mirror of
https://github.com/3b1b/manim.git
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174 lines
4.6 KiB
Python
174 lines
4.6 KiB
Python
from mobject.tex_mobject import TexMobject
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from mobject import Mobject
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from mobject.image_mobject import ImageMobject
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from mobject.vectorized_mobject import VMobject
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from animation.animation import Animation
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from animation.transform import *
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from animation.simple_animations import *
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from animation.compositions import *
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from topics.geometry import *
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from topics.characters import *
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from topics.functions import *
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from topics.number_line import *
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from topics.numerals import *
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from scene import Scene
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from camera import Camera
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from mobject.svg_mobject import *
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from mobject.tex_mobject import *
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from mobject.vectorized_mobject import *
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from topics.matrix import *
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from topics.vector_space_scene import *
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from eola.chapter9 import Jennifer, You
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class Chapter0(LinearTransformationScene):
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CONFIG = {
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"include_background_plane" : False,
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"t_matrix" : [[3, 1], [2, -1]]
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}
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def construct(self):
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self.setup()
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self.plane.fade()
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for mob in self.get_mobjects():
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mob.set_stroke(width = 6)
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self.apply_transposed_matrix(self.t_matrix, run_time = 0)
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class Chapter1(Scene):
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def construct(self):
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arrow = Vector(2*UP+RIGHT)
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vs = TextMobject("vs.")
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array = Matrix([1, 2])
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array.highlight(TEAL)
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everyone = VMobject(arrow, vs, array)
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everyone.arrange_submobjects(RIGHT, buff = 0.5)
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everyone.scale_to_fit_height(4)
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self.add(everyone)
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class Chapter2(LinearTransformationScene):
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def construct(self):
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self.lock_in_faded_grid()
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vectors = VMobject(*[
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Vector([x, y])
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for x in np.arange(-int(SPACE_WIDTH)+0.5, int(SPACE_WIDTH)+0.5)
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for y in np.arange(-int(SPACE_HEIGHT)+0.5, int(SPACE_HEIGHT)+0.5)
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])
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vectors.submobject_gradient_highlight(PINK, BLUE_E)
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words = TextMobject("Span")
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words.scale(3)
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words.to_edge(UP)
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words.add_background_rectangle()
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self.add(vectors, words)
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class Chapter3(Chapter0):
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CONFIG = {
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"t_matrix" : [[3, 0], [2, -1]]
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}
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class Chapter4p1(Chapter0):
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CONFIG = {
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"t_matrix" : [[1, 0], [1, 1]]
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}
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class Chapter4p2(Chapter0):
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CONFIG = {
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"t_matrix" : [[1, 2], [-1, 1]]
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}
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class Chapter5(LinearTransformationScene):
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def construct(self):
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self.plane.fade()
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self.add_unit_square()
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self.plane.set_stroke(width = 6)
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VMobject(self.i_hat, self.j_hat).set_stroke(width = 10)
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self.square.set_fill(YELLOW, opacity = 0.7)
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self.square.set_stroke(width = 0)
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self.apply_transposed_matrix(self.t_matrix, run_time = 0)
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class Chapter9(Scene):
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def construct(self):
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you = You()
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jenny = Jennifer()
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you.change_mode("erm")
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jenny.change_mode("speaking")
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you.shift(LEFT)
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jenny.shift(2*RIGHT)
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vector = Vector([3, 2])
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vector.center().shift(2*DOWN)
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vector.set_stroke(width = 8)
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vector.tip.scale_in_place(2)
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you.coords = Matrix([3, 2])
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jenny.coords = Matrix(["5/3", "1/3"])
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for pi in jenny, you:
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pi.bubble = pi.get_bubble(SpeechBubble, width = 3, height = 3)
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if pi is you:
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pi.bubble.shift(MED_SMALL_BUFF*RIGHT)
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else:
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pi.coords.scale(0.8)
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pi.bubble.shift(MED_SMALL_BUFF*LEFT)
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pi.bubble.add_content(pi.coords)
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pi.add(pi.bubble, pi.coords)
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pi.look_at(vector)
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self.add(you, jenny, vector)
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class Chapter10(LinearTransformationScene):
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CONFIG = {
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"foreground_plane_kwargs" : {
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"x_radius" : 2*SPACE_WIDTH,
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"y_radius" : 2*SPACE_HEIGHT,
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"secondary_line_ratio" : 1
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},
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"include_background_plane" : False,
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}
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def construct(self):
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v_tex = "\\vec{\\textbf{v}}"
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eq = TexMobject("A", v_tex, "=", "\\lambda", v_tex)
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eq.highlight_by_tex(v_tex, YELLOW)
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eq.highlight_by_tex("\\lambda", MAROON_B)
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eq.scale(3)
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eq.add_background_rectangle()
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eq.shift(2*DOWN)
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title = TextMobject(
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"Eigen", "vectors \\\\",
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"Eigen", "values"
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, arg_separator = "")
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title.scale(2.5)
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title.to_edge(UP)
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# title.highlight_by_tex("Eigen", MAROON_B)
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title[0].highlight(YELLOW)
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title[2].highlight(MAROON_B)
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title.add_background_rectangle()
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self.add_vector([-1, 1], color = YELLOW, animate = False)
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self.apply_transposed_matrix([[3, 0], [1, 2]])
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self.plane.fade()
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self.remove(self.j_hat)
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self.add(eq, title)
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