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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
/**
* @class vtkHyperTreeGridTotalVisibleVolumeStrategy
* @brief Define the TotalVisibleVolume field data used in vtkHyperTreeGridGenerateFields
*
* This is a class used by vtkHyperTreeGridGenerateFields to add and compute the TotalVisibleVolume
* field data, based on the previously computed cell data ValidCell and CellSize.
*
* This field contains the total value of the visible cells volumes. Whether a cell is visible is
* retrieved from the ValidCell cell data array, and its volume from CellSize.
*/
#ifndef vtkHyperTreeGridTotalVisibleVolumeStrategy_h
#define vtkHyperTreeGridTotalVisibleVolumeStrategy_h
#include "vtkFiltersHyperTreeModule.h" // For export macro
#include "vtkHyperTreeGridGenerateFieldStrategy.h"
#include "vtkNew.h"
VTK_ABI_NAMESPACE_BEGIN
class vtkCellData;
class vtkDataArray;
class vtkDoubleArray;
class vtkHyperTreeGrid;
class vtkHyperTreeGridNonOrientedGeometryCursor;
class VTKFILTERSHYPERTREE_EXPORT vtkHyperTreeGridTotalVisibleVolumeStrategy
: public vtkHyperTreeGridGenerateFieldStrategy
{
public:
static vtkHyperTreeGridTotalVisibleVolumeStrategy* New();
vtkTypeMacro(vtkHyperTreeGridTotalVisibleVolumeStrategy, vtkHyperTreeGridGenerateFieldStrategy);
void PrintSelf(ostream& os, vtkIndent indent) override;
using vtkHyperTreeGridGenerateFieldStrategy::Initialize;
/**
* Init internal variables from `inputHTG`.
*/
bool Initialize(std::unordered_map<std::string, Field> fieldMap) override;
using vtkHyperTreeGridGenerateFieldStrategy::Compute;
/**
* Aggregates the volume of visible cells. Retrieves `ValidCell` and `CellSize` arrays from
* `cellData` to check if the current cell is visible and get its volume.
*/
void Compute(vtkHyperTreeGridNonOrientedGeometryCursor* cursor, vtkCellData* cellData,
std::unordered_map<std::string, Field> fieldMap) override;
/**
* Set a unique tuple of `TotalVisibleVolumeArray` to `TotalVisibleVolume` and return the array.
*/
vtkDataArray* GetAndFinalizeArray() override;
private:
vtkHyperTreeGridTotalVisibleVolumeStrategy();
~vtkHyperTreeGridTotalVisibleVolumeStrategy() override;
// Aggregated volume
double TotalVisibleVolume = 0;
// Output array
vtkNew<vtkDoubleArray> TotalVisibleVolumeArray;
};
VTK_ABI_NAMESPACE_END
#endif // vtkHyperTreeGridTotalVisibleVolumeStrategy_h
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