dox/Graphics/vtkProbeFilter.h

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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkProbeFilter.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.

=========================================================================*/
#ifndef __vtkProbeFilter_h
#define __vtkProbeFilter_h

#include "vtkDataSetAlgorithm.h"
#include "vtkDataSetAttributes.h" // needed for vtkDataSetAttributes::FieldList

class vtkIdTypeArray;
class vtkCharArray;
class vtkMaskPoints;

class VTK_GRAPHICS_EXPORT vtkProbeFilter : public vtkDataSetAlgorithm
{
public:
  static vtkProbeFilter *New();
  vtkTypeMacro(vtkProbeFilter,vtkDataSetAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent);


  void SetSource(vtkDataObject *source);
  vtkDataObject *GetSource();

  void SetSourceConnection(vtkAlgorithmOutput* algOutput);


  vtkSetMacro(SpatialMatch, int);
  vtkGetMacro(SpatialMatch, int);
  vtkBooleanMacro(SpatialMatch, int);


  vtkGetObjectMacro(ValidPoints, vtkIdTypeArray);
 

  vtkSetStringMacro(ValidPointMaskArrayName)
  vtkGetStringMacro(ValidPointMaskArrayName)

//BTX 
protected:
  vtkProbeFilter();
  ~vtkProbeFilter();

  int SpatialMatch;

  virtual int RequestData(vtkInformation *, vtkInformationVector **, 
    vtkInformationVector *);
  virtual int RequestInformation(vtkInformation *, vtkInformationVector **, 
    vtkInformationVector *);
  virtual int RequestUpdateExtent(vtkInformation *, vtkInformationVector **, 
    vtkInformationVector *);

  void Probe(vtkDataSet *input, vtkDataSet *source, vtkDataSet *output);

  void BuildFieldList(vtkDataSet* source);

  virtual void InitializeForProbing(vtkDataSet *input, vtkDataSet *output);


  void ProbeEmptyPoints(vtkDataSet *input, int srcIdx, vtkDataSet *source, 
    vtkDataSet *output);

  char* ValidPointMaskArrayName;
  vtkIdTypeArray *ValidPoints;
  vtkCharArray* MaskPoints;
  int NumberOfValidPoints;

  // Agreed, this is sort of a hack to allow subclasses to override the default
  // behavior of this filter to call NullPoint() for every point that is
  // not-a-hit when probing. This makes it possible for subclasses to initialize
  // the arrays with different defaults.
  bool UseNullPoint;

  vtkDataSetAttributes::FieldList* CellList;
  vtkDataSetAttributes::FieldList* PointList;
private:
  vtkProbeFilter(const vtkProbeFilter&);  // Not implemented.
  void operator=(const vtkProbeFilter&);  // Not implemented.

  class vtkVectorOfArrays;
  vtkVectorOfArrays* CellArrays;
//ETX
};

#endif