| 1 | ###############################################################################
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| 2 | #Management command to generate tiles using gheat.
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| 3 | #
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| 4 | #Must be given a bounding box by using options -s and -e (start and end)
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| 5 | #
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| 6 | #Example usage:
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| 7 | #>>> python manage.py generate_tiles -s 60,6 -e 66,8 -z 10 -c firetrans -v serve_tile
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| 8 | #
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| 9 | #Requires the globalmaptiles.py file. Get it from
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| 10 | #http://www.maptiler.org/google-maps-coordinates-tile-bounds-projection/globalmaptiles.py
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| 11 | #
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| 12 | #Note: This command will NOT create tiles if they are empty. In order to do so, change
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| 13 | #the gheat generate_tile view so that it creates empty tiles for each request given
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| 14 | #x and y and zoom. This way you wan't have "holes" in the tile overlay if using
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| 15 | #the static tiles instead of the usual django url/view.
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| 16 | #
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| 17 | #Author: Anders Eriksen
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| 18 | ###############################################################################
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| 19 |
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| 20 |
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| 21 |
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| 22 | from django.core.management.base import BaseCommand
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| 23 | from optparse import OptionParser, make_option
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| 24 | from django.core.urlresolvers import reverse
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| 25 | from django.test.client import Client
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| 26 | from gheat.globalmaptiles import *
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| 27 |
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| 28 |
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| 29 | class Command(BaseCommand):
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| 30 |
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| 31 | option_list = BaseCommand.option_list + (
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| 32 | make_option("-v", "--tileview", dest="viewname", default="serve_tile"),
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| 33 | make_option("-z", "--zoom", dest="zoomlevel", default=1),
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| 34 | make_option("-s", "--start", dest="start", default="60,6"),
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| 35 | make_option("-e", "--end", dest="end", default="62,6"),
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| 36 | make_option("-c", "--colorscheme", dest="color", default="fire"),
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| 37 | )
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| 38 |
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| 39 | def handle(self, *args, **options):
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| 40 |
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| 41 | profile = 'mercator'
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| 42 | zoomlevel = None
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| 43 | lat, lon, latmax, lonmax, baseurl = None, None, None, None, None
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| 44 | boundingbox = False
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| 45 |
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| 46 | start = options['start'].split(',')
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| 47 | end = options['end'].split(',')
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| 48 | viewname = options['viewname']
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| 49 | colorscheme = str(options['color'])
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| 50 |
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| 51 | #create bounding box from start latlon and end latlon
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| 52 | boundingbox = (float(start[0]), float(start[1]), float(end[0]), float(end[1]))
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| 53 |
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| 54 | tz = int(options['zoomlevel'])
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| 55 | mercator = GlobalMercator()
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| 56 |
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| 57 | #calculate start tiles
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| 58 | mx, my = mercator.LatLonToMeters(float(start[0]), float(start[1]))
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| 59 | tminx, tminy = mercator.MetersToTile(mx, my, tz)
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| 60 |
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| 61 | #calculate end tiles
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| 62 | mx, my = mercator.LatLonToMeters(float(end[0]), float(end[1]))
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| 63 | tmaxx, tmaxy = mercator.MetersToTile(mx, my, tz)
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| 64 |
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| 65 | #initialize browser client
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| 66 | c = Client()
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| 67 |
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| 68 | #loop through each tile and generate a request to the serve_tile view using Client
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| 69 | for ty in range(tminy, tmaxy+1):
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| 70 | for tx in range(tminx, tmaxx+1):
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| 71 |
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| 72 | tileurl = reverse(viewname, kwargs={'color_scheme': colorscheme, 'zoom':tz, 'x':tx, 'y':ty})
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| 73 |
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| 74 | generate_response = c.get(tileurl)
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| 75 |
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| 76 | #lousy error handling. Should check why status 200 not returned... I.e. wrong colorscheme
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| 77 | if generate_response.status_code == 200:
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| 78 | print "Generated tile " + tileurl
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| 79 | else:
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| 80 | print "Failed generating tile " + tileurl
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| 81 |
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