%% PhS
%%
%% échelle et étendue de l'image
60 setxunit
-1.5 6 setxrange
-1.5 3 setyrange
/xgauche -6 def %% c'est la limite gauche de l'image
/xdroite 6 def %% c'est la limite droite de l'image
/ybasse -4 def %% c'est la limite basse de l'image
/yhaute 4 def %% c'est la limite haute de l'image
10 4 point
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% DANGER !! Il ne faut pas utiliser de variables
%% DANGER !! qui commence par les lettres :
%% DANGER !! xmin, xmax, ymin et ymax...
%% DANGER !! Utiliser x_min, y_min...
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% plages initiales pour les paramètres (peuvent être modifiées pour chaque fonctions tracées
/x_min -5 def
/x_max 5 def
/t_min -9 def
/t_max 9 def
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% procédures
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% on donne ici x(t)
/xdet {
1 dict begin
/t exch def
t
end
} def
%% on donne ici y(t)
/ydet {
1 dict begin
/t exch def
t dup mul dup 1 add div t abs sqrt mul 0.5 sub 1.5 mul t 0.1 mul add
end
} def
%% dessine un bout de droite
/bddroite { %% Ax Ay Bx By kg (=proportion vers A) kd (=prop vers B)
8 dict begin
/kd exch def
/kg exch def
/By exch def
/Bx exch def
/B {Bx By} def
/Ay exch def
/Ax exch def
/A {Ax Ay} def
gsave
[A A B vecteur kg mulv addv A A B vecteur kd mulv addv] ligne
grestore
end
} def
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% définitions des couleurs
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
/coul1 {120 255 div 70 255 div 9 255 div setrgbcolor} def
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% tracés
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% tracé des axes et du point Origine
1 setlinewidth
15 setfontsize
noir
continu
traceaxes
marks
tracerepere
2 setlinewidth
coul1
continu
-2 6 settrange
{xdet} {ydet} courbeparam
1 setlinewidth
noir
[1.5 dup ydet 4.4 dup ydet] (-) ligne
vert
pointilles
[1.5 0 1.5 dup ydet ] (-) ligne
[4.4 0 4.4 dup ydet ] (-) ligne
noir
[1.5 dup ydet 4.4 dup ydet] points
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% texte
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
setTimesItalic
noir
$\mathcal{C}_f$
1 1.5 [2.5 dup] cctexlabel
vert
$x$
1.5 -0.25 [2 dup] cctexlabel
vert
$x'$
4.4 -0.2 [2 dup] cctexlabel