Tikz 沿路径画线

Question

我需要 Tikz 技巧的支持，以便能够自定义沿路径的绘图。

下面是我使用的代码：

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\documentclass{standalone}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{tikz}
\usetikzlibrary{hobby,bending}
\usetikzlibrary{decorations.text}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{document}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{tikzpicture}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{scope}
\draw[  %
        black,  %
        line cap = round, 
        line width = 7pt
        ]   %
                (+00.00,-04.35) to [curve through={ %
                                                    (+01.25,-02.90) ..  % B
                                                    (+00.00,-01.45) ..  % C
                                                    (-01.25,+00.00) ..  % D
                                                    (+00.00,+01.45) ..  % E
                                                    (+01.25,+02.90) ..  % F
                                                    (+00.00,+04.35) ..  % G
                                                    (-01.25,+02.90) ..  % H
                                                    (+00.00,+01.45) ..  % I
                                                    (+01.25,+00.00) ..  % J
                                                    (+00.00,-01.45) ..  % K
                                                    (-01.25,-02.90)     % L
                                                    }
                ]
                (+00.00,-04.35);
\end{scope}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{scope}
\path[  %
        postaction={    %
                     decorate,
                     decoration={   %
                                text along path,
                                reverse path=true,
                                raise=-0.1cm,
                                text color = white,
                                text={
                                      !! MISSING TEXT !!
                                    }
                                }   %
                    }
        ]   %
                (+00.00,-04.35) to [curve through={ %
                                                    (+01.25,-02.90) ..  % B
                                                    (+00.00,-01.45) ..  % C
                                                    (-01.25,+00.00) ..  % D
                                                    (+00.00,+01.45) ..  % E
                                                    (+01.25,+02.90) ..  % F
                                                    (+00.00,+04.35) ..  % G
                                                    (-01.25,+02.90) ..  % H
                                                    (+00.00,+01.45) ..  % I
                                                    (+01.25,+00.00) ..  % J
                                                    (+00.00,-01.45) ..  % K
                                                    (-01.25,-02.90)     % L
                                                    }
                ]
                (+00.00,-04.35);
\end{scope}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\end{tikzpicture}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\end{document}

如果没有第二个范围，输出如下所示：

但我想获得类似的东西：

这个想法是：

1. 为了使 Tikz 代码尽可能简单，最好使用坐标来保持“爱好”库功能：最终绘制的是不同的，我不想自己计算所有坐标
2. 可以使用类似 text = {--- . . -- . .} 的内容来定义线“类型”，根据需要给出短线、点和长线以及路径上的起点
3. 当不同的线交叉时可以定义白色阴影
4. 保留定义线宽的可能性（这里是 7pt）
5. 保留圆帽。

我尝试使用文本装饰，但没有成功...有什么办法可以解决这个问题吗？使用其他包？定义新命令？

谢谢你的支持 ！

Answer 1

谢谢黑色温和之后，我重新开始阅读 tik-pgf 库的文档，在那里我确实通过使用“dash-pattern”选项找到了答案。

结果代码如下：

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\documentclass{standalone}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{tikz}
\usetikzlibrary{hobby,bending}
\usetikzlibrary{decorations.text}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{document}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\def\xscale{2.00}
\def\yscale{5.00}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{tikzpicture}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{scope}[dash pattern=on 13pt off 13pt on 45pt off 13pt on 20pt off 13pt]
\draw[  %
        blue!40,  %
        line cap = round, 
        line width = 7pt
        ]   %
                (+00.00,-04.35) to [curve through={ %
                                                    (+01.25,-02.90) ..  % B
                                                    (+00.00,-01.45) ..  % C
                                                    (-01.25,+00.00) ..  % D
                                                    (+00.00,+01.45) ..  % E
                                                    (+01.25,+02.90) ..  % F
                                                    (+00.00,+04.35) ..  % G
                                                    (-01.25,+02.90) ..  % H
                                                    (+00.00,+01.45) ..  % I
                                                    (+01.25,+00.00) ..  % J
                                                    (+00.00,-01.45) ..  % K
                                                    (-01.25,-02.90)     % L
                                                    }
                ]
                (+00.00,-04.35);
\end{scope}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\end{tikzpicture}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\end{document}

无论如何我都会遵循给出的建议并开始使用 Asymptote，因为它似乎提供了许多优点。

谢谢，

用户240879