| from ctypes import c_char |
| from django.contrib.gis.geos.libgeos import GEOM_PTR, PREPGEOM_PTR |
| from django.contrib.gis.geos.prototypes.errcheck import check_predicate |
| from django.contrib.gis.geos.prototypes.threadsafe import GEOSFunc |
| |
| # Prepared geometry constructor and destructors. |
| geos_prepare = GEOSFunc('GEOSPrepare') |
| geos_prepare.argtypes = [GEOM_PTR] |
| geos_prepare.restype = PREPGEOM_PTR |
| |
| prepared_destroy = GEOSFunc('GEOSPreparedGeom_destroy') |
| prepared_destroy.argtpes = [PREPGEOM_PTR] |
| prepared_destroy.restype = None |
| |
| # Prepared geometry binary predicate support. |
| def prepared_predicate(func): |
| func.argtypes= [PREPGEOM_PTR, GEOM_PTR] |
| func.restype = c_char |
| func.errcheck = check_predicate |
| return func |
| |
| prepared_contains = prepared_predicate(GEOSFunc('GEOSPreparedContains')) |
| prepared_contains_properly = prepared_predicate(GEOSFunc('GEOSPreparedContainsProperly')) |
| prepared_covers = prepared_predicate(GEOSFunc('GEOSPreparedCovers')) |
| prepared_intersects = prepared_predicate(GEOSFunc('GEOSPreparedIntersects')) |
