LaTeX LaTeX question about Feynman Diagrams

[ChrisVer]

Has anyone of you tried to work with creating Feynman Graphs in LaTeX?

I tried using the feynmf package, as explained here:
https://www.sharelatex.com/learn/Feynman_diagrams
and used the same introductory script:
\begin{fmffile*}{diagram}
\begin{fmfgraph}(40,25)
\fmfleft{i1,i2}
\fmfright{o1,o2}
\fmf{fermion}{i1,v1,o1}
\fmf{fermion}{i2,v2,o2}
\fmf{photon}{v1,v2}
\end{fmfgraph}
\end{fmffile*}

Trying to run it like this doesn't work, and during compiling I get the message that (\begin{fmffile*}{diagram}) is wrong... After removing the *, the compiling works, but I get a very weird graph which:
1. Is very small
2. I am not able to interfere with... (like changing the lines-vertices)

Has anyone ever had that problem? any way to solve it?

 

[Orodruin]

I have no experience with feynmf, I usually use axodraw and it works reasonably.

 

[ChrisVer]

Do you understand what the procedure:
"latex-dvips-ps2pdf route"
means? Because TeX won't make axodraw work with pdflatex...

 

[kith]

I vaguely remember that I had to run metafont (?) whenever I changed something in a fmffile-environment before running pdflatex.