107 lines
3.1 KiB
Python
107 lines
3.1 KiB
Python
#!/bin/env python3
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import os
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import requests
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import pytz
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from datetime import datetime, timedelta
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from PIL import Image
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from PIL import ImageFont
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from PIL import ImageDraw
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from io import BytesIO
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FONT_SIZE = 40
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TEXT_COLOR = (255, 255, 255, 255)
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def invert_back_white(img):
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pixels = img.load()
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for y in range(img.size[1]):
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for x in range(img.size[0]):
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r,g,b, _ = pixels[x,y]
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if abs(r - g) < 5 and abs(r - g) < 5 and abs(b - g) < 5:
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pixels[x,y] = (255 - r, 255 - g, 255 - b, 255)
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def scale_to_height(img, new_height):
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width, height = img.size
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new_width = int(new_height * width / height)
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return img.resize((new_width, new_height), Image.ANTIALIAS)
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def scale_to_width(img, new_width):
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width, height = img.size
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new_height = int(new_width * height / width)
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return img.resize((new_width, new_height), Image.ANTIALIAS)
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def main():
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now = datetime.now(pytz.utc)
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earlier = now - timedelta(hours=1)
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params = {'start' : earlier.isoformat(), 'end' : now.isoformat() }
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resp = requests.get('https://network.satnogs.org/api/data/', params=params)
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obs = resp.json()
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obs = reversed(sorted(obs, key=lambda x: x['end']))
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for ob in obs:
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if ob['waterfall'] != None:
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break
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if ob['waterfall'] == None:
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print("No waterfall found")
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return
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resp = requests.get('https://db.satnogs.org/api/satellites/%s/' % ob['norad_cat_id'])
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sat_name = resp.json()['name']
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sat_img_url = resp.json()['image']
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params = {'uuid': ob['transmitter']}
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resp = requests.get('https://network.satnogs.org/api/transmitters/', params=params)
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mode_desc = resp.json()[0]['description']
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resp = requests.get(ob['waterfall'])
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waterfall = Image.open(BytesIO(resp.content)).convert('RGBA')
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invert_back_white(waterfall)
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waterfall = scale_to_height(waterfall, 1024)
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water_width, _ = waterfall.size
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logo = Image.open("satnogs-logo.png").convert('RGBA')
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logo_w, logo_h = logo.size
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invert_back_white(logo)
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sat_img = None
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if sat_img_url != None:
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resp = requests.get(sat_img_url)
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sat_img = Image.open(BytesIO(resp.content)).convert('RGBA')
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sat_img = scale_to_width(sat_img, 500)
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img = Image.new('RGBA', (1280,1024))
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draw = ImageDraw.Draw(img)
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draw.rectangle((0, 0, 1280, 1024), fill=(0, 0, 0, 255))
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station_name = ob['station_name']
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if len(station_name) > 20:
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station_name = station_name[:20] + "..."
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infos = "Satellite: %s\nStation: %s\nMode: %s\nStart: %s\nEnd: %s" % (sat_name, station_name, mode_desc, ob['start'], ob['end'])
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font = ImageFont.truetype("Montserrat-Regular.otf", FONT_SIZE)
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draw.text((water_width + 100, logo_h+50),
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infos,
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TEXT_COLOR,
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font=font)
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img.paste(waterfall, (0, 0))
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img.paste(logo, (water_width + 100, 20))
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if sat_img != None:
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img.paste(sat_img, (water_width + 100, 400))
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img.save('waterfall_tmp.png')
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os.rename('waterfall_tmp.png', 'waterfall.png')
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if __name__ == '__main__':
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main()
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