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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkImageDataStreamer.h,v $
  Language:  C++
  Date:      $Date: 2001/10/11 13:37:41 $
  Version:   $Revision: 1.21 $

Copyright (c) 1993-2001 Ken Martin, Will Schroeder, Bill Lorensen 
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

 * Redistributions of source code must retain the above copyright notice,
   this list of conditions and the following disclaimer.

 * Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

 * Neither name of Ken Martin, Will Schroeder, or Bill Lorensen nor the names
   of any contributors may be used to endorse or promote products derived
   from this software without specific prior written permission.

 * Modified source versions must be plainly marked as such, and must not be
   misrepresented as being the original software.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

=========================================================================*/
// .NAME vtkImageDataStreamer - Initiates streaming on image data.
// .SECTION Description
// To satisfy a request, this filter calls update on its input
// many times with smaller update extents.  All processing up stream
// streams smaller pieces.

#ifndef __vtkImageDataStreamer_h
#define __vtkImageDataStreamer_h

#include "vtkImageToImageFilter.h"
#include "vtkExtentTranslator.h"

class VTK_IMAGING_EXPORT vtkImageDataStreamer : public vtkImageToImageFilter
{
public:
  static vtkImageDataStreamer *New();
  vtkTypeMacro(vtkImageDataStreamer,vtkImageToImageFilter);
  void PrintSelf(ostream& os, vtkIndent indent);

  // Description:
  // Set how many pieces to divide the input into.
  // void SetNumberOfStreamDivisions(int num);
  // int GetNumberOfStreamDivisions();
  vtkSetMacro(NumberOfStreamDivisions,int);
  vtkGetMacro(NumberOfStreamDivisions,int);
  
  // Description:
  // Need to override since this is where streaming will be done
  void UpdateData( vtkDataObject *out );

  // Description:
  // Get the extent translator that will be used to split the requests
  vtkGetObjectMacro(ExtentTranslator,vtkExtentTranslator);
  vtkSetObjectMacro(ExtentTranslator,vtkExtentTranslator);
  
protected:
  vtkImageDataStreamer();
  ~vtkImageDataStreamer();
  
  vtkExtentTranslator *ExtentTranslator;
  int            NumberOfStreamDivisions;
private:
  vtkImageDataStreamer(const vtkImageDataStreamer&);  // Not implemented.
  void operator=(const vtkImageDataStreamer&);  // Not implemented.
};




#endif



