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Merge pull request #154 from 3b1b/winding-number-grant

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Winding number grant
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Grant Sanderson 2018-03-08 13:57:04 -08:00 • committed by GitHub
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78 changed files with 700 additions and 260 deletions
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1
active_projects/WindingNumber.py
View file

@ -8,6 +8,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from animation.continual_animation import *
from topics.geometry import *

391
active_projects/WindingNumber_G.py
View file

@ -8,6 +8,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from animation.continual_animation import *
from topics.geometry import *
@ -31,7 +32,7 @@ from topics.graph_scene import *
from active_projects.WindingNumber import *
class AltTeacherStudentScene(TeacherStudentsScene):
class AltTeacherStudentsScene(TeacherStudentsScene):
def setup(self):
TeacherStudentsScene.setup(self)
self.teacher.set_color(YELLOW_E)
@ -39,24 +40,34 @@ class AltTeacherStudentScene(TeacherStudentsScene):
###############
class TestColorMap(ColorMappedObjectsScene):
class IntroSceneWrapper(PiCreatureScene):
CONFIG = {
"func" : example_plane_func,
"default_pi_creature_kwargs" : {
"color" : YELLOW_E,
"flip_at_start" : False,
"height" : 2,
},
"default_pi_creature_start_corner" : DOWN+LEFT,
# "default_pi_creature_height" : 1,
}
def construct(self):
ColorMappedObjectsScene.construct(self)
circle = Circle(color = WHITE)
circle.color_using_background_image(self.background_image_file)
morty = self.pi_creature
rect = ScreenRectangle(height = 5)
rect.to_corner(UP+RIGHT)
self.add(rect)
self.play(ShowCreation(circle))
self.play(circle.scale, 2)
self.wait()
self.play(circle.set_fill, {"opacity" : 0.2})
for corner in standard_rect:
self.play(circle.to_corner, corner, run_time = 2)
main_topic, meta_topic = toipcs = VGroup(
TextMobject("Main topic"),
TextMobject("Meta topic"),
)
topics.arrange_submobjects(DOWN, aligned_edge = LEFT)
class PiCreaturesAreIntrigued(AltTeacherStudentScene):
class PiCreaturesAreIntrigued(AltTeacherStudentsScene):
def construct(self):
self.teacher_says(
"You can extend \\\\ this to 2d",
@ -66,7 +77,7 @@ class PiCreaturesAreIntrigued(AltTeacherStudentScene):
self.look_at(self.screen)
self.wait(3)
class RewriteEquationWithTeacher(AltTeacherStudentScene):
class RewriteEquationWithTeacher(AltTeacherStudentsScene):
def construct(self):
equations = VGroup(
TexMobject(
@ -114,8 +125,16 @@ class RewriteEquationWithTeacher(AltTeacherStudentScene):
dot.fade(1)
dot.center()
question = TextMobject(
"Wait...what would \\\\", "+", "and", "\\textminus", " \\, be in 2d?",
)
question.highlight_by_tex_to_color_map({
"+" : "green",
"textminus" : "red"
})
self.student_says(
"Wait...what would \\\\ + and \\textminus \\, be in 2d?",
question,
target_mode = "sassy",
student_index = 2,
added_anims = [
@ -123,6 +142,7 @@ class RewriteEquationWithTeacher(AltTeacherStudentScene):
self.teacher.change, "plain",
],
bubble_kwargs = {"direction" : LEFT},
run_time = 1,
)
self.play(
Write(plane, run_time = 1),
@ -135,12 +155,341 @@ class RewriteEquationWithTeacher(AltTeacherStudentScene):
self.play(dot.move_to, plane.coords_to_point(*coords))
self.wait()
class DotsHoppingToColor(Scene):
CONFIG = {
"dot_radius" : 0.05,
"plane_width" : 6,
"plane_height" : 6,
"x_shift" : SPACE_WIDTH/2,
"y_shift" : MED_LARGE_BUFF,
"output_scalar" : 10,
"non_renormalized_func" : plane_func_by_wind_spec(
(-2, -1, 2),
(1, 2, 1),
(2, -2, 1),
),
"dot_density" : 0.25,
}
def construct(self):
input_coloring, output_coloring = self.get_colorings()
input_plane, output_plane = self.get_planes()
v_line = Line(UP, DOWN).scale(SPACE_HEIGHT)
v_line.set_stroke(WHITE, 5)
dots = self.get_dots(input_plane, output_plane)
right_half_block = Rectangle(
height = 2*SPACE_HEIGHT,
width = SPACE_WIDTH - SMALL_BUFF,
stroke_width = 0,
fill_color = BLACK,
fill_opacity = 0.8,
)
right_half_block.to_edge(RIGHT, buff = 0)
#Introduce parts
self.add(input_plane, output_plane, v_line)
self.play(
FadeIn(output_coloring),
Animation(output_plane),
output_plane.white_parts.highlight, BLACK,
output_plane.lines_to_fade.set_stroke, {"width" : 0},
)
self.wait()
self.play(LaggedStart(GrowFromCenter, dots, run_time = 3))
self.wait()
#Hop over and back
self.play(LaggedStart(
MoveToTarget, dots,
path_arc = -TAU/4,
run_time = 3,
))
self.wait()
self.play(LaggedStart(
ApplyMethod, dots,
lambda d : (d.set_fill, d.target_color),
))
self.wait()
self.play(LaggedStart(
ApplyMethod, dots,
lambda d : (d.move_to, d.original_position),
path_arc = TAU/4,
run_time = 3,
))
self.wait()
self.play(
FadeIn(input_coloring),
Animation(input_plane),
input_plane.white_parts.highlight, BLACK,
input_plane.lines_to_fade.set_stroke, {"width" : 0},
FadeOut(dots),
)
self.wait()
#Cover output half
right_half_block.save_state()
right_half_block.next_to(SPACE_WIDTH*RIGHT, RIGHT)
self.play(right_half_block.restore)
self.wait()
# Show yellow points
inspector = DashedLine(
ORIGIN, TAU*UP,
dashed_segment_length = TAU/24,
fill_opacity = 0,
stroke_width = 3,
stroke_color = WHITE,
)
inspector.add(*inspector.copy().highlight(BLACK).shift((TAU/24)*UP))
inspector.apply_complex_function(np.exp)
inspector.scale(0.15)
inspector_image = inspector.copy()
def point_function(point):
in_coords = input_plane.point_to_coords(point)
out_coords = self.func(in_coords)
return output_plane.coords_to_point(*out_coords)
def update_inspector_image(inspector_image):
inspector_image.move_to(point_function(inspector.get_center()))
inspector_image_update_anim = UpdateFromFunc(
inspector_image, update_inspector_image
)
yellow_points_label = TextMobject("Yellow points")
yellow_points_label.scale(0.7)
yellow_points_label.highlight(BLACK)
self.play(
inspector.move_to, input_plane.coords_to_point(1.5, 0),
inspector.set_stroke, {"width" : 2},
)
yellow_points_label.next_to(inspector, UP)
self.play(
Rotating(
inspector, about_point = inspector.get_corner(UP+LEFT),
rate_func = smooth,
run_time = 2,
),
Write(yellow_points_label)
)
self.wait()
self.play(right_half_block.next_to, SPACE_WIDTH*RIGHT, RIGHT)
inspector_image_update_anim.update(0)
self.play(ReplacementTransform(
inspector.copy(), inspector_image,
path_arc = -TAU/4,
))
self.play(
ApplyMethod(
inspector.move_to,
input_plane.coords_to_point(0, 2),
path_arc = -TAU/8,
run_time = 3,
),
inspector_image_update_anim
)
self.play(
ApplyMethod(
inspector.move_to,
input_plane.coords_to_point(2, 0),
path_arc = TAU/4,
run_time = 3,
),
inspector_image_update_anim
)
self.play(FadeOut(yellow_points_label))
# Show black zero
zeros = tuple(it.starmap(input_plane.coords_to_point, [
(-2, -1), (1, 2), (2, -2),
]))
for x in range(2):
for zero in zeros:
self.play(
ApplyMethod(
inspector.move_to, zero,
path_arc = -TAU/8,
run_time = 2,
),
inspector_image_update_anim,
)
self.wait()
self.play(FadeOut(VGroup(inspector, inspector_image)))
# Show all dots and slowly fade them out
for dot in dots:
dot.scale(1.5)
self.play(
FadeOut(input_coloring),
input_plane.white_parts.highlight, WHITE,
LaggedStart(GrowFromCenter, dots)
)
self.wait()
random.shuffle(dots.submobjects)
self.play(LaggedStart(
FadeOut, dots,
lag_ratio = 0.05,
run_time = 10,
))
# Ask about whether a region contains a zero
question = TextMobject("Does this region \\\\ contain a zero?")
question.add_background_rectangle(opacity = 1)
question.next_to(input_plane.label, DOWN)
square = Square()
square.match_background_image_file(input_coloring)
square.move_to(input_plane)
self.play(ShowCreation(square), Write(question))
self.wait()
quads = [
(0, 0.5, 6, 6.25),
(1, 1, 0.5, 2),
(-1, -1, 3, 4.5),
(0, 1.25, 5, 1.7),
(-2, -1, 1, 1),
]
for x, y, width, height in quads:
self.play(
square.stretch_to_fit_width, width,
square.stretch_to_fit_height, height,
square.move_to, input_plane.coords_to_point(x, y)
)
self.wait()
###
def func(self, coord_pair):
out_coords = np.array(self.non_renormalized_func(coord_pair))
out_norm = np.linalg.norm(out_coords)
if out_norm > 0.5:
angle = angle_of_vector(out_coords)
factor = 0.5-0.1*np.cos(4*angle)
target_norm = factor*np.log(out_norm)
out_coords *= target_norm / out_norm
return tuple(out_coords)
def get_colorings(self):
in_cmos = ColorMappedObjectsScene(
func = lambda p : self.non_renormalized_func(
(p[0]+self.x_shift, p[1]+self.y_shift)
)
)
scalar = self.output_scalar
out_cmos = ColorMappedObjectsScene(
func = lambda p : (
scalar*(p[0]-self.x_shift), scalar*(p[1]+self.y_shift)
)
)
input_coloring = Rectangle(
height = self.plane_height,
width = self.plane_width,
stroke_width = 0,
fill_color = WHITE,
fill_opacity = 1,
)
output_coloring = input_coloring.copy()
colorings = [input_coloring, output_coloring]
vects = [LEFT, RIGHT]
cmos_pair = [in_cmos, out_cmos]
for coloring, vect, cmos in zip(colorings, vects, cmos_pair):
coloring.move_to(self.x_shift*vect + self.y_shift*DOWN)
coloring.color_using_background_image(cmos.background_image_file)
return colorings
def get_planes(self):
input_plane = NumberPlane(
x_radius = self.plane_width/2.0,
y_radius = self.plane_height/2.0,
)
output_plane = input_plane.copy()
planes = [input_plane, output_plane]
vects = [LEFT, RIGHT]
label_texts = ["Input", "Output"]
label_colors = [GREEN, RED]
for plane, vect, text, color in zip(planes, vects, label_texts, label_colors):
plane.stretch_to_fit_width(self.plane_width)
plane.add_coordinates(x_vals = range(-2, 3), y_vals = range(-2, 3))
plane.white_parts = VGroup(plane.axes, plane.coordinate_labels)
plane.lines_to_fade = VGroup(plane.main_lines, plane.secondary_lines)
plane.move_to(vect*SPACE_WIDTH/2 + self.y_shift*DOWN)
label = TextMobject(text)
label.scale(1.5)
label.add_background_rectangle()
label.move_to(plane)
label.to_edge(UP, buff = MED_SMALL_BUFF)
plane.add(label)
plane.label = label
for submob in plane.submobject_family():
if isinstance(submob, TexMobject) and hasattr(submob, "background_rectangle"):
submob.remove(submob.background_rectangle)
return planes
def get_dots(self, input_plane, output_plane):
step = self.dot_density
x_min = -3.0
x_max = 3.0
y_min = -3.0
y_max = 3.0
dots = VGroup()
for x in np.arange(x_min, x_max + step, step):
for y in np.arange(y_max, y_min - step, -step):
out_coords = self.func((x, y))
dot = Dot(radius = self.dot_radius)
dot.set_stroke(BLACK, 1)
dot.move_to(input_plane.coords_to_point(x, y))
dot.original_position = dot.get_center()
dot.generate_target()
dot.target.move_to(output_plane.coords_to_point(*out_coords))
dot.target_color = rgba_to_color(point_to_rgba(
tuple(self.output_scalar*np.array(out_coords))
))
dots.add(dot)
return dots
class SoWeFoundTheZeros(AltTeacherStudentsScene):
def construct(self):
self.student_says(
"Aha! So we \\\\ found the solutions!",
target_mode = "hooray",
student_index = 2,
bubble_kwargs = {"direction" : LEFT},
)
self.wait()
self.teacher_says(
"Er...only \\\\ kind of",
target_mode = "hesitant"
)
self.wait(3)
class PiCreatureAsksWhatWentWrong(PiCreatureScene):
def construct(self):
randy = self.pi_creature
randy.set_color(YELLOW_E)
randy.flip()
randy.to_corner(DOWN+LEFT)
question = TextMobject("What went wrong?")
question.next_to(randy, UP)
question.shift_onto_screen()
question.save_state()
question.shift(DOWN).fade(1)
self.play(randy.change, "erm")
self.wait(2)
self.play(
Animation(VectorizedPoint(ORIGIN)),
question.restore,
randy.change, "confused",
)
self.wait(5)

238
animation/compositions.py Normal file
View file

@ -0,0 +1,238 @@
import numpy as np
import itertools as it
from helpers import *
import warnings
from mobject import Mobject, Group
from mobject.vectorized_mobject import VMobject
from mobject.tex_mobject import TextMobject
from animation import Animation
from transform import Transform
class LaggedStart(Animation):
CONFIG = {
"run_time" : 2,
"lag_ratio" : 0.5,
}
def __init__(self, AnimationClass, mobject, arg_creator = None, **kwargs):
digest_config(self, kwargs)
for key in "rate_func", "run_time", "lag_ratio":
if key in kwargs:
kwargs.pop(key)
if arg_creator is None:
arg_creator = lambda mobject : (mobject,)
self.subanimations = [
AnimationClass(
*arg_creator(submob),
run_time = self.run_time,
rate_func = squish_rate_func(
self.rate_func, beta, beta + self.lag_ratio
),
**kwargs
)
for submob, beta in zip(
mobject,
np.linspace(0, 1-self.lag_ratio, len(mobject))
)
]
Animation.__init__(self, mobject, **kwargs)
def update(self, alpha):
for anim in self.subanimations:
anim.update(alpha)
return self
def clean_up(self, *args, **kwargs):
for anim in self.subanimations:
anim.clean_up(*args, **kwargs)
class Succession(Animation):
CONFIG = {
"rate_func" : None,
}
def __init__(self, *args, **kwargs):
"""
Each arg will either be an animation, or an animation class
followed by its arguments (and potentially a dict for
configuration).
For example,
Succession(
ShowCreation(circle),
Transform, circle, square,
Transform, circle, triangle,
ApplyMethod, circle.shift, 2*UP, {"run_time" : 2},
)
"""
animations = []
state = {
"animations" : animations,
"curr_class" : None,
"curr_class_args" : [],
"curr_class_config" : {},
}
def invoke_curr_class(state):
if state["curr_class"] is None:
return
anim = state["curr_class"](
*state["curr_class_args"],
**state["curr_class_config"]
)
state["animations"].append(anim)
anim.update(1)
state["curr_class"] = None
state["curr_class_args"] = []
state["curr_class_config"] = {}
for arg in args:
if isinstance(arg, Animation):
animations.append(arg)
arg.update(1)
invoke_curr_class(state)
elif isinstance(arg, type) and issubclass(arg, Animation):
invoke_curr_class(state)
state["curr_class"] = arg
elif isinstance(arg, dict):
state["curr_class_config"] = arg
else:
state["curr_class_args"].append(arg)
invoke_curr_class(state)
for anim in animations:
anim.update(0)
animations = filter (lambda x : not(x.empty), animations)
self.run_times = [anim.run_time for anim in animations]
if "run_time" in kwargs:
run_time = kwargs.pop("run_time")
warnings.warn("Succession doesn't currently support explicit run_time.")
run_time = sum(self.run_times)
self.num_anims = len(animations)
if self.num_anims == 0:
self.empty = True
self.animations = animations
#Have to keep track of this run_time, because Scene.play
#might very well mess with it.
self.original_run_time = run_time
# critical_alphas[i] is the start alpha of self.animations[i]
# critical_alphas[i + 1] is the end alpha of self.animations[i]
critical_times = np.concatenate(([0], np.cumsum(self.run_times)))
self.critical_alphas = map (lambda x : np.true_divide(x, run_time), critical_times) if self.num_anims > 0 else [0.0]
# self.scene_mobjects_at_time[i] is the scene's mobjects at start of self.animations[i]
# self.scene_mobjects_at_time[i + 1] is the scene mobjects at end of self.animations[i]
self.scene_mobjects_at_time = [None for i in range(self.num_anims + 1)]
self.scene_mobjects_at_time[0] = Group()
for i in range(self.num_anims):
self.scene_mobjects_at_time[i + 1] = self.scene_mobjects_at_time[i].copy()
self.animations[i].clean_up(self.scene_mobjects_at_time[i + 1])
self.current_alpha = 0
self.current_anim_index = 0 # If self.num_anims == 0, this is an invalid index, but so it goes
if self.num_anims > 0:
self.mobject = self.scene_mobjects_at_time[0]
self.mobject.add(self.animations[0].mobject)
else:
self.mobject = Group()
Animation.__init__(self, self.mobject, run_time = run_time, **kwargs)
# Beware: This does NOT take care of calling update(0) on the subanimation.
# This was important to avoid a pernicious possibility in which subanimations were called
# with update twice, which could in turn call a sub-Succession with update four times,
# continuing exponentially.
def jump_to_start_of_anim(self, index):
if index != self.current_anim_index:
self.mobject.remove(*self.mobject.submobjects) # Should probably have a cleaner "remove_all" method...
self.mobject.add(*self.scene_mobjects_at_time[index].submobjects)
self.mobject.add(self.animations[index].mobject)
for i in range(index):
self.animations[i].update(1)
self.current_anim_index = index
self.current_alpha = self.critical_alphas[index]
def update_mobject(self, alpha):
if self.num_anims == 0:
# This probably doesn't matter for anything, but just in case,
# we want it in the future, we set current_alpha even in this case
self.current_alpha = alpha
return
gt_alpha_iter = it.ifilter(
lambda i : self.critical_alphas[i+1] >= alpha,
range(self.num_anims)
)
i = next(gt_alpha_iter, None)
if i == None:
# In this case, we assume what is happening is that alpha is 1.0,
# but that rounding error is causing us to overshoot the end of
# self.critical_alphas (which is also 1.0)
if not abs(alpha - 1) < 0.001:
warnings.warn(
"Rounding error not near alpha=1 in Succession.update_mobject," + \
"instead alpha = %f"%alpha
)
print self.critical_alphas, alpha
i = self.num_anims - 1
# At this point, we should have self.critical_alphas[i] <= alpha <= self.critical_alphas[i +1]
self.jump_to_start_of_anim(i)
sub_alpha = inverse_interpolate(
self.critical_alphas[i],
self.critical_alphas[i + 1],
alpha
)
self.animations[i].update(sub_alpha)
self.current_alpha = alpha
def clean_up(self, *args, **kwargs):
# We clean up as though we've played ALL animations, even if
# clean_up is called in middle of things
for anim in self.animations:
anim.clean_up(*args, **kwargs)
class AnimationGroup(Animation):
CONFIG = {
"rate_func" : None
}
def __init__(self, *sub_anims, **kwargs):
sub_anims = filter (lambda x : not(x.empty), sub_anims)
digest_config(self, locals())
self.update_config(**kwargs) # Handles propagation to self.sub_anims
if len(sub_anims) == 0:
self.empty = True
self.run_time = 0
else:
self.run_time = max([a.run_time for a in sub_anims])
everything = Mobject(*[a.mobject for a in sub_anims])
Animation.__init__(self, everything, **kwargs)
def update(self, alpha):
for anim in self.sub_anims:
anim.update(alpha * self.run_time / anim.run_time)
def clean_up(self, *args, **kwargs):
for anim in self.sub_anims:
anim.clean_up(*args, **kwargs)
def update_config(self, **kwargs):
Animation.update_config(self, **kwargs)
# If AnimationGroup is called with any configuration,
# it is propagated to the sub_animations
for anim in self.sub_anims:
anim.update_config(**kwargs)
class EmptyAnimation(Animation):
CONFIG = {
"run_time" : 0,
"empty" : True
}
def __init__(self, *args, **kwargs):
return Animation.__init__(self, Group(), *args, **kwargs)

228
animation/simple_animations.py
View file

@ -288,8 +288,6 @@ class WiggleOutThenIn(Animation):
about_point = self.rotate_about_point
)
### Animation modifiers ###
class ApplyToCenters(Animation):
def __init__(self, AnimationClass, mobjects, **kwargs):
full_kwargs = AnimationClass.CONFIG
@ -312,229 +310,3 @@ class ApplyToCenters(Animation):
center_mob.get_center()-mobject.get_center()
)
class LaggedStart(Animation):
CONFIG = {
"run_time" : 2,
"lag_ratio" : 0.5,
}
def __init__(self, AnimationClass, mobject, arg_creator = None, **kwargs):
digest_config(self, kwargs)
for key in "rate_func", "run_time", "lag_ratio":
if key in kwargs:
kwargs.pop(key)
if arg_creator is None:
arg_creator = lambda mobject : (mobject,)
self.subanimations = [
AnimationClass(
*arg_creator(submob),
run_time = self.run_time,
rate_func = squish_rate_func(
self.rate_func, beta, beta + self.lag_ratio
),
**kwargs
)
for submob, beta in zip(
mobject,
np.linspace(0, 1-self.lag_ratio, len(mobject))
)
]
Animation.__init__(self, mobject, **kwargs)
def update(self, alpha):
for anim in self.subanimations:
anim.update(alpha)
return self
def clean_up(self, *args, **kwargs):
for anim in self.subanimations:
anim.clean_up(*args, **kwargs)
class Succession(Animation):
CONFIG = {
"rate_func" : None,
}
def __init__(self, *args, **kwargs):
"""
Each arg will either be an animation, or an animation class
followed by its arguments (and potentially a dict for
configuration).
For example,
Succession(
ShowCreation(circle),
Transform, circle, square,
Transform, circle, triangle,
ApplyMethod, circle.shift, 2*UP, {"run_time" : 2},
)
"""
animations = []
state = {
"animations" : animations,
"curr_class" : None,
"curr_class_args" : [],
"curr_class_config" : {},
}
def invoke_curr_class(state):
if state["curr_class"] is None:
return
anim = state["curr_class"](
*state["curr_class_args"],
**state["curr_class_config"]
)
state["animations"].append(anim)
anim.update(1)
state["curr_class"] = None
state["curr_class_args"] = []
state["curr_class_config"] = {}
for arg in args:
if isinstance(arg, Animation):
animations.append(arg)
arg.update(1)
invoke_curr_class(state)
elif isinstance(arg, type) and issubclass(arg, Animation):
invoke_curr_class(state)
state["curr_class"] = arg
elif isinstance(arg, dict):
state["curr_class_config"] = arg
else:
state["curr_class_args"].append(arg)
invoke_curr_class(state)
for anim in animations:
anim.update(0)
animations = filter (lambda x : not(x.empty), animations)
self.run_times = [anim.run_time for anim in animations]
if "run_time" in kwargs:
run_time = kwargs.pop("run_time")
warnings.warn("Succession doesn't currently support explicit run_time.")
run_time = sum(self.run_times)
self.num_anims = len(animations)
if self.num_anims == 0:
self.empty = True
self.animations = animations
#Have to keep track of this run_time, because Scene.play
#might very well mess with it.
self.original_run_time = run_time
# critical_alphas[i] is the start alpha of self.animations[i]
# critical_alphas[i + 1] is the end alpha of self.animations[i]
critical_times = np.concatenate(([0], np.cumsum(self.run_times)))
self.critical_alphas = map (lambda x : np.true_divide(x, run_time), critical_times) if self.num_anims > 0 else [0.0]
# self.scene_mobjects_at_time[i] is the scene's mobjects at start of self.animations[i]
# self.scene_mobjects_at_time[i + 1] is the scene mobjects at end of self.animations[i]
self.scene_mobjects_at_time = [None for i in range(self.num_anims + 1)]
self.scene_mobjects_at_time[0] = Group()
for i in range(self.num_anims):
self.scene_mobjects_at_time[i + 1] = self.scene_mobjects_at_time[i].copy()
self.animations[i].clean_up(self.scene_mobjects_at_time[i + 1])
self.current_alpha = 0
self.current_anim_index = 0 # If self.num_anims == 0, this is an invalid index, but so it goes
if self.num_anims > 0:
self.mobject = self.scene_mobjects_at_time[0]
self.mobject.add(self.animations[0].mobject)
else:
self.mobject = Group()
Animation.__init__(self, self.mobject, run_time = run_time, **kwargs)
# Beware: This does NOT take care of calling update(0) on the subanimation.
# This was important to avoid a pernicious possibility in which subanimations were called
# with update twice, which could in turn call a sub-Succession with update four times,
# continuing exponentially.
def jump_to_start_of_anim(self, index):
if index != self.current_anim_index:
self.mobject.remove(*self.mobject.submobjects) # Should probably have a cleaner "remove_all" method...
self.mobject.add(*self.scene_mobjects_at_time[index].submobjects)
self.mobject.add(self.animations[index].mobject)
for i in range(index):
self.animations[i].update(1)
self.current_anim_index = index
self.current_alpha = self.critical_alphas[index]
def update_mobject(self, alpha):
if self.num_anims == 0:
# This probably doesn't matter for anything, but just in case,
# we want it in the future, we set current_alpha even in this case
self.current_alpha = alpha
return
gt_alpha_iter = it.ifilter(
lambda i : self.critical_alphas[i+1] >= alpha,
range(self.num_anims)
)
i = next(gt_alpha_iter, None)
if i == None:
# In this case, we assume what is happening is that alpha is 1.0,
# but that rounding error is causing us to overshoot the end of
# self.critical_alphas (which is also 1.0)
if not abs(alpha - 1) < 0.001:
warnings.warn(
"Rounding error not near alpha=1 in Succession.update_mobject," + \
"instead alpha = %f"%alpha
)
print self.critical_alphas, alpha
i = self.num_anims - 1
# At this point, we should have self.critical_alphas[i] <= alpha <= self.critical_alphas[i +1]
self.jump_to_start_of_anim(i)
sub_alpha = inverse_interpolate(
self.critical_alphas[i],
self.critical_alphas[i + 1],
alpha
)
self.animations[i].update(sub_alpha)
self.current_alpha = alpha
def clean_up(self, *args, **kwargs):
# We clean up as though we've played ALL animations, even if
# clean_up is called in middle of things
for anim in self.animations:
anim.clean_up(*args, **kwargs)
class AnimationGroup(Animation):
CONFIG = {
"rate_func" : None
}
def __init__(self, *sub_anims, **kwargs):
sub_anims = filter (lambda x : not(x.empty), sub_anims)
digest_config(self, locals())
self.update_config(**kwargs) # Handles propagation to self.sub_anims
if len(sub_anims) == 0:
self.empty = True
self.run_time = 0
else:
self.run_time = max([a.run_time for a in sub_anims])
everything = Mobject(*[a.mobject for a in sub_anims])
Animation.__init__(self, everything, **kwargs)
def update(self, alpha):
for anim in self.sub_anims:
anim.update(alpha * self.run_time / anim.run_time)
def clean_up(self, *args, **kwargs):
for anim in self.sub_anims:
anim.clean_up(*args, **kwargs)
def update_config(self, **kwargs):
Animation.update_config(self, **kwargs)
# If AnimationGroup is called with any configuration,
# it is propagated to the sub_animations
for anim in self.sub_anims:
anim.update_config(**kwargs)
class EmptyAnimation(Animation):
CONFIG = {
"run_time" : 0,
"empty" : True
}
def __init__(self, *args, **kwargs):
return Animation.__init__(self, Group(), *args, **kwargs)

1
eop/bayes.py
View file

@ -8,6 +8,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
eop/bayes_footnote.py
View file

@ -8,6 +8,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
eop/combinations.py
View file

@ -8,6 +8,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from animation.continual_animation import *
from topics.geometry import *

1
eop/independence.py
View file

@ -8,6 +8,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
example_scenes.py
View file

@ -15,6 +15,7 @@ from camera import Camera
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *

4
mobject/vectorized_mobject.py
View file

@ -165,6 +165,10 @@ class VMobject(Mobject):
def get_background_image_file(self):
return self.background_image_file
def match_background_image_file(self, vmobject):
self.color_using_background_image(vmobject.get_background_image_file())
return self
## Drawing
def start_at(self, point):
if len(self.points) == 0:

1
old_projects/256.py
View file

@ -8,6 +8,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
old_projects/basel/basel.py
View file

@ -10,6 +10,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.continual_animation import *
from animation.playground import *

1
old_projects/basel/basel2.py
View file

@ -11,6 +11,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.continual_animation import *
from animation.playground import *

1
old_projects/bell.py
View file

@ -8,6 +8,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
old_projects/borsuk.py
View file

@ -8,6 +8,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

3
old_projects/brachistochrone/curves.py
View file

@ -11,7 +11,8 @@ from topics.three_dimensions import Stars
from animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import TurnInsideOut, Vibrate
from topics.geometry import *
from topics.characters import Randolph, Mathematician

1
old_projects/brachistochrone/cycloid.py
View file

@ -12,6 +12,7 @@ from topics.three_dimensions import Stars
from animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from topics.geometry import *
from topics.characters import Randolph
from topics.functions import *

1
old_projects/brachistochrone/graveyard.py
View file

@ -12,6 +12,7 @@ from topics.three_dimensions import Stars
from animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import TurnInsideOut, Vibrate
from topics.geometry import *
from topics.characters import Randolph, Mathematician

1
old_projects/brachistochrone/light.py
View file

@ -12,6 +12,7 @@ from topics.three_dimensions import Stars
from animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import TurnInsideOut, Vibrate
from topics.geometry import *
from topics.characters import Randolph, Mathematician

1
old_projects/brachistochrone/misc.py
View file

@ -11,6 +11,7 @@ from topics.three_dimensions import Stars
from animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import TurnInsideOut, Vibrate
from topics.geometry import *
from topics.characters import *

1
old_projects/brachistochrone/multilayered.py
View file

@ -12,6 +12,7 @@ from topics.three_dimensions import Stars
from animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from topics.geometry import *
from topics.characters import Randolph
from topics.functions import *

1
old_projects/brachistochrone/wordplay.py
View file

@ -13,6 +13,7 @@ from topics.three_dimensions import Stars
from animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import TurnInsideOut, Vibrate
from topics.geometry import *
from topics.characters import Randolph, Mathematician

1
old_projects/crypto.py
View file

@ -8,6 +8,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
old_projects/domino_play.py
View file

@ -11,6 +11,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from animation.continual_animation import *
from topics.geometry import *

1
old_projects/efvgt.py
View file

@ -8,6 +8,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
old_projects/eoc/chapter1.py
View file

@ -8,6 +8,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
old_projects/eoc/chapter10.py
View file

@ -10,6 +10,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
old_projects/eoc/chapter2.py
View file

@ -8,6 +8,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
old_projects/eoc/chapter3.py
View file

@ -8,6 +8,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
old_projects/eoc/chapter4.py
View file

@ -8,6 +8,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
old_projects/eoc/chapter5.py
View file

@ -8,6 +8,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
old_projects/eoc/chapter6.py
View file

@ -8,6 +8,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
old_projects/eoc/chapter7.py
View file

@ -10,6 +10,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
old_projects/eoc/chapter8.py
View file

@ -9,6 +9,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
old_projects/eoc/chapter9.py
View file

@ -10,6 +10,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
old_projects/eoc/footnote.py
View file

@ -10,6 +10,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
old_projects/eoc/old_chapter1.py
View file

@ -8,6 +8,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
old_projects/eola/chapter0.py
View file

@ -6,6 +6,7 @@ from mobject.vectorized_mobject import VMobject
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
old_projects/eola/chapter1.py
View file

@ -6,6 +6,7 @@ from mobject.vectorized_mobject import VMobject
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
old_projects/eola/chapter10.py
View file

@ -6,6 +6,7 @@ from mobject.vectorized_mobject import VMobject
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from topics.geometry import *
from topics.characters import *
from topics.functions import *

1
old_projects/eola/chapter11.py
View file

@ -6,6 +6,7 @@ from mobject.vectorized_mobject import VMobject
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from topics.geometry import *
from topics.characters import *
from topics.functions import *

1
old_projects/eola/chapter2.py
View file

@ -6,6 +6,7 @@ from mobject.vectorized_mobject import VMobject
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from topics.geometry import *
from topics.characters import *
from topics.functions import *

1
old_projects/eola/chapter3.py
View file

@ -6,6 +6,7 @@ from mobject.vectorized_mobject import VMobject
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from topics.geometry import *
from topics.characters import *
from topics.functions import *

1
old_projects/eola/chapter4.py
View file

@ -6,6 +6,7 @@ from mobject.vectorized_mobject import VMobject
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from topics.geometry import *
from topics.characters import *
from topics.functions import *

1
old_projects/eola/chapter5.py
View file

@ -6,6 +6,7 @@ from mobject.vectorized_mobject import VMobject
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from topics.geometry import *
from topics.characters import *
from topics.functions import *

1
old_projects/eola/chapter6.py
View file

@ -6,6 +6,7 @@ from mobject.vectorized_mobject import VMobject
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from topics.geometry import *
from topics.characters import *
from topics.functions import *

1
old_projects/eola/chapter7.py
View file

@ -6,6 +6,7 @@ from mobject.vectorized_mobject import VMobject
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from topics.geometry import *
from topics.characters import *
from topics.functions import *

1
old_projects/eola/chapter8.py
View file

@ -6,6 +6,7 @@ from mobject.vectorized_mobject import VMobject
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from topics.geometry import *
from topics.characters import *
from topics.functions import *

1
old_projects/eola/chapter8p2.py
View file

@ -6,6 +6,7 @@ from mobject.vectorized_mobject import VMobject
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from topics.geometry import *
from topics.characters import *
from topics.functions import *

1
old_projects/eola/chapter9.py
View file

@ -6,6 +6,7 @@ from mobject.vectorized_mobject import VMobject
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from topics.geometry import *
from topics.characters import *
from topics.functions import *

1
old_projects/eola/footnote.py
View file

@ -6,6 +6,7 @@ from mobject.vectorized_mobject import VMobject
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from topics.geometry import *
from topics.characters import *
from topics.functions import *

1
old_projects/eola/footnote2.py
View file

@ -6,6 +6,7 @@ from mobject.vectorized_mobject import VMobject
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from topics.geometry import *
from topics.characters import *
from topics.functions import *

1
old_projects/eola/thumbnails.py
View file

@ -6,6 +6,7 @@ from mobject.vectorized_mobject import VMobject
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from topics.geometry import *
from topics.characters import *
from topics.functions import *

1
old_projects/fourier.py
View file

@ -5,6 +5,7 @@ import scipy
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from animation.continual_animation import *
from topics.geometry import *

1
old_projects/fractal_charm.py
View file

@ -8,6 +8,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
old_projects/fractal_dimension.py
View file

@ -8,6 +8,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
old_projects/hanoi.py
View file

@ -9,6 +9,7 @@ from mobject.point_cloud_mobject import Mobject1D
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
old_projects/highD.py
View file

@ -8,6 +8,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
old_projects/leibniz.py
View file

@ -8,6 +8,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
old_projects/mug.py
View file

@ -11,6 +11,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from animation.continual_animation import *
from topics.geometry import *

1
old_projects/nn/part1.py
View file

@ -13,6 +13,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from animation.continual_animation import *
from topics.geometry import *

1
old_projects/nn/part2.py
View file

@ -12,6 +12,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from animation.continual_animation import *
from topics.geometry import *

1
old_projects/nn/playground.py
View file

@ -15,6 +15,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from animation.continual_animation import *
from topics.geometry import *

1
old_projects/patreon.py
View file

@ -8,6 +8,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
old_projects/putnam.py
View file

@ -8,6 +8,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from animation.continual_animation import *
from topics.geometry import *

1
old_projects/qa_round_two.py
View file

@ -11,6 +11,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from animation.continual_animation import *
from topics.geometry import *

1
old_projects/tattoo.py
View file

@ -8,6 +8,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
old_projects/triangle_of_power/end.py
View file

@ -6,6 +6,7 @@ from mobject import Mobject
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
old_projects/triangle_of_power/intro.py
View file

@ -6,6 +6,7 @@ from mobject import Mobject
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
old_projects/triangle_of_power/triangle.py
View file

@ -8,6 +8,7 @@ from mobject import Mobject
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
old_projects/triples.py
View file

@ -9,6 +9,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
old_projects/uncertainty.py
View file

@ -6,6 +6,7 @@ import scipy
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from animation.continual_animation import *
from topics.geometry import *

1
old_projects/waves.py
View file

@ -8,6 +8,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.continual_animation import *
from animation.playground import *
from topics.geometry import *

1
old_projects/wcat.py
View file

@ -8,6 +8,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

1
old_projects/zeta.py
View file

@ -8,6 +8,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.playground import *
from topics.geometry import *
from topics.characters import *

22
topics/characters.py
View file

@ -10,7 +10,8 @@ from topics.geometry import ScreenRectangle
from animation import Animation
from animation.transform import *
from animation.simple_animations import Write, ShowCreation, AnimationGroup
from animation.simple_animations import Write, ShowCreation
from animation.compositions import AnimationGroup
from scene import Scene
@ -389,25 +390,28 @@ class PiCreatureScene(Scene):
"total_wait_time" : 0,
"seconds_to_blink" : 3,
"pi_creatures_start_on_screen" : True,
"default_pi_creature_kwargs" : {},
"default_pi_creature_class" : Mortimer,
"default_pi_creature_kwargs" : {
"color" : GREY_BROWN,
"flip_at_start" : True,
},
"default_pi_creature_start_corner" : DOWN+LEFT,
}
def setup(self):
self.pi_creatures = VGroup(
*self.create_pi_creatures(**self.default_pi_creature_kwargs)
)
self.pi_creatures = self.create_pi_creatures()
self.pi_creature = self.get_primary_pi_creature()
if self.pi_creatures_start_on_screen:
self.add(*self.pi_creatures)
def create_pi_creatures(self):
"""
Likely updated for subclasses
Likely updated for subclasses
"""
return VGroup(self.create_pi_creature(**self.default_pi_creature_kwargs))
return VGroup(self.create_pi_creature())
def create_pi_creature(self):
return self.default_pi_creature_class(**self.default_pi_creature_kwargs).to_corner(DOWN+RIGHT)
pi_creature = PiCreature(**self.default_pi_creature_kwargs)
pi_creature.to_corner(self.default_pi_creature_start_corner)
return pi_creature
def get_pi_creatures(self):
return self.pi_creatures

1
topics/light.py
View file

@ -7,6 +7,7 @@ from mobject.vectorized_mobject import *
from animation.animation import Animation
from animation.transform import *
from animation.simple_animations import *
from animation.compositions import *
from animation.continual_animation import *
from animation.playground import *

3
topics/objects.py
View file

@ -6,7 +6,8 @@ from mobject.svg_mobject import SVGMobject
from mobject.tex_mobject import TextMobject, TexMobject, Brace
from animation import Animation
from animation.simple_animations import Rotating, LaggedStart, AnimationGroup
from animation.simple_animations import Rotating
from animation.compositions import LaggedStart, AnimationGroup
from animation.transform import ApplyMethod, FadeIn, GrowFromCenter
from topics.geometry import Circle, Line, Rectangle, Square, \