def compose_and_save(key, tile, x, y): # but this has to be done in a transaction - otherwise the different threads will overwrite each other's progress on the shared mapimage
   mapimage = db.get(key)
   input_tuples = [(tile.image_out(), x, y, 1.0, images.TOP_LEFT)]
   if mapimage.img:
     input_tuples.append((mapimage.img, 0, 0, 1.0, images.TOP_LEFT))
   img = images.composite(inputs=input_tuples, width=mapimage.width, height=mapimage.height, color=0, output_encoding=images.PNG) # redraw main image every time to show progress
   mapimage.img = db.Blob(img)
   mapimage.tiles_remaining -= 1
   mapimage.last_updated = datetime.now()
   mapimage.put()
示例#2
0
          assert raw.count('/') == 6, "%d /'s" % raw.count('/')
          foo, bar, layer, zoom, xy, category, metro = raw.split('/')
          assert xy.count(',') == 1, "%d /'s" % xy.count(',')
          x, y = xy.split(',')
          assert zoom.isdigit() and x.isdigit() and y.isdigit() and category.isdigit() and metro.isdigit(), "not digits"
          zoom = int(zoom)
          x = int(x)
          y = int(y)
          category = int(category)
          metro = int(metro)
          assert 0 <= zoom <= (consts.MAX_ZOOM - 1), "bad zoom: %d" % zoom
      except AssertionError, err:
          log.error(err.args[0])
          self.respondError(err)
          return
    else:
      self.respondError("Invalid path")
      return

    tile = Tile(layer, zoom, x, y, category, metro)
    log.info("Start-B1: %2.2f" % (time.clock() - st))

    self.response.headers['Content-Type'] = "image/png"
    #log.info("Building image...")
    img_data = tile.image_out()
    log.info("Start-B2: %2.2f" % (time.clock() - st))
    
    #log.info("Writing out image...")
    self.response.out.write(img_data)
    log.info("Start-End: %2.2f" % (time.clock() - st))
示例#3
0
                assert xy.count(',') == 1, "%d /'s" % xy.count(',')
                x, y = xy.split(',')
                assert zoom.isdigit() and x.isdigit() and y.isdigit(
                ) and category.isdigit() and metro.isdigit(), "not digits"
                zoom = int(zoom)
                x = int(x)
                y = int(y)
                category = int(category)
                metro = int(metro)
                assert 0 <= zoom <= (consts.MAX_ZOOM -
                                     1), "bad zoom: %d" % zoom
            except AssertionError, err:
                log.error(err.args[0])
                self.respondError(err)
                return
        else:
            self.respondError("Invalid path")
            return

        tile = Tile(layer, zoom, x, y, category, metro)
        log.info("Start-B1: %2.2f" % (time.clock() - st))

        self.response.headers['Content-Type'] = "image/png"
        #log.info("Building image...")
        img_data = tile.image_out()
        log.info("Start-B2: %2.2f" % (time.clock() - st))

        #log.info("Writing out image...")
        self.response.out.write(img_data)
        log.info("Start-End: %2.2f" % (time.clock() - st))