Hello everyone,
I tested the code and it does not work: I get one page with buttons for
animation is not working.
thank you,
Fabrice

\def\MyGraphics#1{%
\unexpanded\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

fab@debian:~$ context ntg43.tex

resolvers       | trees | analyzing 'home:texmf'
mtx-context     | run 1: luatex
--fmt="/home/fab/context/tex/texmf-cache/luatex-cache/context/5fe67e0bfe781ce0dde776fb1556f32e/formats/luatex/cont-en"
--jobname="ntg43"
--lua="/home/fab/context/tex/texmf-cache/luatex-cache/context/5fe67e0bfe781ce0dde776fb1556f32e/formats/luatex/cont-en.lui"
--no-parse-first-line --c:currentrun=1 --c:fulljobname="./ntg43.tex"
--c:input="./ntg43.tex" --c:kindofrun=1 --c:maxnofruns=9 "cont-yes.mkiv"
This is LuaTeX, Version beta-0.88.0 (TeX Live 2016/dev)
 system commands enabled.

resolvers       > trees > analyzing 'home:texmf'

system          > callbacks > not registering frozen 'find_format_file'
open source     > 1 > 1 >
/home/fab/context/tex/texmf-context/tex/context/base/mkiv/cont-yes.mkiv

ConTeXt  ver: 2016.01.18 22:21 MKIV beta  fmt: 2016.1.22  int:
english/english

system          > 'cont-new.mkiv' loaded
open source     > 2 > 2 >
/home/fab/context/tex/texmf-context/tex/context/base/mkiv/cont-new.mkiv
close source    > 2 > 2 >
/home/fab/context/tex/texmf-context/tex/context/base/mkiv/cont-new.mkiv
system          > files > jobname 'ntg43', input './ntg43', result 'ntg43'
fonts           > latin modern fonts are not preloaded
languages       > language 'en' is active
open source     > 2 > 3 > /home/fab/ntg43.tex
resolvers       > modules > 'animation' is loaded
open source     > 3 > 4 >
/home/fab/context/tex/texmf-modules/tex/context/third/animation/t-animation.mkvi
close source    > 3 > 4 >
/home/fab/context/tex/texmf-modules/tex/context/third/animation/t-animation.mkvi
fonts           > preloading latin modern fonts (second stage)
fonts           > 'fallback modern-designsize rm 12pt' is loaded
open source     > 3 > 5 >
/home/fab/context/tex/texmf-context/tex/context/base/mkiv/java-imp-fld.mkiv
close source    > 3 > 5 >
/home/fab/context/tex/texmf-context/tex/context/base/mkiv/java-imp-fld.mkiv
interactions    > javascripts > loaded: library 'fld'
backend         > xmp > using file
'/home/fab/context/tex/texmf-context/tex/context/base/mkiv/lpdf-pdx.xml'
pages           > flushing realpage 1, userpage 1
close source    > 2 > 5 > /home/fab/ntg43.tex
close source    > 1 > 5 >
/home/fab/context/tex/texmf-context/tex/context/base/mkiv/cont-yes.mkiv

mkiv lua stats  > used config file: selfautoparent:/texmf/web2c/texmfcnf.lua
mkiv lua stats  > used cache path:
/home/fab/context/tex/texmf-cache/luatex-cache/context/5fe67e0bfe781ce0dde776fb1556f32e
mkiv lua stats  > resource resolver: loadtime 0.025 seconds, 1 scans with
scantime 0.013 seconds, 0 shared scans, 13 found files, scanned paths:
/home/fab/texmf
mkiv lua stats  > stored bytecode data: 383 modules (0.240 sec), 81 tables
(0.011 sec), 464 chunks (0.251 sec)
mkiv lua stats  > traced context: maxstack: 1169, freed: 9, unreachable:
1160
mkiv lua stats  > cleaned up reserved nodes: 42 nodes, 9 lists of 443
mkiv lua stats  > node memory usage: 2 glue, 2 penalty, 9 attribute, 27
glue_spec, 3 attribute_list, 2 temp, 1 pdf_literal
mkiv lua stats  > node list callback tasks: 6 unique task lists, 6
instances (re)created, 44 calls
mkiv lua stats  > used backend: pdf (backend for directly generating pdf
output)
mkiv lua stats  > jobdata time: 0.001 seconds saving, 0.000 seconds loading
mkiv lua stats  > callbacks: 226 direct, 1256 indirect, 1482 total
mkiv lua stats  > randomizer: resumed with value 0.6945844393664
mkiv lua stats  > loaded tex modules: 1 requested, all found (*-animation)
mkiv lua stats  > loaded patterns: en::2, load time: 0.000
mkiv lua stats  > interactive elements: 5 references, 0 destinations
mkiv lua stats  > result saved in file: ntg43.pdf, compresslevel 3,
objectcompresslevel 3
mkiv lua stats  > loaded fonts: 3 files: contnav.afm, latinmodern-math.otf,
lmroman12-regular.otf
mkiv lua stats  > font engine: otf 3.012, afm 1.500, tfm 1.000, 5
instances, load time 0.196 seconds
mkiv lua stats  > pdf annotations: 5 links (5 unique), 4 special
mkiv lua stats  > used platform: linux-64, type: unix, binary subtree:
texmf-linux-64
mkiv lua stats  > luatex banner: this is luatex, version beta-0.88.0 (tex
live 2016/dev)
mkiv lua stats  > control sequences: 43642 of 65536 + 100000
mkiv lua stats  > lua properties: engine: lua, used memory: 57 MB (ctx: 57
MB), hash type: lua, hash chars: min(64,40), symbol mask: utf (τεχ)
mkiv lua stats  > runtime: 0.516 seconds, 1 processed pages, 1 shipped
pages, 1.938 pages/second

system          | total runtime: 0.742 seconds


2016-01-22 15:45 GMT+01:00 Jeong Dal <haksan@me.com>:

> Dear Hans, Wolfgang
>
> Thank you for the solutions.
>
> “\unexpanded …” method is working well.
>
> It can make the class materials more interesting.
>
> Thanks again.
>
> Best regards,
>
> Dalyoung
>
>
>
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