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End message animations
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Grant Sanderson
parent
552e051d98
commit
5f8737cd46
1 changed files with 221 additions and 16 deletions
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@ -32,6 +32,7 @@ from camera import *
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from mobject.svg_mobject import *
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from mobject.tex_mobject import *
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from topics.graph_scene import *
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from topics.common_scenes import *
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from old_projects.uncertainty import Flash
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from active_projects.WindingNumber import *
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@ -2300,14 +2301,51 @@ class BreakDownLoopWithNonzeroWinding(TransitionFromPathsToBoundaries):
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squares, joint_rect = self.get_squares_and_joint_rect()
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left_square, right_square = squares
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VGroup(squares, joint_rect).shift(SMALL_BUFF*UP)
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VGroup(squares, joint_rect).shift(MED_LARGE_BUFF*DOWN)
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dot = self.get_dot_and_add_continual_animations()
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for rect in (left_square, "x"), (right_square, "y"), (joint_rect, "3"):
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pass
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for rect, tex in (left_square, "x"), (right_square, "y"), (joint_rect, "3"):
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rect.label = TextMobject("Winding = ", "$%s$"%tex)
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rect.label.move_to(rect)
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sum_label = TexMobject("x", "+", "y", "=", "3")
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x, plus, y, equals, three = sum_label
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sum_label.next_to(joint_rect, UP)
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both_cannot_be_zero = TextMobject("These cannot both be 0")
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both_cannot_be_zero.move_to(plus)
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both_cannot_be_zero.to_edge(UP)
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arrows = VGroup(*[
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Arrow(both_cannot_be_zero.get_bottom(), var.get_top(), buff = SMALL_BUFF)
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for var in x, y
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])
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self.position_dot(joint_rect.points[0])
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self.add(joint_rect)
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self.play(
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MoveAlongPath(dot, joint_rect, rate_func = bezier([0, 0, 1, 1])),
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Write(joint_rect.label, rate_func = squish_rate_func(smooth, 0.7, 1)),
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run_time = 4
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)
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self.wait()
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self.play(
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ReplacementTransform(joint_rect.label, left_square.label),
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ReplacementTransform(joint_rect.label.copy(), right_square.label),
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ReplacementTransform(joint_rect.label[1].copy(), three),
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FadeIn(left_square),
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FadeIn(right_square),
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)
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self.play(
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ReplacementTransform(left_square.label[1].copy(), x),
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ReplacementTransform(right_square.label[1].copy(), y),
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FadeIn(plus),
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FadeIn(equals),
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)
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self.play(
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FadeIn(both_cannot_be_zero),
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*map(GrowArrow, arrows)
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)
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self.wait()
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class BackToEquationSolving(AltTeacherStudentsScene):
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def construct(self):
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@ -2608,12 +2646,168 @@ class EndingCredits(Scene):
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"Grant Sanderson"
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)
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text[0].shift(MED_SMALL_BUFF*UP)
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self.play(LaggedStart(FadeIn, text))
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text.to_edge(UP)
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pi = PiCreature(color = YELLOW_E, height = 2)
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pi.to_edge(DOWN)
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pi.change_mode("happy")
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self.add(pi)
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self.play(LaggedStart(FadeIn, text), pi.look_at, text)
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self.play(pi.change, "wave_1", text)
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self.play(Blink(pi))
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self.play(pi.change, "happy")
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self.wait()
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class MentionQAndA(TeacherStudentsScene):
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class MentionQAndA(Scene):
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def construct(self):
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pass
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title = TextMobject("Q\\&A with ", "Ben", "and", "Sridhar\\\\", "at", "Patreon")
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title.highlight_by_tex_to_color_map({
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"Ben" : MAROON,
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"Sridhar" : YELLOW,
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})
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patreon_logo = VGroup(*PatreonLogo().family_members_with_points())
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patreon_logo.sort_submobjects()
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patreon_logo.replace(title.get_parts_by_tex("Patreon"))
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patreon_logo.scale(1.3, about_edge = LEFT)
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patreon_logo.shift(0.5*SMALL_BUFF*DOWN)
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title.submobjects[-1] = patreon_logo
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title.to_edge(UP)
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self.add(title)
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questions = VGroup(*map(TextMobject, [
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"If you think of the current videos as short stories, \\\\ what is the novel that you want to write?",
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"How did you get into mathematics?",
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"What motivated you to join 3b1b?",
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"$\\vdots$",
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]))
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questions.arrange_submobjects(DOWN, buff = 0.75)
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questions.next_to(title, DOWN, LARGE_BUFF)
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self.play(LaggedStart(FadeIn, questions, run_time = 3))
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self.wait(2)
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self.play(FadeOut(questions))
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self.wait()
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class TickingClock(Scene):
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CONFIG = {
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"run_time" : 90,
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}
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def construct(self):
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clock = Clock()
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clock.scale_to_fit_height(2*SPACE_HEIGHT - 1)
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clock.to_edge(LEFT)
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lines = [clock.hour_hand, clock.minute_hand]
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def update_line(line):
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rev = line.get_angle()/TAU
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line.highlight(rev_to_color(rev))
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for line in lines:
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self.add(ContinualUpdateFromFunc(line, update_line))
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run_time = self.run_time
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self.play(ClockPassesTime(
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clock,
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run_time = run_time,
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hours_passed = 0.1*run_time
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))
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class InfiniteListOfTopics(Scene):
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def construct(self):
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rect = Rectangle(width = 5, height = 7)
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rect.to_edge(RIGHT)
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title = TextMobject("Infinite list \\\\ of topics")
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title.next_to(rect.get_top(), DOWN)
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lines = VGroup(*[
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TextMobject(words).scale(0.5)
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for words in [
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"Winding number",
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"Laplace transform",
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"Wallis product",
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"Quantum information",
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"Elliptic curve cryptography",
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"Strange attractors",
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"Convolutional neural networks",
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"Fixed points",
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]
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] + [TexMobject("\\vdots")])
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lines.arrange_submobjects(DOWN, buff = MED_SMALL_BUFF, aligned_edge = LEFT)
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lines.next_to(title, DOWN, MED_LARGE_BUFF)
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lines[-1].next_to(lines[-2], DOWN)
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self.add(rect, title)
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self.play(LaggedStart(FadeIn, lines, run_time = 5))
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self.wait()
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class ManyIterations(Scene):
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def construct(self):
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words = VGroup(*[
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TextMobject(word, alignment = "")
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for word in [
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"Winding numbers, v1",
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"Winding numbers, v2 \\\\ (center on domain coloring)",
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"Winding numbers, v3 \\\\ (clarify visuals of 2d functions)",
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"Winding numbers, v4 \\\\ (postpone topology examples for part 2)",
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"Winding numbers, v5 \\\\ (start down wrong path)",
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]
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])
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words.arrange_submobjects(DOWN, buff = MED_LARGE_BUFF, aligned_edge = LEFT)
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words.scale(0.75)
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words.to_edge(RIGHT)
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self.add(words[0])
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for last_word, word in zip(words, words[1:]):
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cross = Cross(last_word)
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self.play(ShowCreation(cross))
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self.play(FadeIn(word))
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self.wait()
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class MentionFree(PiCreatureScene):
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CONFIG = {
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"default_pi_creature_kwargs" : {
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"flip_at_start" : False,
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},
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"default_pi_creature_start_corner" : DOWN,
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}
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def construct(self):
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morty = self.pi_creature
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morty.shift(RIGHT)
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items = VGroup(
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TextMobject("Movie:", "$>\\$10.00$"),
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TextMobject("College course:", "$>\\$1{,}000.00$"),
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TextMobject("YouTube video:", "$=\\$0.00$"),
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)
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# items.arrange_submobjects(DOWN, buff = MED_LARGE_BUFF)
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items.next_to(morty, UP, LARGE_BUFF)
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right_x = morty.get_right()[0]
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for item in items:
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item[1].highlight(GREEN)
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item.shift((right_x - item[0].get_right()[0])*RIGHT)
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self.play(
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morty.change, "raise_right_hand",
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FadeInFromDown(items[0])
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)
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self.wait()
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self.play(
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FadeInFromDown(items[1]),
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items[0].shift, UP,
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)
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self.wait()
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self.play(
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items[:2].shift, UP,
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FadeInFromDown(items[2]),
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morty.change, "surprised"
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)
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self.wait(4)
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self.play(
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morty.change, "raise_left_hand", VectorizedPoint(3*LEFT)
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)
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self.wait(4)
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self.play(morty.change, "gracious", OUT)
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self.wait(4)
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class PatreonScroll(Scene):
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CONFIG = {
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@ -2621,7 +2815,6 @@ class PatreonScroll(Scene):
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"Juan Benet",
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"Chloe Zhou",
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"Ross Garber",
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"Randall Hunt",
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"Desmos",
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"Burt Humburg",
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"CrypticSwarm",
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@ -2649,14 +2842,13 @@ class PatreonScroll(Scene):
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"Joseph John Cox",
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"Luc Ritchie",
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"Steven Tomlinson",
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"Mèngzi Yì",
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"Shìmín Ku$\\overline{\\text{a}}$ng",
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"Jameel Syed",
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"Bong Choung",
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"Ignacio Freiberg",
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"Zhilong Yang",
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"Karl Niu",
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"Dan Esposito (Guardion)",
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"Michael Kunze",
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"Giovanni Filippi",
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"Eric Younge",
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"Prasant Jagannath",
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@ -2673,8 +2865,7 @@ class PatreonScroll(Scene):
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"David B",
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"Waleed Hamied",
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"George Chiesa",
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"Supershabam",
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"Samantha D. Suplee",
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"supershabam",
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"Delton Ding",
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"Thomas Tarler",
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"Jonathan Eppele",
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@ -2688,7 +2879,7 @@ class PatreonScroll(Scene):
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"Michael Gardner",
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"Mads Elvheim",
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"Awoo",
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"Dr David G. Stork",
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"Dr. David G. Stork",
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"Ted Suzman",
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"Linh Tran",
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"Andrew Busey",
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@ -2708,12 +2899,12 @@ class PatreonScroll(Scene):
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"Mustafa Mahdi",
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"Mathew Bramson",
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"Jerry Ling",
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"Shìmín Ku$\\overline{\\text{a}}$ng",
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"Mèngzi Yì",
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"Rish Kundalia",
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"Achille Brighton",
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"Ripta Pasay",
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],
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"random_seed" : 3,
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"random_seed" : 1,
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}
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def construct(self):
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patreon_logo = PatreonLogo()
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@ -2743,8 +2934,22 @@ class PatreonScroll(Scene):
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self.add(scroll, opacity_update)
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self.wait(55)
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class EndScreen(PatreonEndScreen, PiCreatureScene):
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CONFIG = {
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"run_time" : 0,
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}
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def construct(self):
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self.remove(self.pi_creature)
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PatreonEndScreen.construct(self)
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randy, morty = self.pi_creatures
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randy.change("plain")
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morty.change("plain")
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for mode in "thinking", "confused", "pondering", "hooray":
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self.play(randy.change, mode)
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self.wait()
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self.play(morty.change, mode)
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self.wait(2)
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