1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
|
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)
|
