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| #!/usr/bin/env python3 | |
| # -*- coding: utf-8 -*- | |
| """ | |
| Created on Tue Aug 2 12:38:31 2022 | |
| @author: syed | |
| """ | |
| import regex_spatial | |
| from utils import geoutil | |
| import geopandas as gpd | |
| import pandas as pd | |
| import re | |
| from shapely.geometry import Polygon,mapping | |
| import numpy as np | |
| from shapely.geometry import Polygon, MultiPoint, LineString, Point | |
| from shapely.geometry.base import geom_factory | |
| from shapely.geos import lgeos | |
| from geocoder import geo_level1 | |
| def get_level3(level3): | |
| digits = re.findall('[0-9]+', level3)[0] | |
| unit = re.findall('[A-Za-z]+', level3)[0] | |
| return digits, unit | |
| def get_directional_coordinates_by_angle(coordinates, centroid, direction, minimum, maximum): | |
| direction_coordinates = [] | |
| for p in coordinates: | |
| angle = geoutil.calculate_bearing(centroid, p) | |
| p2= (p[0],p[1],angle) | |
| if direction in geo_level1.east: | |
| if angle >= minimum or angle <= maximum: | |
| direction_coordinates.append(p2) | |
| else: | |
| if angle >= minimum and angle <= maximum: | |
| direction_coordinates.append(p2) | |
| return direction_coordinates | |
| def sort_west(poly1, poly2, centroid): | |
| coords1 = mapping(poly1)["features"][0]["geometry"]["coordinates"] | |
| coords2 = mapping(poly2)["features"][0]["geometry"]["coordinates"] | |
| coord1 = [] | |
| coord2 = [] | |
| coord = [] | |
| for c in coords1: | |
| pol = list(c[::-1]) | |
| coord1.extend(pol) | |
| for c in coords2: | |
| pol = list(c[::-1]) | |
| coord2.extend(pol) | |
| coo1 = [] | |
| coo2 = [] | |
| for p in coord1: | |
| angle = geoutil.calculate_bearing(centroid, p) | |
| if angle >= 157 and angle <= 202: | |
| coo1.append((p[0], p[1], angle)) | |
| for p in coord2: | |
| angle = geoutil.calculate_bearing(centroid, p) | |
| if angle >= 157 and angle <= 202: | |
| coo2.append((p[0], p[1], angle)) | |
| coo1.extend(coo2) | |
| return coo1 | |
| def get_direction_coordinates(coordinates, centroid, level1): | |
| min_max = geo_level1.get_min_max(level1) | |
| if min_max is not None: | |
| coord = get_directional_coordinates_by_angle(coordinates, centroid, level1, min_max[0], min_max[1]) | |
| return coord | |
| return coordinates | |
| def get_level3_coordinates(coordinates, centroid, level_3, level1): | |
| distance, unit = get_level3(level_3) | |
| kms = geoutil.get_kilometers(distance, unit) | |
| coord = [] | |
| poly1 = Polygon(coordinates) | |
| polygon1 = gpd.GeoSeries(poly1) | |
| poly2 = polygon1.buffer(0.0095*kms, join_style=2) # 扩大小面积 | |
| poly3 = polygon1.buffer(0.013*kms, join_style=2) # 扩大大面积 | |
| poly = poly3.difference(poly2) # 合二为一成为环状 | |
| coords = mapping(poly)["features"][0]["geometry"]["coordinates"] # 改为坐标格式 | |
| for c in coords: | |
| pol = list(c[::-1]) | |
| coord.extend(pol) | |
| if level1 is not None: | |
| coord = get_direction_coordinates(coord, centroid, level1) | |
| if level1 in geo_level1.west: | |
| coord = sort_west(poly3, poly2, centroid) | |
| print("Level 3 Coordinates") | |
| for idx, p in enumerate(coord): | |
| print(idx, p) | |
| return coord, centroid | |
| def get_between_coordinates(coordinates1, coordinates2, centroid1, centroid2): | |
| poly1 = Polygon(coordinates1) | |
| poly2 = Polygon(coordinates2) | |
| center_line = LineString([centroid1, centroid2]) | |
| def max_perpendicular_distance(poly, line): | |
| max_dist = 0 | |
| farthest_points = None | |
| for point in poly.exterior.coords: | |
| p = Point(point) | |
| dist = p.distance(line) | |
| if dist > max_dist: | |
| max_dist = dist | |
| farthest_points = p | |
| return max_dist * 2 | |
| diameter1 = max_perpendicular_distance(poly1, center_line) | |
| diameter2 = max_perpendicular_distance(poly2, center_line) | |
| R = (diameter1 + diameter2) / 2 | |
| midpoint = ((centroid1[0] + centroid2[0]) / 2, (centroid1[1] + centroid2[1]) / 2) | |
| circle = Point(midpoint).buffer(R / 2, resolution=100) | |
| circle_coords = list(circle.exterior.coords) | |
| return [circle_coords], midpoint | |