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) 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) # Creation & destruction. clone_srs = srs_output(std_call('OSRClone'), [c_void_p]) new_srs = srs_output(std_call('OSRNewSpatialReference'), [c_char_p]) release_srs = void_output(lgdal.OSRRelease, [c_void_p], errcheck=False) destroy_srs = void_output(std_call('OSRDestroySpatialReference'), [c_void_p], errcheck=False) srs_validate = void_output(lgdal.OSRValidate, [c_void_p]) # Getting the semi_major, semi_minor, and flattening functions. semi_major = srs_double(lgdal.OSRGetSemiMajor) semi_minor = srs_double(lgdal.OSRGetSemiMinor) invflattening = srs_double(lgdal.OSRGetInvFlattening) # WKT, PROJ, EPSG, XML importation routines. from_wkt = void_output(lgdal.OSRImportFromWkt, [c_void_p, POINTER(c_char_p)]) from_proj = void_output(lgdal.OSRImportFromProj4, [c_void_p, c_char_p]) from_epsg = void_output(std_call('OSRImportFromEPSG'), [c_void_p, c_int]) from_xml = void_output(lgdal.OSRImportFromXML, [c_void_p, c_char_p]) from_user_input = void_output(std_call('OSRSetFromUserInput'), [c_void_p, c_char_p])
# Geometry creation routines. from_wkb = geom_output(lgdal.OGR_G_CreateFromWkb, [c_char_p, c_void_p, POINTER(c_void_p), c_int], offset=-2) from_wkt = geom_output(lgdal.OGR_G_CreateFromWkt, [POINTER(c_char_p), c_void_p, POINTER(c_void_p)], offset=-1) create_geom = geom_output(lgdal.OGR_G_CreateGeometry, [c_int]) clone_geom = geom_output(lgdal.OGR_G_Clone, [c_void_p]) get_geom_ref = geom_output(lgdal.OGR_G_GetGeometryRef, [c_void_p, c_int]) get_boundary = geom_output(lgdal.OGR_G_GetBoundary, [c_void_p]) geom_convex_hull = geom_output(lgdal.OGR_G_ConvexHull, [c_void_p]) geom_diff = geom_output(lgdal.OGR_G_Difference, [c_void_p, c_void_p]) geom_intersection = geom_output(lgdal.OGR_G_Intersection, [c_void_p, c_void_p]) geom_sym_diff = geom_output(lgdal.OGR_G_SymmetricDifference, [c_void_p, c_void_p]) geom_union = geom_output(lgdal.OGR_G_Union, [c_void_p, c_void_p]) # Geometry modification routines. add_geom = void_output(lgdal.OGR_G_AddGeometry, [c_void_p, c_void_p]) import_wkt = void_output(lgdal.OGR_G_ImportFromWkt, [c_void_p, POINTER(c_char_p)]) # 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])
""" This module houses the ctypes function prototypes for OGR DataSource related data structures. OGR_Dr_*, OGR_DS_*, OGR_L_*, OGR_F_*, OGR_Fld_* routines are relevant here. """ from ctypes import c_char_p, c_double, c_int, c_long, c_void_p, POINTER from djangocg.contrib.gis.gdal.envelope import OGREnvelope from djangocg.contrib.gis.gdal.libgdal import lgdal from djangocg.contrib.gis.gdal.prototypes.generation import (const_string_output, double_output, geom_output, int_output, srs_output, void_output, voidptr_output) c_int_p = POINTER(c_int) # shortcut type ### Driver Routines ### register_all = void_output(lgdal.OGRRegisterAll, [], errcheck=False) cleanup_all = void_output(lgdal.OGRCleanupAll, [], errcheck=False) get_driver = voidptr_output(lgdal.OGRGetDriver, [c_int]) get_driver_by_name = voidptr_output(lgdal.OGRGetDriverByName, [c_char_p]) get_driver_count = int_output(lgdal.OGRGetDriverCount, []) get_driver_name = const_string_output(lgdal.OGR_Dr_GetName, [c_void_p]) ### DataSource ### open_ds = voidptr_output(lgdal.OGROpen, [c_char_p, c_int, POINTER(c_void_p)]) destroy_ds = void_output(lgdal.OGR_DS_Destroy, [c_void_p], errcheck=False) release_ds = void_output(lgdal.OGRReleaseDataSource, [c_void_p]) get_ds_name = const_string_output(lgdal.OGR_DS_GetName, [c_void_p]) get_layer = voidptr_output(lgdal.OGR_DS_GetLayer, [c_void_p, c_int]) get_layer_by_name = voidptr_output(lgdal.OGR_DS_GetLayerByName, [c_void_p, c_char_p]) get_layer_count = int_output(lgdal.OGR_DS_GetLayerCount, [c_void_p]) ### Layer Routines ###