Exemplo n.º 1
0
 def fit_bounds(cls, bounds):
     """Fit bounds to tiles matching tileswide and tileshigh. 
     Returns corner tiles as a tuple."""
     for zoom in range(tilesetcls.maxzoom, tilesetcls.minzoom-1, -1):
         tl, br = tilesetcls.bounds2cornertiles(bounds, zoom)
         tw,th = tilesetcls.cornertiles2tiledims(tl, br)
         if tw > cls.tileswide or th > cls.tileshigh:
             continue
         else:
             break
     #tl, br = cls.fit_width(tl, br)
     #tl, br = cls.fit_height(tl, br)
     return (tl, br)
Exemplo n.º 2
0
 def fit_height(cls, tl, br):
     """Adjust corner tiles to fit target height."""
     tw, th = tilesetcls.cornertiles2tiledims(tl, br)
     zoom = tl.zoom
     for g in range(th, cls.tileshigh):
         if g % 2 :
             if tl.ytile > 0:
                 tl.ytile = tl.ytile - 1
             elif(br.ytile < 2**zoom-1):
                 br.ytile = br.ytile + 1
             else:
                 break
         else:
             if(br.ytile < 2**zoom-1):
                 br.ytile = br.ytile + 1
             elif tl.ytile > 0:
                 tl.ytile = tl.ytile - 1
             else:
                 break
     return (tl, br)
Exemplo n.º 3
0
 def fit_width(cls, tl, br):
     """Takes corner tiles and adjusts to fit target width of base map image."""
     tw, th = tilesetcls.cornertiles2tiledims(tl, br)
     zoom = tl.zoom
     for g in range(tw, cls.tileswide):
         if g % 2 :
             if tl.xtile > 0:
                 tl.xtile = tl.xtile - 1
             elif(br.xtile < 2**zoom-1):
                 br.xtile = br.xtile + 1
             else:
                 break
         else:
             if(br.xtile < 2**zoom-1):
                 br.xtile = br.xtile + 1
             elif tl.xtile > 0:
                 tl.xtile = tl.xtile - 1
             else:
                 break
     return (tl, br)