def process(self, tile):
#from lat,lng bbox to mapnik bbox
p0 = self.map_proj.forward(Coord(tile.bbox[0][1],tile.bbox[0][0]))
p1 = self.map_proj.forward(Coord(tile.bbox[1][1],tile.bbox[1][0]))
bbox = Box2d(p0,p1)
image = Image(tile.size[0],tile.size[1])
features = None
result = self._check_region(bbox)
if result is not None:
if result[0]:
result[1].resize(image.width(),image.height())
result[1].zoom_to_box(bbox)
self.adjust_language(result(1), tile.lang)
render(result[1],image)
features = self.save_rendered_metadata(result[1], tile.size, tile.dimensions)
else :
mq_logging.info("COMPOSITE MAP: %s" % result[2])
default_image = Image(tile.size[0],tile.size[1])
# mask style
self.mask_map.resize(image.width(),image.height())
self.mask_map.zoom_to_box(bbox)
self.adjust_language(self.mask_map, tile.lang)
render(self.mask_map,image)
# default style
self.default_map.resize(default_image.width(),default_image.height())
self.default_map.zoom_to_box(bbox)
self.adjust_language(self.default_map, tile.lang)
render(self.default_map,default_image)
features = self.save_rendered_metadata(self.default_map, tile.size, tile.dimensions)
# composite DST_OUT
default_image.composite(image,CompositeOp.dst_out)
# current style
result[1].resize(image.width(),image.height())
result[1].zoom_to_box(bbox)
image.set_alpha(0)
self.adjust_language(result[1], tile.lang)
render(result[1],image)
if features is not None:
features.features.extend(self.save_rendered_metadata(result[1], tile.size, tile.dimensions).features)
else:
features = self.save_rendered_metadata(result[1], tile.size, tile.dimensions)
# blend
image.blend(0,0,default_image,1.0)
else :
# use default style
self.default_map.resize(image.width(),image.height())
self.default_map.zoom_to_box(bbox)
self.adjust_language(self.default_map, tile.lang)
render(self.default_map,image)
features = self.save_rendered_metadata(self.default_map, tile.size, tile.dimensions)
#convert to PIL image
image = PIL.Image.frombuffer('RGBA', (image.width(), image.height()), image.tostring(), 'raw', 'RGBA', 0, 3)
return RenderResult.from_image(tile, image, features)
def process(self, tile):
z = str(tile.z)
x_range = range( tile.x, tile.x + tile.dimensions[0] )
y_range = range( tile.y, tile.y + tile.dimensions[1] )
urls = [ [self.url % {'z':z, 'x':str(x), 'y':str(y)}, x - tile.x, y - tile.y] for x in x_range for y in y_range ]
try:
subTiles = map(getTile, urls)
except Exception as detail:
mq_logging.error('Could not read tile from aerial source: %s' % str(detail))
raise
if len( subTiles ) < tile.dimensions[0] * tile.dimensions[1] :
mq_logging.warning("Result length too short, aborting")
return None, None
#
# make a composite image
#
features = None
image = PIL.Image.new( 'RGBA', tile.size )
for infoImage in subTiles:
imageSubTile = PIL.Image.open( StringIO.StringIO( infoImage[0] ) )
image.paste( imageSubTile, ( infoImage[1] * TILE_SIZE, infoImage[2] * TILE_SIZE ) )
return RenderResult.from_image(tile, image)
def process(self, tile):
#mq_logging.info(str(tile.bbox))
#http://mq-aerial-lm01.ihost.aol.com:8000/ter/z/x/y.png NOTE: file format ignored; PNG always returned
theURL = "http://%s:%d/ter/%d/%d/%d.png" % ( self.host, self.port, tile.z, tile.x, tile.y )
returnData = getTile( theURL )
if returnData is None or len(returnData) < 1:
return None, None
try:
image = PIL.Image.open( StringIO.StringIO( returnData ) )
except Exception as detail:
#use the land tile for places we dont have terrain
#image = self.blank
return None, None
#hand back the image
return RenderResult.from_image(tile, image)
