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/*=========================================================================
Program: Visualization Toolkit
Module: vtkExtractSelectedThresholds.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
/**
* @class vtkExtractSelectedThresholds
* @brief extract a cells or points from a
* dataset that have values within a set of thresholds.
*
*
* vtkExtractSelectedThresholds extracts all cells and points with attribute
* values that lie within a vtkSelection's THRESHOLD contents. The selecion
* can specify to threshold a particular array within either the point or cell
* attribute data of the input. This is similar to vtkThreshold
* but allows mutliple thresholds ranges.
* This filter adds a scalar array called vtkOriginalCellIds that says what
* input cell produced each output cell. This is an example of a Pedigree ID
* which helps to trace back results.
*
* @sa
* vtkSelection vtkExtractSelection vtkThreshold
*/
#ifndef vtkExtractSelectedThresholds_h
#define vtkExtractSelectedThresholds_h
#include "vtkFiltersExtractionModule.h" // For export macro
#include "vtkExtractSelectionBase.h"
class vtkDataArray;
class vtkSelection;
class vtkSelectionNode;
class vtkTable;
class VTKFILTERSEXTRACTION_EXPORT vtkExtractSelectedThresholds : public vtkExtractSelectionBase
{
public:
vtkTypeMacro(vtkExtractSelectedThresholds, vtkExtractSelectionBase);
void PrintSelf(ostream& os, vtkIndent indent);
/**
* Constructor
*/
static vtkExtractSelectedThresholds *New();
/**
* Function for determining whether a value in a data array passes
* the threshold test(s) provided in lims. Returns 1 if the value
* passes at least one of the threshold tests.
* If \c scalars is NULL, then the id itself is used as the scalar value.
*/
static int EvaluateValue(vtkDataArray *scalars,
vtkIdType id, vtkDataArray *lims)
{
return vtkExtractSelectedThresholds::EvaluateValue(scalars, 0, id, lims);
}
/**
* Same as the other EvaluateValue except that the component to be compared
* can be picked using array_component_no (use -1 for magnitude).
* If \c scalars is NULL, then the id itself is used as the scalar value.
*/
static int EvaluateValue(vtkDataArray *array,
int array_component_no,
vtkIdType id, vtkDataArray *lims);
/**
* Function for determining whether a value in a data array passes
* the threshold test(s) provided in lims. Returns 1 if the value
* passes at least one of the threshold tests. Also returns in
* AboveCount, BelowCount and InsideCount the number of tests where
* the value was above, below or inside the interval.
* If \c scalars is NULL, then the id itself is used as the scalar value.
*/
static int EvaluateValue(vtkDataArray *scalars, vtkIdType id,
vtkDataArray *lims, int *AboveCount, int *BelowCount, int *InsideCount)
{
return vtkExtractSelectedThresholds::EvaluateValue(scalars, 0,
id, lims, AboveCount, BelowCount, InsideCount);
}
/**
* Same as the other EvaluateValue except that the component to be compared
* can be picked using array_component_no (use -1 for magnitude).
* If \c scalars is NULL, then the id itself is used as the scalar value.
*/
static int EvaluateValue(vtkDataArray *scalars,
int array_component_no,
vtkIdType id,
vtkDataArray *lims, int *AboveCount, int *BelowCount, int *InsideCount);
protected:
vtkExtractSelectedThresholds();
~vtkExtractSelectedThresholds();
// Usual data generation method
int RequestData(vtkInformation *,
vtkInformationVector **,
vtkInformationVector *);
int ExtractCells(vtkSelectionNode *sel, vtkDataSet *input,
vtkDataSet *output,
int usePointScalars);
int ExtractPoints(vtkSelectionNode *sel, vtkDataSet *input,
vtkDataSet *output);
int ExtractRows(vtkSelectionNode* sel, vtkTable* input, vtkTable* output);
private:
vtkExtractSelectedThresholds(const vtkExtractSelectedThresholds&) VTK_DELETE_FUNCTION;
void operator=(const vtkExtractSelectedThresholds&) VTK_DELETE_FUNCTION;
};
#endif
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