2021-01-01 20:10:38 -08:00
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from manim_imports_ext import *
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2020-12-31 13:05:22 -08:00
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class Birthday(Scene):
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def construct(self):
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sidelength = 6.0
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corner = np.array([-sidelength/2,-sidelength/2,0])
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nb_days_left = 365.0
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toggle = False
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def probability():
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width = rect.get_width()
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height = rect.get_height()
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return width * height / sidelength**2
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rect = Square().scale(sidelength/2)
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while probability() > 0.5:
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self.add(rect.copy())
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nb_days_left -= 1
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if toggle:
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dim = 0
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else:
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dim = 1
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rect.stretch_about_point(nb_days_left / 365, dim, corner)
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toggle = not toggle
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