Fichier hyperbole_03.jps — Modifié le 26 Juin 2006 à 14 h 57
%% PhS
%% fig_conique_04
35 setxunit
-8 8 setxrange
-6.5 6.5 setyrange
/bddroite {
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
%% definition des points
/a {3} def
/c {3.8} def
/b {c c mul a a mul sub sqrt} def
/e {c a div} def
/Kx {a e div} def
/K {Kx neg 0} def
/K+ {K 0 6 addv} def
/K- {K 0 -6 addv} def
/Kp {Kx 0} def
/Kp+ {Kp 0 6 addv} def
/Kp- {Kp 0 -6 addv} def
/O {0 0} def
/F {c neg 0} def
/Fp {c 0} def
/S1 {a neg 0} def
/S2 {a 0} def
/B {0 b} def
/R11 {a neg b} def
/R12 {a b} def
/R21 {a neg b neg} def
/R22 {a b neg} def
/omeg {F O milieu} def
/Ry {1 e e mul 1 exch div sub sqrt a mul} def
/R {Kx neg Ry} def
/xdet {settvar t t mul b b mul div 1 add sqrt a mul} def
/ydet {settvar t} def
/Mx {b 1.3 mul xdet} def
/My {b 1.3 mul ydet} def
/M {Mx My} def
/H {M Kp Kp+ orthoproj} def
%% traces
/coul1 {188 255 div 128 255 div 9 255 div setrgbcolor} def
[O F Fp S1 S2 B K Kp M] points
F Fp -0.5 1.5 bddroite
[O 0 -6.5 addv O 0 6.5 addv] ligne
b -2.2 mul b 2.2 mul settrange
{xdet} {ydet} courbeparam
{xdet neg} {ydet} courbeparam
vert
[K+ K-] ligne
[Kp+ Kp-] ligne
rouge
[Fp M] ligne
Fp 1 0 addv Fp M 1 (->) tripointarc
bleu
pointilles
[R11 R12 R22 R21] polygone
continu
R11 R22 -1 2 bddroite
R12 R21 -1 2 bddroite
%% texte
setTimesItalic
noir
(O) O dltext
(F) Fp drtext
(B) B ultext
(M) M crtext
vert
(K) Kp dltext
(D') K 0 -5 addv [1.5 dup] cltext
(D) Kp 0 -5 addv [1.5 dup] crtext
rouge
<tex>
$ \theta $
</tex>
Fp 1.5 0.7 addv [2 dup] ultexlabel