def draw_wings(self, offset):
"""Draw the hanging metal wings with the screw holes.
"""
w = 0.5 * (self.outer_width - self.inner_width) - self.corner_radius
l = self.wing_length - 2. * self.corner_radius
p = Point(0.5 * self.wing_length, 0.5 * self.inner_width)
Line(p, p.vmove(w)).draw(offset).\
connecting_circular_arc(self.corner_radius, 90.).draw(offset).\
connecting_line(l).draw(offset).\
connecting_circular_arc(self.corner_radius, 90.).draw(offset).\
connecting_line(w).draw(offset)
p = Point(0.5 * self.wing_length, -0.5 * self.inner_width)
Line(p, p.vmove(-w)).draw(offset).\
connecting_circular_arc(-self.corner_radius, -90.).draw(offset).\
connecting_line(-l).draw(offset).\
connecting_circular_arc(-self.corner_radius, -90.).draw(offset).\
connecting_line(-w).draw(offset)
def draw(self, offset):
"""
"""
radius = 0.5 * self.inner_length
a = self.outer_length - self.inner_length
b = 0.5 * (self.width - self.flat_width) - radius
theta = (-b + np.sqrt(b**2. + 2 * a * radius)) / radius
l = np.sqrt((a + 0.5 * radius * theta**2.)**2. +
(b + radius * theta)**2.)
p = Point(0., 0.5 * self.width - radius)
line = CircularArc(p, radius, 0., 180. - np.degrees(theta)).draw(offset).\
connecting_line(l).draw(offset)
p = line.end_point()
Line(p, p.vmove(-self.flat_width)).draw(offset)
p = Point(0., -0.5 * self.width + radius)
line = CircularArc(p, radius, 0., -180. + np.degrees(theta)).draw(offset).\
connecting_line(l).draw(offset)
p = p.hmove(0.5 * self.inner_length)
Line(p, p.vmove(self.width - 2. * radius)).draw(offset)
def test_draw(offset):
"""
"""
blueprint(f'EJ #1{offset}', 'A3', orientation='Portrait')
#body = Body()
#body.draw(offset)
x = np.array([
0., 15., 50., 125., 200., 230., 250., 280., 300., 325., 350., 370.,
385., 400., 405., 395., 384., 380.5, 379., 383., 393., 375., 354.,
340., 320., 305., 298.7, 315., 334.7, 325.8, 310., 266., 230., 200.,
120., 50., 10.
])
y = np.array([
0., 80., 131., 160., 141.5, 124.3, 113.3, 106.4, 107.4, 115., 123.,
125.7, 123., 110.3, 90., 68., 57., 50., 42., 28., 10., -13.2, -27.5,
-28.58, -30.5, -40.5, -60., -90, -108.7, -122.5, -127.4, -115.1,
-116.2, -136., -159.4, -131., -69.
])
s = ParametricSpline(x, y)
s.draw(offset)
#s.draw_points(offset)
#scale = 1.05
#s1 = ParametricSpline(x * scale, y * scale)
#s1.draw(offset - Point(8., 0.))
h1 = 52.
h2 = 25.
w1 = 75.
x, y = s.calculate_contour(offset, tmin=0., tmax=0.5)
mask = abs(y - offset.y) > h1
x = x[mask]
y = y[mask]
plt.plot(x, y, color='black')
plt.hlines(h1 + offset.y, x[0], x[-1])
x, y = s.calculate_contour(offset, tmin=0.5, tmax=1.)
mask = np.logical_and(abs(y - offset.y) > h1, x - offset.x < 317.)
x = x[mask]
y = y[mask]
plt.plot(x, y, color='black')
plt.hlines(-h1 + offset.y, x[0], x[-1])
p0 = Point(-50., 0.)
l = Line(p0, p0.move(500., 0.))
l.draw(offset)
p1 = Point(200., -200.)
l = Line(p1, p1.vmove(400.))
l.draw(offset)
def draw(self, offset):
"""Overloaded method.
"""
self._draw_contour(self.inner_length, self.inner_width, offset)
self._draw_contour(self.inner_length, self.outer_width, offset)
if self.outer_length != self.inner_length:
w = 0.5 * self.inner_width - 0.25 * self.inner_length
d = 6.
p1 = Point(-0.5 * self.inner_length, w)
p2 = Point(p1.x - self.outer_length + self.inner_length, d)
p3 = p2.vmove(-2. * d)
p4 = Point(-0.5 * self.inner_length, -w)
Line(p1, p2).draw(offset)
Line(p2, p3).draw(offset)
Line(p3, p4).draw(offset)
self.draw_magnets(offset)
self.draw_screw_holes(offset)