python - 如何在 Manim 社区中将文本放在矩形内

Question

this is the thing I wanted to make

我是 manim 的新手，我正在尝试将文本放在一个矩形内，如图中所示我怎样才能做到这一点 ？？ :(

Answer 1

您可以使用 VGroup 将框和文本组合在一起。

示例代码:

from manimlib import *

def create_textbox(color, string):
    result = VGroup() # create a VGroup
    box = Rectangle(  # create a box
        height=2, width=3, fill_color=color, 
        fill_opacity=0.5, stroke_color=color
    )
    text = Text(string).move_to(box.get_center()) # create text
    result.add(box, text) # add both objects to the VGroup
    return result


class TextBox(Scene):  
    def construct(self):

        # create text box
        textbox = create_textbox(color=BLUE, string="Hello world")
        self.add(textbox)

        # move text box around
        self.play(textbox.animate.shift(2*RIGHT), run_time=3)
        self.play(textbox.animate.shift(2*UP), run_time=3)
        self.wait()