/
map.py
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/
map.py
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import sys
import os.path
import threading
import json
import traceback
from kivy.app import App
from kivy.garden.mapview import MapView, MapMarker, MarkerMapLayer
from kivy.clock import Clock
from kivy.uix.widget import Widget
from kivy.uix.image import Image
from kivy.uix.behaviors import ButtonBehavior
from kivy import graphics
from kivy.properties import NumericProperty, ObjectProperty, ListProperty, \
AliasProperty, BooleanProperty, StringProperty
from kivy.core.window import Window
from kivy.animation import Animation
from kivy.uix.label import Label
import pandas
import click
# A big hack: we stretch the longitude (x coord) by a constant that makes "circles" in WGS 84 circular
# ideally we'd use another projection, but that would take time
X_STRETCH = 1.531
def arc_params(row, column_name, rpos, mapview):
value = row[column_name]
if column_name == 'avgtemp':
minimum = mapview.min_avg_temp
maximum = mapview.max_avg_temp
normalized_avgtemp = (value - minimum) / (maximum - minimum)
n2 = normalized_avgtemp * 2
if normalized_avgtemp < 1/2:
return {'rgba': (n2, 0, 1, 1)}
else:
return {'rgba': (1, 0, 1-n2, 1)}
else:
return {'rgba': (0, rpos, 0, 1), 'end': 360*value}
class CustomMapView(MapView):
def __init__(self, *args, radiuses, **kwargs):
self.active_marker = None
self.radiuses = radiuses
super().__init__(*args, **kwargs)
self.bind(
lat=self.send_position,
lon=self.send_position,
zoom=self.send_position,
)
shade_layer = MarkerMapLayer()
self.add_layer(shade_layer)
self.shade_marker = ShadeMapMarker(lat=0, lon=0, radiuses=self.radiuses)
self.add_marker(self.shade_marker, layer=shade_layer)
self.marker_layer = MarkerMapLayer()
self.add_layer(self.marker_layer)
self.tooltip_widget = None
Window.bind(mouse_pos=self.update_mouse_pos)
def update_mouse_pos(self, window, mouse_pos):
if not self.get_root_window():
return
under_mouse = self.lookup_marker(*mouse_pos)
if self.tooltip_widget:
if self.tooltip_widget == under_mouse:
return
self.tooltip_widget.close_tooltip()
Clock.unschedule(self.display_tooltip) # cancel scheduled event since I moved the cursor
self.tooltip_widget = under_mouse
if self.tooltip_widget:
Clock.schedule_once(self.display_tooltip, 0.05)
def display_tooltip(self, *args):
if self.tooltip_widget:
self.remove_marker(self.tooltip_widget)
self.add_marker(self.tooltip_widget, layer=self.marker_layer)
self.tooltip_widget.show_tooltip()
def lookup_marker(self, x, y):
r2 = 20 ** 2
for marker in self.marker_layer.children:
if (x - marker.x) ** 2 + (y - marker.y) ** 2 < r2:
return marker
def set_active_marker(self, marker):
if self.active_marker:
self.active_marker.set_active(False)
self.shade_marker.active = False
self.active_marker = marker
if marker:
marker.set_active(True)
self.shade_marker.lat = marker.lat
self.shade_marker.lon = marker.lon
data = marker.row.to_dict()
data['location'] = marker.row.name
send_command(
cmd='point_selected',
row=data,
)
self.shade_marker.active = True
else:
self.shade_marker.active = False
self.shade_marker.reposition()
def send_position(self, *args):
send_command(
cmd='pos',
lat=self.lat,
lon=self.lon,
zoom=self.zoom,
)
class ShadeMapMarker(MapMarker):
def __init__(self, *args, radiuses, **kwargs):
self.active_marker = None
self.radiuses = radiuses
kwargs['size'] = 40, 40
kwargs['anchor_y'] = 0.5
super().__init__(*args, **kwargs)
self.active = False
self.canvas.clear()
with self.canvas:
self.shade_color = graphics.Color(1, 1, 1, 0)
self.radius_circles = [graphics.Ellipse() for i in range(3)]
self.bind(pos=self.reposition)
def get_mapview(self):
mapview = self
while not isinstance(mapview, CustomMapView):
mapview = mapview.parent
if mapview is None:
return
return mapview
def reposition(self, *args):
if self.active:
self.shade_color.rgba = 1, 1, 1, 0.3
mapview = self.get_mapview()
if mapview is None:
Clock.schedule_once(self.reposition, 0)
return
for i, (r, circle) in enumerate(zip(self.radiuses, self.radius_circles)):
ry = float(r)
rx = ry * X_STRETCH
xm, ym, = mapview.get_window_xy_from(self.lat, self.lon, zoom=mapview.zoom)
x1, y1 = mapview.get_window_xy_from(self.lat - ry, self.lon - rx, zoom=mapview.zoom)
x2, y2 = mapview.get_window_xy_from(self.lat + ry, self.lon + rx, zoom=mapview.zoom)
circle.pos = x1, y1
circle.size = x2-x1, y2-y1
else:
self.shade_color.rgba = 1, 1, 1, 0
def collide_point(self, x, y):
return False
class Tooltip(Widget):
def __init__(self, marker, **kwargs):
super().__init__(**kwargs)
with self.canvas.before:
graphics.PushMatrix()
self.translation = graphics.Translate(0, 0)
graphics.StencilPush()
self.stencil_rect = graphics.Rectangle(size=(200, 5))
graphics.StencilUse()
graphics.Color(1, 1, 1/2, 0.8)
self.bg_rect = graphics.Rectangle(size=(100, 100))
graphics.Color(*marker.outer_ring_color)
graphics.Ellipse(pos=(8, 8), size=(10, 10))
graphics.PopMatrix()
graphics.Color(0, 0, 0, 1)
self.label = Label(
text='[b]{}[/b]'.format(marker.row['Adresa']), markup=True,
pos=(5, 5), color=(0, 0, 0, 1),
)
self.label2 = Label(
text='{:+.2f}°C from average'.format(marker.row['difftemp']),
pos=(5, 5), color=(0, 0, 0, 1),
)
self.add_widget(self.label)
self.add_widget(self.label2)
self.label.bind(texture_size=self.resize_text)
self.label2.bind(texture_size=self.resize_text)
with self.canvas.after:
graphics.StencilUnUse()
graphics.StencilPop()
pass
def open(self):
sz = self.stencil_rect.size[0]
Animation(size=(sz, 80), duration=0.1).start(self.stencil_rect)
def close(self):
sz = self.stencil_rect.size[0]
anim = Animation(size=(sz, 0), duration=0.1)
anim.start(self.stencil_rect)
def resize_text(self, *args):
l1w, l1h = self.label.texture_size
l2w, l2h = self.label2.texture_size
lw = max(l1w, l2w + 20)
lh = l1h + l2h
self.label.width = l1w
self.label.height = 20
self.label2.width = l2w
self.label2.height = 20
self.bg_rect.size = (
lw + 10,
lh + 10,
)
self.reposition()
def reposition(self, *args):
lw, lh = self.label.texture_size
parent = self.parent
if parent:
x = parent.x + 8
y = parent.y + 15
self.translation.xy = x, y
self.label.pos = x + 5, y + 3 + self.label2.texture_size[1]
self.label2.pos = x + 5 + lh, y + 3
def collide_point(self, x, y):
return False
class CustomMapMarker(MapMarker):
def __init__(self, *args, row, radiuses, columns, mapview, **kwargs):
self.row = row
self.radiuses = radiuses
self.columns = columns
self.lat, self.lon = row.name
super().__init__(*args, **kwargs)
self.anchor_x = 0
self.anchor_y = 0
self.radius = 20
self.size = self.radius * 2, self.radius * 2
self.active = False
self.tooltip = None
self.canvas.clear()
with self.canvas.after:
graphics.PushMatrix()
self.translation = graphics.Translate(0, 0)
self.border_color = graphics.Color(0, 0, 0, 0.3)
sz = self.size[0] + 2
hsz = -sz/2
graphics.Ellipse(size=(sz, sz), pos=(hsz, hsz))
self.outer_ring_color = None
n = len(columns)
for pos, r in enumerate(reversed(columns)):
value = self.row[str(r)]
rpos = (n - pos) / n
params = arc_params(row, r, rpos, mapview)
sz = self.size[0] / n * (n - pos)
hsz = -sz/2
graphics.Color(1-rpos/20, 1-rpos/20, 1, 1)
graphics.Ellipse(size=(sz, sz), pos=(hsz, hsz))
if value:
graphics.Color(*params['rgba'])
graphics.Ellipse(size=(sz, sz), pos=(hsz, hsz), angle_end=params.get('end', 360))
if self.outer_ring_color is None:
self.outer_ring_color = params['rgba']
graphics.PopMatrix()
self.bind(pos=self.reposition)
self.set_active(False)
def close_tooltip(self):
if self.tooltip:
self.tooltip.close()
def show_tooltip(self):
if not self.tooltip:
self.tooltip = Tooltip(self)
self.add_widget(self.tooltip)
self.reposition()
self.tooltip.open()
def on_touch_down(self, touch):
if self.collide_point(touch.x, touch.y):
mapview = self.get_mapview()
if mapview is None:
return
if self.active:
mapview.set_active_marker(None)
else:
mapview.remove_widget(self)
mapview.add_marker(self, layer=mapview.marker_layer)
mapview.set_active_marker(self)
return True
def set_active(self, active):
self.canvas.before.clear()
self.active = active
self.reposition()
if active:
self.border_color.rgba = 0, 0, 0, 0.5
else:
self.border_color.rgba = 0, 0, 0, 0.1
def collide_point(self, x, y):
mapview = self.get_mapview()
if mapview is None:
return
lat, lon = mapview.get_window_xy_from(self.lat, self.lon, zoom=mapview.zoom)
x -= self.pos[0]
y -= self.pos[1]
return x**2 + y**2 < self.radius ** 2
def get_mapview(self):
mapview = self
while not isinstance(mapview, CustomMapView):
mapview = mapview.parent
if mapview is None:
return
return mapview
def reposition(self, *args):
self.translation.xy = self.pos
if self.tooltip:
self.tooltip.reposition()
def send_command(**kwargs):
print(json.dumps(kwargs), flush=True)
class MapViewApp(App):
def __init__(self, points, radiuses, columns, *args, **kwargs):
kwargs.setdefault('icon', 'logo.png')
super().__init__(*args, **kwargs)
self.points = points
self.radiuses = radiuses
self.columns = columns
self.min_avg_temp = points['avgtemp'].min()
self.max_avg_temp = points['avgtemp'].max()
input_thread = threading.Thread(target=self.do_input)
input_thread.daemon = True
input_thread.start()
self.bind(on_stop=lambda *a: send_command(cmd='stop'))
send_command(cmd='started')
def build(self):
VEJROSTOVA = {'zoom': 18, 'lat': 49.22025828658787, 'lon': 16.50821292434091}
JINDRICHOVA = {'zoom': 18, 'lat': 49.213795607926734, 'lon': 16.58214582519531}
BRNO = {'zoom': 13, 'lat': 49.205243666554054, 'lon': 16.58976135996045}
args = dict(BRNO)
args['radiuses'] = self.radiuses
self.mapview = CustomMapView(**args)
self.points_iter = iter(enumerate(self.points.iterrows()))
self.add_next_points()
self.title = 'Temperature Map'
return self.mapview
def add_next_points(self, *args):
for n in range(50):
try:
i, (idx, row) = next(self.points_iter)
except StopIteration:
print('loaded', file=sys.stderr)
send_command(cmd='loaded')
return
#mark = CustomMapMarker(lon=row['GPS lon'], lat=row['GPS lat'], source='noun_9209_cc_red.png')
mark = CustomMapMarker(row=row, radiuses=self.radiuses, columns=self.columns, mapview=self)
self.mapview.add_marker(mark, layer=self.mapview.marker_layer)
Clock.schedule_once(self.add_next_points, 0)
print('{}/{}'.format(i, len(self.points)), file=sys.stderr)
def do_input(self):
for line in sys.stdin:
try:
print('map: got ', line, file=sys.stderr)
data = json.loads(line)
cmd = data['cmd']
self.handle_command(cmd, data)
except Exception:
traceback.print_exc()
def handle_command(self, cmd, data):
if cmd == 'stop':
self.stop()
elif cmd == 'pos':
if 'zoom' in data:
self.mapview.zoom = int(data['zoom'])
self.mapview.center_on(float(data['lat']), float(data['lon']))
else:
print('map: ignoring command', cmd, data, file=sys.stderr)
@click.command()
def main():
radiuses = 0.001, 0.005, 0.01
adresace = pandas.read_csv('teplarny-adresace-teplota.csv', sep=';').set_index(['GPS lat', 'GPS lon'])
radiuses = [str(r) for r in radiuses]
columns = radiuses + ['avgtemp']
points = adresace.loc[:, columns + ['Adresa', 'difftemp']].drop_duplicates()
MapViewApp(points, radiuses, columns).run()
if __name__ == '__main__':
main()