Neco do metapostu

[Matej Kosik]

pustofkj at inf.upol.cz wrote:
> Zdravim,... mam problem, v metapostu chci postupne vytvorit obrazek,...
> dam tedy:
> picture pic, pic1, pic2, pic3;
> pic1:=nullpicture;
> addto pic1 .........;
>
> pic2:=mullpicture;
> addto pic2 .........;
>
> pic:=nullpicture;
> addto pic also pic1;
> addto pic also pic2;
> addto pic also pic3;
>
> a ted je tu ten problem... pic3 by mel vypadat nejak takto:
> pair a, b, c, d;
> numeric s;
> a := (25mm,0);
> b := (0,50mm);
> c := (-25mm,0);
> d := (0,-50mm);
> s := 0.6;
> superellipse(a,b,c,d,s);
> a mel by byt vybarveny zlute... kdyz ale dam "addto pic3 contour
> superellipse(a,b,c,d,s);", tak to haze bug, nehlede na to, ze to chci
> vyplnene tou zlutou barvou... jak na to, aby to vse fungovalo tak jak ma?
> Dekuji.

Nie je jasne, co sa snazite nakreslit, ale
zltu elipsu by som kreslil nejako takto:

    u := 1cm;
    fill (2u,0)..(0,u)..(-2u,0)..(0,-u)..cycle withcolor green+red;