I (metapost) can't handle numbers bigger than 32767.99998
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Hi everyone, I was using metapost to generate some symbols, as in "tex/texmf-context/metapost/context/fonts/mpiv/demo-symbols.tex" Occasionally, I want to customize a glyph whose charcode is a little large, say the character "院": ======================================== ~~~IPython In [1]: for c in u'院': print(ord(c)) 38498 ======================================== so I wrote: ======================================== beginglyph(38498,2,4,0) ; % high voltage interim ahlength := 1 ; drawarrow (1,4) -- (0,2) -- (2,3) -- (1,0) withcolor darkred ; endglyph ; ======================================== and I got: ======================================== ! Enormous number has been reduced. l.60 beginzhglyph(38498 ); I can't handle numbers bigger than 32767.99998; so I've changed your constant to that maximum amount. ======================================== So charcode is a 15-bit integer? Currently, I use `beginglyph(32767,2,4,0) ;` and call it with \char"7FFF. Not an elegant way I think. Is there a fix? I checked the metapost manual and found that charcode is only used to set the filename to something like %{jobname}.%{charcode} I can't see why there's a limit for charcode.
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On 7/5/2019 8:32 AM, Zhichu wrote:
Hi everyone,
I was using metapost to generate some symbols, as in "tex/texmf-context/metapost/context/fonts/mpiv/demo-symbols.tex"
How do you use these symbols in a document? Do you call them up by number somehow? Using some glyph interface doesn't make much sense I think, as the font stuff comes from mf which is 8 bit. So, these character numbers (and simensions) are not really saying much, other than that they're properties of a figure. (In context lmtx there will likely be some module for mp fonts. We can already do a lot but there is some more potential.) Hans
Occasionally, I want to customize a glyph whose charcode is a little large, say the character " 院": ======================================== ~~~IPython In [1]: for c in u'院': print(ord(c)) 38498 ========================================
so I wrote: ======================================== beginglyph(38498,2,4,0) ; % high voltage interim ahlength := 1 ; drawarrow (1,4) -- (0,2) -- (2,3) -- (1,0) withcolor darkred ; endglyph ; ========================================
and I got: ======================================== ! Enormous number has been reduced. l.60 beginzhglyph(38498 ); I can't handle numbers bigger than 32767.99998; so I've changed your constant to that maximum amount. ========================================
So charcode is a 15-bit integer?
Currently, I use `beginglyph(32767,2,4,0) ;` and call it with \char"7FFF. Not an elegant way I think.
Is there a fix? I checked the metapost manual and found that charcode is only used to set the filename to something like %{jobname}.%{charcode} I can't see why there's a limit for charcode.
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Hi Hans,
I simply put the unicode character there and everything works pretty well.
I was using only 5 Chinese characters in a document: 中國科學院, which means Chinese Academy of Sciences. Looked up their unicode number:
for c in u'中國科學院': print(ord(c))
20013
22283
31185
23416
38498
and draw every glyph carefully in a metapost file "cas-chars.mp":
beginglyph(20013,1000,1000,0);
% a lot of fillings and drawingsendglyph;
then call them in a test file:
\definemetafont[cas-logo][cas-chars.mp]
\startTEXpage
\definefont[cas][cas@cas-logo]
\cas 中國科學院\stopTEXpage
If I remove the beginglyph(38498,1000,1000,0) part in the mp file and “\cas 中國科學” will generate the correct output. or if I change beginglyph(38498,1000,1000,0) to beginglyph(32767,1000,1000,0) and “\cas 中國科學\char"7FFF” also gives the right output.
I'm looking forward to “some” module :-)
------------------------------------------------------------------
From:Hans Hagen
Hi everyone,
I was using metapost to generate some symbols, as in "tex/texmf-context/metapost/context/fonts/mpiv/demo-symbols.tex"
How do you use these symbols in a document? Do you call them up by number somehow? Using some glyph interface doesn't make much sense I think, as the font stuff comes from mf which is 8 bit. So, these character numbers (and simensions) are not really saying much, other than that they're properties of a figure. (In context lmtx there will likely be some module for mp fonts. We can already do a lot but there is some more potential.) Hans
Occasionally, I want to customize a glyph whose charcode is a little large, say the character " 院": ======================================== ~~~IPython In [1]: for c in u'院': print(ord(c)) 38498 ========================================
so I wrote: ======================================== beginglyph(38498,2,4,0) ; % high voltage interim ahlength := 1 ; drawarrow (1,4) -- (0,2) -- (2,3) -- (1,0) withcolor darkred ; endglyph ; ========================================
and I got: ======================================== ! Enormous number has been reduced. l.60 beginzhglyph(38498 ); I can't handle numbers bigger than 32767.99998; so I've changed your constant to that maximum amount. ========================================
So charcode is a 15-bit integer?
Currently, I use `beginglyph(32767,2,4,0) ;` and call it with \char"7FFF. Not an elegant way I think.
Is there a fix? I checked the metapost manual and found that charcode is only used to set the filename to something like %{jobname}.%{charcode} I can't see why there's a limit for charcode.
___________________________________________________________________________________ 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://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___________________________________________________________________________________
-- ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl ----------------------------------------------------------------- ___________________________________________________________________________________ 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://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___________________________________________________________________________________
participants (2)
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Hans Hagen
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Zhichu