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tweaking the 3rd coin flip

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This commit is contained in:
Ben Hambrecht
2018-05-03 20:34:37 +02:00
parent 5f73509264
commit b808384b0e
2 changed files with 29 additions and 31 deletions
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57
active_projects/eop/chapter1/brick_row_scene.py
View File

@ -94,42 +94,30 @@ class BrickRowScene(PiCreatureScene):
for (i, tally) in enumerate(self.tallies):
new_tally_left = TallyStack(tally.nb_heads + 1, tally.nb_tails)
target_left = tally_targets_left[i]
v = target_left - tally.anchor
anims1.append(tally.move_anchor_to)
anims1.append(target_left)
new_tally_left.move_anchor_to(target_left)
anims1.append(Transform(tally, new_tally_left))
tally.anchor = target_left
tally.nb_heads = new_tally_left.nb_heads
tally.nb_tails = new_tally_left.nb_tails
tally_copy = self.tallies_copy[i]
target_right = tally_targets_right[i]
v = target_right - tally_copy.anchor
anims1.append(tally_copy.move_anchor_to)
anims1.append(target_right)
tally_copy.anchor = target_right
anims2 = []
for (i, tally) in enumerate(self.tallies):
new_tally_left = TallyStack(tally.nb_heads + 1, tally.nb_tails)
new_tally_left.move_anchor_to(tally.anchor)
anims2.append(Transform(tally, new_tally_left))
tally_copy = self.tallies_copy[i]
for (i, tally) in enumerate(self.tallies_copy):
new_tally_right = TallyStack(tally.nb_heads, tally.nb_tails + 1)
new_tally_right.move_anchor_to(tally_copy.anchor)
anims2.append(Transform(tally_copy, new_tally_right))
target_right = tally_targets_right[i]
new_tally_right.move_anchor_to(target_right)
anims2.append(Transform(tally, new_tally_right))
tally_copy.nb_heads = new_tally_right.nb_heads
tally_copy.nb_tails = new_tally_right.nb_tails
tally.nb_heads = new_tally_left.nb_heads
tally.nb_tails = new_tally_left.nb_tails
tally.anchor = target_right
tally.nb_heads = new_tally_right.nb_heads
tally.nb_tails = new_tally_right.nb_tails
return anims1, anims2
@ -139,7 +127,7 @@ class BrickRowScene(PiCreatureScene):
self.play(*(anims1 + anims2))
def split_tallies_in_two_steps(self, direction = DOWN):
# First all thiode to the left, then those to the right
# First all those to the left, then those to the right
anims1, anims2 = self.tally_split_animations(direction = direction)
self.play(*anims1)
self.wait(0.3)
@ -154,7 +142,9 @@ class BrickRowScene(PiCreatureScene):
half_merged_row.subdiv_level += 1
half_merged_row.generate_points()
half_merged_row.move_to(self.row)
self.play(FadeIn(half_merged_row))
self.remove(self.row)
self.row = half_merged_row
def merge_tallies(self, direction = UP):
@ -198,6 +188,7 @@ class BrickRowScene(PiCreatureScene):
merged_row.move_to(self.row)
self.play(FadeIn(merged_row))
self.remove(self.row)
self.row = merged_row
@ -465,16 +456,20 @@ class BrickRowScene(PiCreatureScene):
# move row up, leace a copy without tallies below
new_row = self.row.copy()
self.clear()
self.add(randy, self.row, self.tallies)
self.bring_to_back(new_row)
self.play(
self.row.shift,2.5 * UP,
self.tallies.shift,2.5 * UP,
self.row.shift, 2.5 * UP,
self.tallies.shift, 2.5 * UP,
)
old_row = self.row
self.row = new_row
self.play(FlipCoin(randy))
self.wait()
return
self.play(
SplitRectsInBrickWall(self.row)
@ -490,7 +485,7 @@ class BrickRowScene(PiCreatureScene):
self.wait()
self.move_tallies_on_top()
return
# show individual outcomes
outcomes = self.row.get_outcome_rects_for_level(3, with_labels = True)

3
active_projects/eop/reusables/coin_stacks.py
View File

@ -15,6 +15,9 @@ class CoinStack(VGroup):
coin = self.face(thickness = self.coin_thickness)
coin.shift(n * self.coin_thickness * UP)
self.add(coin)
if self.size == 0:
point = VectorizedPoint()
self.add(point)
class HeadsStack(CoinStack):
CONFIG = {