def getplacement(self,x,y,level,fetch):
(name,url)=self.provider_url(x,y,level)
if name in self.placementcache:
# Already created
placement=self.placementcache[name]
elif fetch:
# Make a new one. We could also do this if the image file is available, but don't since layout is expensive.
(north,west)=self.xy2latlon(x,y,level)
(south,east)=self.xy2latlon(x+1,y+1,level)
placement=DrapedImage(name, 65535, [[Node([west,north,0,1]),Node([east,north,1,1]),Node([east,south,1,0]),Node([west,south,0,0])]])
placement.load(self.canvas.lookup, self.canvas.defs, self.canvas.vertexcache)
self.placementcache[name]=placement
# Initiate fetch of image and do layout. Prioritise more detail.
self.q.put((self.initplacement, (placement,name,url)))
else:
placement=None
# Load it if it's not loaded but is ready to be
if placement and not placement.islaidout() and Polygon.islaidout(placement):
try:
if __debug__: clock=time.clock()
filename=self.filecache.get(name) # downloaded image or None
self.canvas.vertexcache.allocate_dynamic(placement, True) # couldn't do this in thread context
placement.definition.texture=self.canvas.vertexcache.texcache.get(filename, wrap=False, downsample=False, fixsize=True)
if __debug__: print "%6.3f time in imagery load for %s" % (time.clock()-clock, placement.name)
assert placement.islaidout()
except:
if __debug__: print_exc()
# Some failure - perhaps corrupted image?
placement.clearlayout()
placement=None
self.placementcache[name]=None
return placement
def getplacement(self, x, y, level, fetch):
(name, url) = self.provider_url(x, y, level)
if name in self.placementcache:
# Already created
placement = self.placementcache[name]
elif fetch:
# Make a new one. We could also do this if the image file is available, but don't since layout is expensive.
(north, west) = self.xy2latlon(x, y, level)
(south, east) = self.xy2latlon(x + 1, y + 1, level)
placement = DrapedImage(name, 65535, [[
Node([west, north, 0, 1]),
Node([east, north, 1, 1]),
Node([east, south, 1, 0]),
Node([west, south, 0, 0])
]])
placement.load(self.canvas.lookup, self.canvas.defs,
self.canvas.vertexcache)
self.placementcache[name] = placement
# Initiate fetch of image and do layout. Prioritise more detail.
self.q.put((self.initplacement, (placement, name, url)))
else:
placement = None
# Load it if it's not loaded but is ready to be
if placement and not placement.islaidout() and Polygon.islaidout(
placement):
try:
if __debug__: clock = time.clock()
filename = self.filecache.get(name) # downloaded image or None
self.canvas.vertexcache.allocate_dynamic(
placement, True) # couldn't do this in thread context
placement.definition.texture = self.canvas.vertexcache.texcache.get(
filename, wrap=False, downsample=False, fixsize=True)
if __debug__:
print "%6.3f time in imagery load for %s" % (
time.clock() - clock, placement.name)
assert placement.islaidout()
except:
if __debug__: print_exc()
# Some failure - perhaps corrupted image?
placement.clearlayout()
placement = None
self.placementcache[name] = None
return placement
