def test_fix2euler():
"""Test convertion from fix angles to Euler angles"""
fix_angle = SimpleNamespace()
fix_angle.x = 0
fix_angle.y = 0
fix_angle.z = 0
euler_angle = euler2fix(fix_angle)
assert euler_angle.x == 0.0
assert euler_angle.y == 0.0
assert euler_angle.z == 0.0
fix_angle.x = 90
fix_angle.y = 90
fix_angle.z = 90
euler_angle = euler2fix(fix_angle)
assert euler_angle.x == 90.0
assert euler_angle.y == -90.0
assert euler_angle.z == 90.0
# Test by doing both transformation
fix_angle.x = 30.23
fix_angle.y = -85.52
fix_angle.z = -10.98
euler_angle = fix2euler(fix_angle)
fix_angle2 = euler2fix(euler_angle)
assert fix_angle == fix_angle2
def test_euler2fix():
"""Test convertion from Euler angles to fix angles """
euler_angle = SimpleNamespace()
euler_angle.x = 0
euler_angle.y = 0
euler_angle.z = 0
fix_angle = euler2fix(euler_angle)
assert fix_angle.x == 0.0
assert fix_angle.y == 0.0
assert fix_angle.z == 0.0
euler_angle.x = 50
euler_angle.y = 32
euler_angle.z = 65
fix_angle = euler2fix(euler_angle)
assert fix_angle.x == approx(49.24)
assert fix_angle.y == approx(-33.39)
assert fix_angle.z == approx(64.58)
euler_angle.x = -12.5
euler_angle.y = 27
euler_angle.z = 93
fix_angle = euler2fix(euler_angle)
assert fix_angle.x == approx(27.56)
assert fix_angle.y == approx(11.12)
assert fix_angle.z == approx(92.72)
euler_angle.x = 90
euler_angle.y = 90
euler_angle.z = 90
fix_angle = euler2fix(euler_angle)
assert fix_angle.x == 90.0
assert fix_angle.y == -90.0
assert fix_angle.z == 90.0
def convert_cpacs_to_sumo(cpacs_path, cpacs_out_path):
""" Function to convert a CPACS file geometry into a SUMO file geometry.
Function 'convert_cpacs_to_sumo' open an input cpacs file with TIXI handle
and via two main loop, one for fuselage(s), one for wing(s) it convert
every element (as much as possible) in the SUMO (.smx) format, which is
also an xml file. Due to some differences between both format, some CPACS
definition could lead to issues. The output sumo file is saved in the
folder /ToolOutput
Source:
* CPACS documentation: https://www.cpacs.de/pages/documentation.html
Args:
cpacs_path (str): Path to the CPACS file
Returns:
sumo_output_path (str): Path to the SUMO file
"""
EMPTY_SMX = MODULE_DIR + '/files/sumo_empty.smx'
tixi = cpsf.open_tixi(cpacs_path)
sumo = cpsf.open_tixi(EMPTY_SMX)
# Fuslage(s) -----
FUSELAGES_XPATH = '/cpacs/vehicles/aircraft/model/fuselages'
if tixi.checkElement(FUSELAGES_XPATH):
fus_cnt = tixi.getNamedChildrenCount(FUSELAGES_XPATH, 'fuselage')
log.info(str(fus_cnt) + ' fuselage has been found.')
else:
fus_cnt = 0
log.warning('No fuselage has been found in this CPACS file!')
for i_fus in range(fus_cnt):
fus_xpath = FUSELAGES_XPATH + '/fuselage[' + str(i_fus + 1) + ']'
fus_uid = tixi.getTextAttribute(fus_xpath, 'uID')
fus_transf = Transformation()
fus_transf.get_cpacs_transf(tixi, fus_xpath + '/transformation')
# Create new body (SUMO)
sumo.createElementAtIndex('/Assembly', 'BodySkeleton', i_fus + 1)
body_xpath = '/Assembly/BodySkeleton[' + str(i_fus + 1) + ']'
sumo.addTextAttribute(body_xpath, 'akimatg', 'false')
sumo.addTextAttribute(body_xpath, 'name', fus_uid)
body_tansf = Transformation()
body_tansf.translation = fus_transf.translation
# Convert angles
body_tansf.rotation = euler2fix(fus_transf.rotation)
# Add body rotation
body_rot_str = str(math.radians(body_tansf.rotation.x)) + ' ' \
+ str(math.radians(body_tansf.rotation.y)) + ' ' \
+ str(math.radians(body_tansf.rotation.z))
sumo.addTextAttribute(body_xpath, 'rotation', body_rot_str)
# Add body origin
body_ori_str = str(body_tansf.translation.x) + ' ' \
+ str(body_tansf.translation.y) + ' ' \
+ str(body_tansf.translation.z)
sumo.addTextAttribute(body_xpath, 'origin', body_ori_str)
# Positionings
if tixi.checkElement(fus_xpath + '/positionings'):
pos_cnt = tixi.getNamedChildrenCount(fus_xpath + '/positionings',
'positioning')
log.info(str(fus_cnt) + ' "Positionning" has been found : ')
pos_x_list = []
pos_y_list = []
pos_z_list = []
from_sec_list = []
to_sec_list = []
for i_pos in range(pos_cnt):
pos_xpath = fus_xpath + '/positionings/positioning[' \
+ str(i_pos+1) + ']'
length = tixi.getDoubleElement(pos_xpath + '/length')
sweep_deg = tixi.getDoubleElement(pos_xpath + '/sweepAngle')
sweep = math.radians(sweep_deg)
dihedral_deg = tixi.getDoubleElement(pos_xpath +
'/dihedralAngle')
dihedral = math.radians(dihedral_deg)
# Get the corresponding translation of each positionning
pos_x_list.append(length * math.sin(sweep))
pos_y_list.append(length * math.cos(dihedral) *
math.cos(sweep))
pos_z_list.append(length * math.sin(dihedral) *
math.cos(sweep))
# Get which section are connected by the positionning
if tixi.checkElement(pos_xpath + '/fromSectionUID'):
from_sec = tixi.getTextElement(pos_xpath +
'/fromSectionUID')
else:
from_sec = ''
from_sec_list.append(from_sec)
if tixi.checkElement(pos_xpath + '/toSectionUID'):
to_sec = tixi.getTextElement(pos_xpath + '/toSectionUID')
else:
to_sec = ''
to_sec_list.append(to_sec)
# Re-loop though the positionning to re-order them
for j_pos in range(pos_cnt):
if from_sec_list[j_pos] == '':
prev_pos_x = 0
prev_pos_y = 0
prev_pos_z = 0
elif from_sec_list[j_pos] == to_sec_list[j_pos - 1]:
prev_pos_x = pos_x_list[j_pos - 1]
prev_pos_y = pos_y_list[j_pos - 1]
prev_pos_z = pos_z_list[j_pos - 1]
else:
index_prev = to_sec_list.index(from_sec_list[j_pos])
prev_pos_x = pos_x_list[index_prev]
prev_pos_y = pos_y_list[index_prev]
prev_pos_z = pos_z_list[index_prev]
pos_x_list[j_pos] += prev_pos_x
pos_y_list[j_pos] += prev_pos_y
pos_z_list[j_pos] += prev_pos_z
else:
log.warning('No "positionings" have been found!')
pos_cnt = 0
#Sections
sec_cnt = tixi.getNamedChildrenCount(fus_xpath + '/sections',
'section')
log.info(" -" + str(sec_cnt) + ' fuselage sections have been found')
if pos_cnt == 0:
pos_x_list = [0.0] * sec_cnt
pos_y_list = [0.0] * sec_cnt
pos_z_list = [0.0] * sec_cnt
for i_sec in range(sec_cnt):
sec_xpath = fus_xpath + '/sections/section[' + str(i_sec + 1) + ']'
sec_uid = tixi.getTextAttribute(sec_xpath, 'uID')
sec_transf = Transformation()
sec_transf.get_cpacs_transf(tixi, sec_xpath + '/transformation')
if (sec_transf.rotation.x or sec_transf.rotation.y
or sec_transf.rotation.z):
log.warning('Sections "' + sec_uid + '" is rotated, it is \
not possible to take that into acount in SUMO !')
# Elements
elem_cnt = tixi.getNamedChildrenCount(sec_xpath + '/elements',
'element')
if elem_cnt > 1:
log.warning("Sections " + sec_uid + " contains multiple \
element, it could be an issue for the conversion \
to SUMO!")
for i_elem in range(elem_cnt):
elem_xpath = sec_xpath + '/elements/element[' \
+ str(i_elem + 1) + ']'
elem_uid = tixi.getTextAttribute(elem_xpath, 'uID')
elem_transf = Transformation()
elem_transf.get_cpacs_transf(tixi,
elem_xpath + '/transformation')
if (elem_transf.rotation.x or elem_transf.rotation.y
or elem_transf.rotation.z):
log.warning('Element "' + elem_uid + '" is rotated, it \
is not possible to take that into acount in \
SUMO !')
# Fuselage profiles
prof_uid = tixi.getTextElement(elem_xpath + '/profileUID')
prof_xpath = tixi.uIDGetXPath(prof_uid)
prof_vect_x_str = tixi.getTextElement(prof_xpath +
'/pointList/x')
prof_vect_y_str = tixi.getTextElement(prof_xpath +
'/pointList/y')
prof_vect_z_str = tixi.getTextElement(prof_xpath +
'/pointList/z')
# Transform sting into list of float
prof_vect_x = []
for i, item in enumerate(prof_vect_x_str.split(';')):
if item:
prof_vect_x.append(float(item))
prof_vect_y = []
for i, item in enumerate(prof_vect_y_str.split(';')):
if item:
prof_vect_y.append(float(item))
prof_vect_z = []
for i, item in enumerate(prof_vect_z_str.split(';')):
if item:
prof_vect_z.append(float(item))
prof_size_y = (max(prof_vect_y) - min(prof_vect_y)) / 2
prof_size_z = (max(prof_vect_z) - min(prof_vect_z)) / 2
prof_vect_y[:] = [y / prof_size_y for y in prof_vect_y]
prof_vect_z[:] = [z / prof_size_z for z in prof_vect_z]
prof_min_y = min(prof_vect_y)
prof_max_y = max(prof_vect_y)
prof_min_z = min(prof_vect_z)
prof_max_z = max(prof_vect_z)
prof_vect_y[:] = [y - 1 - prof_min_y for y in prof_vect_y]
prof_vect_z[:] = [z - 1 - prof_min_z for z in prof_vect_z]
# Could be a problem if they are less positionings than secions
# TODO: solve that!
pos_y_list[i_sec] += (
(1 + prof_min_y) * prof_size_y) * elem_transf.scale.y
pos_z_list[i_sec] += (
(1 + prof_min_z) * prof_size_z) * elem_transf.scale.z
# #To Plot a particular section
# if i_sec==5:
# plt.plot(prof_vect_z, prof_vect_y,'x')
# plt.xlabel('y')
# plt.ylabel('z')
# plt.grid(True)
# plt.show
# Put value in SUMO format
body_frm_center_x = ( elem_transf.translation.x \
+ sec_transf.translation.x \
+ pos_x_list[i_sec]) \
* fus_transf.scale.x
body_frm_center_y = ( elem_transf.translation.y \
* sec_transf.scale.y \
+ sec_transf.translation.y \
+ pos_y_list[i_sec]) \
* fus_transf.scale.y
body_frm_center_z = ( elem_transf.translation.z \
* sec_transf.scale.z \
+ sec_transf.translation.z \
+ pos_z_list[i_sec]) \
* fus_transf.scale.z
body_frm_height = prof_size_z * 2 * elem_transf.scale.z \
* sec_transf.scale.z * fus_transf.scale.z
if body_frm_height < 0.01:
body_frm_height = 0.01
body_frm_width = prof_size_y * 2 * elem_transf.scale.y \
* sec_transf.scale.y * fus_transf.scale.y
if body_frm_width < 0.01:
body_frm_width = 0.01
# Convert the profile points in the SMX format
prof_str = ''
teta_list = []
teta_half = []
prof_vect_y_half = []
prof_vect_z_half = []
check_max = 0
check_min = 0
# Use polar angle to keep point in the correct order
for i, item in enumerate(prof_vect_y):
teta_list.append(math.atan2(prof_vect_z[i],
prof_vect_y[i]))
for t, teta in enumerate(teta_list):
HALF_PI = math.pi / 2
EPSILON = 0.04
if abs(teta) <= HALF_PI - EPSILON:
teta_half.append(teta)
prof_vect_y_half.append(prof_vect_y[t])
prof_vect_z_half.append(prof_vect_z[t])
elif abs(teta) < HALF_PI + EPSILON:
# Check if not the last element of the list
if not t == len(teta_list) - 1:
next_val = prof_vect_z[t + 1]
# Check if it is better to keep next point
if not abs(next_val) > abs(prof_vect_z[t]):
if prof_vect_z[t] > 0 and not check_max:
teta_half.append(teta)
# Force y=0, to get symmetrical profile
prof_vect_y_half.append(0)
prof_vect_z_half.append(prof_vect_z[t])
check_max = 1
elif prof_vect_z[t] < 0 and not check_min:
teta_half.append(teta)
# Force y=0, to get symmetrical profile
prof_vect_y_half.append(0)
prof_vect_z_half.append(prof_vect_z[t])
check_min = 1
# Sort points by teta value, to fit the SUMO profile format
teta_half, prof_vect_z_half, prof_vect_y_half = \
(list(t) for t in zip(*sorted(zip(teta_half,
prof_vect_z_half,
prof_vect_y_half))))
# Write profile as a string and add y=0 point at the begining
# and at the end to ensure symmmetry
if not check_min:
prof_str += str(0) + ' ' + str(prof_vect_z_half[0]) + ' '
for i, item in enumerate(prof_vect_z_half):
prof_str += str(round(prof_vect_y_half[i], 4)) + ' ' \
+ str(round(prof_vect_z_half[i], 4)) + ' '
if not check_max:
prof_str += str(0) + ' ' + str(prof_vect_z_half[i]) + ' '
# Write the SUMO file
sumo.addTextElementAtIndex(body_xpath, 'BodyFrame', prof_str,
i_sec + 1)
frame_xpath = body_xpath + '/BodyFrame[' + str(i_sec + 1) + ']'
body_center_str = str(body_frm_center_x) + ' ' + \
str(body_frm_center_y) + ' ' + \
str(body_frm_center_z)
sumo.addTextAttribute(frame_xpath, 'center', body_center_str)
sumo.addTextAttribute(frame_xpath, 'height',
str(body_frm_height))
sumo.addTextAttribute(frame_xpath, 'width',
str(body_frm_width))
sumo.addTextAttribute(frame_xpath, 'name', sec_uid)
# To remove the default BodySkeleton
if fus_cnt == 0:
sumo.removeElement('/Assembly/BodySkeleton')
else:
sumo.removeElement('/Assembly/BodySkeleton[' + str(fus_cnt + 1) + ']')
# Wing(s) -----
WINGS_XPATH = '/cpacs/vehicles/aircraft/model/wings'
if tixi.checkElement(WINGS_XPATH):
wing_cnt = tixi.getNamedChildrenCount(WINGS_XPATH, 'wing')
log.info(str(wing_cnt) + ' wings has been found.')
else:
wing_cnt = 0
log.warning('No wings has been found in this CPACS file!')
for i_wing in range(wing_cnt):
wing_xpath = WINGS_XPATH + '/wing[' + str(i_wing + 1) + ']'
wing_uid = tixi.getTextAttribute(wing_xpath, 'uID')
wing_transf = Transformation()
wing_transf.get_cpacs_transf(tixi, wing_xpath + '/transformation')
# Create new wing (SUMO)
sumo.createElementAtIndex('/Assembly', 'WingSkeleton', i_wing + 1)
wg_sk_xpath = '/Assembly/WingSkeleton[' + str(i_wing + 1) + ']'
sumo.addTextAttribute(wg_sk_xpath, 'akimatg', 'false')
sumo.addTextAttribute(wg_sk_xpath, 'name', wing_uid)
# Create a class for the transformation of the WingSkeleton
wg_sk_tansf = Transformation()
# Convert WingSkeleton rotation and add it to SUMO
wg_sk_tansf.rotation = euler2fix(wing_transf.rotation)
wg_sk_rot_str = str(math.radians(wg_sk_tansf.rotation.x)) + ' ' \
+ str(math.radians(wg_sk_tansf.rotation.y)) + ' ' \
+ str(math.radians(wg_sk_tansf.rotation.z))
sumo.addTextAttribute(wg_sk_xpath, 'rotation', wg_sk_rot_str)
# Add WingSkeleton origin
wg_sk_tansf.translation = wing_transf.translation
wg_sk_ori_str = str(wg_sk_tansf.translation.x) + ' ' \
+ str(wg_sk_tansf.translation.y) + ' ' \
+ str(wg_sk_tansf.translation.z)
sumo.addTextAttribute(wg_sk_xpath, 'origin', wg_sk_ori_str)
if tixi.checkAttribute(wing_xpath, 'symmetry'):
if tixi.getTextAttribute(wing_xpath, 'symmetry') == 'x-z-plane':
sumo.addTextAttribute(wg_sk_xpath, 'flags',
'autosym,detectwinglet')
else:
sumo.addTextAttribute(wg_sk_xpath, 'flags', 'detectwinglet')
# Positionings
if tixi.checkElement(wing_xpath + '/positionings'):
pos_cnt = tixi.getNamedChildrenCount(wing_xpath + '/positionings',
'positioning')
log.info(str(wing_cnt) + ' "positionning" has been found : ')
pos_x_list = []
pos_y_list = []
pos_z_list = []
from_sec_list = []
to_sec_list = []
for i_pos in range(pos_cnt):
pos_xpath = wing_xpath + '/positionings/positioning[' \
+ str(i_pos+1) + ']'
length = tixi.getDoubleElement(pos_xpath + '/length')
sweep_deg = tixi.getDoubleElement(pos_xpath + '/sweepAngle')
sweep = math.radians(sweep_deg)
dihedral_deg = tixi.getDoubleElement(pos_xpath +
'/dihedralAngle')
dihedral = math.radians(dihedral_deg)
# Get the corresponding translation of each positionning
pos_x_list.append(length * math.sin(sweep))
pos_y_list.append(length * math.cos(dihedral) *
math.cos(sweep))
pos_z_list.append(length * math.sin(dihedral) *
math.cos(sweep))
# Get which section are connected by the positionning
if tixi.checkElement(pos_xpath + '/fromSectionUID'):
from_sec = tixi.getTextElement(pos_xpath +
'/fromSectionUID')
else:
from_sec = ''
from_sec_list.append(from_sec)
if tixi.checkElement(pos_xpath + '/toSectionUID'):
to_sec = tixi.getTextElement(pos_xpath + '/toSectionUID')
else:
to_sec = ''
to_sec_list.append(to_sec)
# Re-loop though the positionning to re-order them
for j_pos in range(pos_cnt):
if from_sec_list[j_pos] == '':
prev_pos_x = 0
prev_pos_y = 0
prev_pos_z = 0
elif from_sec_list[j_pos] == to_sec_list[j_pos - 1]:
prev_pos_x = pos_x_list[j_pos - 1]
prev_pos_y = pos_y_list[j_pos - 1]
prev_pos_z = pos_z_list[j_pos - 1]
else:
index_prev = to_sec_list.index(from_sec_list[j_pos])
prev_pos_x = pos_x_list[index_prev]
prev_pos_y = pos_y_list[index_prev]
prev_pos_z = pos_z_list[index_prev]
pos_x_list[j_pos] += prev_pos_x
pos_y_list[j_pos] += prev_pos_y
pos_z_list[j_pos] += prev_pos_z
else:
log.warning('No "positionings" have been found!')
pos_cnt = 0
#Sections
sec_cnt = tixi.getNamedChildrenCount(wing_xpath + '/sections',
'section')
log.info(" -" + str(sec_cnt) + ' wing sections have been found')
wing_sec_index = 1
if pos_cnt == 0:
pos_x_list = [0.0] * sec_cnt
pos_y_list = [0.0] * sec_cnt
pos_z_list = [0.0] * sec_cnt
for i_sec in reversed(range(sec_cnt)):
sec_xpath = wing_xpath + '/sections/section[' + str(i_sec +
1) + ']'
sec_uid = tixi.getTextAttribute(sec_xpath, 'uID')
sec_transf = Transformation()
sec_transf.get_cpacs_transf(tixi, sec_xpath + '/transformation')
# Elements
elem_cnt = tixi.getNamedChildrenCount(sec_xpath + '/elements',
'element')
if elem_cnt > 1:
log.warning("Sections " + sec_uid + " contains multiple \
element, it could be an issue for the conversion \
to SUMO!")
for i_elem in range(elem_cnt):
elem_xpath = sec_xpath + '/elements/element[' \
+ str(i_elem + 1) + ']'
elem_uid = tixi.getTextAttribute(elem_xpath, 'uID')
elem_transf = Transformation()
elem_transf.get_cpacs_transf(tixi,
elem_xpath + '/transformation')
# Wing profile (airfoil)
prof_uid = tixi.getTextElement(elem_xpath + '/airfoilUID')
prof_xpath = tixi.uIDGetXPath(prof_uid)
try:
tixi.checkElement(prof_xpath)
except:
log.error('No profile "' + prof_uid + '" has been found!')
prof_vect_x_str = tixi.getTextElement(prof_xpath +
'/pointList/x')
prof_vect_y_str = tixi.getTextElement(prof_xpath +
'/pointList/y')
prof_vect_z_str = tixi.getTextElement(prof_xpath +
'/pointList/z')
# Transform airfoil points (string) into list of float
prof_vect_x = []
for i, item in enumerate(prof_vect_x_str.split(';')):
if item:
prof_vect_x.append(float(item))
prof_vect_y = []
for i, item in enumerate(prof_vect_y_str.split(';')):
if item:
prof_vect_y.append(float(item))
prof_vect_z = []
for i, item in enumerate(prof_vect_z_str.split(';')):
if item:
prof_vect_z.append(float(item))
if sum(prof_vect_z[0:len(prof_vect_z)//2]) \
< sum(prof_vect_z[len(prof_vect_z)//2:-1]):
log.info("Airfoil's points will be reversed.")
tmp_vect_x = []
tmp_vect_y = []
tmp_vect_z = []
for i in range(len(prof_vect_x)):
tmp_vect_x.append(prof_vect_x[len(prof_vect_x) - 1 -
i])
tmp_vect_y.append(prof_vect_y[len(prof_vect_y) - 1 -
i])
tmp_vect_z.append(prof_vect_z[len(prof_vect_z) - 1 -
i])
prof_vect_x = tmp_vect_x
prof_vect_y = tmp_vect_y
prof_vect_z = tmp_vect_z
# Apply scaling
for i, item in enumerate(prof_vect_x):
prof_vect_x[i] = item * elem_transf.scale.x \
* sec_transf.scale.x * wing_transf.scale.x
for i, item in enumerate(prof_vect_y):
prof_vect_y[i] = item * elem_transf.scale.y \
* sec_transf.scale.y * wing_transf.scale.y
for i, item in enumerate(prof_vect_z):
prof_vect_z[i] = item * elem_transf.scale.z \
* sec_transf.scale.z * wing_transf.scale.z
# if (i_sec>8 and i_sec<=10):
# plt.plot(prof_vect_x, prof_vect_z,'x')
# plt.xlabel('x')
# plt.ylabel('z')
# plt.grid(True)
# plt.show()
prof_size_x = (max(prof_vect_x) - min(prof_vect_x))
prof_size_y = (max(prof_vect_y) - min(prof_vect_y))
prof_size_z = (max(prof_vect_z) - min(prof_vect_z))
if prof_size_y == 0:
prof_vect_x[:] = [x / prof_size_x for x in prof_vect_x]
prof_vect_z[:] = [z / prof_size_x for z in prof_vect_z]
# Is it correct to divide by prof_size_x ????
wg_sec_chord = prof_size_x
else:
log.error("An airfoil profile is not define correctly")
# SUMO variable for WingSection
wg_sec_center_x = ( elem_transf.translation.x \
+ sec_transf.translation.x \
+ pos_x_list[i_sec]) \
* wing_transf.scale.x
wg_sec_center_y = ( elem_transf.translation.y \
* sec_transf.scale.y \
+ sec_transf.translation.y \
+ pos_y_list[i_sec]) \
* wing_transf.scale.y
wg_sec_center_z = ( elem_transf.translation.z \
* sec_transf.scale.z \
+ sec_transf.translation.z \
+ pos_z_list[i_sec]) \
* wing_transf.scale.z
# Add roation from element and sections
# Adding the two angles: Maybe not work in every case!!!
add_rotation = SimpleNamespace()
add_rotation.x = elem_transf.rotation.x + sec_transf.rotation.x
add_rotation.y = elem_transf.rotation.y + sec_transf.rotation.y
add_rotation.z = elem_transf.rotation.z + sec_transf.rotation.z
# Get Section rotation for SUMO
wg_sec_rot = euler2fix(add_rotation)
wg_sec_dihed = math.radians(wg_sec_rot.x)
wg_sec_twist = math.radians(wg_sec_rot.y)
wg_sec_yaw = math.radians(wg_sec_rot.z)
# Convert point list into string
prof_str = ''
# Airfoil points order : shoud be from TE (1 0) to LE (0 0)
# then TE(1 0), but not reverse way.
# to avoid double zero, not accepted by SUMO
for i, item in (enumerate(prof_vect_x)):
# if not (prof_vect_x[i] == prof_vect_x[i-1] or \
# round(prof_vect_z[i],4) == round(prof_vect_z[i-1],4)):
if round(prof_vect_z[i], 4) != round(
prof_vect_z[i - 1], 4):
prof_str += str(round(prof_vect_x[i], 4)) + ' ' \
+ str(round(prof_vect_z[i], 4)) + ' '
sumo.addTextElementAtIndex(wg_sk_xpath, 'WingSection',
prof_str, wing_sec_index)
wg_sec_xpath = wg_sk_xpath + '/WingSection[' \
+ str(wing_sec_index) + ']'
sumo.addTextAttribute(wg_sec_xpath, 'airfoil', prof_uid)
sumo.addTextAttribute(wg_sec_xpath, 'name', sec_uid)
wg_sec_center_str = str(wg_sec_center_x) + ' ' + \
str(wg_sec_center_y) + ' ' + \
str(wg_sec_center_z)
sumo.addTextAttribute(wg_sec_xpath, 'center',
wg_sec_center_str)
sumo.addTextAttribute(wg_sec_xpath, 'chord', str(wg_sec_chord))
sumo.addTextAttribute(wg_sec_xpath, 'dihedral',
str(wg_sec_dihed))
sumo.addTextAttribute(wg_sec_xpath, 'twist', str(wg_sec_twist))
sumo.addTextAttribute(wg_sec_xpath, 'yaw', str(wg_sec_yaw))
sumo.addTextAttribute(wg_sec_xpath, 'napprox', '-1')
sumo.addTextAttribute(wg_sec_xpath, 'reversed', 'false')
sumo.addTextAttribute(wg_sec_xpath, 'vbreak', 'false')
wing_sec_index += 1
# Add Wing caps
sumo.createElementAtIndex(wg_sk_xpath, "Cap", 1)
sumo.addTextAttribute(wg_sk_xpath + '/Cap[1]', 'height', '0')
sumo.addTextAttribute(wg_sk_xpath + '/Cap[1]', 'shape', 'LongCap')
sumo.addTextAttribute(wg_sk_xpath + '/Cap[1]', 'side', 'south')
sumo.createElementAtIndex(wg_sk_xpath, 'Cap', 2)
sumo.addTextAttribute(wg_sk_xpath + '/Cap[2]', 'height', '0')
sumo.addTextAttribute(wg_sk_xpath + '/Cap[2]', 'shape', 'LongCap')
sumo.addTextAttribute(wg_sk_xpath + '/Cap[2]', 'side', 'north')
# Save the SMX file
wkdir = ceaf.get_wkdir_or_create_new(tixi)
sumo_file_xpath = '/cpacs/toolspecific/CEASIOMpy/filesPath/sumoFilePath'
sumo_dir = os.path.join(wkdir, 'SUMO')
sumo_file_path = os.path.join(sumo_dir, 'ToolOutput.smx')
if not os.path.isdir(sumo_dir):
os.mkdir(sumo_dir)
cpsf.create_branch(tixi, sumo_file_xpath)
tixi.updateTextElement(sumo_file_xpath, sumo_file_path)
cpsf.close_tixi(tixi, cpacs_out_path)
cpsf.close_tixi(sumo, sumo_file_path)
def convert_cpacs_to_sumo(cpacs_path, cpacs_out_path):
"""Function to convert a CPACS file geometry into a SUMO file geometry.
Function 'convert_cpacs_to_sumo' open an input cpacs file with TIXI handle
and via two main loop, one for fuselage(s), one for wing(s) it convert
every element (as much as possible) in the SUMO (.smx) format, which is
also an xml file. Due to some differences between both format, some CPACS
definition could lead to issues. The output sumo file is saved in the
folder /ToolOutput
Source:
* CPACS documentation: https://www.cpacs.de/pages/documentation.html
Args:
cpacs_path (str): Path to the CPACS file
Returns:
sumo_output_path (str): Path to the SUMO file
"""
EMPTY_SMX = MODULE_DIR + "/files/sumo_empty.smx"
tixi = open_tixi(cpacs_path)
sumo = open_tixi(EMPTY_SMX)
# Fuslage(s) ---------------------------------------------------------------
if tixi.checkElement(FUSELAGES_XPATH):
fus_cnt = tixi.getNamedChildrenCount(FUSELAGES_XPATH, "fuselage")
log.info(str(fus_cnt) + " fuselage has been found.")
else:
fus_cnt = 0
log.warning("No fuselage has been found in this CPACS file!")
for i_fus in range(fus_cnt):
fus_xpath = FUSELAGES_XPATH + "/fuselage[" + str(i_fus + 1) + "]"
fus_uid = tixi.getTextAttribute(fus_xpath, "uID")
fus_transf = Transformation()
fus_transf.get_cpacs_transf(tixi, fus_xpath)
# Create new body (SUMO)
sumo.createElementAtIndex("/Assembly", "BodySkeleton", i_fus + 1)
body_xpath = "/Assembly/BodySkeleton[" + str(i_fus + 1) + "]"
sumo.addTextAttribute(body_xpath, "akimatg", "false")
sumo.addTextAttribute(body_xpath, "name", fus_uid)
body_tansf = Transformation()
body_tansf.translation = fus_transf.translation
# Convert angles
body_tansf.rotation = euler2fix(fus_transf.rotation)
# Add body rotation
body_rot_str = (str(math.radians(body_tansf.rotation.x)) + " " +
str(math.radians(body_tansf.rotation.y)) + " " +
str(math.radians(body_tansf.rotation.z)))
sumo.addTextAttribute(body_xpath, "rotation", body_rot_str)
# Add body origin
body_ori_str = (str(body_tansf.translation.x) + " " +
str(body_tansf.translation.y) + " " +
str(body_tansf.translation.z))
sumo.addTextAttribute(body_xpath, "origin", body_ori_str)
# Positionings
if tixi.checkElement(fus_xpath + "/positionings"):
pos_cnt = tixi.getNamedChildrenCount(fus_xpath + "/positionings",
"positioning")
log.info(str(fus_cnt) + ' "Positionning" has been found : ')
pos_x_list = []
pos_y_list = []
pos_z_list = []
from_sec_list = []
to_sec_list = []
for i_pos in range(pos_cnt):
pos_xpath = fus_xpath + "/positionings/positioning[" + str(
i_pos + 1) + "]"
length = tixi.getDoubleElement(pos_xpath + "/length")
sweep_deg = tixi.getDoubleElement(pos_xpath + "/sweepAngle")
sweep = math.radians(sweep_deg)
dihedral_deg = tixi.getDoubleElement(pos_xpath +
"/dihedralAngle")
dihedral = math.radians(dihedral_deg)
# Get the corresponding translation of each positionning
pos_x_list.append(length * math.sin(sweep))
pos_y_list.append(length * math.cos(dihedral) *
math.cos(sweep))
pos_z_list.append(length * math.sin(dihedral) *
math.cos(sweep))
# Get which section are connected by the positionning
if tixi.checkElement(pos_xpath + "/fromSectionUID"):
from_sec = tixi.getTextElement(pos_xpath +
"/fromSectionUID")
else:
from_sec = ""
from_sec_list.append(from_sec)
if tixi.checkElement(pos_xpath + "/toSectionUID"):
to_sec = tixi.getTextElement(pos_xpath + "/toSectionUID")
else:
to_sec = ""
to_sec_list.append(to_sec)
# Re-loop though the positionning to re-order them
for j_pos in range(pos_cnt):
if from_sec_list[j_pos] == "":
prev_pos_x = 0
prev_pos_y = 0
prev_pos_z = 0
elif from_sec_list[j_pos] == to_sec_list[j_pos - 1]:
prev_pos_x = pos_x_list[j_pos - 1]
prev_pos_y = pos_y_list[j_pos - 1]
prev_pos_z = pos_z_list[j_pos - 1]
else:
index_prev = to_sec_list.index(from_sec_list[j_pos])
prev_pos_x = pos_x_list[index_prev]
prev_pos_y = pos_y_list[index_prev]
prev_pos_z = pos_z_list[index_prev]
pos_x_list[j_pos] += prev_pos_x
pos_y_list[j_pos] += prev_pos_y
pos_z_list[j_pos] += prev_pos_z
else:
log.warning('No "positionings" have been found!')
pos_cnt = 0
# Sections
sec_cnt = tixi.getNamedChildrenCount(fus_xpath + "/sections",
"section")
log.info(" -" + str(sec_cnt) + " fuselage sections have been found")
if pos_cnt == 0:
pos_x_list = [0.0] * sec_cnt
pos_y_list = [0.0] * sec_cnt
pos_z_list = [0.0] * sec_cnt
for i_sec in range(sec_cnt):
sec_xpath = fus_xpath + "/sections/section[" + str(i_sec + 1) + "]"
sec_uid = tixi.getTextAttribute(sec_xpath, "uID")
sec_transf = Transformation()
sec_transf.get_cpacs_transf(tixi, sec_xpath)
if sec_transf.rotation.x or sec_transf.rotation.y or sec_transf.rotation.z:
log.warning('Sections "' + sec_uid + '" is rotated, it is \
not possible to take that into acount in SUMO !')
# Elements
elem_cnt = tixi.getNamedChildrenCount(sec_xpath + "/elements",
"element")
if elem_cnt > 1:
log.warning("Sections " + sec_uid + " contains multiple \
element, it could be an issue for the conversion \
to SUMO!")
for i_elem in range(elem_cnt):
elem_xpath = sec_xpath + "/elements/element[" + str(i_elem +
1) + "]"
elem_uid = tixi.getTextAttribute(elem_xpath, "uID")
elem_transf = Transformation()
elem_transf.get_cpacs_transf(tixi, elem_xpath)
if elem_transf.rotation.x or elem_transf.rotation.y or elem_transf.rotation.z:
log.warning('Element "' + elem_uid + '" is rotated, it \
is not possible to take that into acount in \
SUMO !')
# Fuselage profiles
prof_uid = tixi.getTextElement(elem_xpath + "/profileUID")
prof_vect_x, prof_vect_y, prof_vect_z = get_profile_coord(
tixi, prof_uid)
prof_size_y = (max(prof_vect_y) - min(prof_vect_y)) / 2
prof_size_z = (max(prof_vect_z) - min(prof_vect_z)) / 2
prof_vect_y[:] = [y / prof_size_y for y in prof_vect_y]
prof_vect_z[:] = [z / prof_size_z for z in prof_vect_z]
prof_min_y = min(prof_vect_y)
prof_min_z = min(prof_vect_z)
prof_vect_y[:] = [y - 1 - prof_min_y for y in prof_vect_y]
prof_vect_z[:] = [z - 1 - prof_min_z for z in prof_vect_z]
# Could be a problem if they are less positionings than secions
# TODO: solve that!
pos_y_list[i_sec] += (
(1 + prof_min_y) * prof_size_y) * elem_transf.scaling.y
pos_z_list[i_sec] += (
(1 + prof_min_z) * prof_size_z) * elem_transf.scaling.z
# #To Plot a particular section
# if i_sec==5:
# plt.plot(prof_vect_z, prof_vect_y,'x')
# plt.xlabel('y')
# plt.ylabel('z')
# plt.grid(True)
# plt.show
# Put value in SUMO format
body_frm_center_x = (elem_transf.translation.x +
sec_transf.translation.x +
pos_x_list[i_sec]) * fus_transf.scaling.x
body_frm_center_y = (
elem_transf.translation.y * sec_transf.scaling.y +
sec_transf.translation.y +
pos_y_list[i_sec]) * fus_transf.scaling.y
body_frm_center_z = (
elem_transf.translation.z * sec_transf.scaling.z +
sec_transf.translation.z +
pos_z_list[i_sec]) * fus_transf.scaling.z
body_frm_height = (prof_size_z * 2 * elem_transf.scaling.z *
sec_transf.scaling.z * fus_transf.scaling.z)
if body_frm_height < 0.01:
body_frm_height = 0.01
body_frm_width = (prof_size_y * 2 * elem_transf.scaling.y *
sec_transf.scaling.y * fus_transf.scaling.y)
if body_frm_width < 0.01:
body_frm_width = 0.01
# Convert the profile points in the SMX format
prof_str = ""
teta_list = []
teta_half = []
prof_vect_y_half = []
prof_vect_z_half = []
check_max = 0
check_min = 0
# Use polar angle to keep point in the correct order
for i, item in enumerate(prof_vect_y):
teta_list.append(math.atan2(prof_vect_z[i],
prof_vect_y[i]))
for t, teta in enumerate(teta_list):
HALF_PI = math.pi / 2
EPSILON = 0.04
if abs(teta) <= HALF_PI - EPSILON:
teta_half.append(teta)
prof_vect_y_half.append(prof_vect_y[t])
prof_vect_z_half.append(prof_vect_z[t])
elif abs(teta) < HALF_PI + EPSILON:
# Check if not the last element of the list
if not t == len(teta_list) - 1:
next_val = prof_vect_z[t + 1]
# Check if it is better to keep next point
if not abs(next_val) > abs(prof_vect_z[t]):
if prof_vect_z[t] > 0 and not check_max:
teta_half.append(teta)
# Force y=0, to get symmetrical profile
prof_vect_y_half.append(0)
prof_vect_z_half.append(prof_vect_z[t])
check_max = 1
elif prof_vect_z[t] < 0 and not check_min:
teta_half.append(teta)
# Force y=0, to get symmetrical profile
prof_vect_y_half.append(0)
prof_vect_z_half.append(prof_vect_z[t])
check_min = 1
# Sort points by teta value, to fit the SUMO profile format
teta_half, prof_vect_z_half, prof_vect_y_half = (
list(t) for t in zip(*sorted(
zip(teta_half, prof_vect_z_half, prof_vect_y_half))))
# Write profile as a string and add y=0 point at the begining
# and at the end to ensure symmmetry
if not check_min:
prof_str += str(0) + " " + str(prof_vect_z_half[0]) + " "
for i, item in enumerate(prof_vect_z_half):
prof_str += (str(round(prof_vect_y_half[i], 4)) + " " +
str(round(prof_vect_z_half[i], 4)) + " ")
if not check_max:
prof_str += str(0) + " " + str(prof_vect_z_half[i]) + " "
# Write the SUMO file
sumo.addTextElementAtIndex(body_xpath, "BodyFrame", prof_str,
i_sec + 1)
frame_xpath = body_xpath + "/BodyFrame[" + str(i_sec + 1) + "]"
body_center_str = (str(body_frm_center_x) + " " +
str(body_frm_center_y) + " " +
str(body_frm_center_z))
sumo.addTextAttribute(frame_xpath, "center", body_center_str)
sumo.addTextAttribute(frame_xpath, "height",
str(body_frm_height))
sumo.addTextAttribute(frame_xpath, "width",
str(body_frm_width))
sumo.addTextAttribute(frame_xpath, "name", sec_uid)
# Fuselage symmetry (mirror copy)
if tixi.checkAttribute(fus_xpath, "symmetry"):
if tixi.getTextAttribute(fus_xpath, "symmetry") == "x-z-plane":
sumo_mirror_copy(sumo, body_xpath, fus_uid, False)
# To remove the default BodySkeleton
if fus_cnt == 0:
sumo.removeElement("/Assembly/BodySkeleton")
else:
sumo.removeElement("/Assembly/BodySkeleton[" + str(fus_cnt + 1) + "]")
# Wing(s) ------------------------------------------------------------------
if tixi.checkElement(WINGS_XPATH):
wing_cnt = tixi.getNamedChildrenCount(WINGS_XPATH, "wing")
log.info(str(wing_cnt) + " wings has been found.")
else:
wing_cnt = 0
log.warning("No wings has been found in this CPACS file!")
for i_wing in range(wing_cnt):
wing_xpath = WINGS_XPATH + "/wing[" + str(i_wing + 1) + "]"
wing_uid = tixi.getTextAttribute(wing_xpath, "uID")
wing_transf = Transformation()
wing_transf.get_cpacs_transf(tixi, wing_xpath)
# Create new wing (SUMO)
sumo.createElementAtIndex("/Assembly", "WingSkeleton", i_wing + 1)
wg_sk_xpath = "/Assembly/WingSkeleton[" + str(i_wing + 1) + "]"
sumo.addTextAttribute(wg_sk_xpath, "akimatg", "false")
sumo.addTextAttribute(wg_sk_xpath, "name", wing_uid)
# Create a class for the transformation of the WingSkeleton
wg_sk_tansf = Transformation()
# Convert WingSkeleton rotation and add it to SUMO
wg_sk_tansf.rotation = euler2fix(wing_transf.rotation)
wg_sk_rot_str = (str(math.radians(wg_sk_tansf.rotation.x)) + " " +
str(math.radians(wg_sk_tansf.rotation.y)) + " " +
str(math.radians(wg_sk_tansf.rotation.z)))
sumo.addTextAttribute(wg_sk_xpath, "rotation", wg_sk_rot_str)
# Add WingSkeleton origin
wg_sk_tansf.translation = wing_transf.translation
wg_sk_ori_str = (str(wg_sk_tansf.translation.x) + " " +
str(wg_sk_tansf.translation.y) + " " +
str(wg_sk_tansf.translation.z))
sumo.addTextAttribute(wg_sk_xpath, "origin", wg_sk_ori_str)
if tixi.checkAttribute(wing_xpath, "symmetry"):
if tixi.getTextAttribute(wing_xpath, "symmetry") == "x-z-plane":
sumo.addTextAttribute(wg_sk_xpath, "flags",
"autosym,detectwinglet")
else:
sumo.addTextAttribute(wg_sk_xpath, "flags", "detectwinglet")
# Positionings
if tixi.checkElement(wing_xpath + "/positionings"):
pos_cnt = tixi.getNamedChildrenCount(wing_xpath + "/positionings",
"positioning")
log.info(str(wing_cnt) + ' "positionning" has been found : ')
pos_x_list = []
pos_y_list = []
pos_z_list = []
from_sec_list = []
to_sec_list = []
for i_pos in range(pos_cnt):
pos_xpath = wing_xpath + "/positionings/positioning[" + str(
i_pos + 1) + "]"
length = tixi.getDoubleElement(pos_xpath + "/length")
sweep_deg = tixi.getDoubleElement(pos_xpath + "/sweepAngle")
sweep = math.radians(sweep_deg)
dihedral_deg = tixi.getDoubleElement(pos_xpath +
"/dihedralAngle")
dihedral = math.radians(dihedral_deg)
# Get the corresponding translation of each positionning
pos_x_list.append(length * math.sin(sweep))
pos_y_list.append(length * math.cos(dihedral) *
math.cos(sweep))
pos_z_list.append(length * math.sin(dihedral) *
math.cos(sweep))
# Get which section are connected by the positionning
if tixi.checkElement(pos_xpath + "/fromSectionUID"):
from_sec = tixi.getTextElement(pos_xpath +
"/fromSectionUID")
else:
from_sec = ""
from_sec_list.append(from_sec)
if tixi.checkElement(pos_xpath + "/toSectionUID"):
to_sec = tixi.getTextElement(pos_xpath + "/toSectionUID")
else:
to_sec = ""
to_sec_list.append(to_sec)
# Re-loop though the positionning to re-order them
for j_pos in range(pos_cnt):
if from_sec_list[j_pos] == "":
prev_pos_x = 0
prev_pos_y = 0
prev_pos_z = 0
elif from_sec_list[j_pos] == to_sec_list[j_pos - 1]:
prev_pos_x = pos_x_list[j_pos - 1]
prev_pos_y = pos_y_list[j_pos - 1]
prev_pos_z = pos_z_list[j_pos - 1]
else:
index_prev = to_sec_list.index(from_sec_list[j_pos])
prev_pos_x = pos_x_list[index_prev]
prev_pos_y = pos_y_list[index_prev]
prev_pos_z = pos_z_list[index_prev]
pos_x_list[j_pos] += prev_pos_x
pos_y_list[j_pos] += prev_pos_y
pos_z_list[j_pos] += prev_pos_z
else:
log.warning('No "positionings" have been found!')
pos_cnt = 0
# Sections
sec_cnt = tixi.getNamedChildrenCount(wing_xpath + "/sections",
"section")
log.info(" -" + str(sec_cnt) + " wing sections have been found")
wing_sec_index = 1
if pos_cnt == 0:
pos_x_list = [0.0] * sec_cnt
pos_y_list = [0.0] * sec_cnt
pos_z_list = [0.0] * sec_cnt
for i_sec in reversed(range(sec_cnt)):
sec_xpath = wing_xpath + "/sections/section[" + str(i_sec +
1) + "]"
sec_uid = tixi.getTextAttribute(sec_xpath, "uID")
sec_transf = Transformation()
sec_transf.get_cpacs_transf(tixi, sec_xpath)
# Elements
elem_cnt = tixi.getNamedChildrenCount(sec_xpath + "/elements",
"element")
if elem_cnt > 1:
log.warning("Sections " + sec_uid + " contains multiple \
element, it could be an issue for the conversion \
to SUMO!")
for i_elem in range(elem_cnt):
elem_xpath = sec_xpath + "/elements/element[" + str(i_elem +
1) + "]"
elem_uid = tixi.getTextAttribute(elem_xpath, "uID")
elem_transf = Transformation()
elem_transf.get_cpacs_transf(tixi, elem_xpath)
# Get wing profile (airfoil)
prof_uid = tixi.getTextElement(elem_xpath + "/airfoilUID")
prof_vect_x, prof_vect_y, prof_vect_z = get_profile_coord(
tixi, prof_uid)
# Apply scaling
for i, item in enumerate(prof_vect_x):
prof_vect_x[i] = (item * elem_transf.scaling.x *
sec_transf.scaling.x *
wing_transf.scaling.x)
for i, item in enumerate(prof_vect_y):
prof_vect_y[i] = (item * elem_transf.scaling.y *
sec_transf.scaling.y *
wing_transf.scaling.y)
for i, item in enumerate(prof_vect_z):
prof_vect_z[i] = (item * elem_transf.scaling.z *
sec_transf.scaling.z *
wing_transf.scaling.z)
# Plot setions (for tests)
# if (i_sec>8 and i_sec<=10):
# plt.plot(prof_vect_x, prof_vect_z,'x')
# plt.xlabel('x')
# plt.ylabel('z')
# plt.grid(True)
# plt.show()
prof_size_x = max(prof_vect_x) - min(prof_vect_x)
prof_size_y = max(prof_vect_y) - min(prof_vect_y)
prof_size_z = max(prof_vect_z) - min(prof_vect_z)
if prof_size_y == 0:
prof_vect_x[:] = [x / prof_size_x for x in prof_vect_x]
prof_vect_z[:] = [z / prof_size_x for z in prof_vect_z]
# Is it correct to divide by prof_size_x ????
wg_sec_chord = prof_size_x
else:
log.error("An airfoil profile is not define correctly")
# SUMO variable for WingSection
wg_sec_center_x = (elem_transf.translation.x +
sec_transf.translation.x +
pos_x_list[i_sec]) * wing_transf.scaling.x
wg_sec_center_y = (
elem_transf.translation.y * sec_transf.scaling.y +
sec_transf.translation.y +
pos_y_list[i_sec]) * wing_transf.scaling.y
wg_sec_center_z = (
elem_transf.translation.z * sec_transf.scaling.z +
sec_transf.translation.z +
pos_z_list[i_sec]) * wing_transf.scaling.z
# Add roation from element and sections
# Adding the two angles: Maybe not work in every case!!!
add_rotation = SimpleNamespace()
add_rotation.x = elem_transf.rotation.x + sec_transf.rotation.x
add_rotation.y = elem_transf.rotation.y + sec_transf.rotation.y
add_rotation.z = elem_transf.rotation.z + sec_transf.rotation.z
# Get Section rotation for SUMO
wg_sec_rot = euler2fix(add_rotation)
wg_sec_dihed = math.radians(wg_sec_rot.x)
wg_sec_twist = math.radians(wg_sec_rot.y)
wg_sec_yaw = math.radians(wg_sec_rot.z)
# Convert point list into string
prof_str = ""
# Airfoil points order : shoud be from TE (1 0) to LE (0 0)
# then TE(1 0), but not reverse way.
# to avoid double zero, not accepted by SUMO
for i, item in enumerate(prof_vect_x):
# if not (prof_vect_x[i] == prof_vect_x[i-1] or \
# round(prof_vect_z[i],4) == round(prof_vect_z[i-1],4)):
if round(prof_vect_z[i], 4) != round(
prof_vect_z[i - 1], 4):
prof_str += (str(round(prof_vect_x[i], 4)) + " " +
str(round(prof_vect_z[i], 4)) + " ")
sumo.addTextElementAtIndex(wg_sk_xpath, "WingSection",
prof_str, wing_sec_index)
wg_sec_xpath = wg_sk_xpath + "/WingSection[" + str(
wing_sec_index) + "]"
sumo.addTextAttribute(wg_sec_xpath, "airfoil", prof_uid)
sumo.addTextAttribute(wg_sec_xpath, "name", sec_uid)
wg_sec_center_str = (str(wg_sec_center_x) + " " +
str(wg_sec_center_y) + " " +
str(wg_sec_center_z))
sumo.addTextAttribute(wg_sec_xpath, "center",
wg_sec_center_str)
sumo.addTextAttribute(wg_sec_xpath, "chord", str(wg_sec_chord))
sumo.addTextAttribute(wg_sec_xpath, "dihedral",
str(wg_sec_dihed))
sumo.addTextAttribute(wg_sec_xpath, "twist", str(wg_sec_twist))
sumo.addTextAttribute(wg_sec_xpath, "yaw", str(wg_sec_yaw))
sumo.addTextAttribute(wg_sec_xpath, "napprox", "-1")
sumo.addTextAttribute(wg_sec_xpath, "reversed", "false")
sumo.addTextAttribute(wg_sec_xpath, "vbreak", "false")
wing_sec_index += 1
# Add Wing caps
add_wing_cap(sumo, wg_sk_xpath)
# Engyine pylon(s) ---------------------------------------------------------
inc_pylon_xpath = "/cpacs/toolspecific/CEASIOMpy/engine/includePylon"
include_pylon = get_value_or_default(tixi, inc_pylon_xpath, False)
if tixi.checkElement(PYLONS_XPATH) and include_pylon:
pylon_cnt = tixi.getNamedChildrenCount(PYLONS_XPATH, "enginePylon")
log.info(str(pylon_cnt) + " pylons has been found.")
else:
pylon_cnt = 0
log.warning("No pylon has been found in this CPACS file!")
for i_pylon in range(pylon_cnt):
pylon_xpath = PYLONS_XPATH + "/enginePylon[" + str(i_pylon + 1) + "]"
pylon_uid = tixi.getTextAttribute(pylon_xpath, "uID")
pylon_transf = Transformation()
pylon_transf.get_cpacs_transf(tixi, pylon_xpath)
# Create new wing (SUMO) Pylons will be modeled as a wings
sumo.createElementAtIndex("/Assembly", "WingSkeleton", i_pylon + 1)
wg_sk_xpath = "/Assembly/WingSkeleton[" + str(i_pylon + 1) + "]"
sumo.addTextAttribute(wg_sk_xpath, "akimatg", "false")
sumo.addTextAttribute(wg_sk_xpath, "name", pylon_uid)
# Create a class for the transformation of the WingSkeleton
wg_sk_tansf = Transformation()
# Convert WingSkeleton rotation and add it to SUMO
wg_sk_tansf.rotation = euler2fix(pylon_transf.rotation)
wg_sk_rot_str = sumo_str_format(
math.radians(wg_sk_tansf.rotation.x),
math.radians(wg_sk_tansf.rotation.y),
math.radians(wg_sk_tansf.rotation.z),
)
sumo.addTextAttribute(wg_sk_xpath, "rotation", wg_sk_rot_str)
# Add WingSkeleton origin
wg_sk_tansf.translation = pylon_transf.translation
sumo.addTextAttribute(
wg_sk_xpath,
"origin",
sumo_str_format(wg_sk_tansf.translation.x,
wg_sk_tansf.translation.y,
wg_sk_tansf.translation.z),
)
sumo.addTextAttribute(wg_sk_xpath, "flags", "detectwinglet")
# Positionings
if tixi.checkElement(pylon_xpath + "/positionings"):
pos_cnt = tixi.getNamedChildrenCount(pylon_xpath + "/positionings",
"positioning")
log.info(str(pylon_cnt) + ' "positionning" has been found : ')
pos_x_list = []
pos_y_list = []
pos_z_list = []
from_sec_list = []
to_sec_list = []
for i_pos in range(pos_cnt):
pos_xpath = pylon_xpath + "/positionings/positioning[" + str(
i_pos + 1) + "]"
length = tixi.getDoubleElement(pos_xpath + "/length")
sweep_deg = tixi.getDoubleElement(pos_xpath + "/sweepAngle")
sweep = math.radians(sweep_deg)
dihedral_deg = tixi.getDoubleElement(pos_xpath +
"/dihedralAngle")
dihedral = math.radians(dihedral_deg)
# Get the corresponding translation of each positionning
pos_x_list.append(length * math.sin(sweep))
pos_y_list.append(length * math.cos(dihedral) *
math.cos(sweep))
pos_z_list.append(length * math.sin(dihedral) *
math.cos(sweep))
# Get which section are connected by the positionning
if tixi.checkElement(pos_xpath + "/fromSectionUID"):
from_sec = tixi.getTextElement(pos_xpath +
"/fromSectionUID")
else:
from_sec = ""
from_sec_list.append(from_sec)
if tixi.checkElement(pos_xpath + "/toSectionUID"):
to_sec = tixi.getTextElement(pos_xpath + "/toSectionUID")
else:
to_sec = ""
to_sec_list.append(to_sec)
# Re-loop though the positionning to re-order them
for j_pos in range(pos_cnt):
if from_sec_list[j_pos] == "":
prev_pos_x = 0
prev_pos_y = 0
prev_pos_z = 0
elif from_sec_list[j_pos] == to_sec_list[j_pos - 1]:
prev_pos_x = pos_x_list[j_pos - 1]
prev_pos_y = pos_y_list[j_pos - 1]
prev_pos_z = pos_z_list[j_pos - 1]
else:
index_prev = to_sec_list.index(from_sec_list[j_pos])
prev_pos_x = pos_x_list[index_prev]
prev_pos_y = pos_y_list[index_prev]
prev_pos_z = pos_z_list[index_prev]
pos_x_list[j_pos] += prev_pos_x
pos_y_list[j_pos] += prev_pos_y
pos_z_list[j_pos] += prev_pos_z
else:
log.warning('No "positionings" have been found!')
pos_cnt = 0
# Sections
sec_cnt = tixi.getNamedChildrenCount(pylon_xpath + "/sections",
"section")
log.info(" -" + str(sec_cnt) + " wing sections have been found")
wing_sec_index = 1
if pos_cnt == 0:
pos_x_list = [0.0] * sec_cnt
pos_y_list = [0.0] * sec_cnt
pos_z_list = [0.0] * sec_cnt
check_reversed_wing = []
for i_sec in range(sec_cnt):
# for i_sec in reversed(range(sec_cnt)):
sec_xpath = pylon_xpath + "/sections/section[" + str(i_sec +
1) + "]"
sec_uid = tixi.getTextAttribute(sec_xpath, "uID")
sec_transf = Transformation()
sec_transf.get_cpacs_transf(tixi, sec_xpath)
# Elements
elem_cnt = tixi.getNamedChildrenCount(sec_xpath + "/elements",
"element")
if elem_cnt > 1:
log.warning("Sections " + sec_uid + " contains multiple \
element, it could be an issue for the conversion \
to SUMO!")
for i_elem in range(elem_cnt):
elem_xpath = sec_xpath + "/elements/element[" + str(i_elem +
1) + "]"
elem_uid = tixi.getTextAttribute(elem_xpath, "uID")
elem_transf = Transformation()
elem_transf.get_cpacs_transf(tixi, elem_xpath)
# Get pylon profile (airfoil)
prof_uid = tixi.getTextElement(elem_xpath + "/airfoilUID")
prof_vect_x, prof_vect_y, prof_vect_z = get_profile_coord(
tixi, prof_uid)
# Apply scaling
for i, item in enumerate(prof_vect_x):
prof_vect_x[i] = (item * elem_transf.scaling.x *
sec_transf.scaling.x *
pylon_transf.scaling.x)
for i, item in enumerate(prof_vect_y):
prof_vect_y[i] = (item * elem_transf.scaling.y *
sec_transf.scaling.y *
pylon_transf.scaling.y)
for i, item in enumerate(prof_vect_z):
prof_vect_z[i] = (item * elem_transf.scaling.z *
sec_transf.scaling.z *
pylon_transf.scaling.z)
prof_size_x = max(prof_vect_x) - min(prof_vect_x)
prof_size_y = max(prof_vect_y) - min(prof_vect_y)
prof_size_z = max(prof_vect_z) - min(prof_vect_z)
if prof_size_y == 0:
prof_vect_x[:] = [x / prof_size_x for x in prof_vect_x]
prof_vect_z[:] = [z / prof_size_x for z in prof_vect_z]
# Is it correct to divide by prof_size_x ????
wg_sec_chord = prof_size_x
else:
log.error("An airfoil profile is not define correctly")
# SUMO variable for WingSection
wg_sec_center_x = (elem_transf.translation.x +
sec_transf.translation.x +
pos_x_list[i_sec]) * pylon_transf.scaling.x
wg_sec_center_y = (
elem_transf.translation.y * sec_transf.scaling.y +
sec_transf.translation.y +
pos_y_list[i_sec]) * pylon_transf.scaling.y
wg_sec_center_z = (
elem_transf.translation.z * sec_transf.scaling.z +
sec_transf.translation.z +
pos_z_list[i_sec]) * pylon_transf.scaling.z
check_reversed_wing.append(wg_sec_center_y)
# Add roation from element and sections
# Adding the two angles: Maybe not work in every case!!!
add_rotation = SimpleNamespace()
add_rotation.x = elem_transf.rotation.x + sec_transf.rotation.x
add_rotation.y = elem_transf.rotation.y + sec_transf.rotation.y
add_rotation.z = elem_transf.rotation.z + sec_transf.rotation.z
# Get Section rotation for SUMO
wg_sec_rot = euler2fix(add_rotation)
wg_sec_dihed = math.radians(wg_sec_rot.x)
wg_sec_twist = math.radians(wg_sec_rot.y)
wg_sec_yaw = math.radians(wg_sec_rot.z)
# Convert point list into string
prof_str = ""
# Airfoil points order : should be from TE (1 0) to LE (0 0)
# then TE(1 0), but not reverse way.
# to avoid double zero, not accepted by SUMO
for i, item in enumerate(prof_vect_x):
# if not (prof_vect_x[i] == prof_vect_x[i-1] or \
# round(prof_vect_z[i],4) == round(prof_vect_z[i-1],4)):
if round(prof_vect_z[i], 4) != round(
prof_vect_z[i - 1], 4):
prof_str += (str(round(prof_vect_x[i], 4)) + " " +
str(round(prof_vect_z[i], 4)) + " ")
sumo.addTextElementAtIndex(wg_sk_xpath, "WingSection",
prof_str, wing_sec_index)
wg_sec_xpath = wg_sk_xpath + "/WingSection[" + str(
wing_sec_index) + "]"
sumo.addTextAttribute(wg_sec_xpath, "airfoil", prof_uid)
sumo.addTextAttribute(wg_sec_xpath, "name", sec_uid)
sumo.addTextAttribute(
wg_sec_xpath,
"center",
sumo_str_format(wg_sec_center_x, wg_sec_center_y,
wg_sec_center_z),
)
sumo.addTextAttribute(wg_sec_xpath, "chord", str(wg_sec_chord))
sumo.addTextAttribute(wg_sec_xpath, "dihedral",
str(wg_sec_dihed))
sumo.addTextAttribute(wg_sec_xpath, "twist", str(wg_sec_twist))
sumo.addTextAttribute(wg_sec_xpath, "yaw", str(wg_sec_yaw))
sumo.addTextAttribute(wg_sec_xpath, "napprox", "-1")
sumo.addTextAttribute(wg_sec_xpath, "reversed", "false")
sumo.addTextAttribute(wg_sec_xpath, "vbreak", "false")
wing_sec_index += 1
# Check if the wing section order must be inverted with reversed attribute
if check_reversed_wing[0] < check_reversed_wing[1]:
log.info("Wing section order will be reversed.")
for i_sec in range(sec_cnt):
wg_sec_xpath = wg_sk_xpath + "/WingSection[" + str(i_sec +
1) + "]"
sumo.removeAttribute(wg_sec_xpath, "reversed")
sumo.addTextAttribute(wg_sec_xpath, "reversed", "true")
# If symmetry, create a mirror copy of the Pylon
if tixi.checkAttribute(pylon_xpath, "symmetry"):
if tixi.getTextAttribute(pylon_xpath, "symmetry") == "x-z-plane":
sumo_mirror_copy(sumo, wg_sk_xpath, pylon_uid, True)
add_wing_cap(sumo, wg_sk_xpath)
# Engine(s) ----------------------------------------------------------------
inc_engine_xpath = "/cpacs/toolspecific/CEASIOMpy/engine/includeEngine"
include_engine = get_value_or_default(tixi, inc_engine_xpath, False)
if tixi.checkElement(ENGINES_XPATH) and include_engine:
engine_cnt = tixi.getNamedChildrenCount(ENGINES_XPATH, "engine")
log.info(str(engine_cnt) + " engines has been found.")
else:
engine_cnt = 0
log.warning("No engine has been found in this CPACS file!")
for i_engine in range(engine_cnt):
engine_xpath = ENGINES_XPATH + "/engine[" + str(i_engine + 1) + "]"
engine = Engine(tixi, engine_xpath)
# Nacelle (sumo)
xengtransl = engine.transf.translation.x
yengtransl = engine.transf.translation.y
zengtransl = engine.transf.translation.z
engineparts = [
engine.nacelle.fancowl, engine.nacelle.corecowl,
engine.nacelle.centercowl
]
for engpart in engineparts:
if not engpart.isengpart:
log.info("This engine part is not define.")
continue
if engpart.iscone:
xcontours = engpart.pointlist.xlist
ycontours = engpart.pointlist.ylist
xengtransl += engpart.xoffset
ysectransl = 0
zsectransl = 0
else:
xlist = engpart.section.pointlist.xlist
ylist = engpart.section.pointlist.ylist
xscaling = engpart.section.transf.scaling.x
zscaling = engpart.section.transf.scaling.z
# Why scaling z for point in y??? CPACS mystery...
xlist = [i * xscaling for i in xlist]
ylist = [i * zscaling for i in ylist]
# Nacelle parts contour points
# In CPACS nacelles are define as the revolution of section, in SUMO they have to
# be define as a body composed of section + a lip at the inlet
# Find upper part of the profile
xminidx = xlist.index(min(xlist))
yavg1 = sum(ylist[0:xminidx]) / (xminidx)
yavg2 = sum(ylist[xminidx:-1]) / (len(ylist) - xminidx)
if yavg1 > yavg2:
xcontours = xlist[0:xminidx]
ycontours = ylist[0:xminidx]
else:
xcontours = xlist[xminidx:-1]
ycontours = ylist[xminidx:-1]
ysectransl = engpart.section.transf.translation.y
zsectransl = engpart.section.transf.translation.z
# # Plot
# fig, ax = plt.subplots()
# ax.plot(xlist, ylist,'x')
# ax.plot(xcontours, ycontours,'or')
# ax.set(xlabel='x', ylabel='y',title='Engine profile')
# ax.grid()
# plt.show()
sumo.createElementAtIndex("/Assembly", "BodySkeleton", i_fus + 1)
body_xpath = "/Assembly/BodySkeleton[" + str(i_fus + 1) + "]"
sumo.addTextAttribute(body_xpath, "akimatg", "false")
sumo.addTextAttribute(body_xpath, "name", engpart.uid)
# Add body rotation and origin
sumo.addTextAttribute(body_xpath, "rotation",
sumo_str_format(0, 0, 0))
sumo.addTextAttribute(
body_xpath,
"origin",
sumo_str_format(xengtransl + ysectransl, yengtransl,
zengtransl),
)
# Add section
for i_sec in range(len(xcontours)):
namesec = "section_" + str(i_sec + 1)
# Only circle profiles
prof_str = " 0 -1 0.7071 -0.7071 1 0 0.7071 0.7071 0 1"
sumo.addTextElementAtIndex(body_xpath, "BodyFrame", prof_str,
i_sec + 1)
frame_xpath = body_xpath + "/BodyFrame[" + str(i_sec + 1) + "]"
diam = (ycontours[i_sec] + zsectransl) * 2
if diam < 0.01:
diam = 0.01
sumo.addTextAttribute(frame_xpath, "center",
sumo_str_format(xcontours[i_sec], 0, 0))
sumo.addTextAttribute(frame_xpath, "height", str(diam))
sumo.addTextAttribute(frame_xpath, "width", str(diam))
sumo.addTextAttribute(frame_xpath, "name", namesec)
# Nacelle/engine options
sumo_add_nacelle_lip(sumo, body_xpath)
if not engpart.iscone:
sumo_add_engine_bc(sumo, "Engine", engpart.uid)
if engine.sym:
sumo.createElementAtIndex("/Assembly", "BodySkeleton",
i_fus + 1)
body_xpath = "/Assembly/BodySkeleton[" + str(i_fus + 1) + "]"
sumo.addTextAttribute(body_xpath, "akimatg", "false")
sumo.addTextAttribute(body_xpath, "name", engpart.uid + "_sym")
# Add body rotation and origin
sumo.addTextAttribute(body_xpath, "rotation",
sumo_str_format(0, 0, 0))
sumo.addTextAttribute(
body_xpath,
"origin",
sumo_str_format(xengtransl + ysectransl, -yengtransl,
zengtransl),
)
# Add section
for i_sec in range(len(xcontours)):
namesec = "section_" + str(i_sec + 1)
# Only circle profiles
prof_str = " 0 -1 0.7071 -0.7071 1 0 0.7071 0.7071 0 1"
sumo.addTextElementAtIndex(body_xpath, "BodyFrame",
prof_str, i_sec + 1)
frame_xpath = body_xpath + "/BodyFrame[" + str(i_sec +
1) + "]"
diam = (ycontours[i_sec] + zsectransl) * 2
if diam < 0.01:
diam = 0.01
sumo.addTextAttribute(
frame_xpath, "center",
sumo_str_format(xcontours[i_sec], 0, 0))
sumo.addTextAttribute(frame_xpath, "height", str(diam))
sumo.addTextAttribute(frame_xpath, "width", str(diam))
sumo.addTextAttribute(frame_xpath, "name", namesec)
# Nacelle/Enine options
sumo_add_nacelle_lip(sumo, body_xpath)
if not engpart.iscone:
sumo_add_engine_bc(sumo, "Engine_sym",
engpart.uid + "_sym")
# Get results directory
results_dir = get_results_directory("CPACS2SUMO")
sumo_file_path = Path(results_dir, "ToolOutput.smx")
create_branch(tixi, SUMOFILE_XPATH)
tixi.updateTextElement(SUMOFILE_XPATH, str(sumo_file_path))
# Save CPACS and SMX file
tixi.save(cpacs_out_path)
sumo.save(str(sumo_file_path))