77 lines
1.7 KiB
Python
77 lines
1.7 KiB
Python
import json
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import numpy as np
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import sys
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from tqdm import tqdm
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import argparse
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parser = argparse.ArgumentParser(description='viz1090 SVG Map Converter')
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parser.add_argument("--resolution", default=250, type=int, help="downsample resolution")
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parser.add_argument("file", nargs="+", help="filename")
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args = parser.parse_args()
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if(len(args.file) == 0):
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print("No input filename given")
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exit()
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bin_file = open("mapdata.bin", "wb")
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outlist = []
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resolution = args.resolution
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for file in args.file:
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with open(file, "r") as read_file:
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data = json.load(read_file)
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print("Reading points")
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for i in tqdm(range(len(data['features']))):
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if(data['features'][i]['geometry']['type'] == 'LineString'):
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prevx = 0
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prevy = 0
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temp = []
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for currentPoint in data['features'][i]['geometry']['coordinates']:
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currentx = float(int(resolution * float(currentPoint[0]))) / resolution
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currenty = float(int(resolution * float(currentPoint[1]))) / resolution
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if(currentx != prevx or currenty != prevy):
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temp.extend([currentx,currenty])
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prevx = currentx
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prevy = currenty
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temp.extend(["0","0"])
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else:
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prevx = 0
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prevy = 0
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temp = []
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for currentLine in data['features'][i]['geometry']['coordinates']:
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for currentPoint in currentLine:
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currentx = float(int(resolution * float(currentPoint[0]))) / resolution
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currenty = float(int(resolution * float(currentPoint[1]))) / resolution
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if(currentx != prevx or currenty != prevy):
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temp.extend([currentx,currenty])
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prevx = currentx
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prevy = currenty
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temp.extend(["0","0"])
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outlist.extend(temp)
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np.asarray(outlist).astype(np.single).tofile(bin_file)
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bin_file.close()
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print("Wrote %d points" % (len(outlist) / 2))
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