visual.py

from manim import *

class CreateCircle(Scene):
    def construct(self):
        circle = Circle()  # create a circle
        circle.set_fill(PINK, opacity=0.5)  # set the color and transparency
        self.play(Create(circle))  # show the circle on screen

class SquareToCircle(Scene):
    def construct(self):
        circle = Circle()  # create a circle
        circle.set_fill(PINK, opacity=0.5)  # set color and transparency

        square = Square()  # create a square
        square.rotate(PI / 4)  # rotate a certain amount

        self.play(Create(square))  # animate the creation of the square
        self.play(Transform(square, circle))  # interpolate the square into the circle
        self.play(FadeOut(square))  # fade out animation

class SquareAndCircle(Scene):
    def construct(self):
        circle = Circle()  # create a circle
        circle.set_fill(PINK, opacity=0.5)  # set the color and transparency

        square = Square()  # create a square
        square.set_fill(BLUE, opacity=0.5)  # set the color and transparency

        square.next_to(circle, UP, buff=0.5)  # set the position
        self.play(Create(circle), Create(square))  # show the shapes on screen

class AnimatedSquareToCircle(Scene):
    def construct(self):
        circle = Circle()  # create a circle
        square = Square()  # create a square

        self.play(Create(square))  # show the square on screen
        self.play(square.animate.rotate(PI / 4))  # rotate the square
        self.play(
            ReplacementTransform(square, circle)
        )  # transform the square into a circle
        self.play(
            circle.animate.set_fill(PINK, opacity=0.5)
        )  # color the circle on screen
    
class DifferentRotations(Scene):
    def construct(self):
        left_square = Square(color=BLUE, fill_opacity=0.7).shift(2 * LEFT)
        right_square = Square(color=GREEN, fill_opacity=0.7).shift(2 * RIGHT)
        self.play(
            left_square.animate.rotate(PI), Rotate(right_square, angle=PI), run_time=2
        )
        self.wait()