def _define_one_symbol(self):
dot = Symbol(id="dot")
dot.add(Circle(center=(0, 0), r=self.dimens.stroke_width * 0.4, fill="black", stroke="none"))
self.dwg.defs.add(dot)
one = Symbol(id="one", class_="bit-1", stroke_width=1, stroke="black")
one.add(Circle(center=(0, 0), r=self.dimens.bit_radius, fill="none", stroke="none"))
empty_face_symbol = Symbol(id="empty_face")
light_face_symbol = Symbol(id="light_face")
dense_face_symbol = Symbol(id="dense_face")
points = ["{} {}".format(
self.dimens.bit_radius * math.sin(2 * math.pi * v / self.poly.num_vertices),
self.dimens.bit_radius * math.cos(2 * math.pi * v / self.poly.num_vertices)
) for v in range(0, 3)]
data = ['M', "0 0 L", *points, 'Z']
path = Path(data, fill="none", stroke_linejoin="bevel")
empty_face_symbol.add(path)
light_face_symbol.add(path)
dense_face_symbol.add(path)
x0 = 0
x1 = self.dimens.bit_radius * math.sin(2 * math.pi * 2 / self.poly.num_vertices)
y0 = self.dimens.bit_radius * math.cos(2 * math.pi * 2 / self.poly.num_vertices)
y1 = self.poly.outer_circle_radius * self.dimens.bit_radius
w = x1 - x0
h = y1 - y0
h_rect = y1
num_dense = 200
num_light = int(num_dense / 2)
points = np.apply_along_axis(
lambda p: np.array([p[0] * w, p[1] * h_rect + p[0] * y0]),
1,
np.clip(
i4_sobol_generate(2, num_dense) + np.random.rand(num_dense, 2) / h,
0, 1
))
for p in points[:num_light]:
light_face_symbol.add(Use(dot.get_iri(), (p[0], p[1])))
dense_face_symbol.add(Use(dot.get_iri(), (p[0], p[1])))
for p in points[num_light:]:
dense_face_symbol.add(Use(dot.get_iri(), (p[0], p[1])))
self.dwg.defs.add(empty_face_symbol)
self.dwg.defs.add(light_face_symbol)
self.dwg.defs.add(dense_face_symbol)
f1 = Use(empty_face_symbol.get_iri())
one.add(f1)
f2 = Use(dense_face_symbol.get_iri())
f2.rotate(120)
one.add(f2)
f3 = Use(light_face_symbol.get_iri())
f3.rotate(240)
one.add(f3)
self.dwg.defs.add(one)