proj.hpp

#ifndef NGEN_GEOPACKAGE_PROJ_HPP
#define NGEN_GEOPACKAGE_PROJ_HPP
 
#include <boost/geometry/srs/projection.hpp>
#include <unordered_map>
 
namespace ngen {
namespace srs {
 
namespace bg = boost::geometry;
 
struct epsg
{
    using srs_type = bg::srs::dpar::parameters<double>;
 
    enum {
        wgs84        = 4326,
        conus_albers = 5070,
        mercator     = 3857
    };
 
    static srs_type get(uint32_t srid);
 
  private:
    using def_type = std::unordered_map<int, srs_type>;
    static const def_type defs_;
};
 
} // namespace srs
} // namespace ngen
 
#endif // NGEN_GEOPACKAGE_PROJ_HPP