def loadTile(self, z, tx, ty):
filecache = "%s/%s/%d/%d/%d.%s" % (self.cache_path, self.source, z, tx, ty, self.extensions[self.filetype])
url = tilenames.getTileUrl(tx, ty, z, self.source, self.filetype.lower())
try:
img = Image.open(filecache)
# print "opened image:", filecache
except IOError:
ready = False
while not ready:
try:
print "download", filecache, "to cache..."
# print url
tmp = urllib.urlretrieve(url)
img = Image.open(tmp[0])
if self.source == "landsat":
img = img.resize((256, 256), Image.ANTIALIAS)
myutils.createPath(filecache)
if self.filetype != "JPEG":
img.save(filecache, self.filetype)
else:
img.save(filecache, self.filetype, quality=self.quality)
ready = True
except KeyboardInterrupt:
exit(0)
except:
print "Unexpected error: %s" % sys.exc_info()[0]
time.sleep(1)
ready = False
return img
def saveImage(self):
scan_file = self.getFileName()
myutils.createPath(scan_file)
print "saving file:", scan_file
if self.filetype == "JPEG":
self.scan_img.save(scan_file,self.filetype,quality=self.quality)
else:
self.scan_img.save(scan_file,self.filetype)
self.scan_img = Image.new("RGB",(self.width,self.height),(255,255,255))