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102 lines
3.5 KiB
Python
102 lines
3.5 KiB
Python
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import numpy as np
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import itertools as it
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from helpers import *
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from mobject.tex_mobject import TexMobject, TextMobject, Brace
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from mobject import Mobject
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from mobject.image_mobject import \
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MobjectFromRegion, ImageMobject, MobjectFromPixelArray
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from topics.three_dimensions import Stars
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from animation import Animation
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from animation.transform import \
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Transform, CounterclockwiseTransform, ApplyPointwiseFunction,\
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FadeIn, FadeOut, GrowFromCenter, ApplyFunction, ApplyMethod, \
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ShimmerIn
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from animation.simple_animations import \
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ShowCreation, Homotopy, PhaseFlow, ApplyToCenters, DelayByOrder, \
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ShowPassingFlash
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from animation.playground import TurnInsideOut, Vibrate
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from topics.geometry import \
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Line, Circle, Square, Grid, Rectangle, Arrow, Dot, Point, \
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Arc, FilledRectangle
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from topics.characters import Randolph, Mathematician
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from topics.functions import ParametricFunction, FunctionGraph
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from topics.number_line import NumberPlane
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from region import Region, region_from_polygon_vertices
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from scene import Scene
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class DisectBrachistochroneWord(Scene):
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def construct(self):
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word = TextMobject(
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["Bra", "chis", "to", "chrone"]
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)
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original_word = word.copy()
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dots = []
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for part in word.split():
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if dots:
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part.next_to(dots[-1], buff = 0.06)
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dot = TexMobject("\\cdot")
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dot.next_to(part, buff = 0.06)
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dots.append(dot)
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dots = Mobject(*dots[:-1])
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dots.shift(0.1*DOWN)
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Mobject(word, dots).center()
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overbrace1 = Brace(Mobject(*word.split()[:-1]), UP)
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overbrace2 = Brace(word.split()[-1], UP)
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shortest = TextMobject("Shortest")
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shortest.next_to(overbrace1, UP)
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shortest.highlight(YELLOW)
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time = TextMobject("Time")
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time.next_to(overbrace2, UP)
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time.highlight(YELLOW)
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chrono_example = TextMobject("As in ``Chronological''")
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chrono_example.scale(0.5)
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chrono_example.to_edge(RIGHT)
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chrono_example.shift(2*UP)
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chrono_example.highlight(BLUE_D)
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chrono_arrow = Arrow(word.split()[-1], chrono_example)
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chrono_arrow.highlight(BLUE_D)
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pronunciation = TextMobject(["/br", "e", "kist","e","kr$\\bar{o}$n/"])
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pronunciation.split()[1].rotate_in_place(np.pi)
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pronunciation.split()[3].rotate_in_place(np.pi)
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pronunciation.scale(0.7)
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pronunciation.shift(DOWN)
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latin = TextMobject(list("Latin"))
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greek = TextMobject(list("Greek"))
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for mob in latin, greek:
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mob.to_edge(LEFT)
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question_mark = TextMobject("?").next_to(greek, buff = 0.1)
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stars = Stars().highlight(BLACK)
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stars.scale(0.5).shift(question_mark.get_center())
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self.play(Transform(original_word, word), ShowCreation(dots))
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self.play(ShimmerIn(pronunciation))
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self.dither()
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self.play(
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GrowFromCenter(overbrace1),
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GrowFromCenter(overbrace2)
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)
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self.dither()
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self.play(ShimmerIn(latin))
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self.play(FadeIn(question_mark))
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self.play(Transform(
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latin, greek,
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path_func = counterclockwise_path()
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))
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self.dither()
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self.play(Transform(question_mark, stars))
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self.remove(stars)
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self.dither()
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self.play(ShimmerIn(shortest))
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self.play(ShimmerIn(time))
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self.dither()
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self.play(
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ShowCreation(chrono_arrow),
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ShimmerIn(chrono_example)
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)
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self.dither()
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