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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
/**
* @class vtkExtractSubsetWithSeed
* @brief extract a line or plane in the ijk space starting with a seed
*
* vtkExtractSubsetWithSeed is a filter that can extract a line or a plane
* in the i-j-k space starting with a seed point. The filter supports cases
* where the structured grid is split up into multiple blocks (across multiple
* ranks). It also handles cases were the ijk origin for each the blocks is not
* aligned.
*
* The implementation starts with the seed point and then extracts a line
* in the chosen direction. Then, using the face center for the terminal
* faces as the new seeds it continues seeding and extracting until a seed can
* no longer extract a new grid. The same principle holds when extracting a
* plane, except in that case multiple seeds are generated using face centers
* for each face alone the plane edges.
*/
#ifndef vtkExtractSubsetWithSeed_h
#define vtkExtractSubsetWithSeed_h
#include "vtkDataObjectAlgorithm.h"
#include "vtkFiltersParallelDIY2Module.h" // for export macros
VTK_ABI_NAMESPACE_BEGIN
class vtkMultiProcessController;
class VTKFILTERSPARALLELDIY2_EXPORT vtkExtractSubsetWithSeed : public vtkDataObjectAlgorithm
{
public:
static vtkExtractSubsetWithSeed* New();
vtkTypeMacro(vtkExtractSubsetWithSeed, vtkDataObjectAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent) override;
///@{
/**
* Get/Set the extraction seed point. This is specified in world coordinates
* i.e. x-y-z space.
*/
vtkSetVector3Macro(Seed, double);
vtkGetVector3Macro(Seed, double);
///@}
enum
{
LINE_I = 0,
LINE_J,
LINE_K,
PLANE_IJ,
PLANE_JK,
PLANE_KI,
};
///@{
/**
* Get/Set the directions in the ijk spaced to extract starting with the
* seed.
*/
vtkSetClampMacro(Direction, int, LINE_I, PLANE_KI);
vtkGetMacro(Direction, int);
void SetDirectionToLineI() { this->SetDirection(LINE_I); }
void SetDirectionToLineJ() { this->SetDirection(LINE_J); }
void SetDirectionToLineK() { this->SetDirection(LINE_K); }
void SetDirectionToPlaneIJ() { this->SetDirection(PLANE_IJ); }
void SetDirectionToPlaneJK() { this->SetDirection(PLANE_JK); }
void SetDirectionToPlaneKI() { this->SetDirection(PLANE_KI); }
///@}
///@{
/**
* Get/Set the controller to use. By default
* vtkMultiProcessController::GlobalController will be used.
*/
void SetController(vtkMultiProcessController*);
vtkGetObjectMacro(Controller, vtkMultiProcessController);
///@}
protected:
vtkExtractSubsetWithSeed();
~vtkExtractSubsetWithSeed() override;
int FillInputPortInformation(int port, vtkInformation* info) override;
int RequestInformation(vtkInformation*, vtkInformationVector** inputVector,
vtkInformationVector* outputVector) override;
int RequestDataObject(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
int RequestData(vtkInformation*, vtkInformationVector** inputVector,
vtkInformationVector* outputVector) override;
private:
vtkExtractSubsetWithSeed(const vtkExtractSubsetWithSeed&) = delete;
void operator=(const vtkExtractSubsetWithSeed&) = delete;
double Seed[3] = { 0, 0, 0 };
int Direction = LINE_I;
vtkMultiProcessController* Controller = nullptr;
};
VTK_ABI_NAMESPACE_END
#endif
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