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Revert back to original TexMobject.add_background_rectangle

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This commit is contained in:
Grant Sanderson
2016-08-09 14:17:40 -07:00
parent e5747b3f3b
commit 95b7ecb25b
2 changed files with 36 additions and 8 deletions
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42
eola/chapter6.py
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@ -763,24 +763,52 @@ class MultiplyToIdentity(LinearTransformationScene):
identity = Matrix([[1, 0], [0, 1]])
identity.highlight_columns(X_COLOR, Y_COLOR)
identity.next_to(eq, RIGHT)
VMobject(lhs, identity).center().to_edge(UP)
lhs.add_background_rectangle()
identity.add_to_back(BackgroundRectangle(identity))
VMobject(lhs, identity).center().to_corner(UP+RIGHT)
for mob in A, A_inv, eq:
mob.add_to_back(BackgroundRectangle(mob))
identity.background = BackgroundRectangle(identity)
col1 = VMobject(*identity.get_mob_matrix[:,0])
col2 = VMobject(*identity.get_mob_matrix[:,1])
col1 = VMobject(*identity.get_mob_matrix()[:,0])
col2 = VMobject(*identity.get_mob_matrix()[:,1])
A.text = "Transformation"
A_inv.text = "Inverse transformation"
product = VMobject(A, A_inv)
product.text = "Matrix multiplication"
identity.text = "The transformation that does nothing"
identity.text = "The transformation \\\\ that does nothing"
for mob in A, A_inv, product, identity:
mob.brace = Brace(mob)
mob.text = mob.brace.get_text(mob.text)
mob.text.add_background_rectangle()
self.add(A, A_inv)
self.add_foreground_mobject(A, A_inv)
brace, text = A.brace, A.text
self.play(GrowFromCenter(brace), Write(text), run_time = 1)
self.add_foreground_mobject(brace, text)
self.apply_transposed_matrix(self.t_matrix)
self.play(
Transform(brace, A_inv.brace),
Transform(text, A_inv.text),
)
self.apply_inverse_transpose(self.t_matrix)
self.dither()
self.play(
Transform(brace, product.brace),
Transform(text, product.text)
)
self.dither()
self.play(
Write(identity.background),
Write(identity.get_brackets()),
Write(eq),
Transform(brace, identity.brace),
Transform(text, identity.text)
)
self.dither()
self.play(Write(col1))
self.dither()
self.play(Write(col2))
self.dither()

2
mobject/tex_mobject.py
View File

@ -100,7 +100,7 @@ class TexMobject(SVGMobject):
fill_opacity = opacity
)
letters = VMobject(*self.submobjects)
self.add_to_back(rect)
self.submobjects = [rect, letters]
return self
class TextMobject(TexMobject):