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Show examples of indexing by substrings and regular expressions

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This commit is contained in:
Grant Sanderson 2022-12-29 19:45:29 -08:00
parent fdccfd51fc
commit 632819dd6d
1 changed files with 12 additions and 5 deletions
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17
example_scenes.py
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@ -193,11 +193,7 @@ class TexTransformExample(Scene):
), ),
) )
self.wait() self.wait()
self.play( self.play(TransformMatchingStrings(lines[1].copy(), lines[2]))
TransformMatchingStrings(
lines[1].copy(), lines[2],
),
)
self.wait() self.wait()
self.play( self.play(
TransformMatchingStrings( TransformMatchingStrings(
@ -208,6 +204,17 @@ class TexTransformExample(Scene):
), ),
) )
self.wait(2) self.wait(2)
# You can also index into Tex mobject (or other StringMobjects)
# by substrings and regular expressions
top_equation = lines[0]
low_equation = lines[3]
self.play(LaggedStartMap(FlashAround, low_equation["C"], lag_ratio=0.5))
self.play(LaggedStartMap(FlashAround, low_equation["B"], lag_ratio=0.5))
self.play(LaggedStartMap(FlashAround, top_equation[re.compile(r"\w\^2")]))
self.play(Indicate(low_equation[R"\sqrt"]))
self.wait()
self.play(LaggedStartMap(FadeOut, lines, shift=2 * RIGHT)) self.play(LaggedStartMap(FadeOut, lines, shift=2 * RIGHT))
# TransformMatchingShapes will try to line up all pieces of a # TransformMatchingShapes will try to line up all pieces of a