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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
/**
* @class vtkPolyDataStreamer
* @brief Streamer appends input pieces to the output.
*
* vtkPolyDataStreamer initiates streaming by requesting pieces from its
* single input it appends these pieces 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.
* @attention
* The output may be slightly different if the pipeline does not handle
* ghost cells properly (i.e. you might see seames between the pieces).
* @sa
* vtkAppendFilter
*/
#ifndef vtkPolyDataStreamer_h
#define vtkPolyDataStreamer_h
#include "vtkFiltersGeneralModule.h" // For export macro
#include "vtkStreamerBase.h"
VTK_ABI_NAMESPACE_BEGIN
class vtkAppendPolyData;
class VTKFILTERSGENERAL_EXPORT vtkPolyDataStreamer : public vtkStreamerBase
{
public:
static vtkPolyDataStreamer* New();
vtkTypeMacro(vtkPolyDataStreamer, vtkStreamerBase);
void PrintSelf(ostream& os, vtkIndent indent) override;
///@{
/**
* Set the number of pieces to divide the problem into.
*/
void SetNumberOfStreamDivisions(int num);
int GetNumberOfStreamDivisions() { return this->NumberOfPasses; }
///@}
///@{
/**
* By default, this option is off. When it is on, cell scalars are generated
* based on which piece they are in.
*/
vtkSetMacro(ColorByPiece, vtkTypeBool);
vtkGetMacro(ColorByPiece, vtkTypeBool);
vtkBooleanMacro(ColorByPiece, vtkTypeBool);
///@}
protected:
vtkPolyDataStreamer();
~vtkPolyDataStreamer() override;
// see algorithm for more info
int FillOutputPortInformation(int port, vtkInformation* info) override;
int FillInputPortInformation(int port, vtkInformation* info) override;
int RequestUpdateExtent(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
int ExecutePass(vtkInformationVector** inputVector, vtkInformationVector* outputVector) override;
int PostExecute(vtkInformationVector** inputVector, vtkInformationVector* outputVector) override;
vtkTypeBool ColorByPiece;
private:
vtkPolyDataStreamer(const vtkPolyDataStreamer&) = delete;
void operator=(const vtkPolyDataStreamer&) = delete;
vtkAppendPolyData* Append;
};
VTK_ABI_NAMESPACE_END
#endif
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