teca_cartesian_mesh_regrid.h

#ifndef teca_cartesian_mesh_regrid_h
#define teca_cartesian_mesh_regrid_h
 
#include "teca_shared_object.h"
#include "teca_algorithm.h"
#include "teca_metadata.h"
#include "teca_variant_array_fwd.h"
 
#include <string>
#include <vector>
 
TECA_SHARED_OBJECT_FORWARD_DECL(teca_cartesian_mesh_regrid)
 
 
class teca_cartesian_mesh_regrid : public teca_algorithm
{
public:
    TECA_ALGORITHM_STATIC_NEW(teca_cartesian_mesh_regrid)
    TECA_ALGORITHM_DELETE_COPY_ASSIGN(teca_cartesian_mesh_regrid)
    TECA_ALGORITHM_CLASS_NAME(teca_cartesian_mesh_regrid)
    ~teca_cartesian_mesh_regrid();
 
    // report/initialize to/from Boost program options
    // objects.
    TECA_GET_ALGORITHM_PROPERTIES_DESCRIPTION()
    TECA_SET_ALGORITHM_PROPERTIES()
 
    // set the list of arrays to move from the source
    // to the target
    TECA_ALGORITHM_VECTOR_PROPERTY(std::string, array)
 
    // set the input connection from which metadata such as arrays
    // and time steps are taken from.
    TECA_ALGORITHM_PROPERTY(int, target_input)
 
    // set the interpolation mode used in transfering
    // data between meshes of differing resolution.
    // in nearest mode value at the nearest grid point
    // is used, in linear mode bi/tri linear interpolation
    // is used.
    enum {nearest=0, linear=1};
    TECA_ALGORITHM_PROPERTY(int, interpolation_mode)
    void set_interpolation_mode_nearest(){ interpolation_mode = nearest; }
    void set_interpolation_mode_linear(){ interpolation_mode = linear; }
 
protected:
    teca_cartesian_mesh_regrid();
 
private:
    teca_metadata get_output_metadata(unsigned int port,
        const std::vector<teca_metadata> &input_md) override;
 
    std::vector<teca_metadata> get_upstream_request(
        unsigned int port, const std::vector<teca_metadata> &input_md,
        const teca_metadata &request) override;
 
    const_p_teca_dataset execute(unsigned int port,
        const std::vector<const_p_teca_dataset> &input_data,
        const teca_metadata &request) override;
 
private:
    std::vector<std::string> arrays;
    int target_input;
    int interpolation_mode;
};
 
#endif