graphviz - 增加graphviz中边的分离

Question

我正在创建几个带有 dot-graphviz 的 UML 事件图，每当目标形状是窄矩形(H=0.5，W=0.05)时，边/箭头(2+)会聚在同一点。如果目标形状是正方形(H=0.5，W=0.5)，则不会出现此问题。

这是一个减少的点示例:

digraph G {
graph [ ranksep = 0.5, rankdir = LR ]
A4 [ shape = "record", height = 0.5, fontsize = 10, margin = "0.20,0.05", label = "Output\ to\rPreviewer", style = "rounded" ]
A5 [ shape = "rectangle", height = 0.5, width = 0.05, margin = "0,0", style = "filled", label = "" ]
A4 -> A5 [ shape = "edge", dir = "both", style = "solid", arrowtail = "none", arrowhead = "vee", labeldistance = 1, fontsize = 10 ]
A6 [ shape = "diamond", height = 0.5, width = 0.5, margin = "0,0", label = "" ]
A6 -> A5 [ shape = "edge", dir = "both", style = "solid", arrowtail = "none", arrowhead = "vee", labeldistance = 1, fontsize = 10, label = "[generate: false]" ]
A7 [ shape = "record", height = 0.5, fontsize = 10, margin = "0.20,0.05", label = "Output\ to\rFile", style = "rounded" ]
A6 -> A7 [ shape = "edge", dir = "both", style = "solid", arrowtail = "none", arrowhead = "vee", labeldistance = 1, fontsize = 10, label = "[generate: true]" ]
A8 [ shape = "doublecircle", height = 0.3, width = 0.3, margin = "0,0", label = "" ]
A7 -> A5 [ shape = "edge", dir = "both", style = "solid", arrowtail = "none", arrowhead = "vee", labeldistance = 1, fontsize = 10 ]
A5 -> A8 [ shape = "edge", dir = "both", style = "solid", arrowtail = "none", arrowhead = "vee", labeldistance = 1, fontsize = 10 ]
}

上面的文本在 http://webgraphviz.com 中生成了下图



理想的输出如下

Answer 1

我发现了一个可以产生不错输出的调整，但需要大量处理以及边缘计数和方向意识:

digraph G {
graph [ ranksep = 0.5, rankdir = LR ]
A4 [ shape = "record", height = 0.5, fontsize = 10, margin = "0.20,0.05", label = "Output\ to\rPreviewer", style = "rounded" ]
A5 [ shape = "record", height = 0.5, width = 0.05, margin = "0,0", style = "filled", label = "<f0>|<f1>|<f2>", fillcolor="black" ]
A4 -> A5:f0:w [ shape = "edge", dir = "both", style = "solid", arrowtail = "none", arrowhead = "vee", labeldistance = 1, fontsize = 10 ]
A6 [ shape = "diamond", height = 0.5, width = 0.5, margin = "0,0", label = "" ]
A6 -> A5:f1:w [ shape = "edge", dir = "both", style = "solid", arrowtail = "none", arrowhead = "vee", labeldistance = 1, fontsize = 10, label = "[generate: false]" ]
A7 [ shape = "record", height = 0.5, fontsize = 10, margin = "0.20,0.05", label = "Output\ to\rFile", style = "rounded" ]
A6 -> A7 [ shape = "edge", dir = "both", style = "solid", arrowtail = "none", arrowhead = "vee", labeldistance = 1, fontsize = 10, label = "[generate: true]" ]
A8 [ shape = "doublecircle", height = 0.3, width = 0.3, margin = "0,0", label = "" ]
A7 -> A5:f2:w [ shape = "edge", dir = "both", style = "solid", arrowtail = "none", arrowhead = "vee", labeldistance = 1, fontsize = 10 ]
A5 -> A8 [ shape = "edge", dir = "both", style = "solid", arrowtail = "none", arrowhead = "vee", labeldistance = 1, fontsize = 10 ]
}

这是输出:



我仍然想知道是否有更简单的解决方案。