Re: Going crazy with font conversion (macron)!

Re: Going crazy with font conversion (macron)!

[Steffen Wolfrum]

BTW:

Is there also a command to translate TFM (and VF) files to AFM or 
another human readable format and back again?

Steffen

Re: Going crazy with font conversion (macron)!

[Taco Hoekwater]

Steffen Wolfrum wrote:
> BTW:
> 
> Is there also a command to translate TFM (and VF) files to AFM or 
> another human readable format and back again?

There exist the Knuthian programs tftopl (for tfm only) and
vftovp (for virtual fonts) that convert to 'property list'
format. The format is an ASCCI representation, but Whether or
not you think this is human readable depends on what kind of
human you are ;-)

Anyway, the commands should be part of your installation already.

Taco

Re: Going crazy with font conversion (macron)!

[Steffen Wolfrum]

Taco Hoekwater <taco@elvenkind.com> wrote:

>  Steffen Wolfrum wrote:
>  > BTW:
>  >
>  > Is there also a command to translate TFM (and VF) files to AFM or
>  > another human readable format and back again?
>
>  There exist the Knuthian programs tftopl (for tfm only) and
>  vftovp (for virtual fonts) that convert to 'property list'
>  format. The format is an ASCCI representation, but Whether or
>  not you think this is human readable depends on what kind of
>  human you are ;-)
>
>  Anyway, the commands should be part of your installation already.
>
>  Taco


The idea was to translate TFM (and VF?) in a readable format, and 
back again, in order to be able of making little kerning adjustments:
When  the font is already Tex-installed and in use, but finally there 
is one kerning pair that doesn't look good enough, I wanted to be 
able to make this particular adjustment in the kerning table without 
starting from AFM and going the whole conversion and installation way 
again.

Steffen

Re: Going crazy with font conversion (macron)!

[Adam Lindsay]

Steffen Wolfrum said this at Thu, 24 Mar 2005 15:16:22 +0100:

>Taco Hoekwater <taco@elvenkind.com> wrote:
>
>>  Steffen Wolfrum wrote:
>>  > BTW:
>>  >
>>  > Is there also a command to translate TFM (and VF) files to AFM or
>>  > another human readable format and back again?
>>
>>  There exist the Knuthian programs tftopl (for tfm only) and
>>  vftovp (for virtual fonts) that convert to 'property list'
>>  format. The format is an ASCCI representation, but Whether or
>>  not you think this is human readable depends on what kind of
>>  human you are ;-)
>>
>>  Anyway, the commands should be part of your installation already.
>>
>>  Taco
>
>
>The idea was to translate TFM (and VF?) in a readable format, and 
>back again, in order to be able of making little kerning adjustments:
>When  the font is already Tex-installed and in use, but finally there 
>is one kerning pair that doesn't look good enough, I wanted to be 
>able to make this particular adjustment in the kerning table without 
>starting from AFM and going the whole conversion and installation way 
>again.

That's the idea behind the Property List format. 
pltotf (and vptovf) will go in the other direction.
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Re: Going crazy with font conversion (macron)!

[Vit Zyka]

Adam Lindsay wrote:
> Steffen Wolfrum said this at Thu, 24 Mar 2005 15:16:22 +0100:
> 
>>Taco Hoekwater <taco@elvenkind.com> wrote:
>>
>>> Steffen Wolfrum wrote:
>>> > BTW:
>>> >
>>> > Is there also a command to translate TFM (and VF) files to AFM or
>>> > another human readable format and back again?
>>>
>>> There exist the Knuthian programs tftopl (for tfm only) and
>>> vftovp (for virtual fonts) that convert to 'property list'
>>> format. The format is an ASCCI representation, but Whether or
>>> not you think this is human readable depends on what kind of
>>> human you are ;-)
>>>
>>> Anyway, the commands should be part of your installation already.
>>>
>>> Taco
>>
>>The idea was to translate TFM (and VF?) in a readable format, and 
>>back again, in order to be able of making little kerning adjustments:
>>When  the font is already Tex-installed and in use, but finally there 
>>is one kerning pair that doesn't look good enough, I wanted to be 
>>able to make this particular adjustment in the kerning table without 
>>starting from AFM and going the whole conversion and installation way 
>>again.
> 
> That's the idea behind the Property List format. 
> pltotf (and vptovf) will go in the other direction.

??? I do not thing so.

Just like you want:
*.tfm --tftppl--> *.pl --editor--> *.pl --pltotf--> *.tfm

Kerning table *is* present in the Property list.

vit

Re: Going crazy with font conversion (macron)!

[Steffen Wolfrum]

Adam Lindsay <atl@comp.lancs.ac.uk> wrote:

>  It means that there's no \omacron in texnansi (or the other major
>  western encodings used for TeX fonts), and you're asking ConTeXt to
>  synthesise it from an 'o' and a 'textmacron'. It wouldn't surprise me
>  one bit to hear that the Mac handles combining accents differently from
>  TeX, and so the converted font's metrics is going to result in mistakes
>  in building text accents.
>
>  Interpretation: you're using artificial test cases to verify the font
>  installation. Stick to what you need and know, and you'll probably end
>  up with a character in the encoding.

No! I do need \omacron as I am typesetting the German translation of 
a Indian Yoga book ... with lots of Sanskrit (in latin alphabet plus 
all those diacritical accents)!


>  If you do need \omacron and the like, then you could hand-tune macros
>  that accommodate the specific font--see Idris's recent thread on
>  accents, or you could cook up an "expert" encoding (since MacOSX's
>  Helvetica does include that character) like Vit, and switch to that
>  encoding when you need the character, or you could even go with a big
>  unicode font install. I'll be documenting that process sometime.

That would be quite interesting.


(But for now I leave this workshop and use the HelveticaNeue to go on.)

Thank you,

Steffen

Re: Going crazy with font conversion (macron)!

[Steffen Wolfrum]

Adam Lindsay <atl@comp.lancs.ac.uk> wrote:

>  Hum. I haven't tried to replicate that here, but that looks like it
>  might be an encoding problem: ConTeXt doesn't know that you're using a
>  texnansi encoding, so it synthesises the characters using the
>  definitions in enco-def. Is the above file the only way you tested it?

No, also with other conversion and in other files it is the same.

>  Does this help?
>
>  \loadmapline[+Helvetica Helvetica " TeXnANSIEncoding ReEncodeFont "
>  <texnansi.enc <Helvetica.pfb]
>  \definefontsynonym[texnansi-Helvetica][Helvetica][encoding=texnansi]
>
>  \starttext
>  \definedfont[texnansi-Helvetica]
>  R\d{o} R{\=o} R\~o
>  \stoptext


Well, then the tilde moves in its right position.
But the macron stays left.

A font wizard knows what that means?!

Steffen

Re: Going crazy with font conversion (macron)!

[Adam Lindsay]

On 23 Mar 2005, at 11:54, Steffen Wolfrum wrote:

> Well, then the tilde moves in its right position.
> But the macron stays left.
>
> A font wizard knows what that means?!
>
It means that there's no \omacron in texnansi (or the other major 
western encodings used for TeX fonts), and you're asking ConTeXt to 
synthesise it from an 'o' and a 'textmacron'. It wouldn't surprise me 
one bit to hear that the Mac handles combining accents differently from 
TeX, and so the converted font's metrics is going to result in mistakes 
in building text accents.

Interpretation: you're using artificial test cases to verify the font 
installation. Stick to what you need and know, and you'll probably end 
up with a character in the encoding.

If you do need \omacron and the like, then you could hand-tune macros 
that accommodate the specific font--see Idris's recent thread on 
accents, or you could cook up an "expert" encoding (since MacOSX's 
Helvetica does include that character) like Vit, and switch to that 
encoding when you need the character, or you could even go with a big 
unicode font install. I'll be documenting that process sometime.

adam