\input fig4tex.tex
%%%%%%%%%%%%%%%% debut du dessin
%%%%%%%%%%%%%%%%%%%%%%%%%
% pts caracteristiques
%%%%%%%%%%%%%%%%%%%%%%%%%
% axes et origine
\figinit{truecm}
\figpt 1:(-2,0)\figpt 2:(2,0)\figpt 3:(0,2)\figpt 4:(0,-2)
\figpt 5:(0,0)\figpt 13:(0,1.5)
% pt du cercle
\figptell 6::5;1.5,1.5(60,0)
% sa proj. ortho sur l'axe ds abscisses
\figptorthoprojline 7:=6/1,2/
%
\figpt 8:(1.5,0)\figvectP 9[4,3]\figvectP 10[5,6]
\figptinterlines 11:[8,9;5,10]
%%%%%%%%%%%%%%%%%%%%%%%%%
% fichier graphique
%%%%%%%%%%%%%%%%%%%%%%%%%
\figdrawbegin{}
% trace des axes
\figdrawline[1,2]\figdrawline[3,4]
%\figset arrowhead(fillmode=yes)
\figdrawarrowhead[5,8]\figdrawarrowhead[5,13]
% trace du cercle
\figdrawcirc 5(1.5)
% trace
\figdrawline[6,7]\figdrawline[5,11,8]
\figdrawend
%%%%%%%%%%%%%%%%%%%%%%%%%
% writing
%%%%%%%%%%%%%%%%%%%%%%%%%
\figvisu{\figBoxA}{}{
\figset write(mark=$\bullet$)
\figwritese 5:$O$(0.1)\figwritee 6:$M$(0.1)\figwrites 7:$H$(0.1)
\figwritee 11:$T$(0.1)\figwritese 8:$A$(0.1) }
%%%%%%%%%%%%%%%%%%%%%%% fin du dessin
\centerline{\box\figBoxA}
\bye