| from django.contrib.gis.geos.base import GEOSBase |
| from django.contrib.gis.geos.geometry import GEOSGeometry |
| from django.contrib.gis.geos.prototypes import prepared as capi |
| |
| class PreparedGeometry(GEOSBase): |
| """ |
| A geometry that is prepared for performing certain operations. |
| At the moment this includes the contains covers, and intersects |
| operations. |
| """ |
| ptr_type = capi.PREPGEOM_PTR |
| |
| def __init__(self, geom): |
| if not isinstance(geom, GEOSGeometry): raise TypeError |
| self.ptr = capi.geos_prepare(geom.ptr) |
| |
| def __del__(self): |
| if self._ptr: capi.prepared_destroy(self._ptr) |
| |
| def contains(self, other): |
| return capi.prepared_contains(self.ptr, other.ptr) |
| |
| def contains_properly(self, other): |
| return capi.prepared_contains_properly(self.ptr, other.ptr) |
| |
| def covers(self, other): |
| return capi.prepared_covers(self.ptr, other.ptr) |
| |
| def intersects(self, other): |
| return capi.prepared_intersects(self.ptr, other.ptr) |
