[04-7] Examples: Object moving animation

Let's make a simple animation showing the movement of a shape using to_edge and to_corner. The first screen is a dot on the left side, and this dot flies up/center/bottom of the wall on the right side.

 

 

 

It's a simple animation, but if you follow the whole process of how to make a coding strategy for how to write these programming needs, and how to do the actual coding and execution, it will be a cornerstone for making complex animations without problems.

 

Let's make a plan how to code for the requirement.

 

1) Make a single Dot object and move it to the left side: dot.to_edge(LEFT)
2) Since this dot has to fly to 3 places, we need to make 3 copies of the Dot object.
3) You can send the three copied Dots using to_corner(UR), to_edge(RIGHT) and to_corner(DR).
4) We will make the above 2)~3) process as a method so that we can call it multiple times.

 

Let's create code according to the above strategy.

 

1) Make a single Dot object and move it to the left side: dot.to_edge(LEFT)

        dot = Dot()

        dot.to_edge(LEFT)
        self.add(dot)
        self.wait()

2) Since this dot has to fly to 3 places, we need to make 3 copies of the Dot object.

        d1 = dot.copy()
        d2 = dot.copy()
        d3 = dot.copy()

3) You can send the three copied Dots using to_corner(UR), to_edge(RIGHT) and to_corner(DR).

        self.play(
            d1.to_corner, UR,
            d2.to_edge, RIGHT,
            d3.to_corner, DR,
        )

4) We will make the above 2)~3) process as a method so that we can call it multiple times.

    def move_dot(self, dot):
        d1 = dot.copy()
        d2 = dot.copy()
        d3 = dot.copy()

        self.play(
            d1.to_corner, UR,
            d2.to_edge, RIGHT,
            d3.to_corner, DR,
        )
        self.remove(d1, d2, d3)

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Below is full source code.

from manimlib.imports import *

class CoordinateEx2(Scene):
    def construct(self):
        dot = Dot()

        dot.to_edge(LEFT)
        self.add(dot)
        self.wait()

        for i in range(0,5):
            self.move_dot(dot)


    def move_dot(self, dot):
        d1 = dot.copy()
        d2 = dot.copy()
        d3 = dot.copy()

        self.play(
            d1.to_corner, UR,
            d2.to_edge, RIGHT,
            d3.to_corner, DR,
        )
        self.remove(d1, d2, d3)

 

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