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76 lines
2.1 KiB
Python
76 lines
2.1 KiB
Python
from big_ol_pile_of_manim_imports import *
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NAME_WITH_SPACES = "Prime Meridian"
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DIAMETER = 3.0
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RADIUS = DIAMETER / 2
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LETTER_SCALE = 1
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class NameAnimationScene(Scene):
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def construct(self):
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name = ''.join(NAME_WITH_SPACES.split(' '))
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letters = list(name)
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nb_letters = len(letters)
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randy = PiCreature()
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randy.move_to(ORIGIN).scale_to_fit_height(0.5 * DIAMETER)
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randy.set_color(BLUE_E)
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randy.look_at(UP + RIGHT)
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self.add(randy)
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dtheta = TAU/nb_letters
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angles = np.arange(TAU/4,-3 * TAU / 4,-dtheta)
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name_mob = VGroup()
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for (letter, angle) in zip(letters, angles):
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letter_mob = TextMobject(letter).scale(LETTER_SCALE)
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pos = RADIUS * np.cos(angle) * RIGHT + RADIUS * np.sin(angle) * UP
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letter_mob.move_to(pos)
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name_mob.add(letter_mob)
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pos2 = RADIUS * np.cos(angles[2]) * RIGHT + RADIUS * np.sin(angles[2]) * UP
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self.play(
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LaggedStart(Write, name_mob, run_time = 3),
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ApplyMethod(randy.look_at, pos2, run_time = 3)
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)
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for i in range(2,nb_letters + 2):
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group = []
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for (j,letter_mob) in enumerate(name_mob.submobjects):
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new_angle = TAU / 4 - i * j * dtheta
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new_pos = RADIUS * np.cos(new_angle) * RIGHT + RADIUS * np.sin(new_angle) * UP
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letter_mob.target = letter_mob.copy().move_to(new_pos)
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anim = MoveToTarget(letter_mob, path_arc = - j * dtheta)
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group.append(anim)
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self.play(
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AnimationGroup(*group, run_time = 3),
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ApplyMethod(randy.look_at,name_mob.submobjects[2], run_time = 3)
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)
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self.wait(0.5)
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thank_you = TextMobject("Thank You!").next_to(randy, DOWN)
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new_randy = randy.copy()
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new_randy.change("hooray")
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new_randy.set_color(BLUE_E)
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new_randy.look_at(ORIGIN)
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self.play(
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Transform(name_mob, thank_you),
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Transform(randy, new_randy)
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)
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