math problems in last beta (cont-en and cont-xp)

math problems in last beta (cont-en and cont-xp)

[Lutz Haseloff]

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Hi Hans, hi Taco, hi all,

testing math with the latest ConTeXt beta i found some problems.
My test file is:

\usetypescriptfile[type-buy]
\def\currentfontname
{\ctxlua{tex.print(font.getfont(font.current()).fullname)}}
\starttext
\startbuffer[mathbuffer]
\currentfontname

$a^2 + b^2 = c^2$

$E = mc^2 \bigotimes \sum$

$α^2 + β^2 = γ^2$
\blank[big]
\stopbuffer
\getbuffer[mathbuffer]
\usetypescript[lucida][texnansi]
\setupbodyfont[lucida]
\getbuffer[mathbuffer]
\usetypescript[cambria]
\switchtotypeface[cambria]
\getbuffer[mathbuffer]
\usetypescript[palatino]
\switchtotypeface[palatino]
\getbuffer[mathbuffer]
\stoptext

Latin Modern and Palatino/px work very fine.

Lucida lacks greek and some operators. I found no embedded LucidaNewMath
fonts
in the resulting pdf.

Cambria has a very ugly spacing.

btw. in the wiki is described a ConTeXt command \showmathcharacters.
This seems not to work anymore. The related file math-run.tex is not
input at the time of format generation.

Greetings Lutz

P.S. will the key [texnansi] (or [ec]) remain necessary to switch to
LucidaBright?

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Re: math problems in last beta (cont-en and cont-xp)

[Aditya Mahajan]

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On Mon, 23 Mar 2009, Lutz Haseloff wrote:

> Hi Hans, hi Taco, hi all,
>
> testing math with the latest ConTeXt beta i found some problems.
> My test file is:
>
> \usetypescriptfile[type-buy]
> \def\currentfontname
> {\ctxlua{tex.print(font.getfont(font.current()).fullname)}}
> \starttext
> \startbuffer[mathbuffer]
> \currentfontname
>
> $a^2 + b^2 = c^2$
>
> $E = mc^2 \bigotimes \sum$
>
> $α^2 + β^2 = γ^2$
> \blank[big]
> \stopbuffer
> \getbuffer[mathbuffer]
> \usetypescript[lucida][texnansi]
> \setupbodyfont[lucida]
> \getbuffer[mathbuffer]
> \usetypescript[cambria]
> \switchtotypeface[cambria]
> \getbuffer[mathbuffer]
> \usetypescript[palatino]
> \switchtotypeface[palatino]
> \getbuffer[mathbuffer]
> \stoptext

For using old type-1 math fonts, you need to create virtual fonts.

> Latin Modern and Palatino/px work very fine.

For LM, Palatino, and Times, the virtual fonts are created in math-vfu.lua

> Lucida lacks greek and some operators. I found no embedded LucidaNewMath
> fonts
> in the resulting pdf.

There are no virtual fonts for Lucida math. In principle, one just needs 
to translate math-lbr to lua syntax. I will try to do that, but I need 
someone to test the results, since I do not have Lucida fonts myself.

> Cambria has a very ugly spacing.

Luatex does not do kerning for utf math right now. This will be handled 
correcrly in the future.

> btw. in the wiki is described a ConTeXt command \showmathcharacters.
> This seems not to work anymore. The related file math-run.tex is not
> input at the time of format generation.

\ShowCompleteFont{name:Cambria-Math}{10pt}{1}

> P.S. will the key [texnansi] (or [ec]) remain necessary to switch to
> LucidaBright?

For text fonts, yes. Normally math fonts use an independent encoding.

Aditya

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___________________________________________________________________________________

Re: math problems in last beta (cont-en and cont-xp)

[Hans Hagen]

Lutz Haseloff wrote:

> Lucida lacks greek and some operators. I found no embedded LucidaNewMath
> fonts
> in the resulting pdf.

not defined at all (yet) (see end of math-vfu for how to do that; you 
can give lucida a try)

> Cambria has a very ugly spacing.

hm, do you have the latest cambria? there might be problems with some 
otf math parameters but we need examples before we can act on that

> btw. in the wiki is described a ConTeXt command \showmathcharacters.
> This seems not to work anymore. The related file math-run.tex is not
> input at the time of format generation.

in mkiv we wil use modules for that ... s-fnt-25 is for math

> P.S. will the key [texnansi] (or [ec]) remain necessary to switch to
> LucidaBright?

no


-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
      tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
                                              | 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
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___________________________________________________________________________________

Re: math problems in last beta (cont-en and cont-xp)

[Lutz Haseloff]

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Hi all,

2009/3/23 Hans Hagen <pragma@wxs.nl>

> Lutz Haseloff wrote:
>
>  Lucida lacks greek and some operators. I found no embedded LucidaNewMath
>> fonts
>> in the resulting pdf.
>>
>
> not defined at all (yet) (see end of math-vfu for how to do that; you can
> give lucida a try)
>

I tried that, but it seems not enough to define:

mathematics.make_font ( "lucida-math", {
    { name = "lucidabright", features = "virtualmath", main = true },
    { name = "lucidanewmathroman", vector = "traditional-mr" } ,
    { name = "lucidanewmathitalic", vector = "traditional-mi", skewchar=0x7F
},
    { name = "lucidanewmathsymbol", vector = "traditional-sy",
skewchar=0x30, parameters = true } ,
    { name = "lucidanewmathextension", vector = "traditional-ex", extension
= true } ,
    { name = "msam10", vector = "traditional-ma" },
    { name = "msbm10", vector = "traditional-mb" },
} )

(I don't know in which of the lucida fontfiles the symbols a and b are
located.)

I would be glad to test math for the good old LucidaBright fonts.
I'm not smart enough to prepare this myself.


>
>
>  Cambria has a very ugly spacing.
>>
>
> hm, do you have the latest cambria? there might be problems with some otf
> math parameters but we need examples before we can act on that
>

I had an old version of cambria cached in

C:\contextminimal\texmf-cache\luatex-cache\context\...\fonts

After deleting them spacing is ok. But the \bigotimes operator from my
example file now disappeared.



>
>
>  btw. in the wiki is described a ConTeXt command \showmathcharacters.
>> This seems not to work anymore. The related file math-run.tex is not
>> input at the time of format generation.
>>
>
> in mkiv we wil use modules for that ... s-fnt-25 is for math
>

Should I send the output of:

\usetypescript[cambria]
\setupbodyfont[cambria]
\usemodule[fnt-25]
\starttext
\showmathfontcharacters
\stoptext

to somebody? (130 pages, 458 kB)


>
>
>  P.S. will the key [texnansi] (or [ec]) remain necessary to switch to
>> LucidaBright?
>>
>
> no
>
>
> -----------------------------------------------------------------
>                                          Hans Hagen | PRAGMA ADE
>              Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
>     tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
>                                             | 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://tex.aanhet.net
> archive  : https://foundry.supelec.fr/projects/contextrev/
> wiki     : http://contextgarden.net
>
> ___________________________________________________________________________________
>

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___________________________________________________________________________________
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
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archive  : https://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________