Jeong Dal schrieb am 13.07.2021 um 12:25:
> Dear Hans, Aditya,
>
> Now, I understand the stacking method.
> I made a simple animation using it.
>
> \startuseMPgraphic{demo}
> for i=1 upto 10:
> draw fullcircle scaled (.3*i*cm) withcolor (.1*i*red) withpen 
> pencircle scaled (.5*bp) withstacking i;
> endfor;
> \stopuseMPgraphic
> \setupinteraction[state=start]
> \usemodule[animation]
> \starttext
> \startanimation[menu=yes]
> % \dorecurse{10}
> % { {\useMPgraphic[stacking={#1}]{demo}}}
> {\useMPgraphic[stacking={1}]{demo}}
> {\useMPgraphic[stacking={2}]{demo}}
> {\useMPgraphic[stacking={3}]{demo}}
> {\useMPgraphic[stacking={4}]{demo}}
> {\useMPgraphic[stacking={5}]{demo}}
> {\useMPgraphic[stacking={6}]{demo}}
> {\useMPgraphic[stacking={7}]{demo}}
> {\useMPgraphic[stacking={8}]{demo}}
> {\useMPgraphic[stacking={9}]{demo}}
> {\useMPgraphic[stacking={10}]{demo}}
> \stopanimation
> \stoptext
>
> However, I cannot succeed to use \dorecurse to make the code simple.
> If there is another good method, please let me know.

\dorecurse {...} {\frame{...}}

Wolfgang