| import unittest |
| from django.contrib.gis.gdal import OGRGeometry, OGRGeomType, \ |
| OGRException, OGRIndexError, SpatialReference, CoordTransform, \ |
| gdal_version |
| from django.contrib.gis.tests.geometries import * |
| |
| class OGRGeomTest(unittest.TestCase): |
| "This tests the OGR Geometry." |
| |
| def test00_geomtype(self): |
| "Testing OGRGeomType object." |
| |
| # OGRGeomType should initialize on all these inputs. |
| try: |
| g = OGRGeomType(1) |
| g = OGRGeomType(7) |
| g = OGRGeomType('point') |
| g = OGRGeomType('GeometrycollectioN') |
| g = OGRGeomType('LINearrING') |
| g = OGRGeomType('Unknown') |
| except: |
| self.fail('Could not create an OGRGeomType object!') |
| |
| # Should throw TypeError on this input |
| self.assertRaises(TypeError, OGRGeomType.__init__, 23) |
| self.assertRaises(TypeError, OGRGeomType.__init__, 'fooD') |
| self.assertRaises(TypeError, OGRGeomType.__init__, 9) |
| |
| # Equivalence can take strings, ints, and other OGRGeomTypes |
| self.assertEqual(True, OGRGeomType(1) == OGRGeomType(1)) |
| self.assertEqual(True, OGRGeomType(7) == 'GeometryCollection') |
| self.assertEqual(True, OGRGeomType('point') == 'POINT') |
| self.assertEqual(False, OGRGeomType('point') == 2) |
| self.assertEqual(True, OGRGeomType('unknown') == 0) |
| self.assertEqual(True, OGRGeomType(6) == 'MULtiPolyGON') |
| self.assertEqual(False, OGRGeomType(1) != OGRGeomType('point')) |
| self.assertEqual(True, OGRGeomType('POINT') != OGRGeomType(6)) |
| |
| # Testing the Django field name equivalent property. |
| self.assertEqual('PointField', OGRGeomType('Point').django) |
| self.assertEqual(None, OGRGeomType('Unknown').django) |
| self.assertEqual(None, OGRGeomType('none').django) |
| |
| def test01a_wkt(self): |
| "Testing WKT output." |
| for g in wkt_out: |
| geom = OGRGeometry(g.wkt) |
| self.assertEqual(g.wkt, geom.wkt) |
| |
| def test01b_gml(self): |
| "Testing GML output." |
| for g in wkt_out: |
| geom = OGRGeometry(g.wkt) |
| self.assertEqual(g.gml, geom.gml) |
| |
| def test01c_hex(self): |
| "Testing HEX input/output." |
| for g in hex_wkt: |
| geom1 = OGRGeometry(g.wkt) |
| self.assertEqual(g.hex, geom1.hex) |
| # Constructing w/HEX |
| geom2 = OGRGeometry(g.hex) |
| self.assertEqual(geom1, geom2) |
| |
| def test01d_wkb(self): |
| "Testing WKB input/output." |
| from binascii import b2a_hex |
| for g in hex_wkt: |
| geom1 = OGRGeometry(g.wkt) |
| wkb = geom1.wkb |
| self.assertEqual(b2a_hex(wkb).upper(), g.hex) |
| # Constructing w/WKB. |
| geom2 = OGRGeometry(wkb) |
| self.assertEqual(geom1, geom2) |
| |
| def test01e_json(self): |
| "Testing GeoJSON input/output." |
| from django.contrib.gis.gdal.prototypes.geom import GEOJSON |
| if not GEOJSON: return |
| for g in json_geoms: |
| geom = OGRGeometry(g.wkt) |
| self.assertEqual(g.json, geom.json) |
| self.assertEqual(g.json, geom.geojson) |
| self.assertEqual(OGRGeometry(g.wkt), OGRGeometry(geom.json)) |
| |
| def test02_points(self): |
| "Testing Point objects." |
| |
| prev = OGRGeometry('POINT(0 0)') |
| for p in points: |
| if not hasattr(p, 'z'): # No 3D |
| pnt = OGRGeometry(p.wkt) |
| self.assertEqual(1, pnt.geom_type) |
| self.assertEqual('POINT', pnt.geom_name) |
| self.assertEqual(p.x, pnt.x) |
| self.assertEqual(p.y, pnt.y) |
| self.assertEqual((p.x, p.y), pnt.tuple) |
| |
| def test03_multipoints(self): |
| "Testing MultiPoint objects." |
| |
| for mp in multipoints: |
| mgeom1 = OGRGeometry(mp.wkt) # First one from WKT |
| self.assertEqual(4, mgeom1.geom_type) |
| self.assertEqual('MULTIPOINT', mgeom1.geom_name) |
| mgeom2 = OGRGeometry('MULTIPOINT') # Creating empty multipoint |
| mgeom3 = OGRGeometry('MULTIPOINT') |
| for g in mgeom1: |
| mgeom2.add(g) # adding each point from the multipoints |
| mgeom3.add(g.wkt) # should take WKT as well |
| self.assertEqual(mgeom1, mgeom2) # they should equal |
| self.assertEqual(mgeom1, mgeom3) |
| self.assertEqual(mp.points, mgeom2.tuple) |
| self.assertEqual(mp.n_p, mgeom2.point_count) |
| |
| def test04_linestring(self): |
| "Testing LineString objects." |
| prev = OGRGeometry('POINT(0 0)') |
| for ls in linestrings: |
| linestr = OGRGeometry(ls.wkt) |
| self.assertEqual(2, linestr.geom_type) |
| self.assertEqual('LINESTRING', linestr.geom_name) |
| self.assertEqual(ls.n_p, linestr.point_count) |
| self.assertEqual(ls.tup, linestr.tuple) |
| self.assertEqual(True, linestr == OGRGeometry(ls.wkt)) |
| self.assertEqual(True, linestr != prev) |
| self.assertRaises(OGRIndexError, linestr.__getitem__, len(linestr)) |
| prev = linestr |
| |
| # Testing the x, y properties. |
| x = [tmpx for tmpx, tmpy in ls.tup] |
| y = [tmpy for tmpx, tmpy in ls.tup] |
| self.assertEqual(x, linestr.x) |
| self.assertEqual(y, linestr.y) |
| |
| def test05_multilinestring(self): |
| "Testing MultiLineString objects." |
| prev = OGRGeometry('POINT(0 0)') |
| for mls in multilinestrings: |
| mlinestr = OGRGeometry(mls.wkt) |
| self.assertEqual(5, mlinestr.geom_type) |
| self.assertEqual('MULTILINESTRING', mlinestr.geom_name) |
| self.assertEqual(mls.n_p, mlinestr.point_count) |
| self.assertEqual(mls.tup, mlinestr.tuple) |
| self.assertEqual(True, mlinestr == OGRGeometry(mls.wkt)) |
| self.assertEqual(True, mlinestr != prev) |
| prev = mlinestr |
| for ls in mlinestr: |
| self.assertEqual(2, ls.geom_type) |
| self.assertEqual('LINESTRING', ls.geom_name) |
| self.assertRaises(OGRIndexError, mlinestr.__getitem__, len(mlinestr)) |
| |
| def test06_linearring(self): |
| "Testing LinearRing objects." |
| prev = OGRGeometry('POINT(0 0)') |
| for rr in linearrings: |
| lr = OGRGeometry(rr.wkt) |
| #self.assertEqual(101, lr.geom_type.num) |
| self.assertEqual('LINEARRING', lr.geom_name) |
| self.assertEqual(rr.n_p, len(lr)) |
| self.assertEqual(True, lr == OGRGeometry(rr.wkt)) |
| self.assertEqual(True, lr != prev) |
| prev = lr |
| |
| def test07a_polygons(self): |
| "Testing Polygon objects." |
| prev = OGRGeometry('POINT(0 0)') |
| for p in polygons: |
| poly = OGRGeometry(p.wkt) |
| self.assertEqual(3, poly.geom_type) |
| self.assertEqual('POLYGON', poly.geom_name) |
| self.assertEqual(p.n_p, poly.point_count) |
| self.assertEqual(p.n_i + 1, len(poly)) |
| |
| # Testing area & centroid. |
| self.assertAlmostEqual(p.area, poly.area, 9) |
| x, y = poly.centroid.tuple |
| self.assertAlmostEqual(p.centroid[0], x, 9) |
| self.assertAlmostEqual(p.centroid[1], y, 9) |
| |
| # Testing equivalence |
| self.assertEqual(True, poly == OGRGeometry(p.wkt)) |
| self.assertEqual(True, poly != prev) |
| |
| if p.ext_ring_cs: |
| ring = poly[0] |
| self.assertEqual(p.ext_ring_cs, ring.tuple) |
| self.assertEqual(p.ext_ring_cs, poly[0].tuple) |
| self.assertEqual(len(p.ext_ring_cs), ring.point_count) |
| |
| for r in poly: |
| self.assertEqual('LINEARRING', r.geom_name) |
| |
| def test07b_closepolygons(self): |
| "Testing closing Polygon objects." |
| # Both rings in this geometry are not closed. |
| poly = OGRGeometry('POLYGON((0 0, 5 0, 5 5, 0 5), (1 1, 2 1, 2 2, 2 1))') |
| self.assertEqual(8, poly.point_count) |
| print "\nBEGIN - expecting IllegalArgumentException; safe to ignore.\n" |
| try: |
| c = poly.centroid |
| except OGRException: |
| # Should raise an OGR exception, rings are not closed |
| pass |
| else: |
| self.fail('Should have raised an OGRException!') |
| print "\nEND - expecting IllegalArgumentException; safe to ignore.\n" |
| |
| # Closing the rings -- doesn't work on GDAL versions 1.4.1 and below: |
| # http://trac.osgeo.org/gdal/ticket/1673 |
| major, minor1, minor2 = gdal_version().split('.') |
| if major == '1': |
| iminor1 = int(minor1) |
| if iminor1 < 4 or (iminor1 == 4 and minor2.startswith('1')): return |
| poly.close_rings() |
| self.assertEqual(10, poly.point_count) # Two closing points should've been added |
| self.assertEqual(OGRGeometry('POINT(2.5 2.5)'), poly.centroid) |
| |
| def test08_multipolygons(self): |
| "Testing MultiPolygon objects." |
| prev = OGRGeometry('POINT(0 0)') |
| for mp in multipolygons: |
| mpoly = OGRGeometry(mp.wkt) |
| self.assertEqual(6, mpoly.geom_type) |
| self.assertEqual('MULTIPOLYGON', mpoly.geom_name) |
| if mp.valid: |
| self.assertEqual(mp.n_p, mpoly.point_count) |
| self.assertEqual(mp.num_geom, len(mpoly)) |
| self.assertRaises(OGRIndexError, mpoly.__getitem__, len(mpoly)) |
| for p in mpoly: |
| self.assertEqual('POLYGON', p.geom_name) |
| self.assertEqual(3, p.geom_type) |
| self.assertEqual(mpoly.wkt, OGRGeometry(mp.wkt).wkt) |
| |
| def test09a_srs(self): |
| "Testing OGR Geometries with Spatial Reference objects." |
| for mp in multipolygons: |
| # Creating a geometry w/spatial reference |
| sr = SpatialReference('WGS84') |
| mpoly = OGRGeometry(mp.wkt, sr) |
| self.assertEqual(sr.wkt, mpoly.srs.wkt) |
| |
| # Ensuring that SRS is propagated to clones. |
| klone = mpoly.clone() |
| self.assertEqual(sr.wkt, klone.srs.wkt) |
| |
| # Ensuring all children geometries (polygons and their rings) all |
| # return the assigned spatial reference as well. |
| for poly in mpoly: |
| self.assertEqual(sr.wkt, poly.srs.wkt) |
| for ring in poly: |
| self.assertEqual(sr.wkt, ring.srs.wkt) |
| |
| # Ensuring SRS propagate in topological ops. |
| a, b = topology_geoms[0] |
| a, b = OGRGeometry(a.wkt, sr), OGRGeometry(b.wkt, sr) |
| diff = a.difference(b) |
| union = a.union(b) |
| self.assertEqual(sr.wkt, diff.srs.wkt) |
| self.assertEqual(sr.srid, union.srs.srid) |
| |
| # Instantiating w/an integer SRID |
| mpoly = OGRGeometry(mp.wkt, 4326) |
| self.assertEqual(4326, mpoly.srid) |
| mpoly.srs = SpatialReference(4269) |
| self.assertEqual(4269, mpoly.srid) |
| self.assertEqual('NAD83', mpoly.srs.name) |
| |
| # Incrementing through the multipolyogn after the spatial reference |
| # has been re-assigned. |
| for poly in mpoly: |
| self.assertEqual(mpoly.srs.wkt, poly.srs.wkt) |
| poly.srs = 32140 |
| for ring in poly: |
| # Changing each ring in the polygon |
| self.assertEqual(32140, ring.srs.srid) |
| self.assertEqual('NAD83 / Texas South Central', ring.srs.name) |
| ring.srs = str(SpatialReference(4326)) # back to WGS84 |
| self.assertEqual(4326, ring.srs.srid) |
| |
| # Using the `srid` property. |
| ring.srid = 4322 |
| self.assertEqual('WGS 72', ring.srs.name) |
| self.assertEqual(4322, ring.srid) |
| |
| def test09b_srs_transform(self): |
| "Testing transform()." |
| orig = OGRGeometry('POINT (-104.609 38.255)', 4326) |
| trans = OGRGeometry('POINT (992385.4472045 481455.4944650)', 2774) |
| |
| # Using an srid, a SpatialReference object, and a CoordTransform object |
| # or 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) |
| |
| # Testing use of the `clone` keyword. |
| k1 = orig.clone() |
| k2 = k1.transform(trans.srid, clone=True) |
| self.assertEqual(k1, orig) |
| self.assertNotEqual(k1, k2) |
| |
| prec = 3 |
| for p in (t1, t2, t3, k2): |
| self.assertAlmostEqual(trans.x, p.x, prec) |
| self.assertAlmostEqual(trans.y, p.y, prec) |
| |
| def test10_difference(self): |
| "Testing difference()." |
| for i in xrange(len(topology_geoms)): |
| g_tup = topology_geoms[i] |
| a = OGRGeometry(g_tup[0].wkt) |
| b = OGRGeometry(g_tup[1].wkt) |
| d1 = OGRGeometry(diff_geoms[i].wkt) |
| d2 = a.difference(b) |
| self.assertEqual(d1, d2) |
| self.assertEqual(d1, a - b) # __sub__ is difference operator |
| a -= b # testing __isub__ |
| self.assertEqual(d1, a) |
| |
| def test11_intersection(self): |
| "Testing intersects() and intersection()." |
| for i in xrange(len(topology_geoms)): |
| g_tup = topology_geoms[i] |
| a = OGRGeometry(g_tup[0].wkt) |
| b = OGRGeometry(g_tup[1].wkt) |
| i1 = OGRGeometry(intersect_geoms[i].wkt) |
| self.assertEqual(True, a.intersects(b)) |
| i2 = a.intersection(b) |
| self.assertEqual(i1, i2) |
| self.assertEqual(i1, a & b) # __and__ is intersection operator |
| a &= b # testing __iand__ |
| self.assertEqual(i1, a) |
| |
| def test12_symdifference(self): |
| "Testing sym_difference()." |
| for i in xrange(len(topology_geoms)): |
| g_tup = topology_geoms[i] |
| a = OGRGeometry(g_tup[0].wkt) |
| b = OGRGeometry(g_tup[1].wkt) |
| d1 = OGRGeometry(sdiff_geoms[i].wkt) |
| d2 = a.sym_difference(b) |
| self.assertEqual(d1, d2) |
| self.assertEqual(d1, a ^ b) # __xor__ is symmetric difference operator |
| a ^= b # testing __ixor__ |
| self.assertEqual(d1, a) |
| |
| def test13_union(self): |
| "Testing union()." |
| for i in xrange(len(topology_geoms)): |
| g_tup = topology_geoms[i] |
| a = OGRGeometry(g_tup[0].wkt) |
| b = OGRGeometry(g_tup[1].wkt) |
| u1 = OGRGeometry(union_geoms[i].wkt) |
| u2 = a.union(b) |
| self.assertEqual(u1, u2) |
| self.assertEqual(u1, a | b) # __or__ is union operator |
| a |= b # testing __ior__ |
| self.assertEqual(u1, a) |
| |
| def test14_add(self): |
| "Testing GeometryCollection.add()." |
| # Can't insert a Point into a MultiPolygon. |
| mp = OGRGeometry('MultiPolygon') |
| pnt = OGRGeometry('POINT(5 23)') |
| self.assertRaises(OGRException, mp.add, pnt) |
| |
| # GeometryCollection.add may take an OGRGeometry (if another collection |
| # of the same type all child geoms will be added individually) or WKT. |
| for mp in multipolygons: |
| mpoly = OGRGeometry(mp.wkt) |
| mp1 = OGRGeometry('MultiPolygon') |
| mp2 = OGRGeometry('MultiPolygon') |
| mp3 = OGRGeometry('MultiPolygon') |
| |
| for poly in mpoly: |
| mp1.add(poly) # Adding a geometry at a time |
| mp2.add(poly.wkt) # Adding WKT |
| mp3.add(mpoly) # Adding a MultiPolygon's entire contents at once. |
| for tmp in (mp1, mp2, mp3): self.assertEqual(mpoly, tmp) |
| |
| def test15_extent(self): |
| "Testing `extent` property." |
| # The xmin, ymin, xmax, ymax of the MultiPoint should be returned. |
| mp = OGRGeometry('MULTIPOINT(5 23, 0 0, 10 50)') |
| self.assertEqual((0.0, 0.0, 10.0, 50.0), mp.extent) |
| # Testing on the 'real world' Polygon. |
| poly = OGRGeometry(polygons[3].wkt) |
| ring = poly.shell |
| x, y = ring.x, ring.y |
| xmin, ymin = min(x), min(y) |
| xmax, ymax = max(x), max(y) |
| self.assertEqual((xmin, ymin, xmax, ymax), poly.extent) |
| |
| def suite(): |
| s = unittest.TestSuite() |
| s.addTest(unittest.makeSuite(OGRGeomTest)) |
| return s |
| |
| def run(verbosity=2): |
| unittest.TextTestRunner(verbosity=verbosity).run(suite()) |
