def _xyhs(lls, off=True, name='llis'):
# map (lat, lon, h) to (x, y, h) in radians, offset as
# x: 0 <= lon <= PI2, y: 0 <= lat <= PI if off is True
# else x: -PI <= lon <= PI, y: -PI_2 <= lat <= PI_2
if off:
xf = yf = 0.0
else: # undo offset
xf, yf = PI, PI_2
try:
for i, ll in enumerate(lls):
yield (max(0.0, radiansPI2(ll.lon + 180.0)) - xf), \
(max(0.0, radiansPI( ll.lat + 90.0)) - yf), ll.height
except AttributeError as x:
raise HeightError(_item_sq(name, i), ll, txt=str(x))
def _xyhs(lls, off=True):
# map (lat, lon, h) to (x, y, h) in radians, offset as
# x: 0 <= lon <= PI2, y: 0 <= lat <= PI if off is True
# else x: -PI <= lon <= PI, y: -PI_2 <= lat <= PI_2
if off:
xf = yf = 0.0
else: # undo offset
xf, yf = PI, PI_2
try:
for ll in lls:
yield (max(0.0, radiansPI2(ll.lon + 180.0)) - xf), \
(max(0.0, radiansPI( ll.lat + 90.0)) - yf), ll.height
except AttributeError as x:
raise HeightError('%s: %r' % (x, ll))