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Code Issues 32 Releases Wiki Activity

gis: geos: Fixed bug in transform where coordinate sequence pointer was not after transformation (and added tests). Thanks robotika.

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git-svn-id: http://code.djangoproject.com/svn/django/branches/gis@7101 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Justin Bronn 2008-02-08 17:36:43 +00:00
parent ead0dad735
commit c703452841
2 changed files with 26 additions and 5 deletions
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10
django/contrib/gis/geos/base.py
View File

@ -406,12 +406,14 @@ class GEOSGeometry(object):
wkb = str(g.wkb)
ptr = from_wkb(wkb, len(wkb))
if ptr:
# Reassigning pointer, and resetting the SRID.
# Reassigning pointer, and getting the new coordinate sequence pointer.
destroy_geom(self.ptr)
self._ptr = ptr
self.srid = g.srid
else:
pass
self._set_cs()
# Some coordinate transformations do not have an SRID associated
# with them; only set if one exists.
if g.srid: self.srid = g.srid
#### Topology Routines ####
def _topology(self, gptr):

21
django/contrib/gis/tests/test_geos.py
View File

@ -5,7 +5,7 @@ from django.contrib.gis.geos.base import HAS_GDAL
from django.contrib.gis.tests.geometries import *
if HAS_NUMPY: from numpy import array
if HAS_GDAL: from django.contrib.gis.gdal import OGRGeometry, SpatialReference
if HAS_GDAL: from django.contrib.gis.gdal import OGRGeometry, SpatialReference, CoordTransform
class GEOSTest(unittest.TestCase):
@ -673,6 +673,25 @@ class GEOSTest(unittest.TestCase):
self.assertNotEqual(poly._ptr, cpy1._ptr)
self.assertNotEqual(poly._ptr, cpy2._ptr)
def test23_transform(self):
"Testing `transform` method."
if not HAS_GDAL: return
orig = GEOSGeometry('POINT (-104.609 38.255)', 4326)
trans = GEOSGeometry('POINT (992385.4472045 481455.4944650)', 2774)
# Using a srid, a SpatialReference object, and a CoordTransform object
# for transformations.
t1, t2, t3 = orig.clone(), orig.clone(), orig.clone()
t1.transform(trans.srid)
t2.transform(SpatialReference('EPSG:2774'))
ct = CoordTransform(SpatialReference('WGS84'), SpatialReference(2774))
t3.transform(ct)
for p in (t1, t2, t3):
prec = 3
self.assertAlmostEqual(trans.x, p.x, prec)
self.assertAlmostEqual(trans.y, p.y, prec)
def suite():
s = unittest.TestSuite()
s.addTest(unittest.makeSuite(GEOSTest))