[XeTeX] Cutting a character

[Mehdi Omidali]

Thank you Ross and others.
In fact, \kok is what I need. I need it to implement the Kashida option 
in xepersian that I will post my implementation this week in a separate 
email.
Mehdi
On 4/11/2010 2:23 AM, Ross Moore wrote:
>
> On 11/04/2010, at 3:56 AM, Mehdi Omidali wrote:
>
>> Hi all,
>> Is it possible to construct a box that contains a fraction (say half) 
>> of a character (horizontal half) of a font.
>
>
> It isn't clear whether you want the width of the box
> to be the original character width, or only the width
> of what remains visible after knocking-out half of it.
>
> Here are commands which implement both viewpoints,
> with an optional parameter to adjust how much to
> "knock out" (i.e., overprint with a white rule).
> The examples test various amounts.
>
> \usepackage{color}
>
> \newcommand{\ko}[2][.25]{{#2%
>  \setbox0=\hbox{#2}\dimen0=#1\wd0
>  \dimen2=\ifdim \dp0=0pt .1ex\else 1.1\dp0\fi
>  \kern-\dimen0
>    {\color{white}\vrule height 1.1\ht0 depth\dimen2 width\dimen0}%
> % \kern-\dimen0
>  }}
>
> \newcommand{\kok}[2][.25]{{#2%
>  \setbox0=\hbox{#2}\dimen0=#1\wd0
>  \dimen2=\ifdim \dp0=0pt .1ex\else 1.1\dp0\fi
>  \kern-\dimen0
>    {\color{white}\vrule height 1.1\ht0 depth\dimen2 width\dimen0}%
>  \kern-\dimen0
>  }}
>
> \begin{document}
> \noindent Retain full character widths:\par
> \medskip
> {\LARGE\noindent
> \ko{H}\ko{E}\ko{L}\ko{L}\ko{O} \ko{W}\ko{o}\ko{r}\ko{l}\ko{d}.\par}
> {\LARGE\noindent
> \ko[.5]{H}\ko[.5]{E}\ko[.5]{L}\ko[.5]{L}\ko[.5]{O} 
> \ko[.3]{W}\ko[.3]{o}\ko[.3]{r}\ko[.3]{l}\ko[.3]{d}.\par}
>
> \bigskip
> \noindent Use only the width remaining after knock-out:\par
> \medskip
> {\LARGE\noindent
> \kok{H}\kok{E}\kok{L}\kok{L}\kok{O} 
> \kok{W}\kok{o}\kok{r}\kok{l}\kok{d}.\par}
> {\LARGE\noindent
> \kok[.5]{H}\kok[.5]{E}\kok[.5]{L}\kok[.5]{L}\kok[.5]{O} 
> \kok[.3]{W}\kok[.3]{o}\kok[.3]{r}\kok[.3]{l}\kok[.3]{d}.\par}
>
>
>
>
>> Mehdi
>>
>>
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>
> ------------------------------------------------------------------------
> Ross Moore                                       ross at maths.mq.edu.au
> Mathematics Department                           office: E7A-419
> Macquarie University                             tel: +61 (0)2 9850 8955
> Sydney, Australia  2109                          fax: +61 (0)2 9850 8114
> ------------------------------------------------------------------------
>
>
>
>
>
>
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