Zwiększenie separacji krawędzi w graphviz

Question

Tworzę kilka diagramów aktywności UML za pomocą dot-graphviz, a krawędzie/strzałki (2+) zbiegają się w tym samym punkcie, gdy docelowy kształt jest zwężonym prostokątem (H = 0,5, W = 0,05). Ten problem nie występuje, jeśli docelowy kształt jest kwadratem (H = 0,5, W = 0,5).

Tutaj jest zmniejszona przykład plamek:

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 ] 
} 

Powyższy tekst generuje następujący wykres w http://webgraphviz.com

Pożądana moc jest następujący

Answer 1

znalazłem wariację, która produkuje ładne wyjście, ale wymaga dużo przetwarzania i krawędź-count i kierunek świadomości:

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 ] 
} 

To jest wyjście:

Chciałbym jeszcze Chciałbym wiedzieć, czy istnieje prostsze rozwiązanie.

Answer 2

można określić port wyjściowy wszystkich krawędziach do east i dostać preaty piękny rezultat (przynajmniej w tym przypadku):

digraph G { 
     graph [ ranksep = 0.5, rankdir = LR ] 
     edge [tailport=e]     # <----- added this line 
     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 ] 
} 

produce: