Blindvermogen.py

from manim import *

%%manim -qm -v WARNING PointMovingOnShapes
class PointMovingOnShapes(Scene):
    def construct(self):
        circle = Circle(radius=2, color=BLUE)
        P = Arrow(ORIGIN, [2, 0, 0], buff=0)
        Q = Arrow(ORIGIN, [0, -2, 0], buff=0)
        S = Arrow(ORIGIN, [np.sqrt(2), -np.sqrt(2), 0], buff=0)
        self.add(circle)
        self.wait()
        self.add(P)
        self.add(Q)
        self.play(
            FadeIn(P, shift=DOWN),
            FadeIn(Q, shift=DOWN),
        )
        self.add(Text('P').next_to(P.get_end(), RIGHT))
        self.add(Text('Q').next_to(Q.get_end(), RIGHT))

        self.wait()
        self.add(S)
        self.play(
            FadeIn(S, shift=DOWN),
        )
        self.add(Text('S').next_to(S.get_end(), RIGHT))
        self.wait()