/width 300 def
/height 300 def
/border 7.5 def
-1.5 1.5 setxrange
-1.5 1.5 setyrange
jpegmode
/X {settvar
t Cos 3 exp
} def
/Y {settvar
t Sin 3 exp
} def
0 2 pi mul settrange
/dessin {
tracerepere
marks
1.5 setlinewidth
continu
bleu
{X} {Y} courbeparam
} def
{dessin} relief
|