def construct(self):
# Generate transformation animations of the twin dragon curve
anims = list()
fractal = VMobject()
fractal.shift(UP)
for order in range(-1, self.max_order+1):
new_fractal = TwinDragon(order = order)
new_fractal.shift(UP)
run_time = 0.5 if order >= 0 else 0
anims.append(
Transform(
fractal, new_fractal,
submobject_mode = "all_at_once",
run_time = run_time,
)
)
fractal = new_fractal
# Add the channel name
text = TextMobject("Solara570")
text.scale(2).to_edge(DOWN, buff = 1.2)
# Now sit back and watch
self.play(
Succession(*anims, rate_func = smooth),
Write(text, lag_factor = 2.5, rate_func = squish_rate_func(smooth, 0.1, 0.9)),
run_time = 4.5,
)
def construct(self):
square = Square(side_length=5, fill_color=YELLOW, fill_opacity=1)
label = TextMobject("Text at an angle")
label_bg = BackgroundRectangle(label, fill_opacity=1)
label_group = VGroup(label_bg, label)
label_group.rotate(TAU / 8)
label2 = TextMobject("Boxed text", color=BLACK)
label2_bg = SurroundingRectangle(label2,
color=BLUE,
fill_color=RED,
fill_opacity=.5)
label2_group = VGroup(label2, label2_bg)
label2_group.next_to(label_group, DOWN)
label3 = TextMobject("Rainbow")
label3.scale(2)
label3.set_color_by_gradient(RED, GREEN, BLUE)
label3.to_edge(DOWN)
self.add(square)
self.play(FadeIn(label_group))
self.play(FadeIn(label2_group))
self.play(FadeIn(label3))
self.wait(2)
def get_text(self,
text,
scale=1,
buff=0.1,
invert_dir=False,
invert_texto=False,
remove_rot=False,
**moreargs):
linea_referencia = Line(self[0][0].get_start(), self[0][-1].get_end())
texto = TextMobject(text, **moreargs)
ancho = texto.get_height() / 2
if invert_texto:
inv = PI
else:
inv = 0
if remove_rot:
texto.scale(scale).move_to(self)
else:
texto.rotate(
linea_referencia.get_angle()).scale(scale).move_to(self)
texto.rotate(inv)
if invert_dir:
inv = -1
else:
inv = 1
texto.shift(self.direccion * (buff + 1) * ancho * inv)
return texto
def initialize_texts(self):
geom_text = TextMobject("一个边长为$n$的正六边形", "和一些边长为1的菱形")
eqtri_text = TextMobject("它们都是由若干正三角形组成的")
three_types_text = TextMobject("因为朝向不同，菱形被分成三种")
try_tiling_text = TextMobject("现在用这些菱形", "镶嵌", "正六边形...")
remark = TextMobject("（无间隙且不重叠地覆盖）")
claim_text = TextMobject("最终的图案中", "每种菱形的数量一定都是$n^2$")
twist_text = TextMobject("改变菱形的摆放方式", "或者改变正六边形的大小", "这个结论依然成立")
how_to_prove_text = TextMobject("如何证明？", "")
for text in (geom_text, claim_text, twist_text):
text.arrange_submobjects(DOWN, aligned_edge=LEFT)
try_tiling_text[1].set_color(GREEN)
remark.scale(0.5)
remark.set_color(GREEN)
remark.next_to(try_tiling_text[1], DOWN, buff=0.1)
how_to_prove_text.set_color(YELLOW)
bg_texts = VGroup(
geom_text,
eqtri_text,
three_types_text,
VGroup(try_tiling_text, remark),
)
q_texts = VGroup(
claim_text,
twist_text,
)
for texts in (bg_texts, q_texts, how_to_prove_text):
texts.arrange_submobjects(DOWN, aligned_edge=LEFT, buff=1)
texts.to_corner(LEFT + UP)
self.bg_texts = bg_texts
self.q_texts = q_texts
self.how_to_prove_text = how_to_prove_text
def construct(self):
quote = TextMobject("Imagination is more important than knowledge")
quote.set_color(RED)
quote.to_edge(UP)
quote2 = TextMobject(
"A person who never made a mistake never tried anything new")
quote2.set_color(YELLOW)
author = TextMobject("- Albert Einstein")
author.scale(0.75)
corner = quote.get_corner(DOWN + RIGHT)
print("corner", corner)
author.next_to(corner, ORIGIN)
self.add(quote, author)
self.wait(2)
self.play(
Transform(quote, quote2),
ApplyMethod(author.move_to,
quote2.get_corner(DOWN + RIGHT) + DOWN + 2 * LEFT))
self.play(ApplyMethod(author.scale, 1.5))
author.match_color(quote2)
self.play(FadeOut(quote), FadeOut(author))
self.wait()
def add_label(self):
self.id_to_label = [
"0", "H", "He",
"Li", "Be", "B", "C", "N", "O", "F", "Ne",
"Na", "Mg", "Al", "Si", "P", "S", "Cl", "Ar",
"K", "Ca", "Sc", "Ti", "V", "Cr", "Mn", "Fe", "Co", "Ni", "Cu", "Zn", "Ga", "Ge", "As", "Se", "Br", "Kr",
"Rb", "Sr", "Y", "Zr", "Nb", "Mo", "Tc", "Ru", "Rh", "Pd", "Ag", "Cd", "In", "Sn", "Sb", "Te", "I", "Xe",
"Cs", "Ba",
"La", "Ce", "Pr", "Nd", "Pm", "Sm", "Eu", "Gd", "Tb", "Dy", "Ho", "Er", "Tm", "Yb", "Lu",
"Hf", "Ta", "W", "Re", "Os", "Ir", "Pt", "Au", "Hg", "Tl", "Pb", "Bi", "Po", "At", "Rn",
"Fr", "Ra",
"Ac", "Th", "Pa", "U", "Np", "Pu", "Am", "Cm", "Bk", "Cf", "Es", "Fm", "Md", "No", "Lr",
"Rf", "Db", "Sg", "Bh", "Hs", "Mt", "Ds", "Rg", "Cn", "Nh", "Fl", "Mc", "Lv", "Ts", "Og"
]
self.label_to_id = {}
for i, label in enumerate(self.id_to_label):
self.label_to_id[label] = i
labels = VGroup()
for i in range(0, 119):
label = TextMobject(self.id_to_label[i], color=BLACK, background_stroke_width=0)
label.scale(0.5).move_to(self[0][i][1].get_center()).set_shade_in_3d(z_index_as_group=True).shift(OUT * 1e-3)
labels.add(label)
labels[0].set_fill(opacity=0)
for i in [43, 61, *list(range(84, 119))]:
labels[i].set_color(RED)
self.add(labels)
return self
def setup(self):
MovingCameraScene.setup(self)
frame = self.camera_frame
frame.shift(DOWN)
self.logo = Logo()
name = TextMobject("3Blue1Brown")
name.scale(2.5)
name.next_to(self.logo, DOWN, buff=MED_LARGE_BUFF)
name.set_sheen(-0.2, DR)
self.channel_name = name
def setup(self):
super().setup()
frame = self.camera.frame
frame.shift(DOWN)
self.logo = Logo()
name = TextMobject("3Blue1Brown")
name.scale(2.5)
name.next_to(self.logo, DOWN, buff=MED_LARGE_BUFF)
name.set_gloss(0.2)
self.channel_name = name
def setup(self):
MovingCameraScene.setup(self)
frame = self.camera_frame
frame.shift(DOWN)
self.logo = Logo()
name = TextMobject("3Blue1Brown")
name.scale(2.5)
name.next_to(self.logo, DOWN, buff=MED_LARGE_BUFF)
name.set_sheen(-0.2, DR)
self.channel_name = name
def construct(self):
theorem_sc = TextMobject("可利颂镶嵌定理")
theorem_sc.scale(1.8)
theorem_eng = TextMobject("(Calisson Tiling Theorem)")
theorem_eng.set_width(theorem_sc.get_width())
theorem = VGroup(theorem_sc, theorem_eng)
theorem.arrange_submobjects(DOWN)
theorem.to_edge(RIGHT).shift(UP)
self.play(FadeIn(theorem), run_time=1)
author = TextMobject("@Solara570")
author.scale(1.5)
support = TextMobject("(Powered by @3Blue1Brown)")
support.set_width(author.get_width())
names = VGroup(author, support)
names.arrange_submobjects(DOWN)
names.to_corner(RIGHT + DOWN)
self.play(FadeIn(names), run_time=1)
self.wait(3)
def add_remark(self):
nl_text = TextMobject("数轴")
nl_arrow = Arrow(ORIGIN, UP).match_height(nl_text)
nl_remark = VGroup(nl_arrow, nl_text)
nl_remark.scale(0.8)
nl_remark.set_color(LIGHT_GREY)
nl_remark.arrange_submobjects(RIGHT, buff = 0.1)
nl_remark.next_to(self.axes.coords_to_point(0, 0), DOWN, buff = 0.1)
nl_remark.to_edge(LEFT, buff = 0.15)
frac_remark = TextMobject("圆内分数为圆心横坐标")
frac_remark.scale(0.6)
frac_remark.to_corner(DL, buff = 0.15)
farey_sum_remark = TexMobject(
"\\text{Farey Sum: }", "\\dfrac{a}{b} \\oplus \\dfrac{c}{d}", "=", "\\dfrac{a+c}{b+d}"
)
farey_sum_remark[1].set_color(YELLOW)
farey_sum_remark[-1].set_color(PINK)
farey_sum_remark.to_corner(DR, buff = 0.15)
self.add(nl_remark, frac_remark, farey_sum_remark)
def get_det_text(matrix, determinant=None, background_rect=False, initial_scale_factor=2):
parens = TexMobject("(", ")")
parens.scale(initial_scale_factor)
parens.stretch_to_fit_height(matrix.get_height())
l_paren, r_paren = parens.split()
l_paren.next_to(matrix, LEFT, buff=0.1)
r_paren.next_to(matrix, RIGHT, buff=0.1)
det = TextMobject("det")
det.scale(initial_scale_factor)
det.next_to(l_paren, LEFT, buff=0.1)
if background_rect:
det.add_background_rectangle()
det_text = VGroup(det, l_paren, r_paren)
if determinant is not None:
eq = TexMobject("=")
eq.next_to(r_paren, RIGHT, buff=0.1)
result = TexMobject(str(determinant))
result.next_to(eq, RIGHT, buff=0.2)
det_text.add(eq, result)
return det_text
def get_det_text(matrix, determinant=None, background_rect=False, initial_scale_factor=2):
parens = TexMobject("(", ")")
parens.scale(initial_scale_factor)
parens.stretch_to_fit_height(matrix.get_height())
l_paren, r_paren = parens.split()
l_paren.next_to(matrix, LEFT, buff=0.1)
r_paren.next_to(matrix, RIGHT, buff=0.1)
det = TextMobject("det")
det.scale(initial_scale_factor)
det.next_to(l_paren, LEFT, buff=0.1)
if background_rect:
det.add_background_rectangle()
det_text = VGroup(det, l_paren, r_paren)
if determinant is not None:
eq = TexMobject("=")
eq.next_to(r_paren, RIGHT, buff=0.1)
result = TexMobject(str(determinant))
result.next_to(eq, RIGHT, buff=0.2)
det_text.add(eq, result)
return det_text
def _main_title(self):
paper_name_a = TextMobject(
"Simulating human interactions in supermarkets to")
paper_name_b = TextMobject(
"measure the risk of COVID-19 contagion at scale")
author_list_a = TextMobject(
"Serge Plata\\quad Sumanas Sarma\\quad Melvin Lancelot")
author_list_b = TextMobject(
"Kristine Bagrova\\quad David Romano-Critchley")
arxiv = TextMobject("arXiv:2006.15213")
paper_name_a.shift(UP)
paper_name_b.next_to(paper_name_a, DOWN)
author_list_a.scale(0.8)
author_list_b.scale(0.8)
author_list_a.next_to(paper_name_b, DOWN + DOWN)
author_list_b.next_to(author_list_a, DOWN)
arxiv.scale(0.6)
arxiv.next_to(author_list_b, DOWN + DOWN)
self.play(FadeIn(paper_name_a), FadeIn(paper_name_b))
self.wait()
self.play(FadeIn(author_list_a), FadeIn(author_list_b))
self.play(FadeIn(arxiv))
self.wait(4)
self.play(FadeOut(paper_name_a), FadeOut(paper_name_b),
FadeOut(author_list_a), FadeOut(author_list_b),
ApplyMethod(arxiv.move_to, BOTTOM + (UP * 0.5)))
def construct(self):
words = TextMobject(
"3",
"Blue",
"1",
"Brown",
)
words.scale(2)
words[::2].scale(1.2)
buff = 0.2
words.arrange(
DOWN,
buff=buff,
aligned_edge=LEFT,
)
words[0].match_x(words[1][0])
words[2].match_x(words[3][0])
self.add(words)
logo = Logo()
logo.next_to(words, LEFT)
self.add(logo)
VGroup(logo, words).center()
def scroll_through_patrons(self):
logo_box = Square(side_length=2.5)
logo_box.to_corner(DOWN + LEFT, buff=MED_LARGE_BUFF)
total_width = FRAME_X_RADIUS - logo_box.get_right()[0]
black_rect = Rectangle(
fill_color=BLACK,
fill_opacity=1,
stroke_width=3,
stroke_color=BLACK,
width=FRAME_WIDTH,
height=0.6 * FRAME_HEIGHT,
)
black_rect.to_edge(UP, buff=0)
line = DashedLine(FRAME_X_RADIUS * LEFT, FRAME_X_RADIUS * RIGHT)
line.move_to(ORIGIN)
thanks = TextMobject(self.thanks_words)
thanks.scale(0.9)
thanks.next_to(black_rect.get_bottom(), UP, SMALL_BUFF)
thanks.set_color(YELLOW)
underline = Line(LEFT, RIGHT)
underline.match_width(thanks)
underline.scale(1.1)
underline.next_to(thanks, DOWN, SMALL_BUFF)
thanks.add(underline)
changed_patron_names = map(
self.modify_patron_name,
self.specific_patrons,
)
patrons = VGroup(*map(
TextMobject,
changed_patron_names,
))
patrons.scale(self.patron_scale_val)
for patron in patrons:
if patron.get_width() > self.max_patron_width:
patron.set_width(self.max_patron_width)
columns = VGroup(*[
VGroup(*patrons[i::self.n_patron_columns])
for i in range(self.n_patron_columns)
])
for column in columns:
for n, name in enumerate(column):
name.shift(n * self.name_y_spacing * DOWN)
columns.arrange(
RIGHT, buff=LARGE_BUFF,
aligned_edge=UP,
)
max_width = FRAME_WIDTH - 1
if columns.get_width() > max_width:
columns.set_width(max_width)
underline.match_width(columns)
# thanks.to_edge(RIGHT, buff=MED_SMALL_BUFF)
columns.next_to(underline, DOWN, buff=2)
columns.generate_target()
columns.target.to_edge(DOWN, buff=2)
vect = columns.target.get_center() - columns.get_center()
distance = get_norm(vect)
wait_time = 20
always_shift(
columns,
direction=normalize(vect),
rate=(distance / wait_time)
)
self.add(columns, black_rect, line, thanks)
self.wait(wait_time)
def construct(self):
# Add title
title = self.title = TextMobject("Clicky Stuffs")
title.scale(1.5)
title.to_edge(UP, buff=MED_SMALL_BUFF)
pi_creatures = VGroup(Randolph(), Mortimer())
for pi, vect in zip(pi_creatures, [LEFT, RIGHT]):
pi.set_height(title.get_height())
pi.change_mode("thinking")
pi.look(DOWN)
pi.next_to(title, vect, buff=MED_LARGE_BUFF)
self.add(title, pi_creatures)
# Set the top of the screen
logo_box = Square(side_length=2.5)
logo_box.to_corner(DOWN + LEFT, buff=MED_LARGE_BUFF)
black_rect = Rectangle(
fill_color=BLACK,
fill_opacity=1,
stroke_width=3,
stroke_color=BLACK,
width=FRAME_WIDTH,
height=0.6 * FRAME_HEIGHT,
)
black_rect.to_edge(UP, buff=0)
line = DashedLine(FRAME_X_RADIUS * LEFT, FRAME_X_RADIUS * RIGHT)
line.move_to(ORIGIN)
# Add thanks
thanks = TextMobject(self.thanks_words)
thanks.scale(0.9)
thanks.next_to(black_rect.get_bottom(), UP, SMALL_BUFF)
thanks.set_color(YELLOW)
underline = Line(LEFT, RIGHT)
underline.match_width(thanks)
underline.scale(1.1)
underline.next_to(thanks, DOWN, SMALL_BUFF)
thanks.add(underline)
# Build name list
file_name = os.path.join(get_directories()["data"], "patrons.txt")
with open(file_name, "r") as fp:
names = [
self.modify_patron_name(name.strip())
for name in fp.readlines()
]
if self.randomize_order:
random.shuffle(names)
else:
names.sort()
name_labels = VGroup(*map(TextMobject, names))
name_labels.scale(self.patron_scale_val)
for label in name_labels:
if label.get_width() > self.max_patron_width:
label.set_width(self.max_patron_width)
columns = VGroup(*[
VGroup(*name_labels[i::self.n_patron_columns])
for i in range(self.n_patron_columns)
])
column_x_spacing = 0.5 + max([c.get_width() for c in columns])
for i, column in enumerate(columns):
for n, name in enumerate(column):
name.shift(n * self.name_y_spacing * DOWN)
name.align_to(ORIGIN, LEFT)
column.move_to(i * column_x_spacing * RIGHT, UL)
columns.center()
max_width = FRAME_WIDTH - 1
if columns.get_width() > max_width:
columns.set_width(max_width)
underline.match_width(columns)
columns.next_to(underline, DOWN, buff=3)
# Set movement
columns.generate_target()
distance = columns.get_height() + 2
wait_time = self.scroll_time
frame = self.camera.frame
frame_shift = ApplyMethod(
frame.shift,
distance * DOWN,
run_time=wait_time,
rate_func=linear,
)
blink_anims = []
blank_mob = Mobject()
for x in range(wait_time):
if random.random() < 0.25:
blink_anims.append(Blink(random.choice(pi_creatures)))
else:
blink_anims.append(Animation(blank_mob))
blinks = Succession(*blink_anims)
static_group = VGroup(black_rect, line, thanks, pi_creatures, title)
static_group.fix_in_frame()
self.add(columns, static_group)
self.play(frame_shift, blinks)
def construct(self):
self._main_title()
text_one = TextMobject("Given a list of items sold")
text_two: TextMobject = TextMobject(
"Randomly choose items matching this distribution")
text_two.next_to(text_one, DOWN)
number_line = NumberLine(
numbers_with_elongated_ticks=[0, 1],
include_numbers=True,
x_min=0,
x_max=1,
unit_size=10,
tick_frequency=0.1,
# decimal_number_config={"num_decimal_places": 1},
numbers_to_show=[0, 1])
number_line.next_to(text_two, UP)
self.play(ShowCreation(text_one))
self.wait()
self.play(ShowCreation(text_two))
self.wait(4)
apples_text = TextMobject("Apples:")
apples_text.set_color(self._apple_colour)
apples_text.to_edge(UP)
apples_text.align_to(text_two, LEFT)
apple_count_text = TextMobject(f"{self._apple_count}")
apple_count_text.set_color(self._apple_colour)
apple_count_text.next_to(apples_text, RIGHT)
banana_text = TextMobject("Bananas:")
banana_text.set_color(self._banana_colour)
banana_text.next_to(apples_text, DOWN)
banana_text.align_to(apples_text, LEFT)
banana_count_text = TextMobject(f"{self._banana_count}")
banana_count_text.set_color(self._banana_colour)
banana_count_text.next_to(banana_text, RIGHT)
self.play(Transform(text_one, apples_text))
self.play(ShowCreation(apple_count_text))
self.play(ShowCreation(banana_text), ShowCreation(banana_count_text))
banana_bar = Rectangle(
height=0.4,
width=number_line.point_to_number(self._banana_fraction * 10) *
(number_line.number_to_point(1)[0]),
color=self._banana_colour,
fill_color=self._banana_colour,
fill_opacity=0.75)
banana_bar.next_to(banana_count_text, RIGHT + RIGHT)
apple_bar = Rectangle(
height=0.4,
width=number_line.point_to_number(self._apple_fraction * 10) *
(number_line.number_to_point(1)[0]),
color=self._apple_colour,
fill_color=self._apple_colour,
fill_opacity=0.75)
apple_bar.next_to(banana_bar, UP)
apple_bar.align_to(banana_bar, LEFT)
self.play(FadeIn(apple_bar), FadeIn(banana_bar))
self.wait(1.5)
apple_fraction_text = TextMobject("$\\frac{" + str(self._apple_count) +
"}{" + str(self._apple_count +
self._banana_count) +
"} = " + str(self._apple_fraction) +
"$")
apple_fraction_text.next_to(apple_bar, RIGHT)
banana_fraction_text = TextMobject("$\\frac{" +
str(self._banana_count) + "}{" +
str(self._apple_count +
self._banana_count) + "} = " +
str(self._banana_fraction) + "$")
banana_fraction_text.next_to(banana_bar, RIGHT)
self.play(ShowCreation(apple_fraction_text))
self.play(ShowCreation(banana_fraction_text))
self.wait(2)
number_line_map_text = TextMobject(
"Map these counts to values between 0 and 1")
number_line_map_text.next_to(text_two, UP)
self.play(ShowCreation(number_line_map_text))
self.wait(3)
self.play(Transform(number_line_map_text, number_line))
apple_num_ln_bar = Rectangle(
height=0.4,
# width=1 - self._apple_fraction * (number_line.number_to_point(1)[0]),
width=number_line.point_to_number(self._apple_fraction * 10) *
(number_line.number_to_point(1)[0]),
color=self._apple_colour,
fill_color=self._apple_colour,
fill_opacity=0.25)
apple_num_ln_bar.move_to(apple_bar, LEFT)
self.add(apple_num_ln_bar)
self.wait(2)
self.play(
ApplyMethod(apple_num_ln_bar.move_to,
number_line.number_to_point(0), LEFT))
banana_num_ln_bar = Rectangle(
height=0.4,
width=number_line.point_to_number(self._banana_fraction * 10) *
(number_line.number_to_point(1)[0]),
color=self._banana_colour,
fill_color=self._banana_colour,
fill_opacity=0.25)
banana_num_ln_bar.move_to(banana_bar, LEFT)
self.add(banana_num_ln_bar)
self.wait(2)
self.play(
ApplyMethod(banana_num_ln_bar.move_to,
number_line.number_to_point(1), RIGHT))
text_scale: float = 0.75
get_rnd_full = TextMobject(
"Get a random number $n$ between 0 and 1 (uniform distribution)")
get_apple_text = TextMobject(
f"Apple\\quad if $n <= {self._apple_fraction}$",
tex_to_color_map={"Apple": self._apple_colour})
get_banana_text = TextMobject(
f"Banana\\quad if $n > {self._apple_fraction}$",
tex_to_color_map={"Banana": self._banana_colour})
get_rnd_full.scale(text_scale)
get_rnd_full.next_to(text_two, DOWN)
get_banana_text.next_to(get_apple_text, DOWN)
step_group = VGroup(get_apple_text, get_banana_text)
brace = Brace(step_group, LEFT)
step_text_d = brace.get_text("$n \\sim U(0, 1)$")
step_text_d.scale(text_scale)
step_text_d.next_to(get_rnd_full, DOWN + DOWN)
step_text_d.shift(LEFT)
brace.next_to(step_text_d, RIGHT)
step_group.scale(text_scale)
step_group.next_to(step_text_d, RIGHT + RIGHT + RIGHT)
self.wait(2)
self.play(ShowCreation(get_rnd_full))
self.wait(2)
self.play(ShowCreation(step_text_d))
self.wait(2)
self.play(GrowFromCenter(brace))
self.wait()
self.play(ShowCreation(get_apple_text))
self.wait(2)
self.play(ShowCreation(get_banana_text))
# random_nos_to_draw = 10
# main_arrow = Arrow(ORIGIN, DOWN * 1.3)
# helper_arrow = Arrow(ORIGIN, LEFT * 1.3)
#
# for i in range(random_nos_to_draw):
# num: float = np.random.random_sample(1)
# point = number_line.number_to_point(num)
# arrow_colour = self._apple_colour if num <= self._apple_fraction else self._banana_colour
# arrow_recipient = get_apple_text if num <= self._apple_fraction else get_banana_text
#
# main_arrow.set_color(arrow_colour)
#
# if i == 0:
# main_arrow.next_to(point, UP)
# helper_arrow.next_to(arrow_recipient, RIGHT)
# self.play(GrowArrow(main_arrow), GrowArrow(helper_arrow))
# else:
# self.play(ApplyMethod(helper_arrow.next_to, arrow_recipient, RIGHT),
# ApplyMethod(main_arrow.next_to, point, UP))
# self.wait()
#
# self.play(FadeOut(main_arrow), FadeOut(helper_arrow))
self.wait()
def scroll_through_patrons(self):
logo_box = Square(side_length=2.5)
logo_box.to_corner(DOWN + LEFT, buff=MED_LARGE_BUFF)
total_width = FRAME_X_RADIUS - logo_box.get_right()[0]
black_rect = Rectangle(
fill_color=BLACK,
fill_opacity=1,
stroke_width=3,
stroke_color=BLACK,
width=FRAME_WIDTH,
height=0.6 * FRAME_HEIGHT,
)
black_rect.to_edge(UP, buff=0)
line = DashedLine(FRAME_X_RADIUS * LEFT, FRAME_X_RADIUS * RIGHT)
line.move_to(ORIGIN)
thanks = TextMobject(self.thanks_words)
thanks.scale(0.9)
thanks.next_to(black_rect.get_bottom(), UP, SMALL_BUFF)
thanks.set_color(YELLOW)
underline = Line(LEFT, RIGHT)
underline.match_width(thanks)
underline.scale(1.1)
underline.next_to(thanks, DOWN, SMALL_BUFF)
thanks.add(underline)
changed_patron_names = map(
self.modify_patron_name,
self.specific_patrons,
)
patrons = VGroup(*map(
TextMobject,
changed_patron_names,
))
patrons.scale(self.patron_scale_val)
for patron in patrons:
if patron.get_width() > self.max_patron_width:
patron.set_width(self.max_patron_width)
columns = VGroup(*[
VGroup(*patrons[i::self.n_patron_columns])
for i in range(self.n_patron_columns)
])
for column in columns:
for n, name in enumerate(column):
name.shift(n * self.name_y_spacing * DOWN)
columns.arrange(
RIGHT, buff=LARGE_BUFF,
aligned_edge=UP,
)
if columns.get_width() > self.max_patron_width:
columns.set_width(total_width - 1)
thanks.to_edge(RIGHT, buff=MED_SMALL_BUFF)
columns.next_to(underline, DOWN, buff=2)
columns.generate_target()
columns.target.to_edge(DOWN, buff=2)
vect = columns.target.get_center() - columns.get_center()
distance = get_norm(vect)
wait_time = 20
always_shift(
columns,
direction=normalize(vect),
rate=(distance / wait_time)
)
self.add(columns, black_rect, line, thanks)
self.wait(wait_time)
