Interpolator.h

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#ifndef Interpolator_h
#define Interpolator_h

#include "SpecialPixel.h"

namespace Isis {
  class Interpolator {
    public:
      enum interpType {
        None = 0,
        NearestNeighborType = 1,
        BiLinearType = 2,
        CubicConvolutionType = 4
      };

    private:
      interpType p_type;


      void Init();


      double NearestNeighbor(const double isamp, const double iline,
                             const double buf[]);

      // Do a bilinear interpolation on the buf
      double BiLinear(const double isamp, const double iline,
                      const double buf[]);

      // Do a cubic convolution on the buf
      double CubicConvolution(const double isamp, const double iline,
                              const double buf[]);


    public:
      // Constructores / destructores
      Interpolator();
      Interpolator(const interpType &type);
      ~Interpolator();


      // Perform the interpolation with the current settings
      double Interpolate(const double isamp, const double iline,
                         const double buf[]);


      // Set the type of interpolation
      void SetType(const interpType &type);


      // Return sizes needed by the interpolator
      int Samples();
      int Lines();


      // Return the hot spot (center pixel) of the interpolator zero based
      double HotSample();
      double HotLine();
  };
};
#endif