def print_low_accuracy():
'''
xyp -> latlon -> xyp: low accuracy
'''
from cs_ll import latlon2xyp, xyp2latlon
from cart_ll import latlon2xyz, xyz2latlon
from cart_cs import xyp2xyz, xyz2xyp
#------------------------------------------------
# at the panel border, low_accuracy
#------------------------------------------------
xyp1 = (-0.57735026918962606, -0.53747283769483301, 1)
xyp2 = (-0.57735026918962495, -0.53747283769483301, 1)
latlon1 = xyp2latlon(*xyp1)
latlon2 = xyp2latlon(*xyp2)
xyp1_dict = latlon2xyp( *xyp2latlon(*xyp1) )
xyp2_dict = latlon2xyp( *xyp2latlon(*xyp2) )
print('')
print(repr(latlon1))
print(repr(latlon2))
print(repr(xyp1_dict[1]))
print(repr(xyp2_dict[1]))
#a_equal(xyp1_dict.keys(), [1,4])
#a_equal(xyp2_dict.keys(), [1,4])
xyz1 = xyp2xyz(*xyp1)
xyz2 = xyp2xyz(*xyp2)
xyp1_list = xyz2xyp(*xyz1)
xyp2_list = xyz2xyp(*xyz2)
print('')
print(repr(xyz1))
print(repr(xyz2))
print(repr(xyp1_dict[1]), xyp1_dict.keys())
print(repr(xyp2_dict[1]), xyp1_dict.keys())
a = 1/np.sqrt(3)
at1, at2 = a*np.tan(-np.pi/4), a*np.tan(np.pi/4)
print('')
print(repr(at1), repr(at2))
def xyp2latlon(x, y, panel, rotate_lat=RLAT, rotate_lon=RLON, R=1):
xyz = xyp2xyz(x, y, panel)
xr, yr, zr = xyz_rotate_reverse(xyz, rotate_lat, rotate_lon)
lat, lon = xyz2latlon(xr, yr, zr, R)
"""
print 'x=%.18f, y=%.18f'%(x,y)
print 'x=%.18f, y=%.18f, z=%.18f'%xyz
print 'xr=%.18f, yr=%.18f, zr=%.18f'%(xr,yr,zr)
print 'lat=%.18f, lon=%.18f'%(lat,lon)
"""
return (lat, lon)
def test_xyp2xyz_xyz2xyp():
'''
xyp2xyz() -> xyz2xyp() : check consistency, repeat 1000 times
'''
from cart_cs import xyp2xyz, xyz2xyp
N = 1000
R = 1
a = R/sqrt(3)
for i in xrange(N):
panel = randint(1,7)
alpha, beta = (pi/2)*rand(2) - pi/4
x, y = a*tan(alpha), a*tan(beta)
(X, Y, Z) = xyp2xyz(x, y, panel)
xyp_dict = xyz2xyp(X,Y,Z)
aa_equal((x,y), xyp_dict[panel], 15)
def test_xyp2xyz():
'''
xyp2xyz(): center of panel, at panel border
'''
from cart_cs import xyp2xyz
R = 1
a = R/sqrt(3)
#------------------------------------------------
# center of panel
#------------------------------------------------
x, y, panel = 0, 0, 1
(X, Y, Z) = xyp2xyz(x, y, panel)
a_equal((X,Y,Z), (1,0,0))
x, y, panel = 0, 0, 2
(X, Y, Z) = xyp2xyz(x, y, panel)
a_equal((X,Y,Z), (0,1,0))
x, y, panel = 0, 0, 3
(X, Y, Z) = xyp2xyz(x, y, panel)
a_equal((X,Y,Z), (-1,0,0))
x, y, panel = 0, 0, 4
(X, Y, Z) = xyp2xyz(x, y, panel)
a_equal((X,Y,Z), (0,-1,0))
x, y, panel = 0, 0, 5
(X, Y, Z) = xyp2xyz(x, y, panel)
a_equal((X,Y,Z), (0,0,-1))
x, y, panel = 0, 0, 6
(X, Y, Z) = xyp2xyz(x, y, panel)
a_equal((X,Y,Z), (0,0,1))
#------------------------------------------------
# at the panel border
#------------------------------------------------
alpha = pi/4
x, y, panel = a*tan(alpha), 0, 1
(X, Y, Z) = xyp2xyz(x, y, panel)
a_equal((X,Y,Z), (R*cos(alpha), R*sin(alpha), 0))
x, y, panel = a*tan(alpha), 0, 2
(X, Y, Z) = xyp2xyz(x, y, panel)
a_equal((X,Y,Z), (-R*sin(alpha), R*cos(alpha), 0))
x, y, panel = 0, -a*tan(alpha), 2
(X, Y, Z) = xyp2xyz(x, y, panel)
aa_equal((X,Y,Z), (0, R*sin(alpha), -R*cos(alpha)), 15)
x, y, panel = a*tan(alpha), 0, 3
(X, Y, Z) = xyp2xyz(x, y, panel)
a_equal((X,Y,Z), (-R*cos(alpha), -R*sin(alpha), 0))
x, y, panel = a*tan(alpha), 0, 4
(X, Y, Z) = xyp2xyz(x, y, panel)
a_equal((X,Y,Z), (R*sin(alpha), -R*cos(alpha), 0))
x, y, panel = a*tan(alpha), 0, 5
(X, Y, Z) = xyp2xyz(x, y, panel)
a_equal((X,Y,Z), (0, R*sin(alpha), -R*cos(alpha)))
x, y, panel = a*tan(alpha), 0, 6
(X, Y, Z) = xyp2xyz(x, y, panel)
a_equal((X,Y,Z), (0, R*sin(alpha), R*cos(alpha)))