Présentation de 016.jps

/syracuse/bbgraf/albums/coniques_03/016.jpg
%% PhS %% fig_conique_15 45 setxunit 0 12 setxrange -1.5 7 setyrange %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% procÚdures %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% /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 d'une couleur %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% /coul1 {120 255 div 70 255 div 9 255 div setrgbcolor} def %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% definition des points %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% /H1 {0 0} def /H2 {11.7 0} def /V1 {2 -1.8} def /V2 {2 6.2} def /K {2 0} def /Fx {4} def /F {Fx 0} def /Sx {3} def /S {Sx 0} def /S+ {Sx 7} def /S- {Sx -2} def /D {1.8 6} def /p {2} def /e {1} def /A {p 2 mul Sx add dup Sx sub} def /Axx {p 2 mul Sx add 0} def /Ayy {Sx p 2 mul} def /B {p 2 div Sx add p} def /Byy {Sx p} def %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% parametrage de la parabole %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% /rhox {settvar t cos e mul neg 1 add 1 exch div p mul t cos mul} def /rhoy {settvar t cos e mul neg 1 add 1 exch div p mul t sin mul} def /Mx {70 rhox Fx add} def /My {70 rhoy} def /M {Mx My} def /H {M V1 V2 orthoproj} def /HFv {H F vecteur} def /HFg {HFv -0.2 mulv H addv} def /HFd {HFv 0.2 mulv F addv} def /I {H F milieu} def /T {V1 V2 M I interdroite} def /TMv {T M vecteur} def /TMg {TMv -0.5 mulv T addv} def /TMd {TMv 1.6 mulv M addv} def %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% tracÚs %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% continu 1 setlinewidth [K F M F S A Axx Ayy H I T B Byy] points [H1 H2] ( ->) ligne [V1 V2] ligne [S- S+] ( ->) ligne [M F] ligne [M H] ligne [HFg HFd] ligne [T F] ligne M H T angledroit M F T angledroit F I M angledroit coul1 2 setlinewidth 40 320 settrange {rhox Fx add} {rhoy} courbeparam 1 setlinewidth rouge continu [S Sx 0.8 add 0] ( ->) ligne [S Sx 0.8] ( ->) ligne orange [TMg TMd] ligne 0.6 setlinewidth vert pointilles [Axx A Ayy] ligne [F B Byy] ligne %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% texte %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% setTimesItalic noir (K) K [1.5 dup] dltext (F) F [1.5 dup] dltext (M) M -0.1 0.1 addv [1.5 dup] uctext (H) H -0.1 0 addv [1.5 dup] cltext (S) S [1.5 dup] dltext (T) T -0.1 0 addv [1.5 dup] cltext (I) I -0.1 0 addv [1.5 dup] cltext vert (-p/2) K (0 -15) [1.5 dup] dltext (p/2) F (0 -15) [1.5 dup] dltext (A) A [1.5 dup] drtext (2p) Axx [1.5 dup] dctext (2p) Ayy [1.5 dup] cltext (p) Byy [1.5 dup] cltext noir <latex> $ \mathcal{D} $ </latex> D [1.5 dup] cltexlabel <latex> $ \Delta $ </latex> (x) 11 0 [1.7 dup] dctexlabel