#!/usr/bin/env python from manim import * # To watch one of these scenes, run the following:# python --quality m manim -p example_scenes.py SquareToCircle## Use the flag --quality l for a faster rendering at a lower quality.# Use -s to skip to the end and just save the final frame# Use the -p to have preview of the animation (or image, if -s was# used) pop up once done.# Use -n <number> to skip ahead to the nth animation of a scene.# Use -r <number> to specify a resolution (for example, -r 1920,1080# for a 1920x1080 video) class OpeningManim(Scene): def construct(self): title = Tex(r"This is some \LaTeX") basel = MathTex(r"\sum_{n=1}^\infty \frac{1}{n^2} = \frac{\pi^2}{6}") VGroup(title, basel).arrange(DOWN) self.play( Write(title), FadeIn(basel, shift=DOWN), ) self.wait() transform_title = Tex("That was a transform") transform_title.to_corner(UP + LEFT) self.play( Transform(title, transform_title), LaggedStart(*(FadeOut(obj, shift=DOWN) for obj in basel)), ) self.wait() grid = NumberPlane() grid_title = Tex("This is a grid", font_size=72) grid_title.move_to(transform_title) self.add(grid, grid_title) # Make sure title is on top of grid self.play( FadeOut(title), FadeIn(grid_title, shift=UP), Create(grid, run_time=3, lag_ratio=0.1), ) self.wait() grid_transform_title = Tex( r"That was a non-linear function \\ applied to the grid", ) grid_transform_title.move_to(grid_title, UL) grid.prepare_for_nonlinear_transform() self.play( grid.animate.apply_function( lambda p: ( p + np.array( [ np.sin(p[1]), np.sin(p[0]), 0, ], ) ), ), run_time=3, ) self.wait() self.play(Transform(grid_title, grid_transform_title)) self.wait() class SquareToCircle(Scene): def construct(self): circle = Circle() square = Square() square.flip(RIGHT) square.rotate(-3 * TAU / 8) circle.set_fill(PINK, opacity=0.5) self.play(Create(square)) self.play(Transform(square, circle)) self.play(FadeOut(square)) class WarpSquare(Scene): def construct(self): square = Square() self.play( ApplyPointwiseFunction( lambda point: complex_to_R3(np.exp(R3_to_complex(point))), square, ), ) self.wait() class WriteStuff(Scene): def construct(self): example_text = Tex("This is a some text", tex_to_color_map={"text": YELLOW}) example_tex = MathTex( "\\sum_{k=1}^\\infty {1 \\over k^2} = {\\pi^2 \\over 6}", ) group = VGroup(example_text, example_tex) group.arrange(DOWN) group.width = config["frame_width"] - 2 * LARGE_BUFF self.play(Write(example_text)) self.play(Write(example_tex)) self.wait() class UpdatersExample(Scene): def construct(self): decimal = DecimalNumber( 0, show_ellipsis=True, num_decimal_places=3, include_sign=True, ) square = Square().to_edge(UP) decimal.add_updater(lambda d: d.next_to(square, RIGHT)) decimal.add_updater(lambda d: d.set_value(square.get_center()[1])) self.add(square, decimal) self.play( square.animate.to_edge(DOWN), rate_func=there_and_back, run_time=5, ) self.wait() class SpiralInExample(Scene): def construct(self): logo_green = "#81b29a" logo_blue = "#454866" logo_red = "#e07a5f" font_color = "#ece6e2" pi = MathTex(r"\pi").scale(7).set_color(font_color) pi.shift(2.25 * LEFT + 1.5 * UP) circle = Circle(color=logo_green, fill_opacity=0.7, stroke_width=0).shift(LEFT) square = Square(color=logo_blue, fill_opacity=0.8, stroke_width=0).shift(UP) triangle = Triangle(color=logo_red, fill_opacity=0.9, stroke_width=0).shift( RIGHT ) pentagon = Polygon( *[ [np.cos(2 * np.pi / 5 * i), np.sin(2 * np.pi / 5 * i), 0] for i in range(5) ], color=PURPLE_B, fill_opacity=1, stroke_width=0, ).shift(UP + 2 * RIGHT) shapes = VGroup(triangle, square, circle, pentagon, pi) self.play(SpiralIn(shapes, fade_in_fraction=0.9)) self.wait() self.play(FadeOut(shapes)) Triangle.set_default(stroke_width=20) class LineJoints(Scene): def construct(self): t1 = Triangle() t2 = Triangle(joint_type=LineJointType.ROUND) t3 = Triangle(joint_type=LineJointType.BEVEL) grp = VGroup(t1, t2, t3).arrange(RIGHT) grp.set(width=config.frame_width - 1) self.add(grp) # See many more examples at https://docs.manim.community/en/stable/examples.html
#!/usr/bin/env python
from manim import *
# To watch one of these scenes, run the following:
# python --quality m manim -p example_scenes.py SquareToCircle
#
# Use the flag --quality l for a faster rendering at a lower quality.
# Use -s to skip to the end and just save the final frame
# Use the -p to have preview of the animation (or image, if -s was
# used) pop up once done.
# Use -n <number> to skip ahead to the nth animation of a scene.
# Use -r <number> to specify a resolution (for example, -r 1920,1080
# for a 1920x1080 video)
class OpeningManim(Scene):
def construct(self):
title = Tex(r"This is some \LaTeX")
basel = MathTex(r"\sum_{n=1}^\infty \frac{1}{n^2} = \frac{\pi^2}{6}")
VGroup(title, basel).arrange(DOWN)
self.play(
Write(title),
FadeIn(basel, shift=DOWN),
)
self.wait()
transform_title = Tex("That was a transform")
transform_title.to_corner(UP + LEFT)
self.play(
Transform(title, transform_title),
LaggedStart(*(FadeOut(obj, shift=DOWN) for obj in basel)),
)
self.wait()
grid = NumberPlane()
grid_title = Tex("This is a grid", font_size=72)
grid_title.move_to(transform_title)
self.add(grid, grid_title) # Make sure title is on top of grid
self.play(
FadeOut(title),
FadeIn(grid_title, shift=UP),
Create(grid, run_time=3, lag_ratio=0.1),
)
self.wait()
grid_transform_title = Tex(
r"That was a non-linear function \\ applied to the grid",
)
grid_transform_title.move_to(grid_title, UL)
grid.prepare_for_nonlinear_transform()
self.play(
grid.animate.apply_function(
lambda p: (
p
+ np.array(
[
np.sin(p[1]),
np.sin(p[0]),
0,
],
)
),
),
run_time=3,
)
self.wait()
self.play(Transform(grid_title, grid_transform_title))
self.wait()
class SquareToCircle(Scene):
def construct(self):
circle = Circle()
square = Square()
square.flip(RIGHT)
square.rotate(-3 * TAU / 8)
circle.set_fill(PINK, opacity=0.5)
self.play(Create(square))
self.play(Transform(square, circle))
self.play(FadeOut(square))
class WarpSquare(Scene):
def construct(self):
square = Square()
self.play(
ApplyPointwiseFunction(
lambda point: complex_to_R3(np.exp(R3_to_complex(point))),
square,
),
)
self.wait()
class WriteStuff(Scene):
def construct(self):
example_text = Tex("This is a some text", tex_to_color_map={"text": YELLOW})
example_tex = MathTex(
"\\sum_{k=1}^\\infty {1 \\over k^2} = {\\pi^2 \\over 6}",
)
group = VGroup(example_text, example_tex)
group.arrange(DOWN)
group.width = config["frame_width"] - 2 * LARGE_BUFF
self.play(Write(example_text))
self.play(Write(example_tex))
self.wait()
class UpdatersExample(Scene):
def construct(self):
decimal = DecimalNumber(
0,
show_ellipsis=True,
num_decimal_places=3,
include_sign=True,
)
square = Square().to_edge(UP)
decimal.add_updater(lambda d: d.next_to(square, RIGHT))
decimal.add_updater(lambda d: d.set_value(square.get_center()[1]))
self.add(square, decimal)
self.play(
square.animate.to_edge(DOWN),
rate_func=there_and_back,
run_time=5,
)
self.wait()
class SpiralInExample(Scene):
def construct(self):
logo_green = "#81b29a"
logo_blue = "#454866"
logo_red = "#e07a5f"
font_color = "#ece6e2"
pi = MathTex(r"\pi").scale(7).set_color(font_color)
pi.shift(2.25 * LEFT + 1.5 * UP)
circle = Circle(color=logo_green, fill_opacity=0.7, stroke_width=0).shift(LEFT)
square = Square(color=logo_blue, fill_opacity=0.8, stroke_width=0).shift(UP)
triangle = Triangle(color=logo_red, fill_opacity=0.9, stroke_width=0).shift(
RIGHT
)
pentagon = Polygon(
*[
[np.cos(2 * np.pi / 5 * i), np.sin(2 * np.pi / 5 * i), 0]
for i in range(5)
],
color=PURPLE_B,
fill_opacity=1,
stroke_width=0,
).shift(UP + 2 * RIGHT)
shapes = VGroup(triangle, square, circle, pentagon, pi)
self.play(SpiralIn(shapes, fade_in_fraction=0.9))
self.wait()
self.play(FadeOut(shapes))
Triangle.set_default(stroke_width=20)
class LineJoints(Scene):
def construct(self):
t1 = Triangle()
t2 = Triangle(joint_type=LineJointType.ROUND)
t3 = Triangle(joint_type=LineJointType.BEVEL)
grp = VGroup(t1, t2, t3).arrange(RIGHT)
grp.set(width=config.frame_width - 1)
self.add(grp)
# See many more examples at https://docs.manim.community/en/stable/examples.html