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finished ShowUncertainty1 (die)

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Ben Hambrecht 2018-04-20 09:08:52 +02:00
parent 8ab8b4f9a9
commit a5dee2d5b5
1 changed files with 16 additions and 32 deletions
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48
active_projects/eop/chapter1.py
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@ -977,6 +977,7 @@ class RowOfDice(VGroup):
new_die.submobjects[0].set_stroke(width = 7)
new_die.next_to(self, RIGHT)
self.add(new_die)
self.move_to(ORIGIN)
@ -986,9 +987,6 @@ class ShowUncertainty1(Scene):
eye = np.random.randint(1,7)
face = self.row_of_dice.submobjects[eye - 1]
self.tallies[eye - 1] += 1
new_hist = self.hist_from_tallies()
self.play(
ApplyMethod(face.submobjects[0].set_fill, {"opacity": 1},
@ -996,36 +994,23 @@ class ShowUncertainty1(Scene):
run_time = 0.3,
),
)
self.play(
Transform(self.dice_histogram, new_hist,
run_time = 0.5)
)
def hist_from_tallies(self):
x_scale = self.row_of_dice.get_width() / np.size(self.tallies)
hist = Histogram(np.ones(6), self.tallies,
mode = "widths",
x_labels = "none",
y_scale = 0.5,
x_scale = x_scale
)
hist.next_to(self.row_of_dice, UP)
return hist
def construct(self):
self.row_of_dice = RowOfDice().scale(0.5).move_to(2 * DOWN)
self.row_of_dice = RowOfDice().scale(1)
self.add(self.row_of_dice)
self.tallies = np.zeros(6)
self.dice_histogram = self.hist_from_tallies()
self.add(self.dice_histogram)
for i in range(30):
for i in range(5):
self.throw_a_die()
self.wait()
self.wait(1)
for i in range(10):
self.throw_a_die()
self.wait(0.3)
for i in range(10):
self.throw_a_die()
self.wait(0.1)
@ -1033,10 +1018,8 @@ class IdealizedDieHistogram(Scene):
def construct(self):
self.row_of_dice = RowOfDice().scale(0.5).move_to(2 * DOWN)
self.add(self.row_of_dice)
self.probs = 1.0/6 * np.ones(6)
x_scale = self.row_of_dice.get_width() / np.size(self.probs)
x_scale = 1.0
y_labels = ["${1\over 6}$"] * 6
@ -1048,9 +1031,10 @@ class IdealizedDieHistogram(Scene):
y_scale = 20,
x_scale = x_scale,
)
hist.next_to(self.row_of_dice, UP)
hist.remove(hist.y_labels_group)
self.add(hist)
self.play(FadeIn(hist))
self.play(LaggedStart(FadeIn, hist.y_labels_group))