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39 lines
1.2 KiB
Python
39 lines
1.2 KiB
Python
from manimlib.animation.animation import Animation
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from manimlib.mobject.numbers import DecimalNumber
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from manimlib.utils.bezier import interpolate
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class ChangingDecimal(Animation):
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CONFIG = {
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"suspend_mobject_updating": False,
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}
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def __init__(self, decimal_mob, number_update_func, **kwargs):
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assert(isinstance(decimal_mob, DecimalNumber))
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self.number_update_func = number_update_func
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super().__init__(decimal_mob, **kwargs)
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def interpolate_mobject(self, alpha):
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self.mobject.set_value(
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self.number_update_func(alpha)
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)
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class ChangeDecimalToValue(ChangingDecimal):
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def __init__(self, decimal_mob, target_number, **kwargs):
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start_number = decimal_mob.number
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super().__init__(
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decimal_mob,
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lambda a: interpolate(start_number, target_number, a),
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**kwargs
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)
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class CountInFrom(ChangingDecimal):
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def __init__(self, decimal_mob, source_number=0, **kwargs):
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start_number = decimal_mob.number
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super().__init__(
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decimal_mob,
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lambda a: interpolate(source_number, start_number, a),
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**kwargs
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)
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