def pnt_func(f):
"For accessing point information."
return double_output(f, [c_void_p, c_int])
# Destroys a geometry destroy_geom = void_output(lgdal.OGR_G_DestroyGeometry, [c_void_p], errcheck=False) # Geometry export routines. to_wkb = void_output(lgdal.OGR_G_ExportToWkb, None, errcheck=True) # special handling for WKB. to_wkt = string_output(lgdal.OGR_G_ExportToWkt, [c_void_p, POINTER(c_char_p)]) to_gml = string_output(lgdal.OGR_G_ExportToGML, [c_void_p], str_result=True) get_wkbsize = int_output(lgdal.OGR_G_WkbSize, [c_void_p]) # Geometry spatial-reference related routines. assign_srs = void_output(lgdal.OGR_G_AssignSpatialReference, [c_void_p, c_void_p], errcheck=False) get_geom_srs = srs_output(lgdal.OGR_G_GetSpatialReference, [c_void_p]) # Geometry properties get_area = double_output(lgdal.OGR_G_GetArea, [c_void_p]) get_centroid = void_output(lgdal.OGR_G_Centroid, [c_void_p, c_void_p]) get_dims = int_output(lgdal.OGR_G_GetDimension, [c_void_p]) get_coord_dim = int_output(lgdal.OGR_G_GetCoordinateDimension, [c_void_p]) set_coord_dim = void_output(lgdal.OGR_G_SetCoordinateDimension, [c_void_p, c_int], errcheck=False) get_geom_count = int_output(lgdal.OGR_G_GetGeometryCount, [c_void_p]) get_geom_name = const_string_output(lgdal.OGR_G_GetGeometryName, [c_void_p]) get_geom_type = int_output(lgdal.OGR_G_GetGeometryType, [c_void_p]) get_point_count = int_output(lgdal.OGR_G_GetPointCount, [c_void_p]) get_point = void_output(lgdal.OGR_G_GetPoint, [c_void_p, c_int, POINTER(c_double), POINTER(c_double), POINTER(c_double)], errcheck=False) geom_close_rings = void_output(lgdal.OGR_G_CloseRings, [c_void_p], errcheck=False) # Topology routines. ogr_contains = topology_func(lgdal.OGR_G_Contains) ogr_crosses = topology_func(lgdal.OGR_G_Crosses)
def units_func(f):
"""
Creates a ctypes function prototype for OSR units functions, e.g.,
OSRGetAngularUnits, OSRGetLinearUnits.
"""
return double_output(f, [c_void_p, POINTER(c_char_p)], strarg=True)
def srs_double(f):
"""
Creates a function prototype for the OSR routines that take
the OSRSpatialReference object and
"""
return double_output(f, [c_void_p, POINTER(c_int)], errcheck=True)
set_spatial_filter = void_output(lgdal.OGR_L_SetSpatialFilter, [c_void_p, c_void_p], errcheck=False) set_spatial_filter_rect = void_output(lgdal.OGR_L_SetSpatialFilterRect, [c_void_p, c_double, c_double, c_double, c_double], errcheck=False) ### Feature Definition Routines ### get_fd_geom_type = int_output(lgdal.OGR_FD_GetGeomType, [c_void_p]) get_fd_name = const_string_output(lgdal.OGR_FD_GetName, [c_void_p]) get_feat_name = const_string_output(lgdal.OGR_FD_GetName, [c_void_p]) get_field_count = int_output(lgdal.OGR_FD_GetFieldCount, [c_void_p]) get_field_defn = voidptr_output(lgdal.OGR_FD_GetFieldDefn, [c_void_p, c_int]) ### Feature Routines ### clone_feature = voidptr_output(lgdal.OGR_F_Clone, [c_void_p]) destroy_feature = void_output(lgdal.OGR_F_Destroy, [c_void_p], errcheck=False) feature_equal = int_output(lgdal.OGR_F_Equal, [c_void_p, c_void_p]) get_feat_geom_ref = geom_output(lgdal.OGR_F_GetGeometryRef, [c_void_p]) get_feat_field_count = int_output(lgdal.OGR_F_GetFieldCount, [c_void_p]) get_feat_field_defn = voidptr_output(lgdal.OGR_F_GetFieldDefnRef, [c_void_p, c_int]) get_fid = int_output(lgdal.OGR_F_GetFID, [c_void_p]) get_field_as_datetime = int_output(lgdal.OGR_F_GetFieldAsDateTime, [c_void_p, c_int, c_int_p, c_int_p, c_int_p, c_int_p, c_int_p, c_int_p]) get_field_as_double = double_output(lgdal.OGR_F_GetFieldAsDouble, [c_void_p, c_int]) get_field_as_integer = int_output(lgdal.OGR_F_GetFieldAsInteger, [c_void_p, c_int]) get_field_as_string = const_string_output(lgdal.OGR_F_GetFieldAsString, [c_void_p, c_int]) get_field_index = int_output(lgdal.OGR_F_GetFieldIndex, [c_void_p, c_char_p]) ### Field Routines ### get_field_name = const_string_output(lgdal.OGR_Fld_GetNameRef, [c_void_p]) get_field_precision = int_output(lgdal.OGR_Fld_GetPrecision, [c_void_p]) get_field_type = int_output(lgdal.OGR_Fld_GetType, [c_void_p]) get_field_type_name = const_string_output(lgdal.OGR_GetFieldTypeName, [c_int]) get_field_width = int_output(lgdal.OGR_Fld_GetWidth, [c_void_p])
