def get_axis_labels(self, x_label="x", y_label="y"):
x_axis, y_axis = self.get_axes().split()
quads = [
(x_axis, x_label, UP, RIGHT),
(y_axis, y_label, RIGHT, UP),
]
labels = VGroup()
for axis, tex, vect, edge in quads:
label = TexMobject(tex)
label.add_background_rectangle()
label.next_to(axis, vect)
label.to_edge(edge)
labels.add(label)
self.axis_labels = labels
return labels
def get_axis_labels(self, x_label="x", y_label="y"):
x_axis, y_axis = self.get_axes().split()
quads = [
(x_axis, x_label, UP, RIGHT),
(y_axis, y_label, RIGHT, UP),
]
labels = VGroup()
for axis, tex, vect, edge in quads:
label = TexMobject(tex)
label.add_background_rectangle()
label.next_to(axis, vect)
label.to_edge(edge)
labels.add(label)
self.axis_labels = labels
return labels
def reveal_2_is_4(self):
sqrt2_towers = VGroup(*[
ExpTower(element = "\\sqrt{2}", order = 5).match_height(x_tower) \
.move_to(x_tower, aligned_edge = RIGHT)
for x_tower in self.x_towers
])
self.play(
Transform(self.x_towers, sqrt2_towers, submobject_mode = "lagged_start"),
run_time = 2,
)
self.wait()
self.play(FadeOut(self.rss))
self.wait()
two_equals_four = TexMobject("2", "=", "4")
for tex, color in zip(two_equals_four, [GREEN, WHITE, RED]):
tex.set_color(color)
two_equals_four.scale(3)
two_equals_four.to_edge(DOWN, buff = 1)
sources = VGroup(*[
self.equations[i][j][k].copy()
for i, j, k in [(0, 1, 1), (1, 1, 0), (1, 1, 1)]
])
for source, target in zip(sources, two_equals_four):
self.play(Transform(source, target))
self.wait()
fake_qed = FakeQEDSymbol(order = 2, jagged_percentage = 0.3)
fake_qed.next_to(two_equals_four, RIGHT, aligned_edge = DOWN, buff = 1)
self.play(FadeIn(fake_qed))
self.wait()
issue = TextMobject("思考：\\\\问题在哪？")
issue.set_color(YELLOW)
issue.to_corner(RIGHT+DOWN)
self.play(Write(issue), run_time = 1)
self.wait(2)
