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141 lines
4.5 KiB
Python
141 lines
4.5 KiB
Python
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from big_ol_pile_of_manim_imports import *
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from active_projects.eop.reusable_imports import *
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class WeatherForecast(PiCreatureScene):
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CONFIG = {
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"default_pi_creature_kwargs": {
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"color": MAROON_E,
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"flip_at_start": False,
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},
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}
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def construct(self):
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unit_rect = Rectangle(
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height = 4, width = 4
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)
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p_rain = 0.23
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p_sun = 1 - p_rain
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opacity = 0.7
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rain_rect = unit_rect.copy().stretch(p_rain, 0)
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rain_rect.align_to(unit_rect, LEFT)
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rain_rect.set_fill(color = BLUE, opacity = opacity)
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rain_rect.set_stroke(width = 0)
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sun_rect = unit_rect.copy().stretch(p_sun, 0)
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sun_rect.next_to(rain_rect, RIGHT, buff = 0)
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sun_rect.set_fill(color = YELLOW, opacity = opacity)
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sun_rect.set_stroke(width = 0)
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self.add(unit_rect, rain_rect, sun_rect)
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rain = SVGMobject(file_name = "rain").scale(0.35)
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sun = SVGMobject(file_name = "sun").scale(0.35)
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rain.flip().move_to(rain_rect)
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sun.move_to(sun_rect)
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self.add(rain, sun)
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text_scale = 0.7
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brace_rain = Brace(rain_rect, UP)
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p_rain_label = TextMobject("$p($rain$)=$").scale(text_scale)
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p_rain_decimal = DecimalNumber(p_rain).scale(text_scale)
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p_rain_decimal.next_to(p_rain_label)
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p_rain_whole_label = VGroup(p_rain_label, p_rain_decimal)
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p_rain_whole_label.next_to(brace_rain, UP)
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brace_sun = Brace(sun_rect, DOWN)
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p_sun_label = TextMobject("$p($sun$)=$").scale(text_scale)
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p_sun_decimal = DecimalNumber(p_sun).scale(text_scale)
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p_sun_decimal.next_to(p_sun_label)
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p_sun_whole_label = VGroup(p_sun_label, p_sun_decimal)
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p_sun_whole_label.next_to(brace_sun, DOWN)
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self.add(brace_rain, p_rain_whole_label, brace_sun, p_sun_whole_label)
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new_p_rain = 0.68
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new_p_sun = 1 - new_p_rain
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new_rain_rect = unit_rect.copy().stretch(new_p_rain, 0)
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new_rain_rect.align_to(unit_rect, LEFT)
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new_rain_rect.set_fill(color = BLUE, opacity = opacity)
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new_rain_rect.set_stroke(width = 0)
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new_sun_rect = unit_rect.copy().stretch(new_p_sun, 0)
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new_sun_rect.next_to(new_rain_rect, RIGHT, buff = 0)
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new_sun_rect.set_fill(color = YELLOW, opacity = opacity)
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new_sun_rect.set_stroke(width = 0)
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new_rain = SVGMobject(file_name = "rain").scale(0.35)
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new_sun = SVGMobject(file_name = "sun").scale(0.35)
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new_rain.flip().move_to(new_rain_rect)
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new_sun.move_to(new_sun_rect)
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new_brace_rain = Brace(new_rain_rect, UP)
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new_p_rain_label = TextMobject("$p($rain$)=$").scale(text_scale)
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new_p_rain_decimal = DecimalNumber(new_p_rain).scale(text_scale)
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new_p_rain_decimal.next_to(new_p_rain_label)
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new_p_rain_whole_label = VGroup(new_p_rain_label, new_p_rain_decimal)
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new_p_rain_whole_label.next_to(new_brace_rain, UP)
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new_brace_sun = Brace(new_sun_rect, DOWN)
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new_p_sun_label = TextMobject("$p($sun$)=$").scale(text_scale)
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new_p_sun_decimal = DecimalNumber(new_p_sun).scale(text_scale)
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new_p_sun_decimal.next_to(new_p_sun_label)
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new_p_sun_whole_label = VGroup(new_p_sun_label, new_p_sun_decimal)
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new_p_sun_whole_label.next_to(new_brace_sun, DOWN)
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def rain_update_func(alpha):
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return alpha * new_p_rain + (1 - alpha) * p_rain
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def sun_update_func(alpha):
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return 1 - rain_update_func(alpha)
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run_time = 5
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update_p_rain = ChangingDecimal(
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p_rain_decimal, rain_update_func,
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tracked_mobject = p_rain_label,
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run_time = run_time
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)
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update_p_sun = ChangingDecimal(
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p_sun_decimal, sun_update_func,
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tracked_mobject = p_sun_label,
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run_time = run_time
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)
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self.play(
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Transform(rain_rect, new_rain_rect, run_time = run_time),
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Transform(sun_rect, new_sun_rect, run_time = run_time),
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Transform(rain, new_rain, run_time = run_time),
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Transform(sun, new_sun, run_time = run_time),
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Transform(brace_rain, new_brace_rain, run_time = run_time),
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Transform(brace_sun, new_brace_sun, run_time = run_time),
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Transform(p_rain_label, new_p_rain_label, run_time = run_time),
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Transform(p_sun_label, new_p_sun_label, run_time = run_time),
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update_p_rain,
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update_p_sun
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)
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