Source : constantes.mp

%Constantes
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,gris;
rouge=(1,0,0);
bleu=(0,0,1);
noir=(0,0,0);
blanc=(1,1,1);
orange=(1,0.5,0);
violet=blanc-vert;
rose=(1,0.7,0.7);
ciel=0.9*(0.25,1,1);
orangevif=(1,0.25,0.1);
vert=(0,1,0);
jaune=blanc-rouge;
gris=0.8*white;
endinput;