Manim文本框功能开发：如何禁用Tex对象自动换行？

Manim的Tex组件自动换行是因为底层LaTeX引擎默认会根据容器宽度自动折行，要关闭这个行为，直接用LaTeX的\mbox{}命令包裹文本即可——它会把内容封装成一个不可分割的水平盒子，强制文本保持单行显示。

修改你的代码中两处创建Tex对象的地方：

1. 计算单词宽度时：

# 原代码
t = Tex(s+" ")
# 修改为
t = Tex(rf"\mbox{{{s}}}")  # 用\mbox包裹字符串，避免自动换行

2. 生成最终输出文本时：

# 原代码
t = Tex(s).scale(size)
# 修改为
t = Tex(rf"\mbox{{{s}}}").scale(size)

完整修改后的函数如下：

def tbox(slst, width, height):
    if width < 0.01 or height < 0.01: raise ("  Error: Box too small  ")
    if slst == []: raise("  Error: empty string list  ")

    nlst = [] # Word width list
    t_height = 0 # Max word height
    for s in slst: 
        t = Tex(rf"\mbox{{{s}}}")  # 这里修改
        nlst.append(t.width)
        t_height = max(t_height, t.height)
    
    t_ind = 0
    size = 1
    cur_line = ""
    line_len = 0
    out = []

    while t_ind < len(slst): # While there are strings to process
        # If a single string is too large or the height outside the max
        if nlst[t_ind]*size > width or len(out)*t_height*size > height:
            # then reset with a smaller text size.
            t_ind, cur_line, line_len, out = 0, "", 0, []
            size *= 0.5
            continue
        # If the current string fits, add it
        if (line_len + nlst[t_ind])*size <= width:
            cur_line += slst[t_ind]+" "
            line_len += nlst[t_ind]
        # otherwise log the line and start a fresh line
        else:
            out.append(cur_line)
            cur_line = ""
            line_len = 0
            continue
        
        t_ind += 1
    # Log any line that remains at the end.
    if line_len > 0:
        out.append(cur_line)
        
    # Fit the resulting strings into a scaled VGroup
    vg = VGroup()
    for s in out:
        t = Tex(rf"\mbox{{{s}}}").scale(size)  # 这里修改
        vg.add(t)
    vg.arrange(DOWN)

    return vg

如果你的字符串中包含LaTeX特殊字符（如下划线_、符号&等），需要先对这些字符进行转义，否则\mbox包裹后会触发LaTeX编译错误。

内容的提问来源于stack exchange，提问作者Addem