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added animation steps for brick wall

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This commit is contained in:
Ben Hambrecht
2018-05-09 16:36:14 +02:00
parent 7219ff95f7
commit 84c025aac6
2 changed files with 22 additions and 7 deletions
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27
active_projects/eop/chapter1/entire_brick_wall.py
View File

@ -1,29 +1,30 @@
from big_ol_pile_of_manim_imports import *
from active_projects.eop.reusable_imports import *
from active_projects.eop.chapter1.brick_row_scene import BrickRowScene
class EntireBrickWall(Scene):
class EntireBrickWall(BrickRowScene):
def construct(self):
self.remove(self.get_primary_pi_creature())
row_height = 0.3
nb_rows = 20
start_point = 3 * UP + 1 * LEFT
rows = VMobject()
rows.add(BrickRow(0, height = row_height))
rows[0].move_to(start_point)
rows.move_to(start_point)
self.add(rows)
zero_counter = Integer(0).next_to(start_point + 0.5 * rows[0].width * RIGHT)
nb_flips_text = TextMobject("\# of flips")
nb_flips_text.next_to(zero_counter, RIGHT, buff = LARGE_BUFF)
self.add(zero_counter, nb_flips_text)
for i in range(1,nb_rows + 1):
rows.add(BrickRow(i, height = row_height))
rows[-1].move_to(start_point + (i - 1) * row_height * DOWN)
for i in range(1, nb_rows + 1):
rows.add(rows[-1].copy())
self.bring_to_back(rows[-1])
anims = [
rows[-1].shift, row_height * DOWN,
@ -37,6 +38,12 @@ class EntireBrickWall(Scene):
self.play(*anims)
self.play(SplitRectsInBrickWall(rows[-1]))
rows.submobjects[-1] = self.merge_rects_by_subdiv(rows[-1])
rows.submobjects[-1] = self.merge_rects_by_coloring(rows[-1])
# draw indices under the last row for the number of tails
tails_counters = VGroup()
for (i, rect) in enumerate(rows[-1].rects):
@ -62,6 +69,12 @@ class EntireBrickWall(Scene):
FadeIn(nb_tails_text)
)
# remove any hidden brick rows
hidden_brick_rows = VGroup(*[mob for mob in self.mobjects
if isinstance(mob, BrickRow) and not mob in rows
])
self.remove(hidden_brick_rows)
special_brick_copy = rows[-1].rects[13].copy()
self.play(
rows.fade, 0.9,

2
active_projects/eop/reusables/brick_row.py
View File

@ -184,6 +184,7 @@ class SplitRectsInBrickWall(AnimationGroup):
def __init__(self, mobject, **kwargs):
#print mobject.height, mobject.get_height()
r = self.subdiv_level = mobject.subdiv_level + 1
subdivs = VGroup()
@ -196,6 +197,7 @@ class SplitRectsInBrickWall(AnimationGroup):
subdiv = DashedLine(
mobject.get_top() + x * RIGHT,
mobject.get_bottom() + x * RIGHT,
dashed_segment_length = 0.02
)
subdivs.add(subdiv)
anims.append(ShowCreation(subdiv))