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100 lines
3.0 KiB
C++
100 lines
3.0 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkCellCenters.h
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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/**
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* @class vtkCellCenters
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* @brief generate points at center of cells
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*
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* vtkCellCenters is a filter that takes as input any dataset and
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* generates on output points at the center of the cells in the dataset.
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* These points can be used for placing glyphs (vtkGlyph3D) or labeling
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* (vtkLabeledDataMapper). (The center is the parametric center of the
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* cell, not necessarily the geometric or bounding box center.) The cell
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* attributes will be associated with the points on output.
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*
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* @warning
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* You can choose to generate just points or points and vertex cells.
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* Vertex cells are drawn during rendering; points are not. Use the ivar
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* VertexCells to generate cells.
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*
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* @note
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* Empty cells will be ignored but will require a one by one cell to
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* point data copy that will make the processing slower.
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*
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* @sa
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* vtkGlyph3D vtkLabeledDataMapper
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*/
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#ifndef vtkCellCenters_h
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#define vtkCellCenters_h
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#include "vtkFiltersCoreModule.h" // For export macro
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#include "vtkPolyDataAlgorithm.h"
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class vtkDoubleArray;
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class VTKFILTERSCORE_EXPORT vtkCellCenters : public vtkPolyDataAlgorithm
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{
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public:
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vtkTypeMacro(vtkCellCenters, vtkPolyDataAlgorithm);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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/**
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* Construct object with vertex cell generation turned off.
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*/
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static vtkCellCenters* New();
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//@{
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/**
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* Enable/disable the generation of vertex cells. The default
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* is Off.
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*/
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vtkSetMacro(VertexCells, bool);
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vtkGetMacro(VertexCells, bool);
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vtkBooleanMacro(VertexCells, bool);
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//@}
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//@{
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/**
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* Enable/disable whether input cell data arrays should be passed through (or
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* copied) as output point data arrays. Default is `true` i.e. the arrays will
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* be propagated.
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*/
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vtkSetMacro(CopyArrays, bool);
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vtkGetMacro(CopyArrays, bool);
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vtkBooleanMacro(CopyArrays, bool);
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//@}
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/**
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* Compute centers of cells from a dataset, storing them in the centers array.
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*/
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static void ComputeCellCenters(vtkDataSet* dataset, vtkDoubleArray* centers);
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protected:
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vtkCellCenters() = default;
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~vtkCellCenters() override = default;
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int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
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int FillInputPortInformation(int port, vtkInformation* info) override;
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bool VertexCells = false;
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bool CopyArrays = true;
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private:
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vtkCellCenters(const vtkCellCenters&) = delete;
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void operator=(const vtkCellCenters&) = delete;
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};
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#endif
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