path Ce[],Tr[],Cb[];
pair i;
i=(0,1);z0=(0,0);
numeric u,c,e,pi;
u=1cm;
pi=3.141592654;
e=2.718281828;
c=57.29578; % conversion d'un radian en degrés
color rouge,vert,bleu,jaune,noir,blanc,orange,rose,violet,ciel,orangevif;
rouge=(1,0,0);
bleu=(0,0,1);
noir=(0,0,0);
blanc=(1,1,1);
orange=(1,0.5,0);
violet=(0.9,0.1,0.9);
rose=(1,0.7,0.7);
ciel=0.9*(0.25,1,1);
orangevif=(1,0.25,0.1);
vert=(1,1,1)-violet;
jaune=(0.9,0.9,0.2);
endinput