Singular

LIB "tropical.lib";
==> Welcome to polymake version
==> Copyright (c) 1997-2015
==> Ewgenij Gawrilow, Michael Joswig (TU Darmstadt)
==> http://www.polymake.org
ring r=(0,t),(x,y),dp;
poly f=x+y+1;
string texf=texDrawTropical(tropicalCurve(f),list("",1));
texDrawBasic(texf);
==> 
==>     \begin{texdraw}
==>        \drawdim cm  \relunitscale 0.7 \arrowheadtype t:V
==>        %\linewd 0.05 \lpatt (0.1 0.4)
==>        %\move (-4 0) \avec (9 0) \move (0 -4) \avec (0 9)
==>        \linewd 0.1  \lpatt (1 0)
==>        
==> 
==>        \setgray 0.6
==> 
==>        
==>        \relunitscale 12
==>        \move (0 0) \fcir f:0 r:0.016
==>        \move (0 0) \rlvec (0 0.25)
==>        \move (0 0) \rlvec (0.25 0)
==>        \move (0 0) \rlvec (-0.25 -0.25)
==> 
==>    %% HERE STARTS THE CODE FOR THE LATTICE
==>         \move (0 0) \fcir f:0.8 r:0.008
==>    %% HERE ENDS THE CODE FOR THE LATTICE
==>                           
==>     \end{texdraw}