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

  Program:   Visualization Toolkit
  Module:    vtkInterpolateDataSetAttributes.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.

=========================================================================*/
// .NAME vtkInterpolateDataSetAttributes - interpolate scalars, vectors, etc. and other dataset attributes
// .SECTION Description
// vtkInterpolateDataSetAttributes is a filter that interpolates data set
// attribute values between input data sets. The input to the filter
// must be datasets of the same type, same number of cells, and same
// number of points. The output of the filter is a data set of the same
// type as the input dataset and whose attribute values have been
// interpolated at the parametric value specified.
//
// The filter is used by specifying two or more input data sets (total of N),
// and a parametric value t (0 <= t <= N-1). The output will contain
// interpolated data set attributes common to all input data sets. (For
// example, if one input has scalars and vectors, and another has just
// scalars, then only scalars will be interpolated and output.)

#ifndef vtkInterpolateDataSetAttributes_h
#define vtkInterpolateDataSetAttributes_h

#include "vtkFiltersGeneralModule.h" // For export macro
#include "vtkDataSetAlgorithm.h"

class vtkDataSetCollection;

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

  // Description:
  // Return the list of inputs to this filter.
  vtkDataSetCollection *GetInputList();

  // Description:
  // Specify interpolation parameter t.
  vtkSetClampMacro(T,double,0.0,VTK_DOUBLE_MAX);
  vtkGetMacro(T,double);

protected:
  vtkInterpolateDataSetAttributes();
  ~vtkInterpolateDataSetAttributes();

  virtual void ReportReferences(vtkGarbageCollector*);

  int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
  int FillInputPortInformation(int port, vtkInformation *info);

  vtkDataSetCollection *InputList; // list of data sets to interpolate
  double T; // interpolation parameter

private:
  vtkInterpolateDataSetAttributes(const vtkInterpolateDataSetAttributes&);  // Not implemented.
  void operator=(const vtkInterpolateDataSetAttributes&);  // Not implemented.
};

#endif