vtkPointInterpolator.h

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

  Program:   Visualization Toolkit
  Module:    vtkPointInterpolator.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 vtkPointInterpolator_h
#define vtkPointInterpolator_h

#include "vtkFiltersPointsModule.h" // For export macro
#include "vtkDataSetAlgorithm.h"
#include "vtkStdString.h"        // For vtkStdString ivars
#include <vector> //For STL vector

class vtkAbstractPointLocator;
class vtkIdList;
class vtkDoubleArray;
class vtkInterpolationKernel;
class vtkCharArray;


class VTKFILTERSPOINTS_EXPORT vtkPointInterpolator : public vtkDataSetAlgorithm
{
public:

  static vtkPointInterpolator *New();
  vtkTypeMacro(vtkPointInterpolator,vtkDataSetAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent) override;


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

  void SetSourceConnection(vtkAlgorithmOutput* algOutput);


  void SetLocator(vtkAbstractPointLocator *locator);
  vtkGetObjectMacro(Locator,vtkAbstractPointLocator);


  void SetKernel(vtkInterpolationKernel *kernel);
  vtkGetObjectMacro(Kernel,vtkInterpolationKernel);

  enum Strategy
  {
    MASK_POINTS=0,
    NULL_VALUE=1,
    CLOSEST_POINT=2
  };


  vtkSetMacro(NullPointsStrategy,int);
  vtkGetMacro(NullPointsStrategy,int);
  void SetNullPointsStrategyToMaskPoints()
    { this->SetNullPointsStrategy(MASK_POINTS); }
  void SetNullPointsStrategyToNullValue()
    { this->SetNullPointsStrategy(NULL_VALUE); }
  void SetNullPointsStrategyToClosestPoint()
    { this->SetNullPointsStrategy(CLOSEST_POINT); }


  vtkSetMacro(ValidPointsMaskArrayName, vtkStdString);
  vtkGetMacro(ValidPointsMaskArrayName, vtkStdString);


  vtkSetMacro(NullValue,double);
  vtkGetMacro(NullValue,double);


  void AddExcludedArray(const vtkStdString &excludedArray)
  {
    this->ExcludedArrays.push_back(excludedArray);
    this->Modified();
  }


  void ClearExcludedArrays()
  {
    this->ExcludedArrays.clear();
    this->Modified();
  }

  int GetNumberOfExcludedArrays()
    {return static_cast<int>(this->ExcludedArrays.size());}


  const char* GetExcludedArray(int i)
  {
      if ( i < 0 || i >= static_cast<int>(this->ExcludedArrays.size()) )
      {
        return nullptr;
      }
      return this->ExcludedArrays[i].c_str();
  }


  vtkSetMacro(PromoteOutputArrays, bool);
  vtkBooleanMacro(PromoteOutputArrays, bool);
  vtkGetMacro(PromoteOutputArrays, bool);


  vtkSetMacro(PassPointArrays, bool);
  vtkBooleanMacro(PassPointArrays, bool);
  vtkGetMacro(PassPointArrays, bool);


  vtkSetMacro(PassCellArrays, bool);
  vtkBooleanMacro(PassCellArrays, bool);
  vtkGetMacro(PassCellArrays, bool);


  vtkSetMacro(PassFieldArrays, bool);
  vtkBooleanMacro(PassFieldArrays, bool);
  vtkGetMacro(PassFieldArrays, bool);

  vtkMTimeType GetMTime() override;

protected:
  vtkPointInterpolator();
  ~vtkPointInterpolator() override;

  vtkAbstractPointLocator *Locator;
  vtkInterpolationKernel *Kernel;

  int NullPointsStrategy;
  double NullValue;
  vtkStdString ValidPointsMaskArrayName;
  vtkCharArray *ValidPointsMask;

  std::vector<vtkStdString> ExcludedArrays;

  bool PromoteOutputArrays;

  bool PassCellArrays;
  bool PassPointArrays;
  bool PassFieldArrays;

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

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

  virtual void PassAttributeData(
    vtkDataSet* input, vtkDataObject* source, vtkDataSet* output);

  void ExtractImageDescription(vtkImageData *input, int dims[3],
                               double origin[3], double spacing[3]);

private:
  vtkPointInterpolator(const vtkPointInterpolator&) = delete;
  void operator=(const vtkPointInterpolator&) = delete;

};

#endif