def fromfile(file_name):
"""
Given a string file name, returns a GEOSGeometry. The file may contain WKB,
WKT, or HEX.
"""
fh = open(file_name, 'rb')
buf = fh.read()
fh.close()
if wkt_regex.match(buf) or hex_regex.match(buf):
return GEOSGeometry(buf)
else:
return GEOSGeometry(buffer(buf))
def get_interior_ring(self, ring_i):
"""
Gets the interior ring at the specified index, 0 is for the first
interior ring, not the exterior ring.
"""
self._checkindex(ring_i + 1)
return GEOSGeometry(geom_clone(get_intring(self.ptr, ring_i)),
srid=self.srid)
def area(input):
"Returns the area of the geometry (given in HEXEWKB)."
return GEOSGeometry(input).area
def centroid(input):
"Returns the centroid of the geometry (given in HEXEWKB)."
return GEOSGeometry(input).centroid.wkt
def wkt_to_hex(wkt):
"Converts WKT into HEXEWKB."
return GEOSGeometry(wkt).hex
def hex_to_wkt(hex):
"Converts HEXEWKB into WKT."
return GEOSGeometry(hex).wkt
def fromstr(wkt_or_hex, **kwargs):
"Given a string value (wkt or hex), returns a GEOSGeometry object."
return GEOSGeometry(wkt_or_hex, **kwargs)
def get_ext_ring(self):
"Gets the exterior ring of the Polygon."
return GEOSGeometry(geom_clone(get_extring(self.ptr)), srid=self.srid)
def __getitem__(self, index):
"Returns the Geometry from this Collection at the given index (0-based)."
# Checking the index and returning the corresponding GEOS geometry.
self._checkindex(index)
return GEOSGeometry(geom_clone(get_geomn(self.ptr, index)),
srid=self.srid)