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This commit is contained in:
Grant Sanderson 2021-08-19 10:34:31 -07:00
parent a187a409fa
commit 55003049f8
2 changed files with 60 additions and 8 deletions
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40
_2017/mug.py
View file

@ -2,7 +2,7 @@
# -*- coding: utf-8 -*-
from manim_imports_ext import *
from _2017.efvgt import ConfettiSpiril
# from _2017.efvgt import ConfettiSpiril
#revert_to_original_skipping_status
@ -84,6 +84,7 @@ class UtilitiesPuzzleScene(Scene):
houses = VGroup()
for x in range(3):
house = SVGMobject(file_name = "house")
house.set_stroke(BLACK, 5, background=True)
house.set_height(self.object_height)
house.set_fill(GREY_B)
house.move_to(x*self.h_distance*RIGHT)
@ -106,10 +107,12 @@ class UtilitiesPuzzleScene(Scene):
stroke_width = 0
)
objects.add(bounding_box)
self.add_foreground_mobjects(objects)
self.set_variables_as_attrs(
houses, utilities, objects, bounding_box
)
self.add(objects)
self.houses = houses
self.utilities = utilities
self.objects = objects
self.bounding_box = bounding_box
def get_utility(self, name, color):
circle = Circle(
@ -122,6 +125,8 @@ class UtilitiesPuzzleScene(Scene):
height = 0.65*circle.get_height(),
fill_color = WHITE,
)
utility.insert_n_curves(100)
utility.set_stroke(width=0)
if color == YELLOW:
utility.set_fill(GREY_D)
utility.move_to(circle)
@ -2065,3 +2070,28 @@ class NewMugThumbnail(Scene):
image.next_to(title, DOWN)
self.add(title, image)
class Thumbnail3(UtilitiesPuzzleScene):
def construct(self):
self.setup_configuration()
lines = self.get_almost_solution_lines()
lines.set_stroke(WHITE, 5, opacity=0.9)
group = VGroup(lines, self.objects)
group.set_height(5.5)
group.to_edge(DOWN, buff=0.1)
self.add(*group)
words = TexText("No crossing\\\\allowed!", font_size=72)
words.to_corner(UL)
# words.shift(3 * RIGHT)
arrow = Arrow(
words.get_corner(UR) + 0.1 * DOWN,
group.get_top() + 0.35 * DOWN + 0.15 * RIGHT,
path_arc=-75 * DEGREES,
thickness=0.1,
)
arrow.set_fill(RED)
self.add(words, arrow)

28
_2021/quick_eigen.py
View file

@ -97,15 +97,37 @@ class Thumbnail(Scene):
grid.set_opacity(0.5)
self.add(grid)
mat_mob = IntegerMatrix([[3, 1], [4, 1]])
mat_mob = IntegerMatrix([[3, 1], [4, 3]], h_buff=0.8)
mat_mob.set_height(3)
mat_mob.add_to_back(BackgroundRectangle(mat_mob))
mat_mob.to_edge(UP, buff=MED_SMALL_BUFF)
self.add(mat_mob)
answer = Tex("{m} \\pm \\sqrt{\\,{m}^2 - {p}", tex_to_color_map={"{m}": MEAN_COLOR, "{p}": PROD_COLOR})
a, b, c, d = mat_mob.get_entries()
a_to_d = d.get_center() - a.get_center()
rect = Rectangle(height=1, width=get_norm(a_to_d) + 1)
rect.round_corners()
rect.set_stroke(MEAN_COLOR, 3)
rect.rotate(angle_of_vector(a_to_d))
rect.move_to(VGroup(a, d))
rect2 = rect.copy()
rect2.set_color(PROD_COLOR)
rect2.rotate(-2 * angle_of_vector(a_to_d))
rect2.move_to(rect)
dashed_rects = VGroup(
DashedVMobject(rect.insert_n_curves(100), num_dashes=50),
DashedVMobject(rect2.insert_n_curves(100), num_dashes=50),
)
self.add(dashed_rects)
answer = Tex(
"\\lambda_1, \\lambda_2 = {3} \\pm \\sqrt{\\,{3}^2 - {5}} = 5, 1",
tex_to_color_map={"{3}": MEAN_COLOR, "{p}": PROD_COLOR}
)
answer.add_background_rectangle()
answer.set_width(FRAME_WIDTH / 2 + 2)
answer.set_width(12)
answer.to_edge(DOWN)
# answer.shift(SMALL_BUFF * UP)
self.add(answer)