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from manimlib.imports import *
class S(ThreeDScene):
def construct(self):
axes=ThreeDAxes()
sphere=Sphere(radius=2,checkerboard_colors=[BLUE_C,BLUE_B],fill_opacity=0.75)
v1=Vector(color=YELLOW,buff=5)
v1.rotate(PI/4,axis=DOWN)
v1.shift(1.5*RIGHT+1.5*OUT)
v2=Vector(color=RED,buff=5)
v2.rotate(PI/4,axis=DOWN)
v2.rotate(PI,axis=DOWN)
v2.shift(0.77*RIGHT+0.77*OUT)
n1=TextMobject(r"$\vec{n}$",color=YELLOW)
n2=TextMobject(r"$-\vec{n}$",color= RED)
n1.rotate(PI/2,axis=RIGHT)
n1.shift(2*RIGHT+2*OUT)
n2.rotate(PI/2,axis=RIGHT)
n2.shift(0.42*RIGHT+0.42*OUT)
self.set_camera_orientation(phi=75 * DEGREES,theta=-45*DEGREES)
# self.add(mobius)
# self.play(ShowCreation(axes))
self.play(ShowCreation(axes))
# self.play(ShowCreation(vg))
self.play(ShowCreation(sphere))
self.wait(0.7)
self.play(ShowCreation(v1, run_time=2))
self.play(ShowCreation(n1))
self.wait(1)
self.begin_ambient_camera_rotation(rate=0.65)
self.wait(2)
self.play(ShowCreation(v2, run_time=3))
self.wait(3)
self.play(ShowCreation(n2))
self.stop_ambient_camera_rotation()
self.wait(1.2)
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