def testBoundingSphereFromPoints(self):
sphere = BoundingSphere()
self.assertEqual(len(sphere.center), 0)
self.assertEqual(sphere.radius, 0.0)
self.assertEqual(sphere.minPointX[0], float('inf'))
self.assertEqual(sphere.minPointY[1], float('inf'))
self.assertEqual(sphere.minPointZ[2], float('inf'))
self.assertEqual(sphere.maxPointX[0], float('-inf'))
self.assertEqual(sphere.maxPointY[1], float('-inf'))
self.assertEqual(sphere.maxPointZ[2], float('-inf'))
points = [[1.1, 3.2, 4.9], [3.1, 1.0, 21.4], [9.1, 3.2, 2.0],
[2.0, 4.0, 9.5]]
sphere.fromPoints(points)
self.assertNotEqual(sphere.minPointX[0], float('inf'))
self.assertNotEqual(sphere.minPointY[1], float('inf'))
self.assertNotEqual(sphere.minPointZ[2], float('inf'))
self.assertNotEqual(sphere.maxPointX[0], float('-inf'))
self.assertNotEqual(sphere.maxPointY[1], float('-inf'))
self.assertNotEqual(sphere.maxPointZ[2], float('-inf'))
for point in points:
distance = c3d.distance(sphere.center, point)
self.assertLessEqual(distance, sphere.radius)
# Point outside the sphere
pointOutside = [1000.0, 1000.0, 1000.0]
distance = c3d.distance(sphere.center, pointOutside)
self.assertGreater(distance, sphere.radius)
def testBoundingSphereAssign(self):
center = [1, 3, 12]
radius = 8
sphere = BoundingSphere(center=center, radius=radius)
self.assertEqual(sphere.center[0], 1.0)
self.assertEqual(sphere.center[1], 3.0)
self.assertEqual(sphere.center[2], 12.0)
self.assertEqual(sphere.radius, 8.0)
def testBoundingSpherePrecision(self):
x = 533
y = 383
z = 9
geodetic = GlobalGeodetic(True)
[minx, miny, maxx, maxy] = geodetic.TileBounds(x, y, z)
ter = TerrainTile(west=minx, south=miny, east=maxx, north=maxy)
ter.fromFile('tests/data/%s_%s_%s.terrain' % (z, x, y))
coords = [LLH2ECEF(*coord) for coord in ter.getVerticesCoordinates()]
sphere = BoundingSphere()
sphere.fromPoints(coords)
for coord in coords:
distance = c3d.distance(sphere.center, coord)
self.assertLessEqual(distance, sphere.radius)
def testBoundingSphereOnePoint(self):
sphere = BoundingSphere()
point = [[1.1, 3.2, 4.9]]
with self.assertRaises(Exception):
sphere.fromPoints(point)