example_scenes.py

#!/usr/bin/env python

from helpers import *

from mobject.tex_mobject import TexMobject
from mobject import Mobject
from mobject.image_mobject import ImageMobject
from mobject.vectorized_mobject import *

from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *
from topics.functions import *
from topics.number_line import *
from topics.combinatorics import *
from scene import Scene
from camera import Camera
from mobject.svg_mobject import *
from mobject.tex_mobject import *

from mobject.vectorized_mobject import *

## To watch one of these scenes, run the following:
## python extract_scene.py -p file_name <SceneName>

class SquareToCircle(Scene):
    def construct(self):
        circle = Circle()
        circle.shift(np.array([10, -5, 0]))
        square = Square()
        square.rotate(np.pi/8)
        square.shift(np.array([10, -5, 0]))
        self.play(ShowCreation(square))
        self.play(Transform(square, circle))
        self.dither()

class WarpSquare(Scene):
    def construct(self):
        square = Square()
        self.play(ApplyPointwiseFunction(
            lambda (x, y, z) : complex_to_R3(np.exp(complex(x, y))),
            square
        ))
        self.dither()


class WriteStuff(Scene):
    def construct(self):
        self.play(Write(TextMobject("Stuff").scale(3)))