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117 lines
4.4 KiB
C++
117 lines
4.4 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkExtractSelectedThresholds.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 vtkExtractSelectedThresholds
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* @brief extract a cells or points from a
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* dataset that have values within a set of thresholds.
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*
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*
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* vtkExtractSelectedThresholds extracts all cells and points with attribute
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* values that lie within a vtkSelection's THRESHOLD contents. The selecion
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* can specify to threshold a particular array within either the point or cell
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* attribute data of the input. This is similar to vtkThreshold
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* but allows multiple thresholds ranges.
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* This filter adds a scalar array called vtkOriginalCellIds that says what
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* input cell produced each output cell. This is an example of a Pedigree ID
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* which helps to trace back results.
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*
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* @sa
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* vtkSelection vtkExtractSelection vtkThreshold
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*/
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#ifndef vtkExtractSelectedThresholds_h
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#define vtkExtractSelectedThresholds_h
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#include "vtkExtractSelectionBase.h"
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#include "vtkFiltersExtractionModule.h" // For export macro
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class vtkDataArray;
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class vtkSelection;
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class vtkSelectionNode;
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class vtkTable;
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class VTKFILTERSEXTRACTION_EXPORT vtkExtractSelectedThresholds : public vtkExtractSelectionBase
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{
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public:
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vtkTypeMacro(vtkExtractSelectedThresholds, vtkExtractSelectionBase);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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/**
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* Constructor
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*/
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static vtkExtractSelectedThresholds* New();
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/**
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* Function for determining whether a value in a data array passes
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* the threshold test(s) provided in lims. Returns 1 if the value
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* passes at least one of the threshold tests.
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* If \c scalars is nullptr, then the id itself is used as the scalar value.
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*/
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static int EvaluateValue(vtkDataArray* scalars, vtkIdType id, vtkDataArray* lims)
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{
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return vtkExtractSelectedThresholds::EvaluateValue(scalars, 0, id, lims);
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}
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/**
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* Same as the other EvaluateValue except that the component to be compared
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* can be picked using array_component_no (use -1 for magnitude).
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* If \c scalars is nullptr, then the id itself is used as the scalar value.
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*/
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static int EvaluateValue(
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vtkDataArray* array, int array_component_no, vtkIdType id, vtkDataArray* lims);
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/**
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* Function for determining whether a value in a data array passes
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* the threshold test(s) provided in lims. Returns 1 if the value
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* passes at least one of the threshold tests. Also returns in
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* AboveCount, BelowCount and InsideCount the number of tests where
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* the value was above, below or inside the interval.
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* If \c scalars is nullptr, then the id itself is used as the scalar value.
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*/
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static int EvaluateValue(vtkDataArray* scalars, vtkIdType id, vtkDataArray* lims, int* AboveCount,
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int* BelowCount, int* InsideCount)
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{
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return vtkExtractSelectedThresholds::EvaluateValue(
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scalars, 0, id, lims, AboveCount, BelowCount, InsideCount);
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}
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/**
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* Same as the other EvaluateValue except that the component to be compared
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* can be picked using array_component_no (use -1 for magnitude).
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* If \c scalars is nullptr, then the id itself is used as the scalar value.
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*/
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static int EvaluateValue(vtkDataArray* scalars, int array_component_no, vtkIdType id,
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vtkDataArray* lims, int* AboveCount, int* BelowCount, int* InsideCount);
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protected:
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vtkExtractSelectedThresholds();
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~vtkExtractSelectedThresholds() override;
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// Usual data generation method
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int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
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int ExtractCells(
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vtkSelectionNode* sel, vtkDataSet* input, vtkDataSet* output, int usePointScalars);
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int ExtractPoints(vtkSelectionNode* sel, vtkDataSet* input, vtkDataSet* output);
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int ExtractRows(vtkSelectionNode* sel, vtkTable* input, vtkTable* output);
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private:
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vtkExtractSelectedThresholds(const vtkExtractSelectedThresholds&) = delete;
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void operator=(const vtkExtractSelectedThresholds&) = delete;
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};
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#endif
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