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55 lines
1.6 KiB
Python
55 lines
1.6 KiB
Python
from __future__ import annotations
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from manimlib.animation.composition import LaggedStart
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from manimlib.animation.transform import Restore
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from manimlib.constants import BLACK, WHITE
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from manimlib.mobject.geometry import Circle
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from manimlib.mobject.types.vectorized_mobject import VGroup
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from typing import TYPE_CHECKING
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if TYPE_CHECKING:
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import numpy as np
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from manimlib.typing import ManimColor
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class Broadcast(LaggedStart):
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def __init__(
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self,
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focal_point: np.ndarray,
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small_radius: float = 0.0,
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big_radius: float = 5.0,
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n_circles: int = 5,
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start_stroke_width: float = 8.0,
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color: ManimColor = WHITE,
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run_time: float = 3.0,
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lag_ratio: float = 0.2,
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remover: bool = True,
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**kwargs
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):
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self.focal_point = focal_point
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self.small_radius = small_radius
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self.big_radius = big_radius
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self.n_circles = n_circles
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self.start_stroke_width = start_stroke_width
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self.color = color
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circles = VGroup()
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for x in range(n_circles):
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circle = Circle(
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radius=big_radius,
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stroke_color=BLACK,
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stroke_width=0,
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)
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circle.add_updater(lambda c: c.move_to(focal_point))
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circle.save_state()
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circle.set_width(small_radius * 2)
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circle.set_stroke(color, start_stroke_width)
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circles.add(circle)
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super().__init__(
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*map(Restore, circles),
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run_time=run_time,
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lag_ratio=lag_ratio,
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remover=remover,
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**kwargs
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)
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