public-mirrors/3b1b-manim
1
0
Fork 0
mirror of https://github.com/3b1b/manim.git synced 2025-08-05 16:49:03 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Finished ShowCommutativeDiagram of fourier

Browse source
This commit is contained in:
Grant Sanderson 2018-01-21 10:45:26 -08:00
parent f5d3742ff8
commit c7eb88cc75
1 changed files with 56 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

63
active_projects/fourier.py
View file

@ -1800,6 +1800,7 @@ class ShowCommutativeDiagram(ShowLinearity):
freq_label = TextMobject("Frequency")
freq_label.scale(self.text_scale_val)
freq_label.next_to(freq_axes.x_axis, DOWN, SMALL_BUFF, RIGHT)
freq_axes.label = freq_label
freq_axes.add(freq_label)
freq_axes.scale(0.8)
fa_group = VGroup(
@ -1807,14 +1808,13 @@ class ShowCommutativeDiagram(ShowLinearity):
)
VGroup(ta_group[1], fa_group[1]).shift(MED_LARGE_BUFF*UP)
for ta, fa in zip(ta_group, fa_group):
if ta is not ta_group[0]:
ta.remove(ta.labels)
fa.remove(fa[-1])
fa.next_to(
ta.x_axis.main_line, RIGHT,
submobject_to_align = fa.x_axis.main_line
)
fa.to_edge(RIGHT)
ta.remove(ta.labels)
fa.remove(fa.label)
## Add graphs
funcs = [
@ -1854,7 +1854,6 @@ class ShowCommutativeDiagram(ShowLinearity):
words.scale(0.6)
words.next_to(arrow, UP)
arrow.words = words
self.add(arrow, words)
ta.graph = time_graph
ta.graph_label = label
@ -1878,10 +1877,60 @@ class ShowCommutativeDiagram(ShowLinearity):
arrow.words = TextMobject("Sum").scale(0.75)
arrow.words.next_to(arrow, RIGHT, buff = MED_SMALL_BUFF)
sum_arrows.add(arrow)
self.add(arrow, arrow.words)
self.add(ta_group, fa_group)
def apply_transform(index):
ta = ta_group[index].deepcopy()
fa = fa_group[index]
anims = [
ReplacementTransform(
getattr(ta, attr), getattr(fa, attr)
)
for attr in "x_axis", "y_axis", "graph"
]
anims += [
GrowArrow(ta.arrow),
Write(ta.arrow.words),
]
if index == 0:
anims.append(ReplacementTransform(
ta.labels[0],
fa.label
))
self.play(*anims, run_time = 1.5)
#Animations
self.add(*ta_group[:2])
self.add(ta_group[0].labels)
self.wait()
apply_transform(0)
apply_transform(1)
self.wait()
self.play(
GrowArrow(sum_arrows[1]),
Write(sum_arrows[1].words),
*[
ReplacementTransform(
fa.copy(), fa_group[2]
)
for fa in fa_group[:2]
]
)
self.wait(2)
self.play(
GrowArrow(sum_arrows[0]),
Write(sum_arrows[0].words),
*[
ReplacementTransform(
mob.copy(), ta_group[2],
run_time = 1
)
for mob in ta_group[:2]
]
)
self.wait()
apply_transform(2)
self.wait()