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/*=========================================================================
Program: Visualization Toolkit
Module: $RCSfile: vtkExtractSelectedThresholds.h,v $
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.
=========================================================================*/
// .NAME vtkExtractSelectedThresholds - extract a cells or points from a
// dataset that have values within a set of thresholds.
// .SECTION Description
// 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.
// .SECTION See Also
// vtkSelection vtkExtractSelection vtkThreshold
#ifndef __vtkExtractSelectedThresholds_h
#define __vtkExtractSelectedThresholds_h
#include "vtkDataSetAlgorithm.h"
class vtkSelection;
class vtkDataArray;
class vtkDoubleArray;
class VTK_GRAPHICS_EXPORT vtkExtractSelectedThresholds : public vtkDataSetAlgorithm
{
public:
vtkTypeRevisionMacro(vtkExtractSelectedThresholds,vtkDataSetAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Constructor
static vtkExtractSelectedThresholds *New();
protected:
vtkExtractSelectedThresholds();
~vtkExtractSelectedThresholds();
//sets up output dataset
virtual int RequestDataObject(vtkInformation* request,
vtkInformationVector** inputVector,
vtkInformationVector* outputVector);
// Usual data generation method
int RequestData(vtkInformation *,
vtkInformationVector **,
vtkInformationVector *);
int ExtractCells(vtkSelection *sel, vtkDataSet *input,
vtkDataSet *output,
int usePointScalars);
int ExtractPoints(vtkSelection *sel, vtkDataSet *input,
vtkDataSet *output);
int EvaluateValue(vtkDataArray *scalars, vtkIdType id, vtkDoubleArray *lims);
virtual int FillInputPortInformation(int port, vtkInformation* info);
private:
vtkExtractSelectedThresholds(const vtkExtractSelectedThresholds&); // Not implemented.
void operator=(const vtkExtractSelectedThresholds&); // Not implemented.
};
#endif
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