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import math
from typing import TypedDict, List
from src import app_logger
from src.utilities.constants import TILE_SIZE
class PixelCoordinate(TypedDict):
x: int
y: int
def get_latlng2pixel_projection(latlng) -> PixelCoordinate:
app_logger.info(f"latlng: {type(latlng)}, value:{latlng}.")
app_logger.info(f'latlng lat: {type(latlng["lat"])}, value:{latlng["lat"]}.')
app_logger.info(f'latlng lng: {type(latlng["lng"])}, value:{latlng["lng"]}.')
try:
sin_y: float = math.sin(latlng["lat"] * math.pi / 180)
app_logger.info(f"sin_y, #1:{sin_y}.")
sin_y = min(max(sin_y, -0.9999), 0.9999)
app_logger.info(f"sin_y, #2:{sin_y}.")
x = TILE_SIZE * (0.5 + latlng["lng"] / 360)
app_logger.info(f"x:{x}.")
y = TILE_SIZE * (0.5 - math.log((1 + sin_y) / (1 - sin_y)) / (4 * math.pi))
app_logger.info(f"y:{y}.")
return {"x": x, "y": y}
except Exception as e_get_latlng2pixel_projection:
app_logger.error(f'e_get_latlng2pixel_projection:{e_get_latlng2pixel_projection}.')
raise e_get_latlng2pixel_projection
def get_point_latlng_to_pixel_coordinates(latlng, zoom: int) -> PixelCoordinate:
try:
world_coordinate: PixelCoordinate = get_latlng2pixel_projection(latlng)
app_logger.debug(f"world_coordinate:{world_coordinate}.")
scale: int = pow(2, zoom)
app_logger.debug(f"scale:{scale}.")
return PixelCoordinate(
x=math.floor(world_coordinate["x"] * scale),
y=math.floor(world_coordinate["y"] * scale)
)
except Exception as e_format_latlng_to_pixel_coordinates:
app_logger.error(f'format_latlng_to_pixel_coordinates:{e_format_latlng_to_pixel_coordinates}.')
raise e_format_latlng_to_pixel_coordinates
def get_latlng_to_pixel_coordinates(latlng_origin, latlng_current_point, zoom):
latlng_map_origin = get_point_latlng_to_pixel_coordinates(latlng_origin, zoom)
latlng_map_current_point = get_point_latlng_to_pixel_coordinates(latlng_current_point, zoom)
diff_coord_x = abs(latlng_map_origin["x"] - latlng_map_current_point["x"])
diff_coord_y = abs(latlng_map_origin["y"] - latlng_map_current_point["y"])
return PixelCoordinate(x=diff_coord_x, y=diff_coord_y)
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