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from manimlib.imports import *
class Div(Scene):
def construct(self):
one=TextMobject(r"Div$ \vec{F} < 0$ ").set_color(RED)
two=TextMobject(r"Div$ \vec{F} = 0$ ").set_color(BLUE)
three=TextMobject(r"Div$ \vec{F} > 0$ ").set_color(YELLOW)
one.shift(2.3*DOWN)
two.shift(2.3*DOWN)
three.shift(2.3*DOWN)
a=Dot(color=RED)
a.shift(0.1*LEFT)
b=Dot(color=BLUE)
b.shift(0.1*LEFT)
c=Dot(color=YELLOW)
c.shift(0.1*LEFT)
rot=[0*DEGREES,45*DEGREES,90*DEGREES,135*DEGREES,180*DEGREES,225*DEGREES,270*DEGREES,315*DEGREES]
rot2=[180*DEGREES,180*DEGREES,180*DEGREES,180*DEGREES,180*DEGREES,180*DEGREES,180*DEGREES,180*DEGREES]
shift=[RIGHT,0.7*RIGHT+0.7*UP,UP,0.7*LEFT+0.7*UP,LEFT,0.7*LEFT+0.7*DOWN,DOWN,0.7*RIGHT+0.7*DOWN]
shift2=[RIGHT,RIGHT+UP,RIGHT+DOWN,UP,DOWN,LEFT,LEFT+UP,LEFT+DOWN]
u=[Vector(color=RED),Vector(color=RED),Vector(color=RED),Vector(color=RED),
Vector(color=RED),Vector(color=RED),Vector(color=RED),Vector(color=RED)]
[u[i].rotate(rot[i]) for i in range(8) ]
[u[i].rotate(rot2[i]) for i in range(8) ]
[u[i].shift(shift[i]) for i in range(8) ]
divone=VGroup(*u)
divone.shift(0.6*LEFT)
v=[Vector(color=BLUE),Vector(color=BLUE),Vector(color=BLUE),Vector(color=BLUE),
Vector(color=BLUE),Vector(color=BLUE),Vector(color=BLUE),Vector(color=BLUE)]
[v[i].rotate(45*DEGREES) for i in range(8)]
[v[i].shift(shift2[i]) for i in range(8) ]
divtwo=VGroup(*v)
divtwo.shift(0.6*LEFT)
w=[Vector(color=YELLOW),Vector(color=YELLOW),Vector(color=YELLOW),Vector(color=YELLOW),
Vector(color=YELLOW),Vector(color=YELLOW),Vector(color=YELLOW),Vector(color=YELLOW)]
[w[i].rotate(rot[i]) for i in range(8)]
[w[i].shift(shift[i]) for i in range(8) ]
divthree=VGroup(*w)
divthree.shift(0.6*LEFT)
self.play(ShowCreation(a),ShowCreation(divone))
self.play(ShowCreation(one))
self.wait(1)
self.play(FadeOut(a),FadeOut(divone),FadeOut(one))
self.play(ShowCreation(b),ShowCreation(divtwo))
self.play(ShowCreation(two))
self.wait(1)
self.play(FadeOut(b),FadeOut(divtwo),FadeOut(two))
self.play(ShowCreation(c),ShowCreation(divthree))
self.play(ShowCreation(three))
self.wait(1)
self.play(FadeOut(c),FadeOut(divthree),FadeOut(three))
self.wait(0.5)
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