def construct(self):
number_line = NumberLine(x_min=-1, x_max=1)
triangle = RegularPolygon(3, start_angle=-PI / 2) \
.scale(0.2) \
.next_to(number_line.get_left(), UP, buff=SMALL_BUFF)
decimal = DecimalNumber(
0,
num_decimal_places=3,
include_sign=True,
unit="\\rm cm", # Change this with None
)
decimal.add_updater(lambda d: d.next_to(triangle, UP * 0.1))
decimal.add_updater(lambda d: d.set_value(triangle.get_center()[0]))
# You can get the value of decimal with: .get_value()
self.add(number_line, triangle, decimal)
self.play(
triangle.shift,
RIGHT * 2,
rate_func=there_and_back, # Change this with: linear,smooth
run_time=5)
self.wait()
def get_information_label(self):
loc_label = VGroup(*(DecimalNumber(**self.cursor_location_config)
for n in range(3)))
def update_coords(loc_label):
for mob, coord in zip(loc_label, self.mouse_point.get_location()):
mob.set_value(coord)
loc_label.arrange(RIGHT, buff=loc_label.get_height())
loc_label.to_corner(DR, buff=SMALL_BUFF)
loc_label.fix_in_frame()
return loc_label
loc_label.add_updater(update_coords)
time_label = DecimalNumber(0, **self.time_label_config)
time_label.to_corner(DL, buff=SMALL_BUFF)
time_label.fix_in_frame()
time_label.add_updater(lambda m, dt: m.increment_value(dt))
return VGroup(loc_label, time_label)