Graphics, Figures & Tables ⇒ Arc from node to node.

[white_owl]

I need to draw an arc from one node to another, but however I choose angles for the arc() command, I can not seem to finish on my target node. And I am starting to think there should be another way to do it. Here is the graph I am trying to draw:

Code: Select all

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{positioning}
\begin{document}

\begin{tikzpicture}
\tikzstyle{dot} = [fill,draw, circle, minimum size=2pt, inner sep=0pt]
\node[dot, label=above:$a$] (a) {};
\node[dot, label=right:$b$] (b) [below right=of a] {};
\node[dot, label=above left:$d$] (d) [below left=of b] {};
\node[dot, label=below:$c$] (c) [below right=of d] {};
\node[dot, label=below:$e$] (e) [below left=of d] {};
\node[dot, label=left:$f$] (f) [above left=of d] {};
\draw (f) -- (a) -- (b) -- (f) -- (e) -- (c) -- (b) -- (d) --
     (e) to[out=160,in=180] (a)
      -- (d) -- (c);
\end{tikzpicture}

\end{document}

As you can see, the part of the path between nodes (e) and (a) has some kind of curving, but it does not look like an arc and it goes right across the label for node (f).
Is there a better way to draw path from (e) to (a) which will go around label for node (f) for sure, and will not force me to guess angles for the arc() command?

[frabjous]

Does it need to be an arc, precisely, or will an approximating Bézier curve suffice? I have in mind something like:

Code: Select all

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{positioning}
\begin{document}

\begin{tikzpicture}
\tikzstyle{dot} = [fill,draw, circle, minimum size=2pt, inner sep=0pt]
\node[dot, label=above:$a$] (a) {};
\node[dot, label=right:$b$] (b) [below right=of a] {};
\node[dot, label=above left:$d$] (d) [below left=of b] {};
\node[dot, label=below:$c$] (c) [below right=of d] {};
\node[dot, label=below:$e$] (e) [below left=of d] {};
\node[dot, label=left:$f$] (f) [above left=of d] {};
\draw (f) -- (a) -- (b) -- (f) -- (e) -- (c) -- (b) -- (d) --
     (e)  .. controls +(-1,1) and +(-2,0) .. (a) 
      -- (d) -- (c);
\end{tikzpicture}

\end{document}

It does seems like there should be a way to do it with the arc command, but I don't know how offhand. Maybe someone else will.

[white_owl]

Thank you very much.
That looks exactly like the picture I wanted.

[white_owl]

Actually no. In this particular case, the controls command was enough.
In my next graph I need to draw something very similar but the arc should be almost full circle, so two points of controls is not enough...

Let's say, how to add to the previous example nice overhead arcs from node (e) to (b) and from (e) to (c)?