hz and protrusion

hz and protrusion

[Hans Hagen]

Hi,

The latest luatex beta + mkiv support hz and protruding. The user 
interface will be extended a bit, but for the moment it goes as follows:

% engine=luatex

% \setupfontexpansion [quality][stretch=2.5,shrink=2.5,step=.5,factor=1]

\setupfontexpansion[oeps][a=1,b=2]

\setuptolerance[verytolerant,stretch] \showframe

\starttext

\definefontfeature[demo][default][mode=node,expansion=quality,protrusion=pure]

\start
     \definedfont[Serif*demo at 12pt]           \enableadjusting 
\enableprotruding \input tufte \par
    %\definedfont[name:optimanova*demo at 12pt] \enableadjusting 
\enableprotruding \input tufte \par
\stop

\stoptext

(or the usual \setupalign options)

As you may deduce from this example, handling is gone in mkiv. This not 
only safes some 40K format file, but the new mechanism also runs faster 
(some 10% overhead on 300 pages of pure text, which is rare).

At some point we need to extend the hz/protruding vectors in mkiv to 
cover non latin scripts as well (currently they default to factors of 
1). As with mkiv, latin glyphs fall back to their shape parent.

Under some circumstances hz may not work as expected. Fixing this is on 
the agenda for the next luatex beta release.

Hans

-----------------------------------------------------------------
                                           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
-----------------------------------------------------------------
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___________________________________________________________________________________

Re: hz and protrusion

[David Wooten]

Hans,

This is great news, thanks a million.

Where should I keep an eye out for the interface extensions?

Dave

On Feb 15, 2008, at 10:08 AM, Hans Hagen wrote:

> Hi,
>
> The latest luatex beta + mkiv support hz and protruding. The user
> interface will be extended a bit, but for the moment it goes as  
> follows:
>
> % engine=luatex
>
> % \setupfontexpansion [quality][stretch=2.5,shrink=2.5,step=. 
> 5,factor=1]
>
> \setupfontexpansion[oeps][a=1,b=2]
>
> \setuptolerance[verytolerant,stretch] \showframe
>
> \starttext
>
> \definefontfeature[demo][default] 
> [mode=node,expansion=quality,protrusion=pure]
>
> \start
>     \definedfont[Serif*demo at 12pt]           \enableadjusting
> \enableprotruding \input tufte \par
>    %\definedfont[name:optimanova*demo at 12pt] \enableadjusting
> \enableprotruding \input tufte \par
> \stop
>
> \stoptext
>
> (or the usual \setupalign options)
>
> As you may deduce from this example, handling is gone in mkiv. This  
> not
> only safes some 40K format file, but the new mechanism also runs  
> faster
> (some 10% overhead on 300 pages of pure text, which is rare).
>
> At some point we need to extend the hz/protruding vectors in mkiv to
> cover non latin scripts as well (currently they default to factors of
> 1). As with mkiv, latin glyphs fall back to their shape parent.
>
> Under some circumstances hz may not work as expected. Fixing this is  
> on
> the agenda for the next luatex beta release.
>
> Hans
>
> -----------------------------------------------------------------
>                                           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
> ___________________________________________________________________________________

___________________________________________________________________________________
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
___________________________________________________________________________________

Re: hz and protrusion

[Hans Hagen]

David Wooten wrote:
> Hans,
> 
> This is great news, thanks a million.
> 
> Where should I keep an eye out for the interface extensions?
on this list

-----------------------------------------------------------------
                                           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
___________________________________________________________________________________