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% language=us
\environment luametafun-style
\startcomponent luametafun-groups
\startchapter[title={Groups}]
This is just a quick example of an experimental features.
\startbuffer
\startMPcode
fill fullcircle scaled 2cm shifted ( 5mm,2cm) withcolor "darkblue" ;
fill fullcircle scaled 2cm shifted (15mm,2cm) withcolor "darkblue" ;
fill fullcircle scaled 2cm shifted ( 5mm,-2cm) withcolor "darkgreen" ;
fill fullcircle scaled 2cm shifted (15mm,-2cm) withcolor "darkgreen" ;
draw image (
fill fullcircle scaled 4cm withcolor "darkred" ;
fill fullcircle scaled 4cm shifted (2cm,0) withcolor "darkred" ;
setgroup currentpicture to boundingbox currentpicture
withtransparency (1,.5) ;
) ;
draw image (
fill fullcircle scaled 3cm withcolor "darkyellow"
withtransparency (1,.5) ;
fill fullcircle scaled 3cm shifted (2cm,0) withcolor "darkyellow"
withtransparency (1,.5) ;
) ;
addbackground withcolor "darkgray" ;
\stopMPcode
\stopbuffer
\typebuffer[option=TEX]
A group create an object that when transparency is applied is treated as
a group.
\startlinecorrection
\getbuffer
\stoplinecorrection
(Groups might become more powerful in the future, like reusable components but
then some more juggling is needed.)
\stopchapter
\stopcomponent
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