def get_lat_lon(self, event):
x = event.xdata
wpm = self.waypoints_model
vertices = self.pathpatch.get_path().vertices
vertices = np.ndarray.tolist(vertices)
for index, vertex in enumerate(vertices):
vertices[index].append(datetime.datetime(2012, 7, 1, 10, 30))
best_index = 1
# if x axis has increasing coordinates
if vertices[-1][0] > vertices[0][0]:
for index, vertex in enumerate(vertices):
if x >= vertex[0]:
best_index = index + 1
# if x axis has decreasing coordinates
else:
for index, vertex in enumerate(vertices):
if x <= vertex[0]:
best_index = index + 1
# number of subcoordinates is determined by difference in x coordinates
number_of_intermediate_points = math.floor(vertices[best_index][0] -
vertices[best_index - 1][0])
intermediate_vertices_list = path_points(
[vertices[best_index - 1], vertices[best_index]],
number_of_intermediate_points)
wp1Array = [
wpm.waypoint_data(best_index - 1).lat,
wpm.waypoint_data(best_index - 1).lon,
datetime.datetime(2012, 7, 1, 10, 30)
]
wp2Array = [
wpm.waypoint_data(best_index).lat,
wpm.waypoint_data(best_index).lon,
datetime.datetime(2012, 7, 1, 10, 30)
]
intermediate_waypoints_list = latlon_points(
wp1Array,
wp2Array,
number_of_intermediate_points,
connection="greatcircle")
# best_index1 is the best index among the intermediate coordinates to fit the hovered point
# if x axis has increasing coordinates
best_index1 = 1
if vertices[-1][0] > vertices[0][0]:
for index, vertex in enumerate(intermediate_vertices_list[0]):
if x >= vertex:
best_index1 = index + 1
# if x axis has decreasing coordinates
else:
for index, vertex in enumerate(intermediate_vertices_list[0]):
if x <= vertex:
best_index1 = index + 1
# depends if best_index1 or best_index1 - 1 on closeness to left or right neighbourhood
return [
intermediate_waypoints_list[0][best_index1 - 1],
intermediate_waypoints_list[1][best_index1 - 1]
], best_index
def intermediate_points(self, numpoints=101, connection="greatcircle"):
"""Compute intermediate points between the waypoints.
See mss_util.path_points() for additional arguments.
Returns lats, lons.
"""
path = [[wp.lat, wp.lon, wp.utc_time] for wp in self.waypoints]
return utils.path_points(path,
numpoints=numpoints,
connection=connection)
def test_pathpoints():
p1 = [0, 0, datetime.datetime(2012, 7, 1, 10, 30)]
p2 = [10, 10, datetime.datetime(2012, 7, 1, 10, 40)]
p3 = [-20, 20, datetime.datetime(2012, 7, 1, 10, 40)]
result = utils.path_points([p1, p1], 100, "linear")
assert all(len(_x) == 100 for _x in result)
assert all(result[i][0] == p1[i] for i in range(3))
assert all(result[i][-1] == p1[i] for i in range(3))
result = utils.path_points([p1, p1], 100, "greatcircle")
assert all(len(_x) == 100 for _x in result)
assert all(result[i][0] == p1[i] for i in range(3))
assert all(result[i][-1] == p1[i] for i in range(3))
result = utils.path_points([p1, p2], 200, "linear")
assert all(len(_x) == 200 for _x in result)
assert all(result[i][0] == p1[i] for i in range(3))
assert all(result[i][-1] == p2[i] for i in range(3))
result = utils.path_points([p1, p2], 200, "greatcircle")
assert all(len(_x) == 200 for _x in result)
assert all(result[i][0] == p1[i] for i in range(3))
assert all(result[i][-1] == p2[i] for i in range(3))
result = utils.path_points([p1, p2, p3], 100, "linear")
assert all(len(_x) == 100 for _x in result)
assert all(result[i][0] == p1[i] for i in range(3))
assert all(result[i][-1] == p3[i] for i in range(3))
result = utils.path_points([p1, p2, p3], 100, "greatcircle")
assert all(len(_x) == 100 for _x in result)
assert all(result[i][0] == p1[i] for i in range(3))
assert all(result[i][-1] == p3[i] for i in range(3))
def _set_vertical_section_path(self,
vsec_path,
vsec_numpoints=101,
vsec_path_connection='linear'):
"""
"""
logging.debug("computing %i interpolation points, connection: %s",
vsec_numpoints, vsec_path_connection)
now = datetime.now()
self.lats, self.lons, _ = utils.path_points(
[(_x, _y, now) for _x, _y in vsec_path],
numpoints=vsec_numpoints,
connection=vsec_path_connection)
self.vsec_path = vsec_path
self.vsec_numpoints = vsec_numpoints
self.vsec_path_connection = vsec_path_connection
def _set_linear_section_path(self,
lsec_path,
lsec_numpoints=101,
lsec_path_connection='linear'):
"""
"""
logging.debug("computing %i interpolation points, connection: %s",
lsec_numpoints, lsec_path_connection)
now = datetime.now()
self.lats, self.lons, self.alts, _ = utils.path_points(
[(_x, _y, _z, now) for _x, _y, _z in lsec_path],
numpoints=lsec_numpoints,
connection=lsec_path_connection,
contains_altitude=True)
self.lsec_path = lsec_path
self.lsec_numpoints = lsec_numpoints
self.lsec_path_connection = lsec_path_connection