void Shift2DActors(int x, int y);
  void Restore2DActors();
  vtkWTI2DHelperClass *StoredData;
 
private:
  vtkWindowToImageFilter(const vtkWindowToImageFilter&);  // Not implemented.
  void operator=(const vtkWindowToImageFilter&);  // Not implemented.
};
 
#endif