tColumnInterpolation.hh - pism - [fork] customized build of PISM, the parallel ice sheet model (tillflux branch)
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       tColumnInterpolation.hh (2327B)
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            1 /* Copyright (C) 2014, 2015 PISM Authors
            2  *
            3  * This file is part of PISM.
            4  *
            5  * PISM is free software; you can redistribute it and/or modify it under the
            6  * terms of the GNU General Public License as published by the Free Software
            7  * Foundation; either version 3 of the License, or (at your option) any later
            8  * version.
            9  *
           10  * PISM is distributed in the hope that it will be useful, but WITHOUT ANY
           11  * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
           12  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
           13  * details.
           14  *
           15  * You should have received a copy of the GNU General Public License
           16  * along with PISM; if not, write to the Free Software
           17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
           18  */
           19 
           20 #ifndef _COLUMNINTERPOLATION_H_
           21 #define _COLUMNINTERPOLATION_H_
           22 
           23 #include <vector>
           24 
           25 namespace pism {
           26 
           27 class ColumnInterpolation {
           28 public:
           29   ColumnInterpolation(const std::vector<double> &z_coarse,
           30                       const std::vector<double> &z_fine);
           31 
           32   void coarse_to_fine(const double *input, unsigned int ks, double *result) const;
           33   void fine_to_coarse(const double *input, double *result) const;
           34 
           35   // These two methods allocate fresh storage for the output.
           36   std::vector<double> coarse_to_fine(const std::vector<double> &input, unsigned int ks) const;
           37   std::vector<double> fine_to_coarse(const std::vector<double> &input) const;
           38 
           39   unsigned int Mz_coarse() const;
           40   const std::vector<double>& z_coarse() const;
           41 
           42   unsigned int Mz_fine() const;
           43   double dz_fine() const;
           44   const std::vector<double>& z_fine() const;
           45 private:
           46   std::vector<double> m_z_fine, m_z_coarse;
           47   std::vector<double> m_constants;
           48 
           49   // Array m_coarse2fine contains indices of the ice coarse vertical grid
           50   // that are just below a level of the fine grid. I.e. m_coarse2fine[k] is
           51   // the coarse grid level just below fine-grid level k (zlevels_fine[k]).
           52   // Similarly for other arrays below.
           53   std::vector<unsigned int> m_coarse2fine, m_fine2coarse;
           54   bool m_use_linear_interpolation;
           55 
           56   void init_interpolation();
           57   void coarse_to_fine_linear(const double *input, unsigned int ks, double *result) const;
           58   void coarse_to_fine_quadratic(const double *input, unsigned int ks, double *result) const;
           59 };
           60 
           61 } // end of namespace pism
           62 
           63 #endif /* _COLUMNINTERPOLATION_H_ */