def testS2PolylineRegion(self):
polyline = s2.S2Polyline()
polyline.InitFromS2LatLngs([
s2.S2LatLng.FromDegrees(0.0, 0.0),
s2.S2LatLng.FromDegrees(1.0, 1.0)
])
# Contains(S2Point) always return false.
self.assertFalse(
polyline.Contains(s2.S2LatLng.FromDegrees(0.0, 0.0).ToPoint()))
self.assertFalse(
polyline.Contains(s2.S2Cell(s2.S2LatLng.FromDegrees(0.0, 0.0))))
self.assertTrue(
polyline.MayIntersect(s2.S2Cell(s2.S2LatLng.FromDegrees(0.0,
0.0))))
self.assertFalse(
polyline.MayIntersect(s2.S2Cell(s2.S2LatLng.FromDegrees(3.0,
4.0))))
cap_bound = polyline.GetCapBound()
self.assertTrue(
cap_bound.Contains(s2.S2LatLng.FromDegrees(0.0, 0.0).ToPoint()))
self.assertFalse(
cap_bound.Contains(s2.S2LatLng.FromDegrees(2.0, 2.0).ToPoint()))
rect_bound = polyline.GetRectBound()
self.assertTrue(
rect_bound.Contains(s2.S2LatLng.FromDegrees(0.0, 0.0).ToPoint()))
self.assertFalse(
rect_bound.Contains(s2.S2LatLng.FromDegrees(2.0, 2.0).ToPoint()))
def testS2PointsCanBeNormalized(self):
line = s2.S2Polyline()
line.InitFromS2LatLngs([
s2.S2LatLng.FromDegrees(37.794484, -122.394871),
s2.S2LatLng.FromDegrees(37.762699, -122.435158)
])
self.assertNotAlmostEqual(line.GetCentroid().Norm(), 1.0)
self.assertAlmostEqual(line.GetCentroid().Normalize().Norm(), 1.0)
def testS2PolylineInitFromS2Points(self):
e7_10deg = 0x5f5e100
list_points = []
for lat, lng in [(0, 0), (0, e7_10deg), (e7_10deg, e7_10deg)]:
list_points.append(s2.S2LatLng.FromE7(lat, lng).ToPoint())
line = s2.S2Polyline()
line.InitFromS2Points(list_points)
self.assertAlmostEqual(20.0, line.GetLength().degrees())
def testS2PolygonIntersectsWithPolyline(self):
london = s2.S2LatLng.FromDegrees(51.5001525, -0.1262355)
polygon = s2.S2Polygon(s2.S2Cell(s2.S2CellId(london).parent(15)))
line = s2.S2Polyline()
line.InitFromS2LatLngs([s2.S2LatLng.FromDegrees(51.5, -0.128),
s2.S2LatLng.FromDegrees(51.5, -0.125)])
intersections = polygon.IntersectWithPolyline(line)
self.assertEqual(1, len(intersections))
def testS2PolylineUsesValueEquality(self):
self.assertEqual(s2.S2Polyline(), s2.S2Polyline())
