ERF_StationSampler.H File Reference

#include <algorithm>
#include <cmath>
#include <string>
#include <AMReX_BoxArray.H>
#include <AMReX_REAL.H>
#include <AMReX_Vector.H>

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Classes
struct	StationVar
struct	StationLoc
struct	StationColumn
struct	Station
class	StationSampler

Functions
bool	invert_latlon_offset (amrex::Real dlat, amrex::Real dlon, amrex::Real dlat_di, amrex::Real dlon_di, amrex::Real dlat_dj, amrex::Real dlon_dj, amrex::Real &di, amrex::Real &dj)

Function Documentation

invert_latlon_offset()

bool invert_latlon_offset ( amrex::Real  dlat, amrex::Real  dlon, amrex::Real  dlat_di, amrex::Real  dlon_di, amrex::Real  dlat_dj, amrex::Real  dlon_dj, amrex::Real &  di, amrex::Real &  dj  )

inline

{
    const amrex::Real scale = std::max(std::max(std::abs(dlat_di), std::abs(dlon_di)),
                                       std::max(std::abs(dlat_dj), std::abs(dlon_dj)));
    const amrex::Real det = dlat_di*dlon_dj - dlat_dj*dlon_di;
    if (scale <= amrex::Real(0.0) || std::abs(det) <= amrex::Real(1.0e-12)*scale*scale) {
        return false;
    }
    di = ( dlat*dlon_dj - dlon*dlat_dj) / det;
    dj = (-dlat*dlon_di + dlon*dlat_di) / det;
    return true;
}

Referenced by ERF::resolve_station_positions().

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