def test_bounds(self):
# bounds
bbox.validate_bbox((-180, -90, 180, 90))
bbox.validate_bbox((180, -90, 180, 90))
self.assertRaises(AssertionError, bbox.validate_bbox,
(-180.1, -90, 180, 90))
self.assertRaises(AssertionError, bbox.validate_bbox,
(-180, -90.1, 180, 90))
self.assertRaises(AssertionError, bbox.validate_bbox,
(-180, -90, 180.1, 90))
self.assertRaises(AssertionError, bbox.validate_bbox,
(-180, -90, 180, 90.1))
# left < right, bottom < top
self.assertRaises(AssertionError, bbox.validate_bbox, (180, 0, 0, 0))
self.assertRaises(AssertionError, bbox.validate_bbox, (0, 0, -180, 0))
self.assertRaises(AssertionError, bbox.validate_bbox, (0, 90, 0, 0))
self.assertRaises(AssertionError, bbox.validate_bbox, (0, 0, 0, -90))
def get_bbox_tiles(self, bbox):
left, bottom, right, top = validate_bbox(bbox)
min_x = int(math.floor(left))
max_x = int(math.ceil(right))
min_y = int(math.floor(bottom))
max_y = int(math.ceil(top))
expect = (max_x - min_x + 1) * (max_y - min_y + 1)
tiles = set()
for x in range(min_x, max_x):
for y in range(min_y, max_y):
tiles.add((0, x, y))
return tiles
def get_bbox_tiles(self, bbox):
left, bottom, right, top = validate_bbox(bbox)
ybound = 85.0511
if bottom <= -ybound:
bottom = -ybound
if top > ybound:
top = ybound
if right >= 180:
right = 179.999
size = 2**self.zoom
xt = lambda x: int((x + 180.0) / 360.0 * size)
yt = lambda y: int((1.0 - math.log(
math.tan(math.radians(y)) +
(1 / math.cos(math.radians(y)))) / math.pi) / 2.0 * size)
tiles = []
for x in range(xt(left), xt(right) + 1):
for y in range(yt(top), yt(bottom) + 1):
tiles.append([self.zoom, x, y])
return tiles
def test_returns_array(self):
self.assertEquals(bbox.validate_bbox([1, 2, 3, 4]),
[1.0, 2.0, 3.0, 4.0])