Question

我试图绘制具有一致腿长的VHV关系的继承树。我发现长度根据类盒内容的大小而变化。

这是（不是M）WE：

\documentclass[border={1cm 1cm 1cm 1cm}]{standalone}
\usepackage{tikz-uml}
\usetikzlibrary{calc, decorations.pathmorphing,decorations.pathreplacing, 
fadings, shadings, shapes, arrows, positioning,patterns,automata}

\newcommand{\derivedown}[4]{
    \umlclass[below=1cm of #1.south, anchor=north]{#2}{#3}{#4}
    \umlinherit{#2}{#1}}
\newcommand{\derivedownt}[5]{
    \umlclass[below=1cm of #1.south, anchor=north, template=#3]{#2}{#4}{#5}
    \umlinherit{#2}{#1}}
\newcommand{\derivedownleft}[4]{
    \umlclass[below left=1cm and 0.5cm of #1.south, anchor=north east]{#2}{#3}{#4}
    \umlVHVinherit[arm2=-1.5cm]{#2}{#1}}
\newcommand{\siblingleft}[5]{
    \umlclass[left=1cm of #1.north west, anchor=north east]{#3}{#4}{#5}
    \umlVHVinherit[arm2=-1.5cm]{#3}{#2}}
\newcommand{\siblingright}[5]{
    \umlclass[right=1cm of #1.north east, anchor=north west]{#3}{#4}{#5}
    \umlVHVinherit[arm2=-1.5cm]{#3}{#2}}
\newcommand{\note}[2]{
    \umlnote[below left=0.5cm and 0.5cm of #1.north east, anchor=south west]{#1}{#2}
    }

\begin{document}
\begin{tikzpicture}

    \umlclass{RefCount}{int refs;}{AddRef();Release();}
    \note{RefCount}{deletes this on release to zero}
    \derivedown{RefCount}{Event}{int id, prio}{}
    \derivedown{Event}{EventAgent}{}{\umlvirt{deliver()=0;}\\ \umlvirt{getDeliveryTarget()=0;}}
    \derivedown{EventAgent}{SyncEventAgent}{id=kAgentEventId}{send(IEventDispatcher dis) \{ \\ \hskip1em AddRef(); \\ \hskip1em dis.isThreadCurrent() \\ \hskip2em ? deliver() \\ \hskip2em : dis.sendEventSync(this); \\ \hskip1em Release(); \} }
    \siblingleft{SyncEventAgent}{EventAgent}{SyncRetEventAgent}{}{}
    \siblingright{SyncEventAgent}{EventAgent}{AsyncEventAgent}{}{send/remove(IEventDispatcher dis) \{ \\ \hskip1em dis.send/remove(this); \}}
    \derivedownt{SyncRetEventAgent}{SyncRetEventAgentN}{T...}{}{}
    \derivedownt{SyncEventAgent}{SyncEventAgentN}{T...}{}{}
    \derivedownt{AsyncEventAgent}{AsyncEventAgentN}{T...}{}{}

    \umlclass[right=10cm of RefCount]{IEventDispatcher}{}{\umlvirt{send/remove events} \\ \umlvirt{add/remove listener for id} \\ \umlvirt{isThreadCurrent()}}
    \derivedown{IEventDispatcher}{EventDispatcher}{}{}
    \derivedownleft{EventDispatcher}{EventThread}{}{}
    \siblingright{EventThread}{EventDispatcher}{Selector}{}{}

    \umlclass[right=2cm of EventDispatcher]{EventListenerNode}{}{}
    \umluniaggreg[mult2=*]{EventDispatcher}{EventListenerNode}

    \umlclass[right=10cm of IEventDispatcher]{IEventListener}{}{\umlvirt{void receiveEvent(Event*)}}
\end{tikzpicture}

\end{document}

在结果上，您将在EventAgent下方看到一个分叉，在EventDispatcher下方看到另一个分叉，但它们具有不同的分支长度。如果你取出所有3个[arm2 = -1.5cm]选项，你会发现左边的三向叉变得不平衡。这个-1.5cm的数字一开始很奇怪，但这就是我需要的大致正确的结果。

我认为开箱即用并没有理由让这些腿长取决于盒子的大小。它们应该从它们加入类盒边缘的位置进行测量。

我该如何解决这个问题？

PS：将第一个宏更改为：

\newcommand{\derivedown}[4]{
    \umlclass[below=1cm of #1.south, anchor=north]{#2}{#3}{#4}
    \umlinherit[name=under#1, anchor1=90, anchor2=90]{#2}{#1}
    \umlpoint{under#1-1}}

我们看到继承箭头居中的位置，实际上它们似乎在类框的中点之间延伸。我尝试了arm1 / 2选项的每个组合，包括没有，没有用。

TikZ-UML关系似乎固定在班级中间

0 个答案: