def __init__(self, file_name=None, **kwargs):
Container.__init__(self, **kwargs)
self.file_name = file_name or self.file_name
self.ensure_valid_file()
self.style = self.style.lower()
self.gen_html_string()
strati = self.html_string.find("background:")
self.background_color = self.html_string[strati + 12:strati + 19]
self.gen_code_json()
self.code = self.gen_colored_lines()
if self.insert_line_no:
self.line_numbers = self.gen_line_numbers()
self.line_numbers.next_to(self.code, direction=LEFT, buff=self.line_no_buff)
if self.background == "rectangle":
if self.insert_line_no:
forground = VGroup(self.code, self.line_numbers)
else:
forground = self.code
self.background_mobject = SurroundingRectangle(forground, buff=self.margin,
color=self.background_color,
fill_color=self.background_color,
stroke_width=0,
fill_opacity=1, )
self.background_mobject.round_corners(self.corner_radius)
else:
if self.insert_line_no:
forground = VGroup(self.code, self.line_numbers)
else:
forground = self.code
height = forground.get_height() + 0.1 * 3 + 2 * self.margin
width = forground.get_width() + 0.1 * 3 + 2 * self.margin
rrect = RoundedRectangle(corner_radius=self.corner_radius, height=height, width=width,
stroke_width=0,
color=self.background_color, fill_opacity=1)
button_radius = 0.09
red_button = Dot(radius=button_radius, stroke_width=0, color='#ff5f56')
red_button.shift(LEFT * button_radius * 3)
yellow_button = Dot(radius=button_radius, stroke_width=0, color='#ffbd2e')
green_button = Dot(radius=button_radius, stroke_width=0, color='#27c93f')
green_button.shift(RIGHT * button_radius * 3)
buttons = VGroup(red_button, yellow_button, green_button)
buttons.shift(
UP * (height / 2 - 0.1 * 2 - 0.05) + LEFT * (width / 2 - 0.1 * 5 - self.corner_radius / 2 - 0.05))
self.background_mobject = VGroup(rrect, buttons)
x = (height - forground.get_height()) / 2 - 0.1 * 3
self.background_mobject.shift(forground.get_center())
self.background_mobject.shift(UP * x)
if self.insert_line_no:
VGroup.__init__(self, self.background_mobject, self.line_numbers, *self.code, **kwargs)
else:
VGroup.__init__(self, self.background_mobject, Dot(fill_opacity=0, stroke_opacity=0), *self.code, **kwargs)
self.move_to(np.array([0, 0, 0]))
def apply_space_chars(self):
char_index = 0
while char_index < self.text.__len__() - 1:
char_index += 1
if self.text[char_index] == " " or self.text[char_index] == "\t" or self.text[char_index] == "\n":
space = Dot(fill_opacity=0, stroke_opacity=0)
space.move_to(self.submobjects[char_index - 1].get_center())
self.submobjects.insert(char_index, space)
def apply_space_chars(self):
submobs = self.submobjects.copy()
for char_index in range(len(self.text)):
if self.text[char_index] in [" ", "\t", "\n"]:
space = Dot(radius=0, fill_opacity=0, stroke_opacity=0)
space.move_to(submobs[max(char_index - 1, 0)].get_center())
submobs.insert(char_index, space)
self.set_submobjects(submobs)
def __init__(self, init_loc=ORIGIN, **kwargs):
VGroup.__init__(self, **kwargs)
self.point = Dot(init_loc, color=self.point_color).set_height(self.size)
self.value_x = DecimalNumber(0, color=self.coordinates_color, num_decimal_places=self.num_decimal_places).scale(self.coordinates_scale)
self.value_y = DecimalNumber(0, color=self.coordinates_color, num_decimal_places=self.num_decimal_places).scale(self.coordinates_scale)
text = TexMobject('(', ',', ')').scale(self.coordinates_scale)
self.coordinates_text = VGroup(text[0], self.value_x, text[1], self.value_y, text[2])
self.coordinates_text.add_updater(self.update_coordinates_text)
self.add(self.point)
def add_bases(self):
self.base_top = Dot(
point=self.u_max * IN,
radius=self.radius,
color=self.fill_color,
fill_opacity=self.fill_opacity,
)
self.base_bottom = Dot(
point=self.u_min * IN,
radius=self.radius,
color=self.fill_color,
fill_opacity=self.fill_opacity,
)
self.add(self.base_top, self.base_bottom)
def create_starting_mobject(self):
return Dot(
radius=FRAME_X_RADIUS + FRAME_Y_RADIUS,
stroke_width=0,
fill_color=self.color,
fill_opacity=0,
)
class Tracked_Point(VGroup):
CONFIG = {
'size': 0.1,
'point_color': BLUE,
'num_decimal_places': 2,
'coordinates_scale': 0.8,
'coordinates_color': GREEN,
'coordinates_direction': DOWN * 0.25,
'bracket_color': WHITE,
}
def __init__(self, init_loc=ORIGIN, **kwargs):
VGroup.__init__(self, **kwargs)
self.point = Dot(init_loc, color=self.point_color).set_height(self.size)
self.value_x = DecimalNumber(0, color=self.coordinates_color, num_decimal_places=self.num_decimal_places).scale(self.coordinates_scale)
self.value_y = DecimalNumber(0, color=self.coordinates_color, num_decimal_places=self.num_decimal_places).scale(self.coordinates_scale)
text = TexMobject('(', ',', ')').scale(self.coordinates_scale)
self.coordinates_text = VGroup(text[0], self.value_x, text[1], self.value_y, text[2])
self.coordinates_text.add_updater(self.update_coordinates_text)
self.add(self.point)
def update_coordinates_text(self, coords):
for i in range(1, len(coords)):
coords[i].next_to(coords[i-1], RIGHT * 0.5)
coords[2].align_to(coords[1], DOWN)
pos = self.point.get_center()
x, y = self.mapping_func(pos[0], pos[1])
coords[1].set_value(x)
coords[3].set_value(y)
coords.next_to(self.point, self.coordinates_direction)
def mapping_func(self, x, y):
return x, y
def show_ghost_movement(self, vector):
"""
This method plays an animation that partially shows the entire plane moving
in the direction of a particular vector. This is useful when you wish to
convey the idea of mentally moving the entire plane in a direction, without
actually moving the plane.
Parameters
----------
vector (Union[Arrow, list, tuple, np.ndarray])
The vector which indicates the direction of movement.
"""
if isinstance(vector, Arrow):
vector = vector.get_end() - vector.get_start()
elif len(vector) == 2:
vector = np.append(np.array(vector), 0.0)
x_max = int(FRAME_X_RADIUS + abs(vector[0]))
y_max = int(FRAME_Y_RADIUS + abs(vector[1]))
dots = VMobject(*[
Dot(x * RIGHT + y * UP) for x in range(-x_max, x_max)
for y in range(-y_max, y_max)
])
dots.set_fill(BLACK, opacity=0)
dots_halfway = dots.copy().shift(vector / 2).set_fill(WHITE, 1)
dots_end = dots.copy().shift(vector)
self.play(Transform(dots, dots_halfway, rate_func=rush_into))
self.play(Transform(dots, dots_end, rate_func=rush_from))
self.remove(dots)
def apply_space_chars(self):
indexes = self.find_indexes(' ') + self.find_indexes('\n')
indexes = sorted(indexes, key=lambda i: i[0])
if len(self.text) == len(indexes):
space = Dot(fill_opacity=0, stroke_opacity=0)
self.submobjects = [space.copy() for _ in range(len(indexes))]
return
for start, _ in indexes:
space = Dot(fill_opacity=0, stroke_opacity=0)
if start == 0:
space.move_to(self.submobjects[0].get_center())
else:
space.move_to(self.submobjects[start - 1].get_center())
self.submobjects.insert(start, space)
def generate_mobject(self):
super().generate_mobject()
# Remove empty paths
submobjects = list(filter(lambda submob: submob.has_points(), self))
# Apply space characters
if self.apply_space_chars:
content_str = self.parser.remove_tags(self.text)
if self.is_markup:
content_str = saxutils.unescape(content_str)
for char_index, char in enumerate(content_str):
if not re.match(r"\s", char):
continue
space = Dot(radius=0, fill_opacity=0, stroke_opacity=0)
space.move_to(submobjects[max(char_index - 1, 0)].get_center())
submobjects.insert(char_index, space)
self.set_submobjects(submobjects)
def construct(self):
dot = Dot()
text = TextMobject("Label") \
.next_to(dot, RIGHT, buff=SMALL_BUFF)
self.add(dot, text)
self.play(dot.shift, UP * 2)
self.wait()
def increment(self, run_time_per_anim=1):
moving_dot = Dot(
self.counting_dot_starting_position,
radius=self.count_dot_starting_radius,
color=self.digit_place_colors[0],
)
moving_dot.generate_target()
moving_dot.set_fill(opacity=0)
kwargs = {
"run_time": run_time_per_anim
}
continue_rolling_over = True
first_move = True
place = 0
while continue_rolling_over:
added_anims = []
if first_move:
added_anims += self.get_digit_increment_animations()
first_move = False
moving_dot.target.replace(
next(self.dot_template_iterators[place])
)
self.play(MoveToTarget(moving_dot), *added_anims, **kwargs)
self.curr_configurations[place].add(moving_dot)
if len(self.curr_configurations[place].split()) == self.get_place_max(place):
full_configuration = self.curr_configurations[place]
self.curr_configurations[place] = VGroup()
place += 1
center = full_configuration.get_center_of_mass()
radius = 0.6 * max(
full_configuration.get_width(),
full_configuration.get_height(),
)
circle = Circle(
radius=radius,
stroke_width=0,
fill_color=self.digit_place_colors[place],
fill_opacity=0.5,
)
circle.move_to(center)
moving_dot = VGroup(circle, full_configuration)
moving_dot.generate_target()
moving_dot[0].set_fill(opacity=0)
else:
continue_rolling_over = False
def construct(self):
obj = SVGMobject("dvsv").scale(3)
points = VGroup(*[
Dot(obj.point_from_proportion(alpha))
for alpha in np.linspace(0, 1, 33)
])
self.add(obj)
self.add(points)
self.wait()
def __init__(self, *vertices, **kwargs):
VGroup.__init__(self, **kwargs)
self.lines, self.dots = VGroup(plot_depth=1), VGroup(plot_depth=1)
self.poly=Polygon(*vertices, fill_color=self.fill_color, fill_opacity=self.fill_opacity, plot_depth=0).set_stroke(width=0)
self.add(self.lines, self.dots, self.poly)
n = len(vertices)
for i in range(n):
self.lines.add(Line(vertices[i], vertices[(i+1) % n], color=self.stroke_color,
stroke_width=self.stroke_width, plot_depth=2))
self.dots.add(Dot(vertices[i], color=self.stroke_color, plot_depth=2).set_height(self.stroke_width/100))
def __init__(self, **kwargs):
VGroup.__init__(self, **kwargs)
self.color_list = color_gradient(self.colors, self.layer_num)
self.add(Dot(color=average_color(self.colors[0], WHITE), plot_depth=4).set_height(0.015 * self.radius))
for i in range(self.layer_num):
# self.add(Arc(radius= self.radius/self.layer_num * (0.5 + i), angle=TAU, color=self.color_list[i],
# stroke_width=100 * self.radius/self.layer_num,
# stroke_opacity=self.opacity_func(i/self.layer_num), plot_depth=5))
self.add(Arc(radius= self.radius * self.rate_func((0.5 + i)/self.layer_num), angle=TAU, color=self.color_list[i],
stroke_width=101 * (self.rate_func((i + 1)/self.layer_num) - self.rate_func(i/self.layer_num)) * self.radius,
stroke_opacity=self.opacity_func(self.rate_func(i/self.layer_num)), plot_depth=5))
def create_target(self):
little_dot = Dot(radius=0)
little_dot.set_fill(self.color, opacity=self.opacity)
little_dot.add_updater(
lambda d: d.move_to(self.focus_point)
)
return little_dot
def get_dot_template(self, place):
# This should be replaced for non-base-10 counting scenes
dots = VGroup(*[
Dot(
point,
radius=0.25,
fill_opacity=0,
stroke_width=2,
stroke_color=WHITE,
) for point in self.get_template_configuration(place)
])
dots.set_height(self.dot_configuration_height)
return dots
def construct(self):
dot = Dot()
text = TextMobject("Label") \
.next_to(dot, RIGHT, buff=SMALL_BUFF)
self.add(dot, text)
def update_text(obj):
obj.next_to(dot, RIGHT, buff=SMALL_BUFF)
# Only works in play
self.play(dot.shift, UP * 2, UpdateFromFunc(text, update_text))
self.wait()
def apply_space_chars(self):
for char_index in range(self.text.__len__()):
if self.text[char_index] == " " or self.text[char_index] == "\t" or self.text[char_index] == "\n":
space = Dot(redius=0, fill_opacity=0, stroke_opacity=0)
if char_index == 0:
space.move_to(self.submobjects[char_index].get_center())
else:
space.move_to(self.submobjects[char_index - 1].get_center())
self.submobjects.insert(char_index, space)
def increment(self, run_time_per_anim=1):
moving_dot = Dot(
self.counting_dot_starting_position,
radius=self.count_dot_starting_radius,
color=self.digit_place_colors[0],
)
moving_dot.generate_target()
moving_dot.set_fill(opacity=0)
kwargs = {
"run_time": run_time_per_anim
}
continue_rolling_over = True
first_move = True
place = 0
while continue_rolling_over:
added_anims = []
if first_move:
added_anims += self.get_digit_increment_animations()
first_move = False
moving_dot.target.replace(
next(self.dot_template_iterators[place])
)
self.play(MoveToTarget(moving_dot), *added_anims, **kwargs)
self.curr_configurations[place].add(moving_dot)
if len(self.curr_configurations[place].split()) == self.get_place_max(place):
full_configuration = self.curr_configurations[place]
self.curr_configurations[place] = VGroup()
place += 1
center = full_configuration.get_center_of_mass()
radius = 0.6 * max(
full_configuration.get_width(),
full_configuration.get_height(),
)
circle = Circle(
radius=radius,
stroke_width=0,
fill_color=self.digit_place_colors[place],
fill_opacity=0.5,
)
circle.move_to(center)
moving_dot = VGroup(circle, full_configuration)
moving_dot.generate_target()
moving_dot[0].set_fill(opacity=0)
else:
continue_rolling_over = False
def __init__(self, mobject_or_point, **kwargs):
digest_config(self, kwargs)
big_dot = Dot(
radius=FRAME_X_RADIUS + FRAME_Y_RADIUS,
stroke_width=0,
fill_color=self.color,
fill_opacity=0,
)
little_dot = Dot(radius=0)
little_dot.set_fill(self.color, opacity=self.opacity)
little_dot.move_to(mobject_or_point)
Transform.__init__(self, big_dot, little_dot, **kwargs)
def __init__(self, **kwargs):
ParametricSurface.__init__(self, self.func, **kwargs)
# used for rotations
self._current_theta = 0
self._current_phi = 0
if self.show_base:
self.base_circle = Dot(
point=self.height * IN,
radius=self.base_radius,
color=self.fill_color,
fill_opacity=self.fill_opacity,
)
self.add(self.base_circle)
self._rotate_to_direction()
def show_ghost_movement(self, vector):
if isinstance(vector, Arrow):
vector = vector.get_end() - vector.get_start()
elif len(vector) == 2:
vector = np.append(np.array(vector), 0.0)
x_max = int(FRAME_X_RADIUS + abs(vector[0]))
y_max = int(FRAME_Y_RADIUS + abs(vector[1]))
dots = VMobject(*[
Dot(x * RIGHT + y * UP) for x in range(-x_max, x_max)
for y in range(-y_max, y_max)
])
dots.set_fill(BLACK, opacity=0)
dots_halfway = dots.copy().shift(vector / 2).set_fill(WHITE, 1)
dots_end = dots.copy().shift(vector)
self.play(Transform(dots, dots_halfway, rate_func=rush_into))
self.play(Transform(dots, dots_end, rate_func=rush_from))
self.remove(dots)
def construct(self):
dot = Dot()
text = TextMobject("Label") \
.next_to(dot, RIGHT, buff=SMALL_BUFF)
self.add(dot, text)
# Add update function to the objects
text.add_updater(lambda m: m.next_to(dot, RIGHT, buff=SMALL_BUFF))
# Add the object again
self.add(text)
self.play(dot.shift, UP * 2)
# Remove update function
text.clear_updaters()
self.wait()
def scatter(self,
x,
y,
size=None,
color=None,
fill_opacity=None,
stroke_width=None,
**kwargs):
if color is None:
color = it.cycle([next(self.default_graph_colors_cycle)])
else:
if is_sequence(color):
color = it.cycle(color)
else:
color = it.cycle([color])
if size is None:
size = self.default_dot_radius
if fill_opacity is None:
fill_opacity = self.default_dot_opacity
if stroke_width is None:
stroke_width = self.default_dot_stroke_width
scatter_sequence = VGroup()
for i in range(len(y)):
point = self.coords_to_point(x[i], y[i])
dot = Dot(
color=next(color),
radius=size,
fill_opacity=fill_opacity,
stroke_width=stroke_width,
**kwargs,
).move_to(point)
scatter_sequence.add(dot)
if hasattr(self, "scatter_sequences") is False:
self.scatter_sequences = VGroup()
self.scatter_sequences.add(scatter_sequence)
self.add(self.scatter_sequences)
return scatter_sequence
def construct(self):
circle = Circle(color=YELLOW).scale(self.radius)
points = []
lines = []
for point in range(self.points):
start_angle = (point / self.points) * 2 * np.pi
start_point = (RIGHT * np.cos(start_angle) + UP * np.sin(start_angle)) * self.radius
points.append(start_point)
stop_angle = (point + point * self.step) / self.points * 2 * np.pi
stop_point = (RIGHT * np.cos(stop_angle) + UP * np.sin(stop_angle)) * self.radius
lines.append(Line(start_point, stop_point, **self.line_config))
self.play(ShowCreation(circle))
self.wait()
points_group = VGroup(*[Dot(point, **self.dot_config) for point in points])
lines_group = VGroup(*lines)
# self.play(ShowCreation(points_group), run_time=2)
self.play(ShowCreation(lines_group), run_time=10, rate_func=linear)
self.wait()
def construct(self):
dot = Dot()
text = TextMobject("Label") \
.next_to(dot, RIGHT, buff=SMALL_BUFF)
self.add(dot, text)
# Update function
def update_text(obj):
obj.next_to(dot, RIGHT, buff=SMALL_BUFF)
# Add update function to the objects
text.add_updater(update_text)
# Add the object again
self.add(text)
self.play(dot.shift, UP * 2)
# Remove update function
text.remove_updater(update_text)
self.wait()
def gen_chars(self):
chars = VGroup()
submobjects_char_index = 0
for char_index in range(self.text.__len__()):
if self.text[char_index] == " " or self.text[
char_index] == "\t" or self.text[char_index] == "\n":
space = Dot(redius=0, fill_opacity=0, stroke_opacity=0)
if char_index == 0:
space.move_to(
self.submobjects[submobjects_char_index].get_center())
else:
space.move_to(self.submobjects[submobjects_char_index -
1].get_center())
chars.add(space)
else:
chars.add(self.submobjects[submobjects_char_index])
submobjects_char_index += 1
return chars
def panel_opener_on_mouse_drag(self, mob, event_data):
point = event_data["point"]
self.panel_opener.match_y(Dot(point))
self.move_panel_and_controls_to_panel_opener()
return False
def panel_opener_on_mouse_drag(self, mob, event_data: dict[str, np.ndarray]) -> bool:
point = event_data["point"]
self.panel_opener.match_y(Dot(point))
self.move_panel_and_controls_to_panel_opener()
return False
def panel_opener_on_mouse_drag(self, point, d_point, buttons, modifiers):
self.panel_opener.match_y(Dot(point))
self.move_panel_and_controls_to_panel_opener()
return False