def setUp(self, numpoints=100):
self.prof1 = Profile2D.compute_naca(1223)
self.prof2 = Profile2D.compute_naca(1223)
for prof in [self.prof1, self.prof2]:
naca = random.randint(1, 1399)
#prof.compute_naca(naca=1223, numpoints=numpoints)
prof.close()
prof.normalize()
self.ballooning = BallooningBezier()
self.rib2 = Rib(self.prof1, self.ballooning, [0., 0.12, 0], 1.,
20 * math.pi / 180, 2 * math.pi / 180, 0, 7.)
self.rib3 = Rib(self.prof2, self.ballooning, [0.2, 0.3, -0.1], 0.8,
30 * math.pi / 180, 5 * math.pi / 180, 0, 7.)
self.rib1 = self.rib2.copy()
self.rib1.mirror()
self.cell1 = Cell(self.rib1, self.rib2)
self.cell2 = Cell(self.rib2, self.rib3)
#MiniRib(0.2, 0.8, 1),
MiniRib(0.5, 0.7, 1),
#MiniRib(0.8, 0.8, 1),
]
b1 = BallooningBezier()
b2 = BallooningBezier()
b2.Amount *= 0.8
r2 = Rib(a, b1, [0, 0.12, 0], 1., 20 * math.pi / 180, 2 * math.pi / 180, 0, 7)
r1 = r2.copy()
r1.mirror()
r3 = Rib(a, b2, [0.2, 0.3, -0.1], 0.8, 30 * math.pi / 180, 5 * math.pi / 180, 0, 7)
cell1 = Cell(r1, r2, midribs)
cell1.recalc()
cell2 = Cell(r2, r3, [])
cell2.recalc()
num = 20
#ribs = [cell1.midrib(x*1./num) for x in range(num+1)]
#ribs += [cell2.midrib(x*1./num) for x in range(num+1)]
#G.Graphics3D([G.Line(r1.profile_3d.data),G.Line(r2.profile_3d.data),G.Line([[0.,0.,0.],[1.,0.,0.]]),G.Line([[0.,0.,0.],[0.,0.5,0.]])])
#Graph.Graphics3D([Graph.Line(x.data) for x in ribs])
ribs = []
for x in range(num + 1):
ribs.append(cell1.midrib(x * 1. / num).data)
for x in range(1, num + 1):
ribs.append(cell2.midrib(x * 1. / num).data)
ribs = numpy.concatenate(ribs)
def import_ods(filename, glider=None):
ods = ezodf.opendoc(filename)
sheets = ods.sheets
# Profiles -> map xvalues
profiles = [Profile2D(profile) for profile in transpose_columns(sheets[3])]
xvalues = sorted(profiles, key=lambda prof: prof.numpoints)[0].x_values # Use airfoil with maximum profilepoints
for profile in profiles:
profile.x_values = xvalues
# Ballooning old : 1-8 > upper (prepend/append (0,0),(1,0)), 9-16 > lower (same + * (1,-1))
balloonings_temp = transpose_columns(sheets[4])
balloonings = []
for baloon in balloonings_temp:
upper = [[0, 0]] + baloon[:7] + [[1, 0]]
lower = [[0, 0]] + [[i[0], -1 * i[1]] for i in baloon[8:15]] + [[1, 0]]
balloonings.append(BallooningBezier([upper, lower]))
# Data
data = {}
datasheet = sheets[-1]
assert isinstance(datasheet, ezodf.Sheet)
for i in range(datasheet.nrows()):
data[datasheet.get_cell([i, 0]).value] = datasheet.get_cell([i, 1]).value
#print(data["GLEITZAHL"])
glider.data = data
cells = []
main = sheets[0]
x = y = z = span_last = 0.
alpha2 = 0.
thisrib = None
# TODO: Glide -> DATAIMPORT
for i in range(1, main.nrows()):
line = [main.get_cell([i, j]).value for j in range(main.ncols())]
if not line[0]:
#print("leere zeile:", i, main.nrows())
break
chord = line[1] # Rib-Chord
span = line[2] # spanwise-length (flat)
alpha1 = alpha2 # angle before the rib
alpha2 += line[4] * numpy.pi / 180 # angle after the rib
alpha = (span > 0) * (alpha1 + alpha2) * 0.5 + line[6] * numpy.pi / 180 # rib's angle
x = line[3] # x-value -> front/back (ribwise)
y += numpy.cos(alpha1) * (span - span_last) # y-value -> spanwise
z -= numpy.sin(alpha1) * (span - span_last) # z-axis -> up/down
aoa = line[5] * numpy.pi / 180
zrot = line[7] * numpy.pi / 180
span_last = span
profile = merge(line[8], profiles)
ballooning = merge(line[9], balloonings)
lastrib = thisrib
thisrib = Rib(profile, ballooning, numpy.array([x, y, z]), chord, alpha, aoa, zrot, data["GLEITZAHL"])
if i == 1 and y != 0: # Middle-cell
#print("midrib!", y)
lastrib = thisrib.copy()
lastrib.mirror()
if lastrib:
cell = Cell(lastrib, thisrib, [])
cell.name = "Cell_no"+str(i)
cells.append(cell)
if glider:
glider.cells = cells
glider.close_rib()
glider.attachment_points = read_elements(sheets[2], "AHP", AttachmentPoint)
glider.attachment_points_lower = get_lower_aufhaengepunkte(glider.data)
for p in glider.attachment_points:
p.force = numpy.array([0, 0, 1])
p.get_position(glider)
glider.lines = tolist_lines(sheets[6], glider.attachment_points_lower, glider.attachment_points)
glider.lines.calc_geo()
glider.lines.calc_sag()
return
return cells
def import_ods(filename, glider):
ods = ezodf.opendoc(filename)
sheets = ods.sheets
# Profiles -> map xvalues
profiles = [Profile2D(profile) for profile in transpose_columns(sheets[3])]
xvalues = sorted(profiles, key=lambda prof: prof.numpoints)[0].x_values # Use airfoil with maximum profilepoints
for profile in profiles:
profile.x_values = xvalues
# Ballooning old : 1-8 > upper (prepend/append (0,0),(1,0)), 9-16 > lower (same + * (1,-1))
balloonings_temp = transpose_columns(sheets[4])
balloonings = []
for baloon in balloonings_temp:
upper = [[0, 0]] + baloon[:7] + [[1, 0]]
lower = [[0, 0]] + [[i[0], -1 * i[1]] for i in baloon[8:15]] + [[1, 0]]
balloonings.append(BallooningBezier(upper, lower))
# Data
data = {}
datasheet = sheets[-1]
assert isinstance(datasheet, ezodf.Sheet)
for i in range(datasheet.nrows()):
data[datasheet.get_cell([i, 0]).value] = datasheet.get_cell([i, 1]).value
#print(data["GLEITZAHL"])
glider.data = data
cells = []
main = sheets[0]
x = y = z = span_last = 0.
alpha2 = 0.
thisrib = None
for i in range(1, main.nrows()):
line = [main.get_cell([i, j]).value for j in range(main.ncols())]
if not line[0]:
break # skip empty line
chord = line[1] # Rib-Chord
span = line[2] # spanwise-length (flat)
alpha1 = alpha2 # angle before the rib
alpha2 += line[4] * np.pi / 180 # angle after the rib
alpha = (span > 0) * (alpha1 + alpha2) * 0.5 + line[6] * np.pi / 180 # rib's angle
x = line[3] # x-value -> front/back (ribwise)
y += np.cos(alpha1) * (span - span_last) # y-value -> spanwise
z -= np.sin(alpha1) * (span - span_last) # z-axis -> up/down
aoa = line[5] * np.pi / 180
zrot = line[7] * np.pi / 180
span_last = span
profile = merge(line[8], profiles)
ballooning = merge(line[9], balloonings)
lastrib = thisrib
thisrib = Rib(profile, np.array([x, y, z]), chord, alpha, aoa, zrot, data["GLIDE"],
name="Rib ({})".format(i))
if i == 1 and y != 0: # Middle-cell
#print("midrib!", y)
lastrib = thisrib.copy()
lastrib.mirror()
if lastrib:
cell = Cell(lastrib, thisrib, ballooning)
cell.name = "Cell_no"+str(i)
cells.append(cell)
glider.cells = cells
glider.close_rib()
######################################LINESET######################################################
attachment_points = [AttachmentPoint(glider.ribs[args[0]], args[1], args[2]) for args in read_elements(sheets[2], "AHP", len_data=2)]
attachment_points.sort(key=lambda element: element.name)
attachment_points_lower = get_lower_aufhaengepunkte(glider.data)
for p in attachment_points:
p.force = np.array([0, 0, 10])
p.get_position()
glider.lineset = tolist_lines(sheets[6], attachment_points_lower, attachment_points)
glider.lineset.recalc()
####################################PANELS##########################################################
cuts = [cut+[1, glider.data["Designzugabe"]] for cut in read_elements(sheets[1], "DESIGNO")]
cuts += [cut+[1, glider.data["Designzugabe"]] for cut in read_elements(sheets[1], "DESIGNM")]
cuts += [cut+[2, glider.data["EKzugabe"]] for cut in read_elements(sheets[1], "EKV")]
cuts += [cut+[2, glider.data["EKzugabe"]] for cut in read_elements(sheets[1], "EKH")]
for i, cell in enumerate(glider.cells): # cut = [cell_no, x_left, x_right, cut_type, amount_add]
cuts_this = [cut for cut in cuts if cut[0] == i]
cuts_this.sort(key=lambda cut: cut[1])
cuts_this.sort(key=lambda cut: cut[2])
# Insert leading-/trailing-edge
cuts_this.insert(0, [i, -1, -1, 3, glider.data["HKzugabe"]])
cuts_this.append([i, 1, 1, 3, glider.data["HKzugabe"]])
cell.panels = []
for j in range(len(cuts_this)-1):
if cuts_this[j][3] != 2 or cuts_this[j+1][3] != 2: # skip entry
cell.panels.append(Panel(cuts_this[j][1:], cuts_this[j+1][1:]))
return glider
import tempfile from openglider.airfoil.parametric import BezierProfile2D from openglider.glider.cell import Cell from openglider.glider.rib import Rib from openglider.glider import Glider from openglider.glider.ballooning import BallooningBezier from openglider.graphics import Graphics3D, Polygon, Line from openglider.glider.in_out.export_3d import export_obj path = "/tmp/cell.obj" # a tool to optimize a parafoil for a given cell geometry ar = 0.1 bal = BallooningBezier() profile = BezierProfile2D.compute_naca(2412) rib0 = Rib(profile, [0, -ar / 2, 0], 1, 0., 0., 0., 999999.) rib1 = Rib(profile, [0, ar / 2, 0], 1, 0., 0., 0., 999999.) cell1 = Cell(rib0, rib1, bal) glider = Glider([cell1]) export_obj(glider, path, midribs=40, numpoints=50, floatnum=6, copy=False)
def get_glider_3d(self, glider=None, num=50, num_profile=None):
"""returns a new glider from parametric values"""
glider = glider or Glider()
ribs = []
self.rescale_curves()
x_values = self.shape.rib_x_values
shape_ribs = self.shape.ribs
profile_merge_curve = self.profile_merge_curve.interpolation(num=num)
ballooning_merge_curve = self.ballooning_merge_curve.interpolation(
num=num)
aoa_int = self.aoa.interpolation(num=num)
zrot_int = self.zrot.interpolation(num=num)
arc_pos = list(self.arc.get_arc_positions(x_values))
rib_angles = self.arc.get_rib_angles(x_values)
if self.num_profile is not None:
num_profile = self.num_profile
if num_profile is not None:
profile_x_values = Distribution.from_cos_distribution(num_profile)
else:
profile_x_values = self.profiles[0].x_values
rib_holes = self.elements.get("holes", [])
rigids = self.elements.get("rigidfoils", [])
cell_centers = [(p1 + p2) / 2
for p1, p2 in zip(x_values[:-1], x_values[1:])]
offset_x = shape_ribs[0][0][1]
for rib_no, pos in enumerate(x_values):
front, back = shape_ribs[rib_no]
arc = arc_pos[rib_no]
startpoint = np.array([-front[1] + offset_x, arc[0], arc[1]])
chord = abs(front[1] - back[1])
factor = profile_merge_curve(abs(pos))
profile = self.get_merge_profile(factor)
profile.name = "Profile{}".format(rib_no)
profile.x_values = profile_x_values
this_rib_holes = [
RibHole(ribhole["pos"], ribhole["size"])
for ribhole in rib_holes if rib_no in ribhole["ribs"]
]
this_rigid_foils = [
RigidFoil(rigid["start"], rigid["end"], rigid["distance"])
for rigid in rigids if rib_no in rigid["ribs"]
]
ribs.append(
Rib(profile_2d=profile,
startpoint=startpoint,
chord=chord,
arcang=rib_angles[rib_no],
glide=self.glide,
aoa_absolute=aoa_int(pos),
zrot=zrot_int(pos),
holes=this_rib_holes,
rigidfoils=this_rigid_foils,
name="rib{}".format(rib_no)))
ribs[-1].aoa_relative = aoa_int(pos)
if self.shape.has_center_cell:
new_rib = ribs[0].copy()
new_rib.name = "rib0"
new_rib.mirror()
new_rib.mirrored_rib = ribs[0]
ribs.insert(0, new_rib)
cell_centers.insert(0, 0.)
glider.cells = []
for cell_no, (rib1, rib2) in enumerate(zip(ribs[:-1], ribs[1:])):
ballooning_factor = ballooning_merge_curve(cell_centers[cell_no])
ballooning = self.merge_ballooning(ballooning_factor)
cell = Cell(rib1, rib2, ballooning, name="c{}".format(cell_no + 1))
glider.cells.append(cell)
glider.close_rib()
# CELL-ELEMENTS
self.get_panels(glider)
self.apply_diagonals(glider)
for minirib in self.elements.get("miniribs", []):
data = minirib.copy()
cells = data.pop("cells")
for cell_no in cells:
glider.cells[cell_no].miniribs.append(MiniRib(**data))
# RIB-ELEMENTS
#self.apply_holes(glider)
glider.rename_parts()
glider.lineset = self.lineset.return_lineset(glider, self.v_inf)
glider.lineset.glider = glider
glider.lineset.calculate_sag = False
for _ in range(3):
glider.lineset.recalc()
glider.lineset.calculate_sag = True
glider.lineset.recalc()
return glider
prof.importdat(os.path.dirname(os.path.abspath(__file__)) + "/testprofile.dat")
ballooning = BallooningBezier()
balloon = [ballooning(i) for i in prof.x_values]
r1 = Rib(prof, ballooning, [0., 0.12, 0], 1., 20 * math.pi / 180,
2 * math.pi / 180, 0, 7.)
r2 = r1.copy()
r2.mirror()
left, right = flatten_list(r2.profile_3d.data, r1.profile_3d.data)
ding = [numpy.array([0, 0]), numpy.array([1., 0])]
#[numpy.array([0,0]),numpy.array([1,0])
cell = Cell(r1, r2)
left2, right2 = flattened_cell(cell)
left_out = left2.copy()
left_out.add_stuff(-0.02)
right_out = right2.copy()
right_out.add_stuff(0.02)
openglider.graphics.Graphics2D([
openglider.graphics.Line(left.data),
openglider.graphics.Line(right.data),
openglider.graphics.Line(left2.data),
openglider.graphics.Line(right2.data),
openglider.graphics.Line(left_out.data),
openglider.graphics.Line(right_out.data)
])