def update_display():
# clear out existing icons
while len(storm_icons):
_ = storm_icons.pop()
# get latest storm data
try:
storm_data = pyportal.fetch()
except RuntimeError:
return
print("Number of storms:", len(storm_data))
# parse the storm data
for storm in storm_data:
# don't exceed max
if len(storm_icons) >= MAX_STORMS:
continue
# get lat/lon
lat = storm["latitudeNumeric"]
lon = storm["longitudeNumeric"]
# check if on map
if (not LAT_RANGE[0] >= lat >= LAT_RANGE[1]
or not LON_RANGE[0] <= lon <= LON_RANGE[1]):
continue
# OK, let's make a group for all the graphics
storm_gfx = displayio.Group(max_size=3) # icon + label + arrow
# convert to sreen coords
x = int(
map_range(lon, LON_RANGE[0], LON_RANGE[1], 0,
board.DISPLAY.width - 1))
y = math.radians(lat)
y = math.tan(math.pi / 4 + y / 2)
y = math.log(y)
y = (VIRTUAL_WIDTH * y) / (2 * math.pi)
y = VIRTUAL_HEIGHT / 2 - y
y = int(y - Y_OFFSET)
# icon type
if storm["classification"] in STORM_CLASS:
storm_type = STORM_CLASS.index(storm["classification"])
else:
storm_type = 0
# create storm icon
icon = displayio.TileGrid(
icons_bmp,
pixel_shader=icons_pal,
width=1,
height=1,
tile_width=16,
tile_height=16,
default_tile=storm_type,
x=x - 8,
y=y - 8,
)
# add storm icon
storm_gfx.append(icon)
# add a label
name = Label(
terminalio.FONT,
text=storm["name"],
color=NAME_COLOR,
background_color=NAME_BG_COLOR,
)
name.anchor_point = (0.0, 1.0)
name.anchored_position = (x + 8, y - 8)
storm_gfx.append(name)
# add direction arrow
angle = math.radians(storm["movementDir"])
xd = x + int(ARROW_LENGTH * math.sin(angle))
yd = y - int(ARROW_LENGTH * math.cos(angle))
arrow = Line(x, y, xd, yd, color=ARROW_COLOR)
storm_gfx.append(arrow)
# add the storm graphics
storm_icons.append(storm_gfx)
# update time
info_update.text = storm["lastUpdate"]
# debug
print("{} @ {},{}".format(storm["name"], storm["latitudeNumeric"],
storm["longitudeNumeric"]))
# no storms? at least say something
if not len(storm_icons):
print("No storms in map area.")
storm_icons.append(
Label(
terminalio.FONT,
scale=4,
x=50,
y=110,
text="NO STORMS\n IN AREA",
color=NAME_COLOR,
background_color=NAME_BG_COLOR,
))
for i, c in enumerate(icons_pal):
if c == 0xFFFF00:
icons_pal.make_transparent(i)
storm_icons = displayio.Group(max_size=MAX_STORMS)
pyportal.splash.append(storm_icons)
STORM_CLASS = ("TD", "TS", "HU")
# setup info label
info_update = Label(
terminalio.FONT,
text="1984-01-01T00:00:00.000Z",
color=NAME_COLOR,
background_color=NAME_BG_COLOR,
)
info_update.anchor_point = (0.0, 1.0)
info_update.anchored_position = (10, board.DISPLAY.height - 10)
pyportal.splash.append(info_update)
# these are need for lat/lon to screen x/y mapping
VIRTUAL_WIDTH = board.DISPLAY.width * 360 / (LON_RANGE[1] - LON_RANGE[0])
VIRTUAL_HEIGHT = board.DISPLAY.height * 360 / (LAT_RANGE[0] - LAT_RANGE[1])
Y_OFFSET = math.radians(LAT_RANGE[0])
Y_OFFSET = math.tan(math.pi / 4 + Y_OFFSET / 2)
Y_OFFSET = math.log(Y_OFFSET)
Y_OFFSET = (VIRTUAL_WIDTH * Y_OFFSET) / (2 * math.pi)
Y_OFFSET = VIRTUAL_HEIGHT / 2 - Y_OFFSET
def update_display():
# clear out existing icons
while len(storm_icons):
BATT_ICON_TILEGRID = displayio.TileGrid(
BATT_BITMAP, pixel_shader=displayio.ColorConverter())
BATT_ICON_TILEGRID.x = (DISPLAY.width - BATT_BITMAP.width + 1) // 2
BATT_ICON_TILEGRID.y = (DISPLAY.height - BATT_BITMAP.height + 1) // 2
# onDiskBitmap seems to treat black as transparent...image won't
# show correctly on white background, so make an in-between rect
# to fill the area behind the battery icon with black.
BATT_GROUP.append(
fillrect(BATT_ICON_TILEGRID.x, BATT_ICON_TILEGRID.y, BATT_BITMAP.width,
BATT_BITMAP.height, 0))
BATT_GROUP.append(BATT_ICON_TILEGRID)
except:
# If load fails, fall back on text low-batt message
TEXT = Label(FONT_MEDIUM, text='LOW BATTERY', color=0)
TEXT.anchor_point = (0.5, 0.5)
TEXT.anchored_position = (DISPLAY.width // 2, DISPLAY.height // 2)
BATT_GROUP.append(TEXT)
# Populate list of NextBus objects from STOPS[] and generate initial text
# labels (these get positioned in a second pass later)...
STOP_LIST = []
MAX_SIZE = (0, 0) # Pixel dimensions of largest route number
for stop in STOPS:
STOP_LIST.append(
NextBus(NETWORK, stop[0], stop[1], stop[2], None, MAX_PREDICTIONS,
MINIMUM_TIME))
TEXT = Label(FONT_LARGE, text=stop[1], color=0)
# Keep track of the largest route label for positioning things later
MAX_SIZE = (max(TEXT.width, MAX_SIZE[0]), max(TEXT.height, MAX_SIZE[1]))
TEXT.anchor_point = (1.0, 1.0) # Bottom-right align route
GROUP.append(TEXT)
scale_group = displayio.Group()
FONT_0 = bitmap_font.load_font("/fonts/Helvetica-Bold-24.bdf")
FONT_1 = bitmap_font.load_font("/fonts/OpenSans-16.bdf")
FONT_2 = bitmap_font.load_font("/fonts/OpenSans-9.bdf")
# Define displayio background and group elements
print("*** Define displayio background and group elements")
bkg = displayio.OnDiskBitmap("/clue_scale_dual_chan_bkg.bmp")
_background = displayio.TileGrid(bkg, pixel_shader=bkg.pixel_shader, x=0, y=0)
scale_group.append(_background)
chan_1_label = Label(FONT_1, text=CHAN_1_LABEL, color=clue.CYAN)
chan_1_label.anchor_point = (0.5, 0.5)
chan_1_label.anchored_position = (40, 96)
scale_group.append(chan_1_label)
chan_2_label = Label(FONT_1, text=CHAN_2_LABEL, color=clue.CYAN)
chan_2_label.anchor_point = (0.5, 0.5)
chan_2_label.anchored_position = (199, 96)
scale_group.append(chan_2_label)
zero_1_button_label = Label(FONT_1, text="Z", color=clue.RED)
zero_1_button_label.x = 8
zero_1_button_label.y = 150
scale_group.append(zero_1_button_label)
zero_2_button_label = Label(FONT_1, text="Z", color=clue.RED)
zero_2_button_label.x = 219
zero_2_button_label.y = 150
cell_y = row * CELL_SIZE
cell = Rect(
x=cell_x,
y=cell_y,
width=CELL_SIZE,
height=CELL_SIZE,
fill=None,
outline=None,
stroke=0,
)
image_group.append(cell)
# Define labels and values
status_label = Label(font_0, text="", color=None)
status_label.anchor_point = (0.5, 0.5)
status_label.anchored_position = ((WIDTH // 2) + (GRID_X_OFFSET // 2), HEIGHT // 2)
image_group.append(status_label) # image_group[225]
alarm_label = Label(font_0, text="alm", color=WHITE)
alarm_label.anchor_point = (0, 0)
alarm_label.anchored_position = (1, 16)
image_group.append(alarm_label) # image_group[226]
max_label = Label(font_0, text="max", color=RED)
max_label.anchor_point = (0, 0)
max_label.anchored_position = (1, 46)
image_group.append(max_label) # image_group[227]
min_label = Label(font_0, text="min", color=CYAN)
min_label.anchor_point = (0, 0)
min_label.anchored_position = (1, 106)
disp_rotation=display.rotation,
touch_flip=_touch_flip,
)
# Define the graphic objects if REPL_ONLY = False.
if not REPL_ONLY:
# Define the text graphic objects
font_0 = terminalio.FONT
coordinates = Label(
font=font_0,
text="calib: ((x_min, x_max), (y_min, y_max))",
color=WHITE,
)
coordinates.anchor_point = (0.5, 0.5)
coordinates.anchored_position = (display.width // 2, display.height // 4)
display_rotation = Label(
font=font_0,
text="rotation: " + str(display.rotation),
color=WHITE,
)
display_rotation.anchor_point = (0.5, 0.5)
display_rotation.anchored_position = (display.width // 2, display.height // 4 - 30)
# Define graphic objects for the screen fill, boundary, and touch pen.
target_palette = displayio.Palette(1)
target_palette[0] = BLUE_DK
screen_fill = vectorio.Rectangle(
pixel_shader=target_palette,
x=2,
