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108 lines
3.3 KiB
Python
108 lines
3.3 KiB
Python
#!/usr/bin/env python2
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# -*- coding: utf-8 -*-
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from manimlib.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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CONFIG = {
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"animated_name": "Prime Meridian"
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}
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def construct(self):
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name = self.animated_name
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letter_mobs = TextMobject(name)
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nb_letters = len(letter_mobs)
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randy = PiCreature()
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randy.move_to(ORIGIN).set_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_mob, angle) in zip(letter_mobs, angles):
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letter_mob.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 + \
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RADIUS * np.sin(angles[2]) * UP
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times_n_label = VGroup(
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TexMobject("\\times"),
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Integer(1)
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)
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times_n_label.arrange(RIGHT)
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times_n_label.shift(FRAME_WIDTH * RIGHT / 4)
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times_n_label.to_edge(UP)
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self.play(
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LaggedStartMap(FadeIn, name_mob, run_time=3),
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ApplyMethod(randy.change, "pondering", pos2, run_time=1),
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FadeIn(times_n_label)
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)
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for n 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 - n * j * dtheta
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new_pos = RADIUS * np.cos(new_angle) * \
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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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new_n = Integer(n)
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new_n.move_to(times_n_label[1])
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self.play(
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AnimationGroup(*group, run_time=3),
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UpdateFromFunc(randy, lambda r: r.look_at(name_mob.submobjects[2])),
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FadeOut(times_n_label[1]),
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FadeIn(new_n)
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)
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times_n_label.submobjects[1] = new_n
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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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ReplacementTransform(name_mob, VGroup(*thank_you)),
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Transform(randy, new_randy)
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)
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self.play(Blink(randy))
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def __str__(self):
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return self.animated_name.replace(" ", "") + "Animation"
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names = []
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if __name__ == "__main__":
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for name in names:
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try:
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NameAnimationScene(
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frame_duration=PRODUCTION_QUALITY_FRAME_DURATION,
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camera_config=PRODUCTION_QUALITY_CAMERA_CONFIG,
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animated_name=name,
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write_to_movie=True,
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output_directory=os.path.join(
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VIDEO_DIR,
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"active_projects",
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"name_animations",
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),
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)
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except Exception as e:
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print("Could not animate %s: %s" % (name, e))
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