def __init__(self, light, **kwargs):
if (not isinstance(light, AmbientLight)
and not isinstance(light, Spotlight)):
raise Exception(
"Only AmbientLights and Spotlights can be switched off")
light.submobjects = light.submobjects[::-1]
LaggedStart.__init__(self, FadeOut, light, **kwargs)
light.submobjects = light.submobjects[::-1]
def construct(self):
number_line = NumberLine(x_min=-2, x_max=2)
text_1 = TextMobject("Theorem of") \
.next_to(number_line, DOWN)
text_2 = TextMobject("Beethoven") \
.next_to(number_line, DOWN)
dashed_line = DashedLine(
number_line.get_left(),
number_line.get_right(),
color=YELLOW,
).set_stroke(width=11)
self.add(number_line, text_1)
self.play(
LaggedStart(*[
ShowCreationThenDestruction(dashed_segment)
for dashed_segment in dashed_line
],
run_time=5),
AnimationGroup(Animation(Mobject(), run_time=2.1),
ReplacementTransform(text_1, text_2),
lag_ratio=1))
self.wait()
def __init__(self, focal_point, **kwargs):
digest_config(self, kwargs)
circles = VGroup()
for x in range(self.n_circles):
circle = Circle(
radius=self.big_radius,
stroke_color=BLACK,
stroke_width=0,
)
circle.move_to(focal_point)
circle.save_state()
circle.set_width(self.small_radius * 2)
circle.set_stroke(self.color, self.start_stroke_width)
circles.add(circle)
LaggedStart.__init__(self, ApplyMethod, circles, lambda c:
(c.restore, ), **kwargs)
def get_student_changes(self, *modes, **kwargs):
pairs = list(zip(self.get_students(), modes))
pairs = [(s, m) for s, m in pairs if m is not None]
start = VGroup(*[s for s, m in pairs])
target = VGroup(*[s.copy().change_mode(m) for s, m in pairs])
if "look_at_arg" in kwargs:
for pi in target:
pi.look_at(kwargs["look_at_arg"])
anims = [Transform(s, t) for s, t in zip(start, target)]
return LaggedStart(
*anims,
lag_ratio=kwargs.get("lag_ratio", 0.5),
run_time=1,
)
def construct(self):
morty = Mortimer()
morty.next_to(ORIGIN, DOWN)
patreon_logo = PatreonLogo()
patreon_logo.to_edge(UP)
patrons = list(map(TextMobject, self.specific_patrons))
num_groups = float(len(patrons)) / self.max_patron_group_size
proportion_range = np.linspace(0, 1, num_groups + 1)
indices = (len(patrons) * proportion_range).astype('int')
patron_groups = [
VGroup(*patrons[i:j]) for i, j in zip(indices, indices[1:])
]
for i, group in enumerate(patron_groups):
left_group = VGroup(*group[:len(group) / 2])
right_group = VGroup(*group[len(group) / 2:])
for subgroup, vect in (left_group, LEFT), (right_group, RIGHT):
subgroup.arrange_submobjects(DOWN, aligned_edge=LEFT)
subgroup.scale(self.patron_scale_val)
subgroup.to_edge(vect)
last_group = None
for i, group in enumerate(patron_groups):
anims = []
if last_group is not None:
self.play(FadeOut(last_group), morty.look, UP + LEFT)
else:
anims += [
DrawBorderThenFill(patreon_logo),
]
self.play(LaggedStart(
FadeIn,
group,
run_time=2,
), morty.change, "gracious", group.get_corner(UP + LEFT), *anims)
self.play(morty.look_at, group.get_corner(DOWN + LEFT))
self.play(morty.look_at, group.get_corner(UP + RIGHT))
self.play(morty.look_at, group.get_corner(DOWN + RIGHT))
self.play(Blink(morty))
last_group = group
def construct(self):
number_line = NumberLine(x_min=-2, x_max=2)
text = TextMobject("Text") \
.next_to(number_line, DOWN)
dashed_line = DashedLine(
number_line.get_left(),
number_line.get_right(),
color=YELLOW,
).set_stroke(width=11)
self.add(number_line)
self.wait(0.3)
self.play(
LaggedStart(*[
ShowCreationThenDestruction(dashed_segment)
for dashed_segment in dashed_line
],
run_time=5),
AnimationGroup(Animation(Mobject(), run_time=2.1),
Write(text),
lag_ratio=1))
self.wait()
def __init__(self, light, **kwargs):
if (not isinstance(light, AmbientLight)
and not isinstance(light, Spotlight)):
raise Exception(
"Only AmbientLights and Spotlights can be switched on")
LaggedStart.__init__(self, FadeIn, light, **kwargs)