def showimg(self):
adimg, cksum = request.params['adimg'].split(",")
maptype = request.params['maptype']
variant = request.params['variant']
response.headers['Content-Type'] = 'image/png'
response.headers['Pragma'] = ''
response.headers['Cache-Control'] = 'max-age=120'
if maptype == 'chart':
return parse_landing_chart.get_chart_png(adimg, cksum)
else:
width, height = parse_landing_chart.get_width_height(adimg, cksum)
projs = meta.Session.query(AirportProjection).filter(
sa.and_(AirportProjection.user == session['user'],
AirportProjection.mapchecksum == cksum)).all()
assert len(projs) <= 1
if len(projs) == 1 and not all(
[x == 0 for x in projs[0].matrix[4:6]]):
matrix = projs[0].matrix
print "Using real projection", matrix
else:
#scale = number of pixels per latlon-increment
matrix = self.invent_matrix(cksum, variant)
A = matrix[0:4]
T = matrix[4:6]
transform = customproj.Transform(A, T)
llc = transform.to_latlon((width / 2, height / 2))
print "Center of map in pixels is on lat lon", llc
ll1 = transform.to_latlon((0, 0))
ll2 = transform.to_latlon((0, height))
ll3 = transform.to_latlon((width, height))
ll4 = transform.to_latlon((width, 0))
im = transform_map.get_png(width, height, ll1, ll2, ll3, ll4)
io = StringIO.StringIO()
im.save(io, format='png')
io.seek(0)
return io.read()
cksum = request.params.get("cksum")
if cksum == None:
cksum, proj = self.get_sel_cksum(chartname)
assert cksum
writeInt(0xaabb1234)
if version != 1 and version != 2:
print "bad version"
writeInt(2) #error, bad version
return None
if not self.checkpass():
print "badpassword"
writeInt(1) #error, bad pass
return None
width, height = parse_landing_chart.get_width_height(
chartname=chartname, cksum=cksum)
dummy, cksum0 = parse_landing_chart.get_chart(blobname=chartname,
cksum=cksum,
level=0)
assert cksum0 == cksum
proj = get_proj(cksum0)
if proj:
matrix = proj.matrix
else:
matrix = [0.0 for x in xrange(6)]
zeromat = all([abs(x) < 1e-13 for x in matrix])
writeInt(0) #no error
writeInt(version) #version
writeInt(5) #numlevels
