不遵守DOT文件中的端口規範的邊緣

Question

我正在嘗試爲正在編寫的工具生成類圖，但是我似乎無法得到正確的佈局。

下面是從實際數據產生我的樣本點文件：

digraph G { 
    fontname = "Bitstream Vera Sans" 
    fontsize = 8 
    splines = "ortho" 

    node [ 
     fontname = "Bitstream Vera Sans" 
     fontsize = 8 
     shape = "record" 
    ] 

    edge[ 
     arrowtail="empty" 
     dir="back" 
    ] 

    Baseclass [ 
     label = "{xxxxxxxxxx::Baseclass||+ xxxxxxxxxxx \l+ xxxxxxx \l+ xxxxxxxxx \l+ xxxxxxxxxxx \l+ xxxxxxxxxxx \l+ xxxxxxxxxxxx \l+ xxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxx \l+ xxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxx \l+ xxxxxxxxxxx \l+ xxxxxxx \l+ xxxxxxxxxxx \l+ xxxxxxxxxx \l+ xxxxxxxx \l+ xxxxxxxx \l+ xxxxxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx \l}" 
    ] 

    SubclassOne [ 
     label = "{xxxxxxxxxx::SubclassOne||+ xxxxxxxxxxx \l+ xxxxxxxxxxx \l+ xxxxxxxxxxx \l+ xxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxx \l+ xxxxxxx \l+ xxxxxxxxxxx \l+ xxxxxxxxxx \l+ xxxxxxxx \l+ xxxxxxxxxxxxxxx \l- xxxxxxxxxxxxxxxxxxxxx \l- xxxxxxxxxxxxxxxxxxxxxx \l- xxxxxxxxxxxxxxxxxx \l}" 
    ] 

    SubclassTwo [ 
     label = "{xxxxxxxxxx::SubclassTwo||+ xxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxx \l+ xxxxxxx \l+ xxxxxxxxxxx \l+ xxxxxxxxxxx \l+ xxxxxxxxxxxx \l+ xxxxxxxxx \l+ xxxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxx \l+ xxxxxxxx \l+ xxxxxxxxxxxxxxx \l}" 
    ] 

    SubclassThree [ 
     label = "{xxxxxxxxxx::SubclassThree||+ xxxxxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxx \l+ xxxxxxxx \l+ xxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxx \l+ xxxxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx \l+ xxxxxxxx \l+ xxxxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxx \l+ xxxxxxxx \l+ xxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx \l- xxxxxxxxxxxxxxxxxxxxxxxx \l- xxxxxxxxxxxxxxxxxxxxxxxxxxxxx \l- xxxxxxxxxxxxxxxxxxxxxxxxxxx \l- xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx \l- xxxxxxxxxxxxxx \l- xxxxxxxxxxxxxxxxxxxx \l}" 
    ] 

    SubclassFour [ 
     label = "{xxxxxxxxxx::SubclassFour||+ xxxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxx \l+ xxxxxxxxxxx \l+ xxxxxxxxxx \l+ xxxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxxx \l+ xxxxxxxx \l+ xxxxxxxx \l- xxxxxxxxxxxxxxxxxxxxxx \l- xxxxxxxxxxxxxxxxx \l}" 
    ] 

    SubclassFive [ 
     label = "{xxxxxxxxxx::SubclassFive||+ xxxxxxxxxxx \l+ xxxxxxxxxxx \l+ xxxxxxxxxxx \l+ xxxxxxx \l+ xxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxxxxxxxxx \l+ xxxxxxxxxxx \l+ xxxxxxxx \l+ xxxxxxxxxxxxxxx \l- xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx \l}" 
    ] 

    Baseclass:s -> SubclassOne:n; 
    Baseclass:s -> SubclassTwo:n; 
    Baseclass:s -> SubclassThree:n; 
    Baseclass:s -> SubclassFour:n; 
    Baseclass:s -> SubclassFive:n; 
} 

產生下面的圖片使用的graphviz：

我改變了邊緣關係的順序從基地到指向子類（帶有尾部箭頭），以便子類的排列順序要比基類垂直。長方法名稱溢出它們的容器，並且關係邊緣不服從尾端上的指定端口。看起來他們的X位置是正確的，但是Y位置不正確。我更喜歡它看起來something like this其中兩個子類關係箭頭組合在一起，形成超級容器底部中心點的單一連接。如果我刪除端口規範，邊緣不再剪切到它們連接的節點，但佈局仍然不是我認爲理想的。

Answer 1

當你想通了，並在graphviz web site提到，splines=ortho不與港口工作：

值鄰指定邊緣應路由爲軸線對齊段折線。目前，路由不處理端口或點，邊緣標籤。

如果您必須使用graphviz，則可以考慮添加其他節點。 This answer包含一個使用這種技術的例子。