[NTG-context] metafun- how to pass array as an argument
Dear all, I draw a simple figure using the code as below. In the code, I use for i = 3,5,0,2,1,7: in def draw_balls. However, if I can pass the array 3,5,0,2,1,7 as an argument for def draw_balls (expr n) and call draw_balls (3,5,0,2,1,7), then it can be used for different number of balls and number of boxes. Is there a way to do that or any suggestions? Thank you for reading. Regards, Dalyoung \startbuffer[a] path p; numeric bwidth, u, lastpoint; u :=1cm; p := fullcircle scaled .3u; lastpoint := 0; def draw_balls = %(expr s) draw (0,0) -- (0, u); for i=3,5,0,2,1,7: for j = 1 upto i: draw p shifted (lastpoint+.32*j*u,.3u); endfor; bwidth := .32i*u+.5u; draw (lastpoint,0) -- (lastpoint +bwidth,0) -- (lastpoint +bwidth,u); lastpoint := lastpoint+bwidth; endfor; enddef; draw_balls; \stopbuffer \starttext \processMPbuffer[a] \stoptext ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] metafun- how to pass array as an argument
Am 24.01.2011 13:18, schrieb dalyoung: \startbuffer[a] path p; numeric bwidth, u, lastpoint; u :=1cm; p := fullcircle scaled .3u; lastpoint := 0; def draw_balls = %(expr s) def draw_balls(text s) = draw (0,0) -- (0, u); for i=3,5,0,2,1,7: for i=s: for j = 1 upto i: draw p shifted (lastpoint+.32*j*u,.3u); endfor; bwidth := .32i*u+.5u; draw (lastpoint,0) -- (lastpoint +bwidth,0) -- (lastpoint +bwidth,u); lastpoint := lastpoint+bwidth; endfor; enddef; draw_balls; \stopbuffer \starttext \processMPbuffer[a] \stoptext works in mkii, but fails in mkiv. i use an outdated version (31.12.2010) here. ! LuaTeX error main ctx instance:1: attempt to call field 'feedback' (a nil value) stack traceback: main ctx instance:1: in main chunk. argument feedback(\currentMPgraphicname )} \processMPgraphic ...ntMPgraphicformat , \!!bs #1 ;\!!es , \!!bs \currentMPi... argument ...feedback(\currentMPgraphicname )}} \endMPgraphicgroup \secondoftwoarguments #1#2-#2 l.25 \processMPbuffer[a] ? best wishes, Peter ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] metafun- how to pass array as an argument
Am 24.01.2011 13:50, schrieb Peter Rolf: Am 24.01.2011 13:18, schrieb dalyoung: \startbuffer[a] path p; numeric bwidth, u, lastpoint; u :=1cm; p := fullcircle scaled .3u; lastpoint := 0; def draw_balls = %(expr s) def draw_balls(text s) = draw (0,0) -- (0, u); for i=3,5,0,2,1,7: for i=s: for j = 1 upto i: draw p shifted (lastpoint+.32*j*u,.3u); endfor; bwidth := .32i*u+.5u; draw (lastpoint,0) -- (lastpoint +bwidth,0) -- (lastpoint +bwidth,u); lastpoint := lastpoint+bwidth; endfor; enddef; draw_balls; draw_balls(3,5,0,2,1,7) sorry, i forgot to change this line. example code is attached for testing... \stopbuffer \starttext \processMPbuffer[a] \stoptext works in mkii, but fails in mkiv. i use an outdated version (31.12.2010) here. ! LuaTeX error main ctx instance:1: attempt to call field 'feedback' (a nil value) stack traceback: main ctx instance:1: in main chunk. argument feedback(\currentMPgraphicname )} \processMPgraphic ...ntMPgraphicformat , \!!bs #1 ;\!!es , \!!bs \currentMPi... argument ...feedback(\currentMPgraphicname )}} \endMPgraphicgroup \secondoftwoarguments #1#2-#2 l.25 \processMPbuffer[a] ? best wishes, Peter ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___ \startbuffer[a] path p; numeric bwidth, u, lastpoint; u :=1cm; p := fullcircle scaled .3u; lastpoint := 0; def draw_balls(text s) = draw (0,0) -- (0, u); for i=s: for j = 1 upto i: draw p shifted (lastpoint+.32*j*u,.3u); endfor; bwidth := .32i*u+.5u; draw (lastpoint,0) -- (lastpoint +bwidth,0) -- (lastpoint +bwidth,u); lastpoint := lastpoint+bwidth; endfor; enddef; draw_balls(3,5,0,2,1,7); \stopbuffer \starttext \processMPbuffer[a] \stoptext ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] metafun- how to pass array as an argument
Dear Peter, Thank you for your help. By changing (expr s) to (text s), it works! I am using ConTeXt Minimal and the luatex version is This is LuaTeX, Version beta-0.61.0-2010072816 Thank you again. Dalyoung ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
