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.fractals import *
from topics.number_line import *
from topics.combinatorics import *
from topics.numerals import *
from topics.three_dimensions import *
from topics.objects import *
from scene import Scene
from scene.zoomed_scene import ZoomedScene
from camera import Camera
from mobject.svg_mobject import *
from mobject.tex_mobject import *

from eoc.chapter1 import OpeningQuote, PatreonThanks
from eoc.graph_scene import *


class Chapter3OpeningQuote(OpeningQuote):
    CONFIG = {
        "quote" : [
            "Using the chain rule is like peeling an onion: ",
            "you have to deal with each layer at a time, and ",
            "if it is too big you will start crying."
        ],
        "author" : "(Anonymous professor)"
    }

class TransitionFromLastVideo(TeacherStudentsScene):
    def construct(self):
        rules = power_rule, sine_rule, exp_rule = VGroup(*[
            TexMobject("\\frac{d(x^3)}{dx} = 3x^2"),
            TexMobject("\\frac{d(\\sin(x))}{dx} = \\cos(x)"),
            TexMobject("\\frac{d(e^x)}{dx} = e^x"),
        ])
        rules.arrange_submobjects(buff = LARGE_BUFF)
        rules.next_to(self.get_teacher(), UP, buff = MED_LARGE_BUFF)
        rules.to_edge(LEFT)

        self.add(rules)