Fichier 147.jps — Modifié le 11 Mars 2006 à 10 h 53
%% PhS
%%
%% échelle et étendue de l'image
50 setxunit
-0.5 4.5 setxrange
-.5 3.5 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
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%% 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...
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%% 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
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%% procédures
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%% on donne ici x(t)
/xdet {
1 dict begin
/t exch def
1 3.3 t sub div -0.5 add
end
} def
%% on donne ici y(t)
/ydet {
1 dict begin
/t exch def
t -0.3 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
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%% définitions des couleurs
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/coul1 {120 255 div 70 255 div 9 255 div setrgbcolor} def
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%% tracés
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%% tracé des axes et du point Origine
1 setlinewidth
15 setfontsize
noir
continu
%%traceaxes
%%marks
tracerepere
2.5 setlinewidth
coul1
continu
0 3.29 settrange
{xdet} {ydet} courbeparam
rouge
1 setlinewidth
pointilles
[-1 2.9 5 2.9] (-) ligne
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%% texte
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setTimesItalic