libvtk7-dev 7.1.1+dfsg1-2 / usr / include / vtk-7.1 / vtkExtractSelectedThresholds.h

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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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