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122 lines
3.8 KiB
C
122 lines
3.8 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkGenericDataSetTessellator.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 vtkGenericDataSetTessellator
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* @brief tessellates generic, higher-order datasets into linear cells
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*
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*
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* vtkGenericDataSetTessellator is a filter that subdivides a
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* vtkGenericDataSet into linear elements (i.e., linear VTK
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* cells). Tetrahedras are produced from 3D cells; triangles from 2D cells;
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* and lines from 1D cells. The subdivision process depends on the cell
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* tessellator associated with the input generic dataset, and its associated
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* error metric. (These can be specified by the user if necessary.)
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*
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* This filter is typically used to convert a higher-order, complex dataset
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* represented by a vtkGenericDataSet into a conventional vtkDataSet that can
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* be operated on by linear VTK graphics filters (end of pipeline for
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* rendering).
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*
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* @sa
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* vtkGenericCellTessellator vtkGenericSubdivisionErrorMetric
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*/
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#ifndef vtkGenericDataSetTessellator_h
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#define vtkGenericDataSetTessellator_h
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#include "vtkFiltersGenericModule.h" // For export macro
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#include "vtkUnstructuredGridAlgorithm.h"
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class vtkPointData;
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class vtkIncrementalPointLocator;
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class VTKFILTERSGENERIC_EXPORT vtkGenericDataSetTessellator : public vtkUnstructuredGridAlgorithm
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{
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public:
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//@{
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/**
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* Standard VTK methods.
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*/
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static vtkGenericDataSetTessellator* New();
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vtkTypeMacro(vtkGenericDataSetTessellator, vtkUnstructuredGridAlgorithm);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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//@}
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//@{
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/**
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* Turn on/off generation of a cell centered attribute with ids of the
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* original cells (as an input cell is tessellated into several linear
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* cells).
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* The name of the data array is "OriginalIds". It is true by default.
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*/
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vtkSetMacro(KeepCellIds, vtkTypeBool);
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vtkGetMacro(KeepCellIds, vtkTypeBool);
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vtkBooleanMacro(KeepCellIds, vtkTypeBool);
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//@}
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//@{
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/**
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* Turn on/off merging of coincident points. Note that is merging is
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* on, points with different point attributes (e.g., normals) are merged,
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* which may cause rendering artifacts.
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*/
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vtkSetMacro(Merging, vtkTypeBool);
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vtkGetMacro(Merging, vtkTypeBool);
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vtkBooleanMacro(Merging, vtkTypeBool);
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//@}
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//@{
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/**
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* Set / get a spatial locator for merging points. By
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* default an instance of vtkMergePoints is used.
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*/
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void SetLocator(vtkIncrementalPointLocator* locator);
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vtkGetObjectMacro(Locator, vtkIncrementalPointLocator);
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//@}
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/**
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* Create default locator. Used to create one when none is specified.
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*/
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void CreateDefaultLocator();
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/**
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* Return the MTime also considering the locator.
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*/
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vtkMTimeType GetMTime() override;
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protected:
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vtkGenericDataSetTessellator();
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~vtkGenericDataSetTessellator() override;
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int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
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int FillInputPortInformation(int, vtkInformation*) override;
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// See Set/Get KeepCellIds() for explanations.
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vtkTypeBool KeepCellIds;
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// Used internal by vtkGenericAdaptorCell::Tessellate()
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vtkPointData* InternalPD;
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vtkTypeBool Merging;
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vtkIncrementalPointLocator* Locator;
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private:
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vtkGenericDataSetTessellator(const vtkGenericDataSetTessellator&) = delete;
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void operator=(const vtkGenericDataSetTessellator&) = delete;
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};
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#endif
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