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75 lines
2.1 KiB
Python
75 lines
2.1 KiB
Python
from __future__ import annotations
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from manimlib.animation.animation import Animation
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from manimlib.constants import ORIGIN, OUT
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from manimlib.constants import PI, TAU
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from manimlib.utils.rate_functions import linear
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from manimlib.utils.rate_functions import smooth
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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 typing import Callable
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from manimlib.mobject.mobject import Mobject
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class Rotating(Animation):
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def __init__(
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self,
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mobject: Mobject,
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angle: float = TAU,
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axis: np.ndarray = OUT,
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about_point: np.ndarray | None = None,
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about_edge: np.ndarray | None = None,
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run_time: float = 5.0,
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rate_func: Callable[[float], float] = linear,
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suspend_mobject_updating: bool = False,
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**kwargs
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):
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self.angle = angle
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self.axis = axis
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self.about_point = about_point
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self.about_edge = about_edge
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super().__init__(
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mobject,
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run_time=run_time,
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rate_func=rate_func,
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suspend_mobject_updating=suspend_mobject_updating,
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**kwargs
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)
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def interpolate_mobject(self, alpha: float) -> None:
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pairs = zip(
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self.mobject.family_members_with_points(),
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self.starting_mobject.family_members_with_points(),
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)
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for sm1, sm2 in pairs:
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for key in sm1.pointlike_data_keys:
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sm1.data[key][:] = sm2.data[key]
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self.mobject.rotate(
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self.rate_func(alpha) * self.angle,
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axis=self.axis,
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about_point=self.about_point,
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about_edge=self.about_edge,
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)
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class Rotate(Rotating):
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def __init__(
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self,
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mobject: Mobject,
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angle: float = PI,
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axis: np.ndarray = OUT,
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run_time: float = 1,
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rate_func: Callable[[float], float] = smooth,
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about_edge: np.ndarray = ORIGIN,
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**kwargs
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):
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super().__init__(
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mobject, angle, axis,
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run_time=run_time,
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rate_func=rate_func,
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about_edge=about_edge,
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**kwargs
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)
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