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https://github.com/3b1b/manim.git
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Finished eoc8
This commit is contained in:
Grant Sanderson
@ -568,7 +568,8 @@ class ConstantVelocityCar(Scene):
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class ConstantVelocityPlot(PlotVelocity):
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CONFIG = {
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"x_axis_label" : "Time"
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"x_axis_label" : "Time",
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"units_of_area_color" : BLUE_E,
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}
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def construct(self):
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self.setup_axes()
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@ -684,7 +685,7 @@ class ConstantVelocityPlot(PlotVelocity):
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square = Square(
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stroke_color = BLACK,
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stroke_width = 1,
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fill_color = PINK,
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fill_color = self.units_of_area_color,
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fill_opacity = 1,
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)
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square.replace(
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@ -712,6 +713,7 @@ class ConstantVelocityPlot(PlotVelocity):
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)
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self.play(Indicate(self.y_axis_label_mob))
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self.play(FadeOut(y_line))
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for FadeClass in FadeIn, FadeOut:
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self.play(
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FadeClass(
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@ -756,6 +758,8 @@ class PiecewiseConstantPlot(PlotVelocity):
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"tick_size" : 0.2,
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}
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def construct(self):
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self.force_skipping()
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self.setup_graph()
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self.always_changing()
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self.show_piecewise_constant_graph()
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@ -1089,7 +1093,9 @@ class PiecewiseConstantPlot(PlotVelocity):
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def show_v_dt_for_all_rectangles(self):
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dt_brace_group = VGroup(self.dt_brace, self.dt_label)
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rects_subset = self.rects[10:15]
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rects_subset = self.rects[10:20]
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self.revert_to_original_skipping_status()
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last_rect = None
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for rect in rects_subset:
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@ -1385,9 +1391,18 @@ class PiecewiseConstantPlot(PlotVelocity):
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ticks.highlight(YELLOW)
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return ticks
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class DontKnowHowToHandleNonConstant(TeacherStudentsScene):
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def construct(self):
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self.play(*[
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ApplyMethod(pi.change, "maybe", UP)
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for pi in self.get_pi_creatures()
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])
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self.dither(3)
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class CarJourneyApproximation(Scene):
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CONFIG = {
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"n_jumps" : 5,
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"bottom_words" : "Approximated motion (5 jumps)",
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}
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def construct(self):
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points = [5*LEFT + v for v in UP, 2*DOWN]
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@ -1395,8 +1410,9 @@ class CarJourneyApproximation(Scene):
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h_line = Line(LEFT, RIGHT).scale(SPACE_WIDTH)
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words = [
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TextMobject("Real motion (smooth)").shift(3*UP),
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TextMobject("Approximated motion (jerky)").shift(0.5*DOWN),
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TextMobject(self.bottom_words).shift(0.5*DOWN),
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]
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words[1].highlight(GREEN)
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self.add(h_line, *cars + words)
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@ -1427,6 +1443,7 @@ class CarJourneyApproximation(Scene):
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class LessWrongCarJourneyApproximation(CarJourneyApproximation):
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CONFIG = {
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"n_jumps" : 20,
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"bottom_words" : "Better approximation (20 jumps)",
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}
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class TellMeThatsNotSurprising(TeacherStudentsScene):
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@ -2715,9 +2732,64 @@ class NextVideo(TeacherStudentsScene):
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self.play(Write(integral))
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self.dither(5)
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class Chapter8PatreonThanks(PatreonThanks):
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CONFIG = {
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"specific_patrons" : [
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"Ali Yahya",
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"CrypticSwarm",
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"Kaustuv DeBiswas",
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"Kathryn Schmiedicke",
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"Karan Bhargava",
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"Ankit Agarwal",
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"Yu Jun",
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"Dave Nicponski",
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"Damion Kistler",
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"Juan Benet",
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"Othman Alikhan",
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"Markus Persson",
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"Dan Buchoff",
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"Derek Dai",
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"Joseph John Cox",
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"Luc Ritchie",
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"Robert Teed",
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"Jason Hise",
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"Meshal Alshammari",
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"Bernd Sing",
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"Nils Schneider",
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"James Thornton",
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"Mustafa Mahdi",
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"Jonathan Eppele",
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"Mathew Bramson",
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"Jerry Ling",
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"Mark Govea",
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"Vecht",
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"Shimin Kuang",
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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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}
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class Thumbnail(FundamentalTheorem):
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CONFIG = {
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"x_axis_label" : "",
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"y_axis_label" : "",
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"graph_origin" : 1.5*DOWN + 4*LEFT,
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"y_axis_height" : 5,
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}
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def construct(self):
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self.setup_axes()
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graph = self.get_graph(
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lambda x : -0.01*x*(x-3)*(x-6)*(x-12) + 3,
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color = YELLOW
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)
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rects = self.get_riemann_rectangles(
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graph,
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x_min = 1, x_max = 8,
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dx = 0.5,
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)
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self.add(rects, graph)
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@ -125,7 +125,7 @@ class PiCreature(SVGMobject):
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def change(self, new_mode, look_at_arg = None):
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self.change_mode(new_mode)
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if look_at_arg:
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if look_at_arg is not None:
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self.look_at(look_at_arg)
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return self
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@ -184,7 +184,6 @@ class PiCreature(SVGMobject):
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self.look(top_mouth_point - bottom_mouth_point)
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return self
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def get_all_pi_creature_modes():
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result = []
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prefix = "PiCreatures_"
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@ -196,7 +195,6 @@ def get_all_pi_creature_modes():
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)
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return result
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class Randolph(PiCreature):
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pass #Nothing more than an alternative name
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@ -206,7 +204,6 @@ class Mortimer(PiCreature):
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"flip_at_start" : True,
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}
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class Mathematician(PiCreature):
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CONFIG = {
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"color" : GREY,
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@ -232,7 +229,6 @@ class BabyPiCreature(PiCreature):
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pupil.scale_in_place(self.pupil_scale_factor)
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self.look(looking_direction)
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class Blink(ApplyMethod):
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CONFIG = {
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"rate_func" : squish_rate_func(there_and_back)
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@ -360,7 +356,7 @@ class RemovePiCreatureBubble(AnimationGroup):
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if surrounding_scene is not None:
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surrounding_scene.add(self.pi_creature)
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###########
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class PiCreatureScene(Scene):
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CONFIG = {
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@ -566,7 +562,6 @@ class PiCreatureScene(Scene):
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for pi in pi_creatures
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]))
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class TeacherStudentsScene(PiCreatureScene):
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CONFIG = {
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"student_colors" : [BLUE_D, BLUE_C, BLUE_E],
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@ -3,7 +3,7 @@ from helpers import *
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from scene.scene import Scene
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from animation.simple_animations import Write, DrawBorderThenFill
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from animation.transform import FadeIn, ApplyMethod
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from animation.transform import FadeIn, FadeOut, ApplyMethod
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from mobject.vectorized_mobject import VGroup
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from mobject.tex_mobject import TexMobject, TextMobject
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from topics.characters import Mortimer, Blink
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@ -90,8 +90,9 @@ class PatreonThanks(Scene):
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"Ripta Pasay",
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"Felipe Diniz",
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],
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"max_patrons_height" : 2*SPACE_HEIGHT - 1,
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"patron_group_size" : 8,
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"patron_scale_val" : 0.7,
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}
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def construct(self):
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morty = Mortimer()
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@ -105,59 +106,41 @@ class PatreonThanks(Scene):
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patreon_logo = PatreonLogo()
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patreon_logo.next_to(morty, UP, buff = MED_LARGE_BUFF)
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left_patrons = VGroup(*map(TextMobject,
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self.specific_patrons[:n_patrons/2]
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))
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right_patrons = VGroup(*map(TextMobject,
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self.specific_patrons[n_patrons/2:]
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))
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for patrons in left_patrons, right_patrons:
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patrons.arrange_submobjects(
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DOWN, aligned_edge = LEFT,
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buff = 1.5*MED_SMALL_BUFF
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)
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all_patrons = VGroup(left_patrons, right_patrons)
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all_patrons.scale(self.patron_scale_val)
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for patrons, vect in (left_patrons, LEFT), (right_patrons, RIGHT):
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patrons.to_edge(vect, buff = MED_SMALL_BUFF)
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if patrons.get_height() > 2*SPACE_HEIGHT - LARGE_BUFF:
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patrons.to_edge(UP, buff = MED_SMALL_BUFF)
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shift_distance = max(
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0, (all_patrons.get_height() - 2*SPACE_HEIGHT)
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)
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if shift_distance > 0:
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shift_distance += 1
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velocity = shift_distance/9.0
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def get_shift_anim():
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return ApplyMethod(
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all_patrons.shift, velocity*UP,
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rate_func = None
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)
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patrons = map(TextMobject, self.specific_patrons)
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patron_groups = []
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index = 0
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counter = 0
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while index < len(patrons):
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next_index = index + self.patron_group_size
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group = VGroup(*patrons[index:next_index])
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group.arrange_submobjects(DOWN, aligned_edge = LEFT)
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if counter%2 == 0:
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group.to_edge(LEFT)
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else:
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group.to_edge(RIGHT)
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patron_groups.append(group)
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index = next_index
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counter += 1
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self.play(
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morty.change_mode, "gracious",
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DrawBorderThenFill(patreon_logo),
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)
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self.play(Write(special_thanks, run_time = 1))
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self.play(
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Write(left_patrons),
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morty.look_at, left_patrons
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)
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self.play(
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Write(right_patrons),
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morty.look_at, right_patrons
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)
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self.play(Blink(morty), get_shift_anim())
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for patrons in left_patrons, right_patrons:
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for index in 0, -1:
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self.play(
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morty.look_at, patrons[index],
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get_shift_anim()
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)
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self.play(get_shift_anim())
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for i, group in enumerate(patron_groups):
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anims = [
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FadeIn(
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group, run_time = 2,
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submobject_mode = "lagged_start",
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lag_factor = 4,
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),
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morty.look_at, group.get_top(),
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]
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if i >= 2:
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anims.append(FadeOut(patron_groups[i-2]))
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self.play(*anims)
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self.play(morty.look_at, group.get_bottom())
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self.play(Blink(morty))
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