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124 lines
3.8 KiB
C++
124 lines
3.8 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkGenerateIndexArray.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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Copyright 2008 Sandia Corporation.
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Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
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the U.S. Government retains certain rights in this software.
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-------------------------------------------------------------------------*/
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/**
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* @class vtkGenerateIndexArray
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*
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*
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* Generates a new vtkIdTypeArray containing zero-base indices.
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*
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* vtkGenerateIndexArray operates in one of two distinct "modes".
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* By default, it simply generates an index array containing
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* monotonically-increasing integers in the range [0, N), where N
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* is appropriately sized for the field type that will store the
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* results. This mode is useful for generating a unique ID field
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* for datasets that have none.
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*
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* The second "mode" uses an existing array from the input data
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* object as a "reference". Distinct values from the reference
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* array are sorted in ascending order, and an integer index in
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* the range [0, N) is assigned to each. The resulting map is
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* used to populate the output index array, mapping each value
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* in the reference array to its corresponding index and storing
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* the result in the output array. This mode is especially
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* useful when generating tensors, since it allows us to "map"
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* from an array with arbitrary contents to an index that can
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* be used as tensor coordinates.
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*/
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#ifndef vtkGenerateIndexArray_h
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#define vtkGenerateIndexArray_h
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#include "vtkDataObjectAlgorithm.h"
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#include "vtkInfovisCoreModule.h" // For export macro
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class VTKINFOVISCORE_EXPORT vtkGenerateIndexArray : public vtkDataObjectAlgorithm
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{
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public:
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static vtkGenerateIndexArray* New();
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vtkTypeMacro(vtkGenerateIndexArray, vtkDataObjectAlgorithm);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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//@{
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/**
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* Control the output index array name. Default: "index".
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*/
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vtkSetStringMacro(ArrayName);
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vtkGetStringMacro(ArrayName);
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//@}
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//@{
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/**
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* Control the location where the index array will be stored.
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*/
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vtkSetMacro(FieldType, int);
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vtkGetMacro(FieldType, int);
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//@}
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//@{
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/**
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* Specifies an optional reference array for index-generation.
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*/
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vtkSetStringMacro(ReferenceArrayName);
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vtkGetStringMacro(ReferenceArrayName);
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//@}
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//@{
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/**
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* Specifies whether the index array should be marked as
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* pedigree ids. Default: false.
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*/
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vtkSetMacro(PedigreeID, int);
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vtkGetMacro(PedigreeID, int);
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//@}
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enum
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{
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ROW_DATA = 0,
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POINT_DATA = 1,
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CELL_DATA = 2,
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VERTEX_DATA = 3,
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EDGE_DATA = 4
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};
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protected:
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vtkGenerateIndexArray();
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~vtkGenerateIndexArray() override;
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vtkTypeBool ProcessRequest(vtkInformation* request, vtkInformationVector** inputVector,
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vtkInformationVector* outputVector) override;
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int RequestDataObject(vtkInformation* request, vtkInformationVector** inputVector,
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vtkInformationVector* outputVector) override;
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int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
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char* ArrayName;
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int FieldType;
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char* ReferenceArrayName;
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int PedigreeID;
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private:
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vtkGenerateIndexArray(const vtkGenerateIndexArray&) = delete;
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void operator=(const vtkGenerateIndexArray&) = delete;
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};
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#endif
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