38 lines
1.2 KiB
Python
38 lines
1.2 KiB
Python
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import json
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from shapely import Polygon
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from shapely import Point
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from pathlib import Path
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def process_geojson(x, y, diff, expansion=False):
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selection_box = Polygon([[x + diff, y - diff],
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[x - diff, y - diff],
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[x - diff, y + diff],
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[x + diff, y + diff]])
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geojson_file = Path('./data/collinear_clean 2.geojson').resolve()
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if not expansion:
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output_file = Path('./input_files/output_buildings.geojson').resolve()
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else:
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output_file = Path('./input_files/output_buildings_expanded.geojson').resolve()
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buildings_in_region = []
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with open(geojson_file, 'r') as file:
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city = json.load(file)
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buildings = city['features']
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for building in buildings:
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coordinates = building['geometry']['coordinates'][0]
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building_polygon = Polygon(coordinates)
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centroid = Point(building_polygon.centroid)
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if centroid.within(selection_box):
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buildings_in_region.append(building)
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output_region = {"type": "FeatureCollection",
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"features": buildings_in_region}
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with open(output_file, 'w') as file:
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file.write(json.dumps(output_region, indent=2))
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return output_file
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