diff options
Diffstat (limited to 'src/c_api.cpp')
| -rw-r--r-- | src/c_api.cpp | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/src/c_api.cpp b/src/c_api.cpp index 03a0c0bd..9d66071b 100644 --- a/src/c_api.cpp +++ b/src/c_api.cpp @@ -522,6 +522,42 @@ PJ_OBJ *proj_obj_create_from_database(PJ_CONTEXT *ctx, const char *auth_name, // --------------------------------------------------------------------------- +/** \brief Return GeodeticCRS that use the specified datum. + * + * @param ctx Context, or NULL for default context. + * @param crs_auth_name CRS authority name, or NULL. + * @param datum_auth_name Datum authority name (must not be NULL) + * @param datum_code Datum code (must not be NULL) + * @param crs_type "geographic 2D", "geographic 3D", "geocentric" or NULL + * @return a result set that must be unreferenced with + * proj_obj_list_unref(), or NULL in case of error. + */ +PJ_OBJ_LIST *proj_obj_query_geodetic_crs_from_datum(PJ_CONTEXT *ctx, + const char *crs_auth_name, + const char *datum_auth_name, + const char *datum_code, + const char *crs_type) { + assert(datum_auth_name); + assert(datum_code); + SANITIZE_CTX(ctx); + try { + auto factory = AuthorityFactory::create( + getDBcontext(ctx), crs_auth_name ? crs_auth_name : ""); + auto res = factory->createGeodeticCRSFromDatum( + datum_auth_name, datum_code, crs_type ? crs_type : ""); + std::vector<IdentifiedObjectNNPtr> objects; + for (const auto &obj : res) { + objects.push_back(obj); + } + return new PJ_OBJ_LIST(std::move(objects)); + } catch (const std::exception &e) { + proj_log_error(ctx, __FUNCTION__, e.what()); + } + return nullptr; +} + +// --------------------------------------------------------------------------- + /** \brief Drops a reference on an object. * * This method should be called one and exactly one for each function |