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/*=========================================================================
Program: Visualization Toolkit
Module: vtkPolyDataStreamer.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.
=========================================================================*/
// .NAME vtkPolyDataStreamer - Stream appends input pieces to the output.
// .SECTION Description
// vtkPolyDataStreamer initiates streaming by requesting pieces from its
// single input it appends these pieces it to the requested output.
// Note that since vtkPolyDataStreamer uses an append filter, all the
// polygons generated have to be kept in memory before rendering. If
// these do not fit in the memory, it is possible to make the vtkPolyDataMapper
// stream. Since the mapper will render each piece separately, all the
// polygons do not have to stored in memory.
// .SECTION Note
// The output may be slightly different if the pipeline does not handle
// ghost cells properly (i.e. you might see seames between the pieces).
// .SECTION See Also
// vtkAppendFilter
#ifndef __vtkPolyDataStreamer_h
#define __vtkPolyDataStreamer_h
#include "vtkPolyDataAlgorithm.h"
class VTK_GRAPHICS_EXPORT vtkPolyDataStreamer : public vtkPolyDataAlgorithm
{
public:
static vtkPolyDataStreamer *New();
vtkTypeMacro(vtkPolyDataStreamer,vtkPolyDataAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Set the number of pieces to divide the problem into.
void SetNumberOfStreamDivisions(int num);
vtkGetMacro(NumberOfStreamDivisions,int);
// Description:
// By default, this option is off. When it is on, cell scalars are generated
// based on which piece they are in.
vtkSetMacro(ColorByPiece, int);
vtkGetMacro(ColorByPiece, int);
vtkBooleanMacro(ColorByPiece, int);
protected:
vtkPolyDataStreamer();
~vtkPolyDataStreamer();
// Append the pieces.
int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
int RequestUpdateExtent(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
int NumberOfStreamDivisions;
int ColorByPiece;
private:
vtkPolyDataStreamer(const vtkPolyDataStreamer&); // Not implemented.
void operator=(const vtkPolyDataStreamer&); // Not implemented.
};
#endif
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