tikz-uml 组件框不包含移位元素

Question

我尝试用一​​个辅助点（M）连接两个类，但是组件没有覆盖该点，所以我的连接线在组件框外面。

\documentclass[tikz,border=2pt]{standalone}
\usetikzlibrary{positioning}
\usepackage{tikzscale}
\pgfdeclarelayer{background,foreground}
\pgfsetlayers{background,main,foreground}
\usepackage{tikz-uml}

\begin{document}
\begin{tikzpicture}
\begin{umlpackage}{DecoratorPattern}
\umlclass[]{Shape}{}{+void draw()}
\umlclass[below=1cm of Shape]{Rectangle}{}{+draw()}
\umlclass[left=1cm of Rectangle]{Circle}{}{+draw()}
\umlclass[right=1cm of Rectangle]{ShapeDecorator}{}{+draw()\\+void setRedBorder()}
\umlclass[below=1cm of ShapeDecorator]{RedShapeDecorator}{}{+draw()\\+void setRedBorder()}
\umlinherit[geometry=|-|]{Circle}{Shape}
\umlinherit[geometry=|-|]{Rectangle}{Shape}
\umlinherit[geometry=|-|]{ShapeDecorator}{Shape}
\umlinherit[geometry=|-|]{RedShapeDecorator}{ShapeDecorator}
\coordinate (M) at ([xshift=1cm]ShapeDecorator.east |- Shape);
\umlaggreg[geometry=-|]{ShapeDecorator}{M};
\umlassoc[geometry=--]{M}{Shape};
\end{umlpackage}
\end{tikzpicture}
\end{document}

如果不使用帮助点，连接位置将与其他连接线相交。

Answer 1

您可以使用以下坐标代替

\umlemptyclass[right=1cm of ShapeDecorator,coordinate,opacity=0]{M}

该coordinate选项使它成为\coordinate而不是普通的node，并opacity=0使其不可见。然后，您还需要稍微改变绘制线条的方式，请参阅代码中的注释。

\documentclass[tikz,border=20pt]{standalone}
\usetikzlibrary{positioning}
\usepackage{tikzscale}
\pgfdeclarelayer{background,foreground}
\pgfsetlayers{background,main,foreground}
\usepackage{tikz-uml}

\begin{document}
\begin{tikzpicture}
\begin{umlpackage}{DecoratorPattern}
\umlclass[]{Shape}{}{+void draw()}
\umlclass[below=1cm of Shape]{Rectangle}{}{+draw()}
\umlclass[left=1cm of Rectangle]{Circle}{}{+draw()}
\umlclass[right=1cm of Rectangle]{ShapeDecorator}{}{+draw()\\+void setRedBorder()}
\umlclass[below=1cm of ShapeDecorator]{RedShapeDecorator}{}{+draw()\\+void setRedBorder()}
\umlinherit[geometry=|-|]{Circle}{Shape}
\umlinherit[geometry=|-|]{Rectangle}{Shape}
\umlinherit[geometry=|-|]{ShapeDecorator}{Shape}
\umlinherit[geometry=|-|]{RedShapeDecorator}{ShapeDecorator}

\umlemptyclass[right=1cm of ShapeDecorator,coordinate,opacity=0,draw=none]{M}

\umlaggreg[geometry=--]{ShapeDecorator}{M} % use -- here
\umlassoc[geometry=|-]{M}{Shape} % and |- here
\end{umlpackage}
\end{tikzpicture}
\end{document}