spectral_interpolate.h

Go to the documentation of this file.

 
#ifndef NIHU_SPECTRAL_INTERPOLATE_H_INCLUDED
#define NIHU_SPECTRAL_INTERPOLATE_H_INCLUDED
 
#include <fftw3.h>
#include <Eigen/Dense>
#include <complex>
 
namespace NiHu
{
namespace fmm
{
 
class spectral_interpolate
{
public:
    typedef Eigen::Matrix<std::complex<double>, Eigen::Dynamic, 1> cvector_t;
 
    ~spectral_interpolate();
    
    spectral_interpolate(size_t Nto = 0, size_t Nfrom = 0);
    
    spectral_interpolate(spectral_interpolate const &rhs);
    
    spectral_interpolate(spectral_interpolate &&rhs);
 
    spectral_interpolate &operator=(spectral_interpolate const &rhs);
    
    spectral_interpolate &operator=(spectral_interpolate &&rhs);
 
    cvector_t const &interpolate(cvector_t const &from) const;
 
private:
    void init();
    void destroy();
 
private:
    size_t m_Nto;
    size_t m_Nfrom;
    fftw_plan m_dft_plan;
    fftw_plan m_idft_plan;
    mutable cvector_t m_in_spec;
    mutable cvector_t m_in;
    mutable cvector_t m_out;
    mutable cvector_t m_out_spec;
};
 
} // end of namesapce
} // namespace NiHu
 
#endif /* NIHU_SPECTRAL_INTERPOLATE_H_INCLUDED */