Jeong Dal

21. Januar 2016 um 15:55

Thanks Hans, Wolfgang, Luigi

The new beta with Luatex 0.88 makes \fieldstacks and \startanimation work.

The following example of Wolfgang is now working well.

\def\MyGraphics#1{%

\startMPcode

path p,q;

p:=fullcircle scaled 72;

L:=length p;

N:=20;

q:=subpath (0,#1/N*L) of p;

draw q withcolor red;

fill fullcircle scaled 3 shifted point length q of q withcolor blue;

setbounds currentpicture to unitsquare shifted (-0.5,-0.5) scaled 75;

\stopMPcode}

\usemodule[animation]

\setupinteraction[state=start]

\starttext

\startanimation[menu=yes]

{\MyGraphics {5}}

{\MyGraphics {10}}

{\MyGraphics {15}}

{\MyGraphics {20}}

\stopanimation

\stoptext

One more question. Is there any convenient way to list \MyGraphics{#1}? I tried \dorecurse, but it just display figures one by one.  I also tried lua, but it stops with the error message  “unexpected symbol near ‘\'”.