def fit_glider_3d(cls, glider, numpoints=3):
"""
Create a parametric model from glider
"""
shape = glider.shape_simple
front, back = shape.front, shape.back
arc = [rib.pos[1:] for rib in glider.ribs]
aoa = [[front[i][0], rib.aoa_relative] for i, rib in enumerate(glider.ribs)]
zrot = [[front[i][0], rib.zrot] for i, rib in enumerate(glider.ribs)]
def symmetric_fit(polyline, numpoints=numpoints):
mirrored = PolyLine2D(polyline[1:]).mirror([0, 0], [0, 1])
symmetric = mirrored[::-1].join(polyline[int(glider.has_center_cell):])
return SymmetricBezier.fit(symmetric, numpoints=numpoints)
front_bezier = symmetric_fit(front)
back_bezier = symmetric_fit(back)
arc_bezier = symmetric_fit(arc)
aoa_bezier = symmetric_fit(aoa)
zrot_bezier = symmetric_fit(zrot)
cell_num = len(glider.cells) * 2 - glider.has_center_cell
front[0][0] = 0 # for midribs
start = (2 - glider.has_center_cell) / cell_num
const_arr = [0.] + np.linspace(start, 1, len(front) - 1).tolist()
rib_pos = [p[0] for p in front]
cell_centers = [(p1+p2)/2 for p1, p2 in zip(rib_pos[:-1], rib_pos[1:])]
rib_pos_int = Interpolation(zip([0] + rib_pos[1:], const_arr))
rib_distribution = [[i, rib_pos_int(i)] for i in np.linspace(0, rib_pos[-1], 30)]
rib_distribution = Bezier.fit(rib_distribution, numpoints=numpoints+3)
profiles = [rib.profile_2d for rib in glider.ribs]
profile_dist = Bezier.fit([[i, i] for i, rib in enumerate(front)],
numpoints=numpoints)
balloonings = [cell.ballooning for cell in glider.cells]
ballooning_dist = Bezier.fit([[i, i] for i, rib in enumerate(front[1:])],
numpoints=numpoints)
zrot = Bezier([[0, 0], [front.last()[0], 0]])
# TODO: lineset, dist-curce->xvalues
parametric_shape = ParametricShape(front_bezier, back_bezier, rib_distribution, cell_num)
parametric_arc = ArcCurve(arc_bezier)
return cls(shape=parametric_shape,
arc=parametric_arc,
aoa=aoa_bezier,
zrot=zrot_bezier,
profiles=profiles,
profile_merge_curve=profile_dist,
balloonings=balloonings,
ballooning_merge_curve=ballooning_dist,
glide=glider.glide,
speed=10,
lineset=LineSet2D([]))
def __init__(self,
yvalue,
front_cut,
back_cut=1,
func=None,
name="minirib"):
#Profile3D.__init__(self, [], name)
if not func: # Function is a bezier-function depending on front/back
if front_cut > 0:
points = [[front_cut, 1],
[front_cut * 2. / 3 + back_cut * 1. / 3, 0]] #
else:
points = [[front_cut, 0]]
if back_cut < 1:
points = points + [[front_cut * 1. / 3 + back_cut * 2. / 3, 0],
[back_cut, 1]]
else:
points = points + [[back_cut, 0]]
func = Bezier(points).interpolation()
self.__function__ = func
self.y_value = yvalue
self.front_cut = front_cut
self.back_cut = back_cut
def get_flattened(self, rib, numpoints=30):
curve = [[self.end, 0.75], [self.end - 0.05, 1], [self.front, 0],
[self.end - 0.05, -1], [self.end, -0.75]]
profile = rib.profile_2d
cp = [profile.align(point) * rib.chord for point in curve]
return Bezier(cp).interpolation(numpoints)
def __init__(self, obj):
super(AirfoilMergeTool, self).__init__(obj)
self.scal = numpy.array([1, 0.2])
self.x_grid = [i[0] for i in self.front if i[0] >= 0]
self.set_end_points()
self.bezier_curve = self.parametric_glider.profile_merge_curve
self.bezier_curve = Bezier(
[self.scal * i for i in self.bezier_curve.controlpoints])
self.bezier_cpc.control_pos = vector3D(self.bezier_curve.controlpoints)
self.fix_end_points()
def __init__(self, obj):
super(BaseMergeTool, self).__init__(obj)
self.bezier_curve = Bezier([[0, 0], [1, 1]])
self.bezier_cpc = ControlPointContainer(
self.bezier_curve.controlpoints, self.view)
self.shape = coin.SoSeparator()
self.grid = coin.SoSeparator()
self.coords = coin.SoSeparator()
self.expl_curve = Line([])
_shape = self.parametric_glider.shape.get_half_shape()
self.ribs = _shape.ribs
self.front = _shape.front
self.back = _shape.back
self.bezier_cpc.on_drag.append(self.update_spline)
self.setup_widget()
self.setup_pivy()
def setUp(self):
controlpoints = [[i, random.random()] for i in range(15)]
self.bezier = Bezier(controlpoints)
def __init__(self, control_points, num=50):
self.bezier_curve = Bezier(controlpoints=control_points)
self.num = num
points = self.bezier_curve.get_sequence(num)
super(Spline, self).__init__(points)
