class OsmApi:
def __init__(self):
self.client = Connection(host="mongomaster")
self.proj = GlobalMercator()
def getTile(self, zoom, x, y):
(x, y) = self.proj.GoogleTile(x, y, zoom)
quadkey = self.proj.QuadTree(x, y, zoom)
print "Querying for %s." % (quadkey, )
(minlat, minlon, maxlat,
maxlon) = self.proj.TileLatLonBounds(x, y, zoom)
# Nodes in the tile
nodes = {}
cursor = self.client.osm.nodes.find(
{'qk': {
'$regex': "^%s" % (quadkey, )
}})
for row in cursor:
nodes[row['_id']] = row
# Ways with nodes in the tile
ways = {}
cursor = self.client.osm.ways.find(
{'loc': {
'$regex': "^%s" % (quadkey, )
}})
for row in cursor:
ways[row['_id']] = row
# Nodes on ways that extend beyond the bounding box
otherNids = set()
for way in ways.values():
for nid in way['nodes']:
otherNids.add(nid)
cursor = self.client.osm.nodes.find({'_id': {'$in': list(otherNids)}})
for row in cursor:
nodes[row['_id']] = row
# Relations that contain any of the above as members
relations = {}
# Sort the results by id
nodes = sorted(nodes.iteritems())
ways = sorted(ways.iteritems())
relations = sorted(relations.iteritems())
doc = {
'bounds': {
'minlat': minlat,
'minlon': minlon,
'maxlat': maxlat,
'maxlon': maxlon
},
'nodes': nodes,
'ways': ways,
'relations': relations
}
return doc
def main(tiles_path, db_file, groups, zoom_levels):
merc = GlobalMercator()
# Set-up the output db
conn = sqlite3.connect(db_file)
c = conn.cursor()
for zoom in [zoom_levels]: #TODO zoom levels
results_set = c.execute("select x, y, quadkey, group_type from people_by_group order by quadkey asc, rand asc" )
use_ellipse, radius_rel, gamma, os_scale = STYLE[zoom]
radius = os_scale*radius_rel/4/2
quadkey = None
img = None
for i,r in enumerate(results_set):
if (i % 1000 == 0):
print i
x = float(r[0])
y = float(r[1])
next_quadkey = r[2][:zoom]
group = r[3]
if next_quadkey != quadkey:
#finish last tile
if img:
save_tile(img, tiles_path, zoom, gtx, gty)
quadkey = next_quadkey
tx, ty = merc.MetersToTile(x, y, zoom)
gtx, gty = merc.GoogleTile(tx,ty,zoom)
img = Image.new("RGB", (TILE_X*os_scale, TILE_Y*os_scale), "white")
draw = ImageDraw.Draw(img)
minx, miny, maxx, maxy = (c/A for c in merc.TileBounds(tx, ty, zoom))
xscale = (TILE_X*os_scale)/(maxx - minx)
yscale = (TILE_Y*os_scale)/(maxy - miny)
#print 'minx', minx, 'miny', miny, 'maxx', maxx, 'maxy', maxy
#print 'xscale',xscale,'yscale',yscale
#print 'x',x,'y',y,'tx',tx,'ty',ty
# Translate coordinates to tile-relative, google ready coordinates
rx = (x/A - minx)*xscale
ry = (maxy - y/A)*yscale
fill=ImageColor.getrgb(groups[group]['color'])
if use_ellipse:
draw.ellipse((rx-radius,ry-radius,rx+radius,ry+radius), fill=fill)
else:
draw.point((rx, ry), fill=fill)
#print "Draw at ", (rx-radius,ry-radius,rx+radius,ry+radius), ImageColor.getrgb(groups[group]['color'])
save_tile(img, tiles_path, zoom, gtx, gty)
save_defined_tiles(tiles_path)
def GetGridID(Coord):
lat=Coord[0]/1000
lon=Coord[1]/1000
tz=8
mercator = GlobalMercator()
mx, my = mercator.LatLonToMeters( Coord[0]/1000.0, Coord[1]/1000.0 )
tx, ty = mercator.MetersToTile( mx, my, tz )
gx, gy = mercator.GoogleTile(tx, ty, tz)
#print "\tGoogle:", gx, gy
#print tx, ty
return ("%03d" % gx)+("%03d" % gy)
pbar = ProgressBar(widgets=widgets, maxval=total_tiles).start()
tile_list = []
for ty in range(tminy, tmaxy + 1):
for tx in range(tminx, tmaxx + 1):
tile_list.append([tx, ty])
print("Downloading images ...")
nthreads = multiprocessing.cpu_count() * 2
pool = multiprocessing.Pool(processes=nthreads)
for i, _ in enumerate(pool.imap_unordered(process_tile, tile_list), 1):
pbar.update(i)
print("merging images ...")
nthreads = 1
gtx0, gty0 = mercator.GoogleTile(tminx, tminy, tz)
debug_print("create image of size: %d, %d" %
((tmaxx - tminx + 1) * actual_tile_size,
(tmaxy - tminy + 1) * actual_tile_size))
new_im = Image.new('RGB', ((tmaxx - tminx + 1) * actual_tile_size,
(tmaxy - tminy + 1) * actual_tile_size))
for tile_pair in tile_list:
merge_images(tile_pair)
print("saving image ...")
new_im.save(output_jpeg_file, "JPEG")
if tif_output:
# to geotif
lefttop_minlat, lefttop_minlon, lefttop_maxlat, lefttop_maxlon = mercator.TileLatLonBounds(
tminx, tminy, tz)
def getTile(self, zoomlevel):
mercator = GlobalMercator()
mx, my = mercator.LatLonToMeters(self.lat, self.lon)
tminx, tminy = mercator.MetersToTile(mx, my, zoomlevel)
gx, gy = mercator.GoogleTile(tminx, tminy, zoomlevel) #+1?
return gx, gy, zoomlevel
root = options.destination + '/' + str(z)
try:
if os.path.exists(root) == False:
os.makedirs(root)
except:
print "Could not create destination. It may already exist."
for x in range(xarr[0], xarr[1] + 1):
for y in range(yarr[0], yarr[1] + 1):
gx = x
gy = y
xdir = root + '/' + str(x)
if os.path.exists(xdir) == False:
os.makedirs(xdir)
if options.inverty == 'false':
gx, gy = gm.GoogleTile(x, y, z)
url = options.template.format(z=options.zoom, x=gx, y=gy)
#y2 = y - 303
fname = xdir + '/' + str(y) + extension
xscale, xshift, yshift, yscale, xorigin, yorigin = gm.WorldFileParameters(
x, y, z)
try:
image = urllib.URLopener()
image.retrieve(url, fname)
newline = str(xscale) + '\n' + str(xshift) + '\n' + str(
yshift) + '\n' + str(yscale) + '\n' + str(
xorigin) + '\n' + str(yorigin)
file = open(xdir + '/' + str(y) + wf, 'w')
file.write(newline)
file.close()
except:
tminx, tminy = mercator.MetersToTile(mx, my, tz)
if boundingbox:
mx, my = mercator.LatLonToMeters(latmax, lonmax)
print "Spherical Mercator (ESPG:900913) cooridnate for maxlat/maxlon: "
print(mx, my)
tmaxx, tmaxy = mercator.MetersToTile(mx, my, tz)
else:
tmaxx, tmaxy = tminx, tminy
for ty in range(tminy, tmaxy + 1):
for tx in range(tminx, tmaxx + 1):
tilefilename = "%s/%s/%s" % (tz, tx, ty)
print tilefilename, "( TileMapService: z / x / y )"
gx, gy = mercator.GoogleTile(tx, ty, tz)
print "\tGoogle:", gx, gy
quadkey = mercator.QuadTree(tx, ty, tz)
print "\tQuadkey:", quadkey, '(', int(quadkey, 4), ')'
bounds = mercator.TileBounds(tx, ty, tz)
print
print "\tEPSG:900913 Extent: ", bounds
wgsbounds = mercator.TileLatLonBounds(tx, ty, tz)
print "\tWGS84 Extent:", wgsbounds
print "\tgdalwarp -ts 256 256 -te %s %s %s %s %s %s_%s_%s.tif" % (
bounds[0], bounds[1], bounds[2], bounds[3],
"<your-raster-file-in-epsg900913.ext>", tz, tx, ty)
print
########NEW FILE########
class Downloader(object):
'''
Based on http://www.wellho.net/solutions/python-python-threads-a-first-example.html
'''
def __init__(self, mapdir, minzoom, maxzoom):
self.mercator = GlobalMercator(256)
self.minzoom = minzoom
self.maxzoom = maxzoom
self.TopRightLat = None
self.TopRightLon = None
self.BottomLeftLat = None
self.BottomLeftLon = None
self.mminx = None
self.mminy = None
self.mmaxx = None
self.mmaxy = None
self.mapdir = mapdir
self.jobs = Queue.Queue()
def download(self, toprightlat, toprightlon, bottomleftlat, bottomleftlon):
self.TopRightLat = toprightlat
self.TopRightLon = toprightlon
self.BottomLeftLat = bottomleftlat
self.BottomLeftLon = bottomleftlon
self.mminx, self.mminy = self.mercator.LatLonToMeters(
toprightlat, toprightlon)
self.mmaxx, self.mmaxy = self.mercator.LatLonToMeters(
bottomleftlat, bottomleftlon)
map(self.addJobForZoom, range(self.minzoom, self.maxzoom + 1))
self.runJobs()
def addJobForZoom(self, zoom):
tminx, tminy = self.mercator.MetersToTile(self.mminx, self.mminy, zoom)
tmaxx, tmaxy = self.mercator.MetersToTile(self.mmaxx, self.mmaxy, zoom)
if tminx > tmaxx:
tminx, tmaxx = tmaxx, tminx
if tminy > tmaxy:
tminy, tmaxy = tmaxy, tminy
for tx in range(tminx, tmaxx + 1):
for ty in range(tminy, tmaxy + 1):
gx, gy = self.mercator.GoogleTile(tx, ty, zoom)
self.jobs.put({'x': gx, 'y': gy, 'z': zoom})
def runJobs(self):
workers = []
for threadNum in range(0, MAX_THREADS):
subdownloader = self.SubDownloader(self)
workers.append(subdownloader)
workers[-1].start()
for worker in workers:
worker.join(20)
print "Finished!"
class SubDownloader(Thread):
def __init__(self, parent):
Thread.__init__(self)
self.parent = parent
def run(self):
while 1:
try:
job = self.parent.jobs.get(0)
except Queue.Empty:
return
mt = random.randrange(0, 4)
filename = '%i/gm_%i_%i_%i.png' % (job['z'], job['x'],
job['y'], job['z'])
if os.path.isfile('%s%s' % (self.parent.mapdir, filename)):
# print "skippnig", filename, "left:", self.parent.jobs.qsize()
continue
if not os.path.isdir('%s%s' % (self.parent.mapdir, job['z'])):
os.mkdir('%s%s' % (self.parent.mapdir, job['z']))
# http://mt1.google.com/vt/lyrs=m@115&hl=en&x=39141&s=&y=26445&z=16&s=Gali
url = 'http://mt%i.google.com/vt/lyrs=m@115&hl=en&x=%i&y=%i&z=%i&s=' % (
mt, job['x'], job['y'], job['z'])
try:
tile = urllib2.urlopen(url=url, timeout=20).read()
except:
# print "Can't open", url, "left:", self.parent.jobs.qsize()
continue
fh = open(filename, 'wb')
fh.write(tile)
fh.close()
print(result) result = gm.MetersToLatLon(meters['mx'], meters['my']) print(result) result = gm.MetersToPixels(meters['mx'], meters['my'], zoom) print(result) result = gm.PixelsToTile(pixels['px'], pixels['py']) print(result) result = gm.PixelsToMeters(pixels['px'], pixels['py'], zoom) print(result) result = gm.TileBounds(tile['tx'], tile['ty'], zoom) print(result) result = gm.LatLonToTile(geographic['lat'], geographic['lon'], zoom) print(result) result = gm.MetersToTile(meters['mx'], meters['my'], zoom) print(result) result = gm.GoogleTile(tile['tx'], tile['ty'], zoom) print(result) result = gm.QuadTree(tile['tx'], tile['ty'], zoom) print(result) tx, ty, zoom = gm.QuadKeyToTile(quadKey) print(tx, ty, zoom)
class TileGrid(object):
#def __init__(self, parentgeometry, bearing = 0.0, zoomlevel = 16, lat = dec.Decimal('32.829608'), lon = dec.Decimal('35.080498')):
#def __init__(self, parentgeometry, bearing = 0.0, zoomlevel = 16, lat = dec.Decimal('32.330347'), lon = dec.Decimal('34.851395')):
def __init__(self,
bearing=0.0,
zoomlevel=16,
lat=decimal.Decimal('32.018300'),
lon=decimal.Decimal('34.898161'),
parent=None):
#set initial values
self.parent = parent
self.bearingSensitivity = decimal.Decimal('0.00001')
self.bearing = bearing
self.zoomlevel = zoomlevel
self.lat = lat
self.lon = lon
self.gx, self.gy = None, None
self.velocity = 0.0
self.sysPath = os.path.join(sys.path[0], "")
self.mapPath = self.sysPath
self.maxZoomLevel = 16
self.destlat = decimal.Decimal('32.776250')
self.destlon = decimal.Decimal('35.028946')
self.distance = 0
self.setBounds(parent.geometry().width(), parent.geometry().height())
self.halfboundx = math.ceil(self.boundx / 2)
self.halfboundy = math.ceil(self.boundy / 2)
#make GlobalMercator instance
self.mercator = GlobalMercator()
# create pathways
self.refresh()
def setMapPath(self, path):
if path != "":
self.mapPath = path + "/"
print self.mapPath
def setBounds(self, newx, newy):
self.boundx, self.boundy = newx, newy
# adding 16px to halfbounds height and width to display icons
self.halfboundx = int(math.ceil(self.boundx / 2)) + 31
self.halfboundy = int(math.ceil(self.boundy / 2)) + 31
def getOffset(self):
'get pixel offset of coordinates from 0,0 of tile'
offpx = self.px - self.tx * self.mercator.tileSize
#the y pixel coordinate system begins from top
offpy = self.mercator.tileSize - (self.py -
self.ty * self.mercator.tileSize)
return offpx, offpy
def moveTo(self, lat, lon, calculateBearing=True):
'move position to lat, lon and update all properties'
#update bearing from previous position
if calculateBearing:
if abs(lon - self.lon) > self.bearingSensitivity \
or abs(lat - self.lat) > self.bearingSensitivity:
self.bearing = math.degrees(
math.atan2(lon - self.lon, lat - self.lat))
if self.bearing < 0:
self.bearing += 360
self.lat = lat
self.lon = lon
#get meters from lat/lon
mx, my = self.mercator.LatLonToMeters(float(self.lat), float(self.lon))
#dx, dy = self.mercator.LatLonToMeters( float(self.destlat), float(self.destlon) )
#self.distance = math.sqrt(math.pow(mx-dx, 2) + math.pow(my-dy, 2 ))
#get pixels from meters
self.px, self.py = self.mercator.MetersToPixels(mx, my, self.zoomlevel)
#get tile from pixels
self.tx, self.ty = self.mercator.PixelsToTile(int(self.px),
int(self.py))
#get google tile
self.gx, self.gy = self.mercator.GoogleTile(self.tx, self.ty,
self.zoomlevel)
#update offset of tile
self.offpx, self.offpy = self.getOffset()
#TODO: calculate loadRect bounds for peripherial tiles
self.sizex = int(math.ceil(self.boundx / self.mercator.tileSize)) + 1
self.sizey = int(math.ceil(self.boundy / self.mercator.tileSize)) + 1
halfdeltax = int(math.ceil(self.sizex / 2)) + 1
halfdeltay = int(math.ceil(self.sizey / 2)) + 1
self.images = set()
offtilex = halfdeltax * self.mercator.tileSize + self.offpx
for x in range(self.gx - halfdeltax, self.gx + halfdeltax + 1):
offtiley = halfdeltay * self.mercator.tileSize + self.offpy
for y in range(self.gy - halfdeltay, self.gy + halfdeltay + 1):
fname = "%i/gm_%i_%i_%i.png" % (self.zoomlevel, x, y,
self.zoomlevel)
if not QtCore.QFile.exists(self.mapPath + fname):
fname = "404.png"
self.images.add((QtCore.QPointF(-offtilex, -offtiley), fname))
offtiley -= self.mercator.tileSize
offtilex -= self.mercator.tileSize
# print fname
self.bounds = {
'TL': (self.px - self.halfboundx, self.py - self.halfboundy),
'TR': (self.px + self.halfboundx, self.py - self.halfboundy),
'BR': (self.px + self.halfboundx, self.py + self.halfboundy),
'BL': (self.px - self.halfboundx, self.py + self.halfboundy)
}
self.pathways = QtGui.QPolygonF()
# create waypoints icons
self.visible_waypoints = set()
for wp in self.waypoints_pixels:
x = wp[0] - self.px
y = self.py - wp[1]
self.pathways.append(QtCore.QPointF(x, y))
if self.isVisible(wp):
self.visible_waypoints.add(QtCore.QPointF(x - 15, y - 32))
# print self.waypoints_pixels
def isVisible(self, wp):
return wp[0] > self.bounds['TL'][0] and \
wp[0] < self.bounds['TR'][0] and \
wp[1] > self.bounds['TL'][1] and \
wp[1] < self.bounds['BL'][1]
def refresh(self):
self.waypoints_pixels = set()
for wp in self.parent.waypoint:
wpm = self.mercator.LatLonToMeters(wp[0], wp[1])
wppx = self.mercator.MetersToPixels(wpm[0], wpm[1], self.zoomlevel)
self.waypoints_pixels.add(wppx)
self.moveTo(self.lat, self.lon)
def setZoom(self, zoom):
self.zoomlevel = zoom
self.refresh()
def zoomIn(self):
if self.zoomlevel < self.maxZoomLevel:
self.zoomlevel += 1
self.refresh()
def zoomOut(self):
if self.zoomlevel > 0:
self.zoomlevel -= 1
self.refresh()
def setBearing(self, bear):
self.bearing = bear
def setVelocity(self, vel):
self.velocity = vel
