def gen_metatile(metatile_id, this_layer):
# renderlock.acquire()
z, x, y = metatile_id
z -= 3
wh = 2560
bb1 = projections.coords_by_tile(z, x - 0.125, y - 0.125, "EPSG:3857")
bb2 = projections.coords_by_tile(z, x + 1.125, y + 1.125, "EPSG:3857")
bbox = (bb1[0], bb2[1], bb2[0], bb1[1])
db = DataBackend()
res = RasterTile(wh, wh, 1, db, "EPSG:3857")
res.update_surface(bbox, z + 3, style)
f = NamedTemporaryFile()
f.close()
res.surface.write_to_png(f.name)
del res
del db
im = Image.open(f.name)
os.unlink(f.name)
im = im.convert("RGBA")
x *= 8
y *= 8
z += 3
ext = this_layer["ext"]
for i in range(x, x + 9):
for j in range(y, y + 9):
local = config.tiles_cache + this_layer["prefix"] + "/z%s/%s/x%s/%s/y%s." % (z, i / 1024, i, j / 1024, j)
box = (256 * (i - x + 1), 256 * (j - y + 1), 256 * (i - x + 2), 256 * (j - y + 2))
im1 = im.crop(box)
if not os.path.exists("/".join(local.split("/")[:-1])):
os.makedirs("/".join(local.split("/")[:-1]))
im1.save(local + ext)
del im1
def gen_metatile(metatile_id, this_layer):
# renderlock.acquire()
z, x, y = metatile_id
z -= 3
wh = 2560
bb1 = projections.coords_by_tile(z, x - 0.125, y - 0.125, "EPSG:3857")
bb2 = projections.coords_by_tile(z, x + 1.125, y + 1.125, "EPSG:3857")
bbox = (bb1[0], bb2[1], bb2[0], bb1[1])
db = DataBackend()
res = RasterTile(wh, wh, 1, db, "EPSG:3857")
res.update_surface(bbox, z + 3, style)
f = NamedTemporaryFile()
f.close()
res.surface.write_to_png(f.name)
del res
del db
im = Image.open(f.name)
os.unlink(f.name)
im = im.convert("RGBA")
x *= 8
y *= 8
z += 3
ext = this_layer["ext"]
for i in range(x, x + 9):
for j in range(y, y + 9):
local = config.tiles_cache + this_layer[
"prefix"] + "/z%s/%s/x%s/%s/y%s." % (z, i / 1024, i, j / 1024,
j)
box = (256 * (i - x + 1), 256 * (j - y + 1), 256 * (i - x + 2),
256 * (j - y + 2))
im1 = im.crop(box)
if not os.path.exists("/".join(local.split("/")[:-1])):
os.makedirs("/".join(local.split("/")[:-1]))
im1.save(local + ext)
del im1
def twms_main(req):
resp = ""
data = req
srs = data.get("srs", data.get("SRS", "EPSG:4326"))
content_type = "image/png"
#layer = data.get("layers",data.get("LAYERS", config.default_layers)).split(",")
width=0
height=0
req_bbox = ()
if data.get("bbox",data.get("BBOX",None)):
req_bbox = tuple(map(float,data.get("bbox",data.get("BBOX",req_bbox)).split(",")))
req_bbox = projections.to4326(req_bbox, srs)
req_bbox, flip_h = bbox.normalize(req_bbox)
box = req_bbox
height = int(data.get("height",data.get("HEIGHT",height)))
width = int(data.get("width",data.get("WIDTH",width)))
z = bbox.zoom_for_bbox (box, (height, width), {"proj":"EPSG:3857"}, min_zoom = 1, max_zoom = 25,max_size = (10000,10000))
res = RasterTile(width, height, z, db)
res.update_surface(box, z, style)
image_content = StringIO.StringIO()
res.surface.write_to_png(image_content)
resp = image_content.getvalue()
return (OK, content_type, resp)
def kothic_fetcher(z, x, y, this_layer):
if "max_zoom" in this_layer:
if z >= this_layer["max_zoom"]:
return None
bbox = projections.bbox_by_tile(z, x, y, "EPSG:3857")
db = DataBackend(path="/home/kom/osm/kothic/src/tiles")
res = RasterTile(256, 256, 1, db, "EPSG:3857")
res.update_surface(bbox, z, style)
f = NamedTemporaryFile()
f.close()
res.surface.write_to_png(f.name)
del res
del db
im = Image.open(f.name)
os.unlink(f.name)
im = im.convert("RGBA")
return im
def kothic_fetcher(z, x, y, this_layer):
if "max_zoom" in this_layer:
if z >= this_layer["max_zoom"]:
return None
bbox = projections.bbox_by_tile(z, x, y, "EPSG:3857")
db = DataBackend(path="/home/kom/osm/kothic/src/tiles")
res = RasterTile(256, 256, 1, db, "EPSG:3857")
res.update_surface(bbox, z, style)
f = NamedTemporaryFile()
f.close()
res.surface.write_to_png(f.name)
del res
del db
im = Image.open(f.name)
os.unlink(f.name)
im = im.convert("RGBA")
return im
svg = False
if svg:
import cairo
style = MapCSS(1, 19) #zoom levels
style.parse(open("styles/default.mapcss","r").read())
bbox = (27.115768874532,53.740327031764,28.028320754378,54.067187302158)
w,h = 630*4,364*4
z = 10
db = DataBackend()
#style = Styling()
res = RasterTile(w, h, z, db)
if svg:
file = open("test.svg", "wb")
res.surface = cairo.SVGSurface(file.name, w,h)
res.update_surface(bbox, z, style)
if not svg:
res.surface.write_to_png("test.png")
else:
res.surface.finish()
#from style import Styling
from mapcss import MapCSS
from render import RasterTile
svg = False
if svg:
import cairo
style = MapCSS(1, 19) #zoom levels
style.parse(open("styles/default.mapcss", "r").read())
bbox = (27.115768874532, 53.740327031764, 28.028320754378, 54.067187302158)
w, h = 630 * 4, 364 * 4
z = 10
db = DataBackend()
#style = Styling()
res = RasterTile(w, h, z, db)
if svg:
file = open("test.svg", "wb")
res.surface = cairo.SVGSurface(file.name, w, h)
res.update_surface(bbox, z, style)
if not svg:
res.surface.write_to_png("test.png")
else:
res.surface.finish()
self.callback = callback
self.onscreen = set()
self._singlethread = False
self._prerender = True
def __getitem__(self, (z, x, y), wait=False):
try:
# if "surface" in self.tiles[(z,x,y)] and not wait:
# self._callback((z,x,y), True)
print "Tiles count:", len(self.tiles)
return self.tiles[(z, x, y)]["surface"]
except:
self.tiles[(z, x, y)] = {
"tile":
RasterTile(self.tilewidth, self.tileheight, z,
self.data_backend)
}
self.tiles[(z, x, y)]["start_time"] = datetime.datetime.now()
if self._singlethread:
self.tiles[(z, x,
y)]["surface"] = self.tiles[(z, x,
y)]["tile"].surface
self.tiles[(z, x, y)]["tile"].update_surface(
projections.bbox_by_tile(z, x, y, "EPSG:3857"),
z,
self.style_backend,
lambda p=False: self._callback((z, x, y), p))
del self.tiles[(z, x, y)]["tile"]
else:
