def WMS(z, x, y, this_layer):
if "max_zoom" in this_layer:
if z >= this_layer["max_zoom"]:
return None
wms = this_layer["remote_url"]
req_proj = this_layer.get("wms_proj", this_layer["proj"])
width = 384 # using larger source size to rescale better in python
height = 384
local = config.tiles_cache + this_layer["prefix"] + "/z%s/%s/x%s/%s/y%s." % (z, x / 1024, x, y / 1024, y)
tile_bbox = "bbox=%s,%s,%s,%s" % tuple(projections.from4326(projections.bbox_by_tile(z, x, y, req_proj), req_proj))
wms += tile_bbox + "&width=%s&height=%s&srs=%s" % (width, height, req_proj)
if this_layer.get("cached", True):
if not os.path.exists("/".join(local.split("/")[:-1])):
os.makedirs("/".join(local.split("/")[:-1]))
try:
os.mkdir(local + "lock")
except OSError:
for i in range(20):
time.sleep(0.1)
try:
if not os.path.exists(local + "lock"):
im = Image.open(local + this_layer["ext"])
return im
except IOError, OSError:
return None
def ConstructTileUrl(self, x, y):
if self.server_api == "tms":
url = self.server_url
url = url.replace("{zoom}", str(self.zoom))
url = url.replace("{x}", str(x))
url = url.replace("{y}", str(y))
url = url.replace("{-y}", str((1 << self.zoom) - 1 - y))
sw1 = "{switch:"
sw2 = url.find(sw1)
if sw2 != -1:
sw3 = url.find("}", sw2)
if sw3 != -1:
sw4 = url[sw2:sw3 + 1]
sw5 = url[sw2 + len(sw1):sw3]
sw6 = random.choice(sw5.split(","))
url = url.replace(sw4, sw6)
return url
elif self.server_api == "wms":
a, b, c, d = projections.from4326(
projections.bbox_by_tile(self.zoom, x, y, self.proj),
self.proj)
return self.server_url + "width=%s&height=%s&srs=%s&bbox=%s,%s,%s,%s" % (
self.tile_width, self.tile_height, self.proj, a, b, c, d)
else:
return self.server_url.replace("{quadkey}",
self.ConstructQuadkey(x, y))
def ConstructTileUrl(self, x, y):
if self.tile_mode == "WMS":
a, b, c, d = projections.from4326(
projections.bbox_by_tile(self.zoom, x, y, self.proj),
self.proj)
return self.wms_url + "width=%s&height=%s&srs=%s&bbox=%s,%s,%s,%s" % (
self.tile_width, self.tile_height, self.proj, a, b, c, d)
else:
return self.wms_url + "z=%s&x=%s&y=%s&width=%s&height=%s" % (
self.zoom - 1, x, y, self.tile_width, self.tile_height)
def WMS(z, x, y, this_layer):
if "max_zoom" in this_layer:
if z >= this_layer["max_zoom"]:
return None
wms = this_layer["remote_url"]
req_proj = this_layer.get("wms_proj", this_layer["proj"])
width = 384 # using larger source size to rescale better in python
height = 384
local = config.tiles_cache + this_layer[
"prefix"] + "/z%s/%s/x%s/%s/y%s." % (z, x / 1024, x, y / 1024, y)
tile_bbox = "bbox=%s,%s,%s,%s" % tuple(
projections.from4326(projections.bbox_by_tile(z, x, y, req_proj),
req_proj))
wms += tile_bbox + "&width=%s&height=%s&srs=%s" % (width, height, req_proj)
if this_layer.get("cached", True):
if not os.path.exists("/".join(local.split("/")[:-1])):
os.makedirs("/".join(local.split("/")[:-1]))
try:
os.mkdir(local + "lock")
except OSError:
for i in range(20):
time.sleep(0.1)
try:
if not os.path.exists(local + "lock"):
im = Image.open(local + this_layer["ext"])
return im
except (IOError, OSError):
return None
im = Image.open(StringIO.StringIO(urllib2.urlopen(wms).read()))
if width is not 256 and height is not 256:
im = im.resize((256, 256), Image.ANTIALIAS)
im = im.convert("RGBA")
if this_layer.get("cached", True):
ic = Image.new(
"RGBA", (256, 256),
this_layer.get("empty_color", config.default_background))
if im.histogram() == ic.histogram():
tne = open(local + "tne", "wb")
when = time.localtime()
tne.write("%02d.%02d.%04d %02d:%02d:%02d" %
(when[2], when[1], when[0], when[3], when[4], when[5]))
tne.close()
return False
im.save(local + this_layer["ext"])
os.rmdir(local + "lock")
return im
def WMS (z, x, y, this_layer):
if "max_zoom" in this_layer:
if z >= this_layer["max_zoom"]:
return None
wms = this_layer["remote_url"]
req_proj = this_layer.get("wms_proj", this_layer["proj"])
width = 384 # using larger source size to rescale better in python
height = 384
local = config.tiles_cache + this_layer["prefix"] + "/z%s/%s/x%s/%s/y%s."%(z, x/1024, x, y/1024,y)
tile_bbox = "bbox=%s,%s,%s,%s" % tuple( projections.from4326(projections.bbox_by_tile(z,x,y,req_proj),req_proj))
wms += tile_bbox + "&width=%s&height=%s&srs=%s"%(width, height, req_proj)
if this_layer.get("cached", True):
if not os.path.exists("/".join(local.split("/")[:-1])):
os.makedirs("/".join(local.split("/")[:-1]))
try:
os.mkdir(local+"lock")
except OSError:
for i in range(20):
time.sleep(0.1)
try:
if not os.path.exists(local+"lock"):
im = Image.open(local + this_layer["ext"])
return im
except (IOError, OSError):
return None
im = Image.open(StringIO.StringIO(urllib2.urlopen(wms).read()))
if width is not 256 and height is not 256:
im = im.resize((256,256),Image.ANTIALIAS)
im = im.convert("RGBA")
if this_layer.get("cached", True):
ic = Image.new("RGBA", (256, 256), this_layer.get("empty_color", config.default_background) )
if im.histogram() == ic.histogram():
tne = open (local+"tne", "wb")
when = time.localtime()
tne.write("%02d.%02d.%04d %02d:%02d:%02d"%(when[2],when[1],when[0],when[3],when[4],when[5]))
tne.close()
return False
im.save(local+this_layer["ext"])
os.rmdir(local+"lock")
return im
def ConstructTileUrl (self, x, y):
if self.server_api == "tms":
url = self.server_url
url = url.replace("{zoom}", str(self.zoom))
url = url.replace("{x}", str(x))
url = url.replace("{y}", str(y))
url = url.replace("{-y}", str((1 << self.zoom) - 1 - y))
sw1 = "{switch:"
sw2 = url.find(sw1)
if sw2 != -1:
sw3 = url.find("}", sw2)
if sw3 != -1:
sw4 = url[sw2 : sw3 + 1]
sw5 = url[sw2 + len(sw1) : sw3]
sw6 = random.choice(sw5.split(","))
url = url.replace(sw4, sw6)
return url
elif self.server_api == "wms":
a, b, c, d = projections.from4326(projections.bbox_by_tile(self.zoom, x, y, self.proj), self.proj)
return self.server_url + "width=%s&height=%s&srs=%s&bbox=%s,%s,%s,%s" % (self.tile_width, self.tile_height, self.proj, a, b, c, d)
else:
return self.server_url.replace("{quadkey}", self.ConstructQuadkey(x, y))
def ConstructTileUrl (self, x, y):
if self.tile_mode == "WMS":
a,b,c,d = projections.from4326(projections.bbox_by_tile(self.zoom, x, y, self.proj), self.proj)
return self.wms_url + "width=%s&height=%s&srs=%s&bbox=%s,%s,%s,%s" % (self.tile_width, self.tile_height, self.proj, a,b,c,d)
else:
return self.wms_url + "z=%s&x=%s&y=%s&width=%s&height=%s" % (self.zoom-1, x, y, self.tile_width, self.tile_height)
def ConstructTileUrl (self, x, y):
a, b, c, d = projections.from4326(projections.bbox_by_tile(self.zoom, x, y, self.proj), self.proj)
return self.wms_url + "width=%s&height=%s&srs=%s&bbox=%s,%s,%s,%s" % (self.tile_width, self.tile_height, self.proj, a, b, c, d)
def twms_main(data):
"""
Do main TWMS work.
data - dictionary of params.
returns (error_code, content_type, resp)
"""
start_time = datetime.datetime.now()
content_type = "text/html"
resp = ""
srs = data.get("srs", "EPSG:4326")
gpx = data.get("gpx", "").split(",")
if gpx == ['']:
gpx = []
wkt = data.get("wkt", "")
trackblend = float(data.get("trackblend", "0.5"))
color = data.get("color", data.get("colour", "")).split(",")
track = False
tracks = []
if len(gpx) == 0:
req_bbox = projections.from4326(
(27.6518898, 53.8683186, 27.6581944, 53.8720359), srs)
else:
for g in gpx:
local_gpx = config.gpx_cache + "%s.gpx" % g
if not os.path.exists(config.gpx_cache):
os.makedirs(config.gpx_cache)
if not os.path.exists(local_gpx):
urllib.urlretrieve(
"http://www.openstreetmap.org/trace/%s/data" % g,
local_gpx)
if not track:
track = GPXParser(local_gpx)
req_bbox = projections.from4326(track.bbox, srs)
else:
track = GPXParser(local_gpx)
req_bbox = bbox.add(req_bbox,
projections.from4326(track.bbox, srs))
tracks.append(track)
req_type = data.get("request", "GetMap")
version = data.get("version", "1.1.1")
ref = data.get("ref", config.service_url)
if req_type == "GetCapabilities":
content_type, resp = capabilities.get(version, ref)
return (OK, content_type, resp)
layer = data.get("layers", config.default_layers).split(",")
if ("layers" in data) and not layer[0]:
layer = ["transparent"]
if req_type == "GetCorrections":
points = data.get("points", data.get("POINTS", "")).split("=")
resp = ""
points = [a.split(",") for a in points]
points = [(float(a[0]), float(a[1])) for a in points]
req.content_type = "text/plain"
for lay in layer:
for point in points:
resp += "%s,%s;" % tuple(
correctify.rectify(config.layers[lay], point))
resp += "\n"
return (OK, content_type, resp)
force = data.get("force", "")
if force != "":
force = force.split(",")
force = tuple(force)
filt = data.get("filt", "")
if filt != "":
filt = filt.split(",")
filt = tuple(filt)
if layer == [""]:
content_type = "text/html"
resp = overview.html(ref)
return (OK, content_type, resp)
format = data.get("format", config.default_format).lower()
format = formats.get("image/" + format, format)
format = formats.get(format, format)
if format not in formats.values():
return (ERROR, content_type, "Invalid format")
content_type = mimetypes[format]
width = 0
height = 0
resp_cache_path, resp_ext = "", ""
if req_type == "GetTile":
width = 256
height = 256
height = int(data.get("height", height))
width = int(data.get("width", width))
srs = data.get("srs", "EPSG:3857")
x = int(data.get("x", 0))
y = int(data.get("y", 0))
z = int(data.get("z", 1)) + 1
if "cache_tile_responses" in dir(config) and not wkt and (len(gpx)
== 0):
if (srs, tuple(layer), filt, width, height, force,
format) in config.cache_tile_responses:
resp_cache_path, resp_ext = config.cache_tile_responses[(
srs, tuple(layer), filt, width, height, force, format)]
resp_cache_path = resp_cache_path + "/%s/%s/%s.%s" % (
z - 1, x, y, resp_ext)
if os.path.exists(resp_cache_path):
return (OK, content_type, open(resp_cache_path,
"r").read())
if len(layer) == 1:
if layer[0] in config.layers:
if config.layers[layer[0]][
"proj"] == srs and width is 256 and height is 256 and not filt and not force and not correctify.has_corrections(
config.layers[layer[0]]):
local = config.tiles_cache + config.layers[
layer[0]]["prefix"] + "/z%s/%s/x%s/%s/y%s." % (
z, x / 1024, x, y / 1024, y)
ext = config.layers[layer]["ext"]
adds = ["", "ups."]
for add in adds:
if os.path.exists(local + add + ext):
tile_file = open(local + add + ext, "r")
resp = tile_file.read()
return (OK, content_type, resp)
req_bbox = projections.from4326(projections.bbox_by_tile(z, x, y, srs),
srs)
if data.get("bbox", None):
req_bbox = tuple(map(float, data.get("bbox", req_bbox).split(",")))
req_bbox = projections.to4326(req_bbox, srs)
req_bbox, flip_h = bbox.normalize(req_bbox)
box = req_bbox
#print(req_bbox, file=sys.stderr)
#sys.stderr.flush()
height = int(data.get("height", height))
width = int(data.get("width", width))
width = min(width, config.max_width)
height = min(height, config.max_height)
if (width == 0) and (height == 0):
width = 350
# layer = layer.split(",")
imgs = 1.
ll = layer.pop(0)
if ll[-2:] == "!c":
ll = ll[:-2]
if wkt:
wkt = "," + wkt
wkt = correctify.corr_wkt(config.layers[ll]) + wkt
srs = config.layers[ll]["proj"]
try:
result_img = getimg(box, srs, (height, width), config.layers[ll],
start_time, force)
except KeyError:
result_img = Image.new("RGBA", (width, height))
#width, height = result_img.size
for ll in layer:
if ll[-2:] == "!c":
ll = ll[:-2]
if wkt:
wkt = "," + wkt
wkt = correctify.corr_wkt(config.layers[ll]) + wkt
srs = config.layers[ll]["proj"]
im2 = getimg(box, srs, (height, width), config.layers[ll], start_time,
force)
if "empty_color" in config.layers[ll]:
ec = ImageColor.getcolor(config.layers[ll]["empty_color"], "RGBA")
sec = set(ec)
if "empty_color_delta" in config.layers[ll]:
delta = config.layers[ll]["empty_color_delta"]
for tr in range(-delta, delta):
for tg in range(-delta, delta):
for tb in range(-delta, delta):
if (ec[0] + tr) >= 0 and (ec[0] + tr) < 256 and (
ec[1] + tr
) >= 0 and (ec[1] + tr) < 256 and (
ec[2] + tr) >= 0 and (ec[2] + tr) < 256:
sec.add((ec[0] + tr, ec[1] + tg, ec[2] + tb,
ec[3]))
i2l = im2.load()
for x in range(0, im2.size[0]):
for y in range(0, im2.size[1]):
t = i2l[x, y]
if t in sec:
i2l[x, y] = (t[0], t[1], t[2], 0)
if not im2.size == result_img.size:
im2 = im2.resize(result_img.size, Image.ANTIALIAS)
im2 = Image.composite(im2, result_img,
im2.split()[3]) # imgs/(imgs+1.))
if "noblend" in force:
result_img = im2
else:
result_img = Image.blend(im2, result_img, 0.5)
imgs += 1.
##Applying filters
result_img = filter.raster(result_img, filt, req_bbox, srs)
#print(wkt, file=sys.stderr)
#sys.stderr.flush()
if wkt:
result_img = drawing.wkt(wkt, result_img, req_bbox, srs,
color if len(color) > 0 else None, trackblend)
if len(gpx) > 0:
last_color = None
c = iter(color)
for track in tracks:
try:
last_color = c.next()
except StopIteration:
pass
result_img = drawing.gpx(track, result_img, req_bbox, srs,
last_color, trackblend)
if flip_h:
result_img = ImageOps.flip(result_img)
image_content = BytesIO()
if format == "JPEG":
try:
result_img.save(image_content,
format,
quality=config.output_quality,
progressive=config.output_progressive)
except IOError:
result_img.save(image_content,
format,
quality=config.output_quality)
elif format == "PNG":
result_img.save(image_content,
format,
progressive=config.output_progressive,
optimize=config.output_optimize)
elif format == "GIF":
result_img.save(image_content,
format,
quality=config.output_quality,
progressive=config.output_progressive)
else: ## workaround for GIF
result_img = result_img.convert("RGB")
result_img.save(image_content,
format,
quality=config.output_quality,
progressive=config.output_progressive)
resp = image_content.getvalue()
if resp_cache_path:
try:
"trying to create local cache directory, if it doesn't exist"
os.makedirs("/".join(resp_cache_path.split("/")[:-1]))
except OSError:
pass
try:
a = open(resp_cache_path, "w")
a.write(resp)
a.close()
except (OSError, IOError):
print("error saving response answer to file %s." %
(resp_cache_path),
file=sys.stderr)
sys.stderr.flush()
return (OK, content_type, resp)
def tile_image(layer,
z,
x,
y,
start_time,
again=False,
trybetter=True,
real=False):
"""
Returns asked image.
again - is this a second pass on this tile?
trybetter - should we try to combine this tile from better ones?
real - should we return the tile even in not good quality?
"""
x = x % (2**(z - 1))
if y < 0 or y >= (2**(z - 1)):
return None
if not bbox.bbox_is_in(projections.bbox_by_tile(z, x, y, layer["proj"]),
layer.get("data_bounding_box", config.default_bbox),
fully=False):
return None
global cached_objs, cached_hist_list
if "prefix" in layer:
if (layer["prefix"], z, x, y) in cached_objs:
return cached_objs[(layer["prefix"], z, x, y)]
if layer.get("cached", True):
local = config.tiles_cache + layer[
"prefix"] + "/z%s/%s/x%s/%s/y%s." % (z, x / 1024, x, y / 1024, y)
ext = layer["ext"]
if "cache_ttl" in layer:
for ex in [ext, "dsc." + ext, "ups." + ext, "tne"]:
f = local + ex
if os.path.exists(f):
if (os.stat(f).st_mtime <
(time.time() - layer["cache_ttl"])):
os.remove(f)
gpt_image = False
try:
"trying to create local cache directory, if it doesn't exist"
os.makedirs("/".join(local.split("/")[:-1]))
except OSError:
pass
if not os.path.exists(local + "tne") and not os.path.exists(local +
"lock"):
if os.path.exists(local + ext): # First, look for tile in cache
try:
im1 = Image.open(local + ext)
im1.is_ok = True
return im1
except IOError:
if os.path.exists(local + "lock"):
return None
else:
os.remove(local +
ext) # # Cached tile is broken - remove it
if layer["scalable"] and (
z < layer.get("max_zoom", config.default_max_zoom)
) and trybetter: # Second, try to glue image of better ones
if os.path.exists(local + "ups." + ext):
try:
im = Image.open(local + "ups." + ext)
im.is_ok = True
return im
except IOError:
pass
ec = ImageColor.getcolor(
layer.get("empty_color", config.default_background),
"RGBA")
ec = (ec[0], ec[1], ec[2], 0)
im = Image.new("RGBA", (512, 512), ec)
im1 = tile_image(layer, z + 1, x * 2, y * 2, start_time)
if im1:
im2 = tile_image(layer, z + 1, x * 2 + 1, y * 2,
start_time)
if im2:
im3 = tile_image(layer, z + 1, x * 2, y * 2 + 1,
start_time)
if im3:
im4 = tile_image(layer, z + 1, x * 2 + 1,
y * 2 + 1, start_time)
if im4:
im.paste(im1, (0, 0))
im.paste(im2, (256, 0))
im.paste(im3, (0, 256))
im.paste(im4, (256, 256))
im = im.resize((256, 256), Image.ANTIALIAS)
if layer.get("cached", True):
try:
im.save(local + "ups." + ext)
except IOError:
pass
im.is_ok = True
return im
if not again:
if "fetch" in layer:
delta = (datetime.datetime.now() - start_time)
delta = delta.seconds + delta.microseconds / 1000000.
if (config.deadline > delta) or (z < 4):
im = fetchers.fetch(z, x, y,
layer) # Try fetching from outside
if im:
im.is_ok = True
return im
if real and (z > 1):
im = tile_image(layer,
z - 1,
int(x / 2),
int(y / 2),
start_time,
again=False,
trybetter=False,
real=True)
if im:
im = im.crop((128 * (x % 2), 128 * (y % 2),
128 * (x % 2) + 128, 128 * (y % 2) + 128))
im = im.resize((256, 256), Image.BILINEAR)
im.is_ok = False
return im
else:
if "fetch" in layer:
delta = (datetime.datetime.now() - start_time)
delta = delta.seconds + delta.microseconds / 1000000.
if (config.deadline > delta) or (z < 4):
im = fetchers.fetch(z, x, y,
layer) # Try fetching from outside
if im:
im.is_ok = True
return im
def twms_main(data):
"""
Do main TWMS work.
data - dictionary of params.
returns (error_code, content_type, resp)
"""
start_time = datetime.datetime.now()
content_type = "text/html"
resp = ""
srs = data.get("srs", "EPSG:4326")
gpx = data.get("gpx","").split(",")
wkt = data.get("wkt","")
trackblend = float(data.get("trackblend","0.5"))
color = data.get("color",data.get("colour","")).split(",")
track = False
tracks = []
if len(gpx) == 0:
req_bbox = projections.from4326((27.6518898,53.8683186,27.6581944,53.8720359), srs)
else:
for g in gpx:
local_gpx = config.gpx_cache + "%s.gpx" % g
if not os.path.exists (config.gpx_cache):
os.makedirs(config.gpx_cache)
if not os.path.exists (local_gpx):
urllib.urlretrieve ("http://www.openstreetmap.org/trace/%s/data" % g, local_gpx)
if not track:
track = GPXParser(local_gpx)
req_bbox = projections.from4326(track.bbox, srs)
else:
track = GPXParser(local_gpx)
req_bbox = bbox.add(req_bbox, projections.from4326(track.bbox, srs))
tracks.append(track)
req_type = data.get("request","GetMap")
version = data.get("version","1.1.1")
ref = data.get("ref",config.service_url)
if req_type == "GetCapabilities":
content_type, resp = capabilities.get(version, ref)
return (OK, content_type, resp)
layer = data.get("layers",config.default_layers).split(",")
if ("layers" in data) and not layer[0]:
layer = ["transparent"]
if req_type == "GetCorrections":
points = data.get("points",data.get("POINTS", "")).split("=")
resp = ""
points = [a.split(",") for a in points]
points = [(float(a[0]), float(a[1])) for a in points]
req.content_type = "text/plain"
for lay in layer:
for point in points:
resp += "%s,%s;"% tuple(correctify.rectify(config.layers[lay], point))
resp += "\n"
return (OK, content_type, resp)
force = tuple(data.get("force","").split(","))
filt = tuple(data.get("filter","").split(","))
if layer == [""] :
content_type = "text/html"
resp = overview.html(ref)
return (OK, content_type, resp)
format = data.get("format", config.default_format).lower()
format = formats.get("image/" + format, format)
format = formats.get(format, format)
if format not in formats.values():
return (ERROR, content_type, "Invalid format")
content_type = mimetypes[format]
width=0
height=0
resp_cache_path, resp_ext = "",""
if req_type == "GetTile":
width=256
height=256
height = int(data.get("height",height))
width = int(data.get("width",width))
srs = data.get("srs", "EPSG:3857")
x = int(data.get("x",0))
y = int(data.get("y",0))
z = int(data.get("z",1)) + 1
if "cache_tile_responses" in dir(config) and not wkt and (len(gpx) == 0):
if (srs, tuple(layer), filt, width, height, force, format) in config.cache_tile_responses:
resp_cache_path, resp_ext = config.cache_tile_responses[(srs, tuple(layer), filt, width, height, force, format)]
resp_cache_path = resp_cache_path+"/%s/%s/%s.%s"%(z-1,x,y,resp_ext)
if os.path.exists(resp_cache_path):
return (OK, content_type, open(resp_cache_path, "r").read())
if len(layer) == 1:
if layer[0] in config.layers:
if config.layers[layer[0]]["proj"] == srs and width is 256 and height is 256 and not filt and not force and not correctify.has_corrections(layer[0]):
local = config.tiles_cache + config.layers[layer[0]]["prefix"] + "/z%s/%s/x%s/%s/y%s."%(z, x/1024, x, y/1024,y)
ext = config.layers[layer]["ext"]
adds = ["","ups."]
for add in adds:
if os.path.exists(local+add+ext):
tile_file = open(local+add+ext, "r")
resp = tile_file.read()
return (OK, content_type, resp)
req_bbox = projections.from4326(projections.bbox_by_tile(z,x,y,srs),srs)
if data.get("bbox",None):
req_bbox = tuple(map(float,data.get("bbox",req_bbox).split(",")))
req_bbox = projections.to4326(req_bbox, srs)
req_bbox, flip_h = bbox.normalize(req_bbox)
box = req_bbox
#print >> sys.stderr, req_bbox
#sys.stderr.flush()
height = int(data.get("height",height))
width = int(data.get("width",width))
width = min(width, config.max_width)
height = min(height, config.max_height)
if (width == 0) and (height == 0):
width = 350
# layer = layer.split(",")
imgs = 1.
ll = layer.pop(0)
if ll[-2:] == "!c":
ll = ll[:-2]
if wkt:
wkt = ","+wkt
wkt = correctify.corr_wkt(config.layers[ll]) + wkt
srs = config.layers[ll]["proj"]
try:
result_img = getimg(box,srs, (height, width), config.layers[ll], start_time, force)
except KeyError:
result_img = Image.new("RGBA", (width,height))
#width, height = result_img.size
for ll in layer:
if ll[-2:] == "!c":
ll = ll[:-2]
if wkt:
wkt = ","+wkt
wkt = correctify.corr_wkt(config.layers[ll]) + wkt
srs = config.layers[ll]["proj"]
im2 = getimg(box, srs,(height, width), config.layers[ll], start_time, force)
if "empty_color" in config.layers[ll]:
ec = ImageColor.getcolor(config.layers[ll]["empty_color"], "RGBA")
sec = set(ec)
if "empty_color_delta" in config.layers[ll]:
delta = config.layers[ll]["empty_color_delta"]
for tr in range(-delta, delta):
for tg in range(-delta, delta):
for tb in range(-delta, delta):
if (ec[0]+tr) >= 0 and (ec[0]+tr) < 256 and (ec[1]+tr) >= 0 and (ec[1]+tr) < 256 and(ec[2]+tr) >= 0 and (ec[2]+tr) < 256:
sec.add((ec[0]+tr,ec[1]+tg,ec[2]+tb,ec[3]))
i2l = im2.load()
for x in range(0,im2.size[0]):
for y in range(0,im2.size[1]):
t = i2l[x,y]
if t in sec:
i2l[x,y] = (t[0],t[1],t[2],0)
if not im2.size == result_img.size:
im2 = im2.resize(result_img.size, Image.ANTIALIAS)
im2 = Image.composite(im2,result_img, im2.split()[3]) # imgs/(imgs+1.))
if "noblend" in force:
result_img = im2
else:
result_img = Image.blend(im2, result_img, 0.5)
imgs += 1.
##Applying filters
result_img = filter.raster(result_img, filt, req_bbox, srs)
#print >> sys.stderr, wkt
#sys.stderr.flush()
if wkt:
result_img = drawing.wkt(wkt, result_img, req_bbox, srs, color if len(color) > 0 else None, trackblend)
if len(gpx) > 0:
last_color = None
c = iter(color)
for track in tracks:
try:
last_color = c.next();
except StopIteration:
pass
result_img = drawing.gpx(track, result_img, req_bbox, srs, last_color, trackblend)
if flip_h:
result_img = ImageOps.flip(result_img)
image_content = StringIO.StringIO()
if format == "JPEG":
try:
result_img.save(image_content, format, quality=config.output_quality, progressive=config.output_progressive)
except IOError:
result_img.save(image_content, format, quality=config.output_quality)
elif format == "PNG":
result_img.save(image_content, format, progressive=config.output_progressive, optimize =config.output_optimize)
elif format == "GIF":
result_img.save(image_content, format, quality=config.output_quality, progressive=config.output_progressive)
else: ## workaround for GIF
result_img = result_img.convert("RGB")
result_img.save(image_content, format, quality=config.output_quality, progressive=config.output_progressive)
resp = image_content.getvalue()
if resp_cache_path:
try:
"trying to create local cache directory, if it doesn't exist"
os.makedirs("/".join(resp_cache_path.split("/")[:-1]))
except OSError:
pass
try:
a = open(resp_cache_path, "w")
a.write(resp)
a.close()
except (OSError, IOError):
print >> sys.stderr, "error saving response answer to file %s." % (resp_cache_path)
sys.stderr.flush()
return (OK, content_type, resp)
def tile_image (layer, z, x, y, start_time, again=False, trybetter = True, real = False):
"""
Returns asked image.
again - is this a second pass on this tile?
trybetter - should we try to combine this tile from better ones?
real - should we return the tile even in not good quality?
"""
x = x % (2 ** (z-1))
if y<0 or y >= (2 ** (z-1)):
return None
if not bbox.bbox_is_in(projections.bbox_by_tile(z,x,y,layer["proj"]), layer.get("data_bounding_box",config.default_bbox), fully=False):
return None
global cached_objs, cached_hist_list
if "prefix" in layer:
if (layer["prefix"], z, x, y) in cached_objs:
return cached_objs[(layer["prefix"], z, x, y)]
if layer.get("cached", True):
local = config.tiles_cache + layer["prefix"] + "/z%s/%s/x%s/%s/y%s."%(z, x/1024, x, y/1024,y)
ext = layer["ext"]
if "cache_ttl" in layer:
for ex in [ext, "dsc."+ext, "ups."+ext, "tne"]:
f = local+ex
if os.path.exists(f):
if (os.stat(f).st_mtime < (time.time()-layer["cache_ttl"])):
os.remove(f)
gpt_image = False
try:
"trying to create local cache directory, if it doesn't exist"
os.makedirs("/".join(local.split("/")[:-1]))
except OSError:
pass
if not os.path.exists(local+"tne") and not os.path.exists(local+"lock"):
if os.path.exists(local+ext): # First, look for tile in cache
try:
im1 = Image.open(local+ext)
im1.is_ok = True
return im1
except IOError:
if os.path.exists(local+"lock"):
return None
else:
os.remove(local+ext) # # Cached tile is broken - remove it
if layer["scalable"] and (z<layer.get("max_zoom", config.default_max_zoom)) and trybetter: # Second, try to glue image of better ones
if os.path.exists(local+"ups."+ext):
try:
im = Image.open(local+"ups."+ext)
im.is_ok = True
return im
except IOError:
pass
ec = ImageColor.getcolor(layer.get("empty_color", config.default_background), "RGBA")
ec = (ec[0],ec[1],ec[2],0)
im = Image.new("RGBA", (512, 512), ec)
im1 = tile_image(layer, z+1,x*2,y*2, start_time)
if im1:
im2 = tile_image(layer, z+1,x*2+1,y*2, start_time)
if im2:
im3 = tile_image(layer, z+1,x*2,y*2+1, start_time)
if im3:
im4 = tile_image(layer, z+1,x*2+1,y*2+1, start_time)
if im4:
im.paste(im1,(0,0))
im.paste(im2,(256,0))
im.paste(im3,(0,256))
im.paste(im4,(256,256))
im = im.resize((256,256),Image.ANTIALIAS)
if layer.get("cached", True):
try:
im.save(local+"ups."+ext)
except IOError:
pass
im.is_ok = True
return im
if not again:
if "fetch" in layer:
delta = (datetime.datetime.now() - start_time)
delta = delta.seconds + delta.microseconds/1000000.
if (config.deadline > delta) or (z < 4):
im = fetchers.fetch(z,x,y,layer) # Try fetching from outside
if im:
im.is_ok = True
return im
if real and (z>1):
im = tile_image(layer, z-1, int(x/2), int(y/2), start_time, again=False, trybetter=False, real=True)
if im:
im = im.crop((128 * (x % 2), 128 * (y % 2), 128 * (x % 2) + 128, 128 * (y % 2) + 128))
im = im.resize((256,256), Image.BILINEAR)
im.is_ok = False
return im
else:
if "fetch" in layer:
delta = (datetime.datetime.now() - start_time)
delta = delta.seconds + delta.microseconds/1000000.
if (config.deadline > delta) or (z < 4):
im = fetchers.fetch(z,x,y,layer) # Try fetching from outside
if im:
im.is_ok = True
return im
