def from_leaflet(lat1, lng1, lat2, lng2, cutoff, smoothing):
if request.method != "POST":
return ""
json_i = request.get_json(force=True)
if json_i is None:
return "Could not parse JSON", 500
proj = ComplexLogProjection(
LatLng(lat1, lng1),
LatLng(lat2, lng2),
math.radians(cutoff),
smoothing_function_type=parse_smoothing(smoothing))
elements = json_i['data']
ret_v = []
for e in elements:
x, y = tiling.from_leaflet_LatLng(LatLng(e['lat'], e['lng']))
xy = np.array([[x], [y]])
latlng_data = proj.invert(xy)
assert latlng_data.shape == (2, 1)
ret_element = {"lat": latlng_data[0, 0], "lng": latlng_data[1, 0]}
ret_v.append(ret_element)
response = app.response_class(response=json.dumps({"data": ret_v}),
status=200,
mimetype='application/json')
return response
def test_single_loop(self):
data = np.array([[0, 1, 0, 2], [1, 0, 3, 4]], dtype=float)
projection = ComplexLogProjection(LatLng(0, 0), LatLng(10, 10),
math.pi / 4)
center = np.array([[5], [6]], dtype=float)
projected = projection._single_forward(data.copy(), center, 1, 1)
back = projection._single_backward(projected, center, 1, 1)
np.testing.assert_almost_equal(back, data)
def test_loop(self):
projection = ComplexLogProjection(LatLng(0, 0), LatLng(10, 10),
math.pi / 4)
# only small slice where no stitching was used
data = np.array([[1, 9], [1, 9]])
res = projection(data.copy())
returned = projection.invert(res.copy())
np.testing.assert_almost_equal(returned, data)
pass
def to_leaflet(lat1, lng1, lat2, lng2, cutoff, smoothing):
if request.method != "POST":
return ""
json_i = request.get_json(force=True)
if json_i is None:
return "Could not parse JSON", 500
precision = int(request.args.get("precision", 5)) # number of digits
c1latlng = LatLng(lat1, lng1)
c2latlng = LatLng(lat2, lng2)
proj = ComplexLogProjection(
c1latlng,
c2latlng,
math.radians(cutoff),
smoothing_function_type=parse_smoothing(smoothing))
center_distance = c1latlng.distanceTo(c2latlng)
pixel_per_m = 256.0 / (156412.0)
elements = json_i['data']
ret_v = []
for e in elements:
xy = np.array([[e[0]], [e[0]]])
xy, clipping = proj(xy, calculate_clipping=True)
z = proj.getZoomLevel(xy, pixel_per_m)
latlng = tiling.to_leaflet_LatLng(xy[0, 0], xy[1, 0])
clipping = bool(clipping[0])
ret_element = [
round(latlng.lat, precision),
round(latlng.lng, precision),
round(z[0], precision), clipping
]
ret_v.append(ret_element)
z_values = list(map(lambda x: x[2], ret_v))
min_z = min(*z_values)
max_z = max(*z_values)
response = app.response_class(response=json.dumps(
{
"data": ret_v,
"min_z": min_z,
"max_z": max_z
},
check_circular=False,
indent=None),
status=200,
mimetype='application/json')
return response
def do_projection(lat1,
lng1,
lat2,
lng2,
data_source: AbstractRasterDataProvider,
pixel_width=256,
pixel_height=256,
xmin=-1,
xmax=1,
ymin=-1,
ymax=1,
cutoff=math.pi / 6,
smoothing=CosCutoffSmoothingFunction,
fileformat='png'):
with t.time("setup"):
trange = TargetSectionDescription(xmin, xmax, pixel_width, ymin, ymax,
pixel_height)
c1 = LatLng(lat1, lng1)
c2 = LatLng(lat2, lng2)
proj = ComplexLogProjection(c1,
c2,
cutoff,
smoothing_function_type=smoothing)
projector = RasterProjector(proj, data_source)
with t.time("projection"):
d = projector.project(trange)
with t.time("parse_result"):
pilim = Image.fromarray(d)
with t.time("convert_to_format"):
img_io = BytesIO()
pilim.save(img_io, fileformat)
img_io.seek(0)
return send_file(img_io, mimetype='image/' + fileformat)
def test_project_image_distances(self):
prov = get_providers()
trange = TargetSectionDescription(-math.pi * 2, math.pi * 2, 4000, -math.pi, math.pi, 2000)
#frankfurt_a_m = LatLng(50.115822, 8.702537)
angle = 30
hamburg = LatLng(53.559988,9.982358)
hamburg_elbbruecken = LatLng(53.535251,10.020135)
lueneburg = LatLng(53.245280,10.408478)
hannover = LatLng(52.370487,9.724743)
fulda = LatLng(50.527068,9.684608)
stockach = LatLng(47.847596,9.007671)
for i,to in enumerate([ hamburg_elbbruecken,lueneburg,hannover,fulda,stockach]):
projection = ComplexLogProjection(hamburg, to, math.radians(angle),
smoothing_function_type=DualCosSmoothingFunction)
projector_transparent = RasterProjector(projection, prov['transparent'])
projector_mapbox = RasterProjector(projection, prov['mapbox'])
d_trans = Image.fromarray(projector_transparent.project(trange))
d_mapbox = Image.fromarray(projector_mapbox.project(trange))
im = Image.alpha_composite(d_mapbox,d_trans)
dist = int(hamburg.distanceTo(to))
filename = get_destination("sample-distance-" + str(dist)+".jpeg")
im.convert('RGB').save(filename,optimize=True)
print("Finished " + filename + " with distance " + str(dist))
def test_vis_zoomLevel(self):
projection1 = ComplexLogProjection(LatLng(0, 0), LatLng(10, 10),
math.pi / 4)
projection2 = ComplexLogProjection(LatLng(-10, -10), LatLng(10, 10),
math.pi / 4)
projector = RasterProjector(projection1,
OSMRasterDataProvider(dummy_resolver))
grid = projector.build_grid(
TargetSectionDescription(-4, 4, 400, -2, 2, 200))
zoom = projection1.getZoomLevel(grid, 100)
import matplotlib.pyplot as plt
plt.imshow(zoom.reshape(200, 400))
plt.colorbar()
plt.show()
plt.scatter(range(400), zoom.reshape(200, 400)[10, :])
plt.show()
def test_project_dist_video(self):
prov = get_providers()
w = 2000
h = 1000
trange = TargetSectionDescription(-math.pi * 2, math.pi * 2, w, -math.pi,math.pi, h)
# frankfurt_a_m = LatLng(50.115822, 8.702537)
start = LatLng(48.783810, 9.180071)
angle = 30
t = 5
fps = 25
end = LatLng(47.652839, 9.472735) #
numsteps = 400
steps = list(reversed(list(map(lambda a:LatLng(a[0],a[1]),zip(np.linspace(end.lat,start.lat,numsteps,endpoint=False),np.linspace(end.lng,start.lng,numsteps,endpoint=False))))))
print("FPS:", fps)
with tempfile.TemporaryDirectory() as tdir:
files = []
for i,step in enumerate(steps):
distance = start.distanceTo(step)
projection = ComplexLogProjection(start, step, math.radians(angle),
smoothing_function_type=DualCosSmoothingFunction)
projector_transparent = RasterProjector(projection, prov['transparent'])
projector_mapbox = RasterProjector(projection, prov['mapbox'])
d_trans = Image.fromarray(projector_transparent.project(trange))
d_mapbox = Image.fromarray(projector_mapbox.project(trange))
im = Image.alpha_composite(d_mapbox, d_trans)
filename = "sample-ch-distance-{:012.6f}.jpeg".format(distance)
filepath = os.path.join(tdir, filename)
files.append((filepath, distance))
im.convert('RGB').save(filepath, optimize=True)
print(filepath)
import cv2
out = cv2.VideoWriter(get_destination('distances.avi'), cv2.VideoWriter_fourcc(*'MJPG'), fps, (w, h))
for filepath, distance in files + list(reversed(files)):
d = 0.01
im = cv2.imread(filepath)
text = "{:05.2f}km".format(distance)
fontscale = h / 200
linethickness = int(h / 100)
cv2.putText(im,
text,
(int(w * d), int(h * (1 - d))),
cv2.FONT_HERSHEY_SIMPLEX,
fontscale,
(255, 10, 1),
linethickness,
cv2.LINE_AA)
out.write(im)
out.release()
def project_image(self):
projection = ComplexLogProjection(LatLng(0, 0), LatLng(10, 10),
math.pi / 4)
projector = RasterProjector(projection, CosSinRasterDataProvider())
trange = TargetSectionDescription(-1, 1, 500, -1, 1, 300)
d = projector.project(trange)
import matplotlib.pyplot as plt
plt.imshow(d)
plt.show()
def test_project_ch_video(self):
prov = get_providers()
w=2000
h = 1000
trange = TargetSectionDescription(-math.pi * 2, math.pi * 2, w, -math.pi, math.pi,h)
#frankfurt_a_m = LatLng(50.115822, 8.702537)
stuttgart = LatLng(48.783810,9.180071)
num_steps = 200
fn = LatLng(47.652839, 9.472735) #
angles = np.linspace(0,44.9,num_steps).tolist()
fps = 25
print("FPS:",fps)
with tempfile.TemporaryDirectory() as tdir:
files = []
for angle in angles:
projection = ComplexLogProjection(stuttgart, fn, math.radians(angle),
smoothing_function_type=DualCosSmoothingFunction)
projector_transparent = RasterProjector(projection, prov['transparent'])
projector_mapbox = RasterProjector(projection, prov['mapbox'])
d_trans = Image.fromarray(projector_transparent.project(trange))
d_mapbox = Image.fromarray(projector_mapbox.project(trange))
im = Image.alpha_composite(d_mapbox,d_trans)
filename = "sample-ch-angle-{:05.2f}.jpeg".format(angle)
filepath = os.path.join(tdir,filename)
files.append((filepath,angle))
im.convert('RGB').save(filepath,optimize=True)
print(filepath)
import cv2
out = cv2.VideoWriter(get_destination('angles-{}.avi'.format('mapbox-osm')), cv2.VideoWriter_fourcc(*'MJPG'), fps, (w,h))
for filepath,angle in files + list(reversed(files)):
d = 0.01
print("Loading ", filepath)
im = cv2.imread(filepath)
text = "{:05.2f}".format(angle)
fontscale = h / 200
linethickness = int(h/100)
cv2.putText(im,
text,
(int(w*d),int(h*(1-d))),
cv2.FONT_HERSHEY_SIMPLEX,
fontscale,
(255,10,10),
linethickness,
cv2.LINE_AA)
out.write(im)
out.release()
def test_profile(self):
projection = ComplexLogProjection(
self.konstanz,
self.hoffeld,
math.pi / 6,
smoothing_function_type=CosCutoffSmoothingFunction)
projector = RasterProjector(projection, self.data_provider)
trange = TargetSectionDescription(-math.pi * 2, math.pi * 2, 1600,
-math.pi, math.pi, 200)
d = projector.project(trange)
def test_profile_close(self):
t2 = LatLng(47.656846, 9.179489) # sealive
projection = ComplexLogProjection(
self.konstanz,
t2,
math.pi / 6,
smoothing_function_type=CosCutoffSmoothingFunction)
projector = RasterProjector(projection, self.data_provider)
trange = TargetSectionDescription(-math.pi * 2, math.pi * 2, 1600,
-math.pi, math.pi, 200)
d = projector.project(trange)
def test_complete(self):
projection = ComplexLogProjection(LatLng(0, 0), LatLng(10, 10),
math.pi / 4)
data = np.array([[1, 45, 0, -45], [1, 0, 45, 45]])
reference = np.transpose(
np.array([[-1.6044065604314688, -0.007577958547331141],
[-1.6165580696347939, -2.061643517294472],
[-1.6112081515800694, 2.0798741549084134],
[-2.083894545839403, 1.5008744404655734]]))
projected = projection(data)
np.testing.assert_almost_equal(projected, reference)
pass
def resolve(lat1, lng1, lat2, lng2, cutoff, smoothing, clickLat, clickLng):
proj = ComplexLogProjection(
LatLng(lat1, lng1),
LatLng(lat2, lng2),
math.radians(cutoff),
smoothing_function_type=parse_smoothing(smoothing))
x, y = tiling.from_leaflet_LatLng(LatLng(clickLat, clickLng))
xy = np.array([[x], [y]])
latlng_data = proj.invert(xy)
assert latlng_data.shape == (2, 1)
ret_data = {"lat": latlng_data[0, 0], "lng": latlng_data[1, 0]}
response = app.response_class(response=json.dumps(ret_data),
status=200,
mimetype='application/json')
response.headers.add('Access-Control-Allow-Origin', '*')
response.headers.add('Access-Control-Allow-Headers',
'Content-Type,Authorization')
response.headers.add('Access-Control-Allow-Methods',
'GET,PUT,POST,DELETE,OPTIONS')
return response
def test_project_image_osm_small(self):
konstanz = LatLng(47.711801, 9.084545)
sealive = LatLng(47.656846, 9.179489) # sealive
projection = ComplexLogProjection(
konstanz,
sealive,
math.pi / 6,
smoothing_function_type=CosCutoffSmoothingFunction)
projector = RasterProjector(projection,
OSMRasterDataProvider(dummy_resolver))
trange = TargetSectionDescription(-math.pi * 2, math.pi * 2, 500,
-math.pi, math.pi, 250)
d = projector.project(trange)
import matplotlib.pyplot as plt
plt.imshow(d)
plt.show()
def test_project_image_osm(self):
konstanz = LatLng(47.711801, 9.084545)
hoffeld = LatLng(48.735051, 9.181156)
projection = ComplexLogProjection(
konstanz,
hoffeld,
math.pi / 6,
smoothing_function_type=DualCosSmoothingFunction)
projector = RasterProjector(projection,
OSMRasterDataProvider(dummy_resolver))
trange = TargetSectionDescription(-math.pi * 2, math.pi * 2, 500,
-math.pi, math.pi, 250)
d = projector.project(trange)
import matplotlib.pyplot as plt
plt.imshow(d)
plt.show()
def testZoomLevel(self):
projection_small = ComplexLogProjection(LatLng(0, 0), LatLng(10, 10),
math.pi / 4)
projection_large = ComplexLogProjection(LatLng(-10, -10),
LatLng(10, 10), math.pi / 4)
data = np.array([[-1, -2, 1, 2], [1, 1, 1, 1]])
# expected = np.array([np.exp(1), np.exp(2), np.exp(1), np.exp(2)])
r1 = projection_small.getZoomLevel(data, 100)
r2 = projection_large.getZoomLevel(data, 100)
r3 = projection_small.getZoomLevel(data, 200)
diff = r1 - r2
np.testing.assert_almost_equal(diff, np.array([1, 1, 1, 1]))
assert r1[0] < r1[1]
np.testing.assert_almost_equal(r3[0] - r1[0], 1)
pass
def test_project_image_osm_wide(self):
prov = get_providers()
konstanz = LatLng(47.711801, 9.084545)
leipzig = LatLng(51.348419, 12.370946) #
projection = ComplexLogProjection(
konstanz,
leipzig,
math.pi / 6,
smoothing_function_type=CosCutoffSmoothingFunction)
projector = RasterProjector(projection, prov['transparent'])
trange = TargetSectionDescription(-math.pi * 4, math.pi * 4, 2000,
-math.pi, math.pi, 500)
d = projector.project(trange)
import matplotlib.pyplot as plt
plt.imshow(d)
plt.savefig("sample.png", dpi=2000)
plt.clf()
def test_project_ch(self):
prov = get_providers()
trange = TargetSectionDescription(-math.pi * 2, math.pi * 2, 4000, -math.pi, math.pi, 2000)
#frankfurt_a_m = LatLng(50.115822, 8.702537)
stuttgart = LatLng(48.783810,9.180071)
fn = LatLng(47.652839, 9.472735) #
for angle in [0,15,30,45]:
projection = ComplexLogProjection(stuttgart, fn, math.radians(angle),
smoothing_function_type=DualCosSmoothingFunction)
projector_transparent = RasterProjector(projection, prov['ch'])
projector_mapbox = RasterProjector(projection, prov['mapbox'])
d_trans = Image.fromarray(projector_transparent.project(trange))
d_mapbox = Image.fromarray(projector_mapbox.project(trange))
im = Image.alpha_composite(d_mapbox,d_trans)
filename = get_destination("sample-ch-angle-" + str(angle)+".jpeg")
im.convert('RGB').save(filename,optimize=True)
print(filename)
def test_project_image_angles(self):
prov = get_providers()
trange = TargetSectionDescription(-math.pi * 2, math.pi * 2, 4000, -math.pi/2, math.pi/2, 1000)
#frankfurt_a_m = LatLng(50.115822, 8.702537)
halle = LatLng(51.506136,11.964422)
leipzig = LatLng(51.348419, 12.370946) #
for angle in [0,15,30,45]:
projection = ComplexLogProjection(halle, leipzig, math.radians(angle),
smoothing_function_type=DualCosSmoothingFunction)
projector_transparent = RasterProjector(projection, prov['transparent'])
projector_mapbox = RasterProjector(projection, prov['mapbox'])
d_trans = Image.fromarray(projector_transparent.project(trange))
d_mapbox = Image.fromarray(projector_mapbox.project(trange))
im = Image.alpha_composite(d_mapbox,d_trans)
filename = get_destination("sample-angle-" + str(angle)+".jpeg")
im.convert('RGB').save(filename,optimize=True)
print(filename)
def test_distance_scaling(self):
fs = (12,2.8)
gridspec = {'width_ratios': [1,1,1,1,.15]}
fig_distance,axes_distance = plt.subplots(1,5,num=0,figsize=fs,gridspec_kw=gridspec)
fig_angle,axes_angle =plt.subplots(1,5,num=1,figsize=fs,gridspec_kw=gridspec)
fig_area,axes_area = plt.subplots(1,5,num=2,figsize=fs,gridspec_kw=gridspec)
fig_direction, axes_direction = plt.subplots(1,5,num=3,figsize=fs,gridspec_kw=gridspec)
limb_length_max = 0.001
def apply_clipping(data:np.ndarray,clipping:np.ndarray):
d = data.copy()
d[clipping] = None
return d
res = 5000
for i,angle in enumerate([0,15,30,44.99]):
projection = ComplexLogProjection(LatLng(-1,0),LatLng(1,0),math.radians(angle),smoothing_function_type=DualCosSmoothingFunction,preprojection=IdentityPreprojection())
trange = TargetSectionDescription(-2,2,res,-2,2,res)
extent = [trange.xmin,trange.xmax,trange.ymin,trange.ymax]
rp = RasterProjector(projection,CosSinRasterDataProvider)
grid = rp.build_grid(trange)
#offset = np.stack([ np.ones((grid.shape[1],))*0.01, np.ones((grid.shape[1],))*0],axis=0)
offset = np.random.uniform(-limb_length_max/math.sqrt(2),limb_length_max/math.sqrt(2),grid.shape)
offset_2 = np.stack([offset[1,:],-offset[0,:] ],axis=0)
#offset_2 = np.random.uniform(-0.01,0.01,grid.shape)
offset_up = np.stack([np.ones(grid.shape[1])*0,np.ones(grid.shape[1])*limb_length_max],axis=0)
azimuthal_center_point = np.array([[0],[0]])
azimuthal_to_center_vec = azimuthal_center_point - grid
azimuthal_to_center_vec_len = np.sqrt( np.sum(np.square(azimuthal_to_center_vec),axis=0,keepdims=True)) + 1e-7
grid_offset = grid+ offset
grid_offset_2 = grid + offset_2
grid_up = grid + offset_up
grid_towards_center = grid + limb_length_max * (azimuthal_to_center_vec/azimuthal_to_center_vec_len)
euclid = euclideanDist(grid,grid_offset)
grid_projected,clipping = projection(grid,calculate_clipping=True)
grid_offset_projected = projection(grid_offset)
grid_offset_projected_2 = projection(grid_offset_2)
grid_up_projected = projection(grid_up)
grid_towards_center_projected = projection(grid_towards_center)
projected_euclid = euclideanDist(grid_projected,grid_offset_projected)
ratio = projected_euclid / euclid
ratio_e = np.expand_dims(ratio,axis=0)
rsg = np.squeeze(rp.reshape_grid(ratio_e,trange,1),axis=-1)
clipping = np.squeeze(rp.reshape_grid(np.expand_dims(clipping,axis=0),trange,1),axis=-1)
minv,maxv = rsg.min(),rsg.max()
ax = axes_distance.flat[i]
ax.set_title("$\gamma = {}°$".format(angle))
im_distance = ax.imshow(apply_clipping(rsg,clipping)
,norm=LogNorm(0.1,10,clip=True)
#,norm=LogNorm()
,extent=extent)
delta1 = grid_offset- grid
delta2 = grid_offset_2 - grid
angles = anglesBetween(delta1,delta2)
delta1_projected = grid_offset_projected - grid_projected
delta2_projected = grid_offset_projected_2 - grid_projected
angles_projected = anglesBetween(delta1_projected,delta2_projected)
angle_diff = np.degrees( np.abs(angles-angles_projected))
angles_formatted = np.squeeze(rp.reshape_grid(angle_diff,trange,1),axis=-1)
ax = axes_angle.flat[i]
ax.set_title("$\gamma = {}°$".format(angle))
im_angle = ax.imshow(apply_clipping(angles_formatted,clipping),
norm=Normalize(0,60,clip=True),
extent=extent)
area = triangleArea(grid,grid_offset,grid_offset_2)
area_projected = triangleArea(grid_projected,grid_offset_projected,grid_offset_projected_2)
area_ratio = np.squeeze(rp.reshape_grid(np.expand_dims(area_projected/area,axis=0),trange,1))
ax = axes_area.flat[i]
ax.set_title("$\gamma = {}°$".format(angle))
im_area = ax.imshow(apply_clipping(area_ratio,clipping),norm=LogNorm(0.01,100),extent=extent)
delta_to_center = grid_towards_center - grid
delta_projected_up = grid_towards_center_projected - grid_projected
d_angle = np.arctan2(delta_projected_up[1,:],delta_projected_up[0,:])
delta_angle = np.arctan2(delta_to_center[1,:],delta_to_center[0,:])
d_angle = np.abs(np.degrees(np.expand_dims(d_angle - delta_angle,axis=0)) )
da_data = np.squeeze(rp.reshape_grid(d_angle,trange,1))
ax = axes_direction.flat[i]
ax.set_title("$\gamma = {}°$".format(angle))
im_direction = ax.imshow(apply_clipping(da_data,clipping),norm=Normalize(0,180),extent=extent)
for axes in [axes_distance,axes_angle,axes_area,axes_direction]:
for x in axes.flat[:4]:
#x.grid(True,which='both',axis='both')
x.set_aspect(1)
#axes.flat[-1].set_aspect(8)
h_pad = None
w_pad = None
pad = None
tight_args = {
"rect":[0,0,1,.9]
}
plt.figure(fig_distance.number)
cbar = fig_distance.colorbar(im_distance,ax=axes_distance.tolist(),cax=axes_distance.flat[4],fraction=1.0)
#cbar.set_clim(10 ** -1, 10 ** 1)
cbar.set_label("Ratio of distance on original plane\nto distance on projected plane")
fig_distance.suptitle("Distance ratio of transformed line segments with lengths of up to {}".format(limb_length_max))
fig_distance.tight_layout(**tight_args)
plt.savefig('./distance.pdf')
plt.figure(fig_angle.number)
cbar = fig_angle.colorbar(im_angle,ax=axes_angle.ravel().tolist(),cax = axes_angle.flat[4])
#cbar.set_clim(10 ** -3, 180)
cbar.set_label("Absolute angle deviation in °")
fig_angle.suptitle("Angle difference for right angle triangles with leg lengths of up to {}".format(limb_length_max))
fig_angle.tight_layout(**tight_args)
plt.savefig(get_destination('./angle.pdf'))
plt.figure(fig_area.number)
cbar = fig_area.colorbar(im_area,ax=axes_area.ravel().tolist(),cax = axes_area.flat[4])
cbar.set_clim(10 ** -2, 10 ** 3)
cbar.set_label("Area ratio")
fig_area.suptitle("Area ratio for right angle triangles with leg lengths up to {}".format(limb_length_max))
fig_area.tight_layout(**tight_args)
plt.savefig(get_destination('./area.pdf'))
plt.figure(fig_direction.number)
cbar = fig_direction.colorbar(im_direction,ax=axes_direction.ravel().tolist(),cax = axes_direction.flat[4],ticks=[0,30,60,90,120,150,180])
cbar.set_clim(0, 180)
cbar.set_label("Absolute angle deviation in °")
fig_direction.suptitle("Direction change of an vector of length {} pointing towards the center point (0,0)".format(limb_length_max))
fig_direction.tight_layout(**tight_args)
plt.savefig(get_destination('./direction.pdf'))
def test_single_example(self):
projection = ComplexLogProjection(LatLng(0, 0), LatLng(10, 10),
math.pi / 4)
data = np.array([[1, 45, 0, -45], [1, 0, 45, 45]])
center = np.array([[0], [0]])
projection._single_forward(data, center, math.pi, 1)
def test_init(self):
ComplexLogProjection(LatLng(0, 0), LatLng(10, 10), math.pi / 4)
def cities_projected(lat1, lng1, lat2, lng2, cutoff, smoothing):
with t.time("loading_cities_lat_lng"):
cities_lat_lng = np.array(
list(map(lambda e: [e['lat'], e['lon']],
get_cities()['elements']))).transpose()
with t.time("parsing_params"):
precision = int(request.args.get("precision", 5)) # number of digits
c1latlng = LatLng(lat1, lng1)
c2latlng = LatLng(lat2, lng2)
proj = ComplexLogProjection(
c1latlng,
c2latlng,
math.radians(cutoff),
smoothing_function_type=parse_smoothing(smoothing))
center_distance = c1latlng.distanceTo(c2latlng)
pixel_per_m = 256.0 / (156412.0)
num_cities = cities_lat_lng.shape[1]
with t.time("projection"):
xy, clipping = proj(cities_lat_lng, calculate_clipping=True)
with t.time("zoomlevel"):
z = proj.getZoomLevel(xy, pixel_per_m)
with t.time("tiling"):
latlngs = [None] * num_cities
for i in range(num_cities):
latlng = tiling.to_leaflet_LatLng(xy[0, i], xy[1, i])
latlngs[i] = latlng
with t.time("packaging"):
ret_v = [None] * num_cities
p_x_int = 10**precision
p_x_float = 10.**precision
my_round = lambda x: int(x * (p_x_int)) / (p_x_float)
for i in range(num_cities):
clipping_v = bool(clipping[i])
latlng = latlngs[i]
ret_element = [
my_round(latlng.lat),
my_round(latlng.lng),
my_round(z[i]), clipping_v
]
ret_v[i] = ret_element
with t.time("assembly"):
z_values = list(map(lambda x: x[2], ret_v))
min_z = min(*z_values)
max_z = max(*z_values)
response = app.response_class(response=json.dumps(
{
"data": ret_v,
"min_z": min_z,
"max_z": max_z
},
check_circular=False,
indent=None),
status=200,
mimetype='application/json')
return response