def draw_sensors(self, maze_walls, beacons):
landmarks = []
for beacon in beacons:
collide = False
point = Point(beacon[0])
line = LineString([((self.position[0]), (self.position[1])), beacon[0]])
distance = point.hausdorff_distance(line)
if distance < self.max_distance_sensor:
# TODO collision check
for wall in maze_walls:
line_wall = LineString([(wall[0][0], wall[0][1]),
(wall[1][0], wall[1][1])])
if line.intersects(line_wall):
if not point.intersects(line_wall):
collide = True
if not collide:
pygame.draw.line(self.screen, data.COLOR_SENSOR_LINE,
(self.round(self.position[0]), (self.round_Y(self.position[1]))),
(self.round_point(beacon[0])), 2)
landmarks.append([line, distance, beacon])
return landmarks
def test_hausdorff_distance(self):
point = Point(1, 1)
line = LineString([(2, 0), (2, 4), (3, 4)])
distance = point.hausdorff_distance(line)
self.assertEqual(distance, point.distance(Point(3, 4)))
self.__geo_interface__ = d
thing = GeoThing({"type": "Point", "coordinates": (0.0, 0.0)})
m = mapping(thing)
print("", m['type'])
print(m['coordinates'])
print("---------------LineStriing-----------------")
line = LineString([(2, 0), (2, 2), (0, 2)])
# area 面积
print(line.area)
# length 长度
print(line.length)
# hausdorff_distance 豪斯多夫 距离
print(point.hausdorff_distance(line))
print(point.distance(Point(2, 2)))
print(list(line.coords))
print(line.coords[0])
print(line.coords[1:])
for x, y in line.coords:
print("x = {}，y = {} ".format(x, y))
# == 和 equals 的区别
a = LineString([(0, 0), (1, 1)])
b = LineString([(0, 0), (0.5, 0.5), (1, 1)])
c = LineString([(0, 0), (0, 0), (1, 1)])
print(a.equals(b))
print(a == b)
print(b.equals(c))
print(b == c)
# contains 包含于， within 被包含于