30 lines
1.1 KiB
Ruby
30 lines
1.1 KiB
Ruby
module MapBoundary
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def sanitise_boundaries(bbox)
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min_lon = [bbox[0].to_f,-180].max
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min_lat = [bbox[1].to_f,-90].max
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max_lon = [bbox[2].to_f,+180].min
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max_lat = [bbox[3].to_f,+90].min
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return min_lon, min_lat, max_lon, max_lat
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end
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def check_boundaries(min_lon, min_lat, max_lon, max_lat)
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# check the bbox is sane
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unless min_lon <= max_lon
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raise("The minimum longitude must be less than the maximum longitude, but it wasn't")
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end
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unless min_lat <= max_lat
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raise("The minimum latitude must be less than the maximum latitude, but it wasn't")
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end
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unless min_lon >= -180 && min_lat >= -90 && max_lon <= 180 && max_lat <= 90
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raise("The latitudes must be between -90 and 90, and longitudes between -180 and 180")
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end
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# check the bbox isn't too large
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requested_area = (max_lat-min_lat)*(max_lon-min_lon)
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if requested_area > APP_CONFIG['max_request_area']
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raise("The maximum bbox size is " + APP_CONFIG['max_request_area'].to_s +
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", and your request was too large. Either request a smaller area, or use planet.osm")
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end
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end
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end
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