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example.py
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example.py
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# flake8: noqa: F403, F405
# type: ignore
import sys
if "manim" in sys.modules:
from manim import *
MANIMGL = False
elif "manimlib" in sys.modules:
from manimlib import *
MANIMGL = True
else:
raise ImportError("This script must be run with either `manim` or `manimgl`")
from manim_slides import Slide, ThreeDSlide
class BasicExample(Slide):
def construct(self):
circle = Circle(radius=3, color=BLUE)
dot = Dot()
self.play(GrowFromCenter(circle))
self.next_slide() # Waits user to press continue to go to the next slide
self.start_loop() # Start loop
self.play(MoveAlongPath(dot, circle), run_time=2, rate_func=linear)
self.end_loop() # This will loop until user inputs a key
self.play(dot.animate.move_to(ORIGIN))
self.next_slide() # Waits user to press continue to go to the next slide
class MultipleAnimationsInLastSlide(Slide):
"""This is used to check against solution for issue #161."""
def construct(self):
circle = Circle(color=BLUE)
dot = Dot()
self.play(GrowFromCenter(circle))
self.play(FadeIn(dot))
self.next_slide()
self.play(dot.animate.move_to(RIGHT))
self.play(dot.animate.move_to(UP))
self.play(dot.animate.move_to(LEFT))
self.play(dot.animate.move_to(DOWN))
self.next_slide()
class TestFileTooLong(Slide):
"""This is used to check against solution for issue #123."""
def construct(self):
import random
circle = Circle(radius=3, color=BLUE)
dot = Dot()
self.play(GrowFromCenter(circle), run_time=0.1)
for _ in range(30):
direction = (random.random() - 0.5) * LEFT + (random.random() - 0.5) * UP
self.play(dot.animate.move_to(direction), run_time=0.1)
self.play(dot.animate.move_to(ORIGIN), run_time=0.1)
self.next_slide()
class ConvertExample(Slide):
"""WARNING: this example does not seem to work with ManimGL."""
def construct(self):
self.wait_time_between_slides = 0.1
title = VGroup(
Text("From Manim animations", t2c={"From": BLUE}),
Text("to slides presentation", t2c={"to": BLUE}),
Text("with Manim Slides", t2w={"[-12:]": BOLD}, t2c={"[-13:]": YELLOW}),
).arrange(DOWN)
step_1 = Text("1. In your scenes file, import Manim Slides")
step_2 = Text("2. Replace Scene with Slide")
step_3 = Text("3. In construct, add pauses where you need")
step_4 = Text("4. You can also create loops")
step_5 = Text("5. Render you scene with Manim")
step_6 = Text("6. Open your presentation with Manim Slides")
for step in [step_1, step_2, step_3, step_4, step_5, step_6]:
step.scale(0.5).to_corner(UL)
step = step_1
self.play(FadeIn(title))
self.next_slide()
code = Code(
code="""from manim import *
class Example(Scene):
def construct(self):
dot = Dot()
self.add(dot)
self.play(Indicate(dot, scale_factor=2))
square = Square()
self.play(Transform(dot, square))
self.play(Rotate(square, angle=PI/2))
""",
language="python",
)
code_step_1 = Code(
code="""from manim import *
from manim_slides import Slide
class Example(Scene):
def construct(self):
dot = Dot()
self.add(dot)
self.play(Indicate(dot, scale_factor=2))
square = Square()
self.play(Transform(dot, square))
self.play(Rotate(square, angle=PI/2))
""",
language="python",
)
code_step_2 = Code(
code="""from manim import *
from manim_slides import Slide
class Example(Slide):
def construct(self):
dot = Dot()
self.add(dot)
self.play(Indicate(dot, scale_factor=2))
square = Square()
self.play(Transform(dot, square))
self.play(Rotate(square, angle=PI/2))
""",
language="python",
)
code_step_3 = Code(
code="""from manim import *
from manim_slides import Slide
class Example(Slide):
def construct(self):
dot = Dot()
self.add(dot)
self.play(Indicate(dot, scale_factor=2))
self.next_slide()
square = Square()
self.play(Transform(dot, square))
self.next_slide()
self.play(Rotate(square, angle=PI/2))
""",
language="python",
)
code_step_4 = Code(
code="""from manim import *
from manim_slides import Slide
class Example(Slide):
def construct(self):
dot = Dot()
self.add(dot)
self.start_loop()
self.play(Indicate(dot, scale_factor=2))
self.end_loop()
square = Square()
self.play(Transform(dot, square))
self.next_slide()
self.play(Rotate(square, angle=PI/2))
""",
language="python",
)
code_step_5 = Code(
code="manim example.py Example",
language="console",
)
code_step_6 = Code(
code="manim-slides Example",
language="console",
)
or_text = Text("or generate HTML presentation").scale(0.5)
code_step_7 = Code(
code="manim-slides convert Example slides.html --open",
language="console",
).shift(DOWN)
self.play(self.wipe(title, code))
self.next_slide()
self.play(FadeIn(step, shift=RIGHT))
self.play(Transform(code, code_step_1))
self.next_slide()
self.play(Transform(step, step_2))
self.play(Transform(code, code_step_2))
self.next_slide()
self.play(Transform(step, step_3))
self.play(Transform(code, code_step_3))
self.next_slide()
self.play(Transform(step, step_4))
self.play(Transform(code, code_step_4))
self.next_slide()
self.play(Transform(step, step_5))
self.play(Transform(code, code_step_5))
self.next_slide()
self.play(Transform(step, step_6))
self.play(Transform(code, code_step_6))
self.play(code.animate.shift(UP), FadeIn(code_step_7), FadeIn(or_text))
self.next_slide()
watch_text = Text("Watch result on next slides!").shift(2 * DOWN).scale(0.5)
self.start_loop()
self.play(FadeIn(watch_text))
self.play(FadeOut(watch_text))
self.end_loop()
self.clear()
dot = Dot()
self.add(dot)
self.start_loop()
self.play(Indicate(dot, scale_factor=2))
self.end_loop()
square = Square()
self.play(Transform(dot, square))
self.remove(dot)
self.add(square)
self.next_slide()
self.play(Rotate(square, angle=PI / 4))
self.next_slide()
learn_more_text = (
VGroup(
Text("Learn more about Manim Slides:"),
Text("https://github.com/jeertmans/manim-slides", color=YELLOW),
)
.arrange(DOWN)
.scale(0.75)
)
self.play(Transform(square, learn_more_text))
# For ThreeDExample, things are different
if not MANIMGL:
# [manim-3d]
class ThreeDExample(ThreeDSlide):
def construct(self):
axes = ThreeDAxes()
circle = Circle(radius=3, color=BLUE)
dot = Dot(color=RED)
self.add(axes)
self.set_camera_orientation(phi=75 * DEGREES, theta=30 * DEGREES)
self.play(GrowFromCenter(circle))
self.begin_ambient_camera_rotation(rate=75 * DEGREES / 4)
self.next_slide()
self.start_loop()
self.play(MoveAlongPath(dot, circle), run_time=4, rate_func=linear)
self.end_loop()
self.stop_ambient_camera_rotation()
self.move_camera(phi=75 * DEGREES, theta=30 * DEGREES)
self.play(dot.animate.move_to(ORIGIN))
self.next_slide()
self.play(dot.animate.move_to(RIGHT * 3))
self.next_slide()
self.start_loop()
self.play(MoveAlongPath(dot, circle), run_time=2, rate_func=linear)
self.end_loop()
self.play(dot.animate.move_to(ORIGIN))
# [manim-3d]
else:
# [manimgl-3d]
# WARNING: 3b1b's manim change how ThreeDScene work,
# this is why things have to be managed differently.
class ThreeDExample(Slide):
CONFIG = {
"camera_class": ThreeDCamera,
}
def construct(self):
axes = ThreeDAxes()
circle = Circle(radius=3, color=BLUE)
dot = Dot(color=RED)
self.add(axes)
frame = self.camera.frame
frame.set_euler_angles(
theta=30 * DEGREES,
phi=75 * DEGREES,
gamma=0,
)
self.play(GrowFromCenter(circle))
def updater(m, dt):
return m.increment_theta((75 * DEGREES / 4) * dt)
frame.add_updater(updater)
self.next_slide()
self.start_loop()
self.play(MoveAlongPath(dot, circle), run_time=4, rate_func=linear)
self.end_loop()
frame.remove_updater(updater)
self.play(frame.animate.set_theta(30 * DEGREES))
self.play(dot.animate.move_to(ORIGIN))
self.next_slide()
self.play(dot.animate.move_to(RIGHT * 3))
self.next_slide()
self.start_loop()
self.play(MoveAlongPath(dot, circle), run_time=2, rate_func=linear)
self.end_loop()
self.play(dot.animate.move_to(ORIGIN))
# [manimgl-3d]