Difference between revisions of "Scaling Rotating Mirroring Clipping"

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7ZMb3j  <a href="http://gmipfkeiexfa.com/">gmipfkeiexfa</a>, [url=http://lfjthrodjmkl.com/]lfjthrodjmkl[/url], [link=http://stzyvhpmzaea.com/]stzyvhpmzaea[/link], http://wekypunzqwzk.com/
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You can use the commands for text, but also for graphics or other “building blocks”.
 +
 
 +
=Scaling=
 +
 
 +
You can insert symbols at a reduced size in the text flow.
 +
 
 +
<context source=yes>
 +
\getscaledglyph{.5}{Serif}{a} a \getscaledglyph{2}{Serif}{a}
 +
</context>
 +
 
 +
= Mirroring =
 +
<context source=yes>
 +
There is a \mirror{\sl mirorred} {\sl word} in this sentence.
 +
</context>
 +
 
 +
<code>\mirror</code> makes a <code>\hbox</code> and mirrors the contents. If you want to have a longer paragraph mirrored, you have to make a <code>\vbox</code> manually.
 +
 
 +
<context source=yes>
 +
\mirror{\vbox{Alice was beginning to get very tired of sitting by her sister on the bank, and of having nothing to do:
 +
once or twice she had peeped into the book her sister was reading, but it had no pictures or conversations in it, `and
 +
what is the use of a book,' thought Alice `without pictures or conversation?'}}
 +
</context>
 +
 
 +
= Rotating =
 +
 
 +
You can rotate something by an arbitrary angle by saying something like
 +
<context source=yes>
 +
\rotate[rotation=42]{the ultimate answer}
 +
</context>
 +
 
 +
The rotation angle and the location (which determines around which point the content is rotated) are optional and can also be set by
 +
 
 +
<context source=yes>
 +
\setuprotate[rotation=42,location=normal] % normal is the default
 +
\rotate{the ultimate answer}
 +
</context>
 +
 
 +
==Location parameter==
 +
 
 +
An example by Hans Hagen showing the influence of <code>location=</code> argument at different angles:
 +
 
 +
<context source=yes>
 +
\dostepwiserecurse{0}{359}{45}
 +
  {\startlinecorrection[blank]
 +
    \hbox
 +
      {\expanded{\setuprotate[rotation=\recurselevel]}%
 +
      \traceboxplacementtrue
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      \hbox to .2\hsize{\hss\ruledhbox{\rotate[location=depth] {\ruledhbox{\bfb  (depth)}}}}%
 +
      \hbox to .2\hsize{\hss\ruledhbox{\rotate[location=fit]  {\ruledhbox{\bfb    (fit)}}}}%
 +
      \hbox to .2\hsize{\hss\ruledhbox{\rotate[location=broad] {\ruledhbox{\bfb  (broad)}}}}%
 +
      \hbox to .2\hsize{\hss\ruledhbox{\rotate[location=normal]{\ruledhbox{\bfb (normal)}}}}%
 +
      \hbox to .2\hsize{\hss\ruledhbox{\rotate[location=high]  {\ruledhbox{\bfb  (high)}}}}}
 +
    \stoplinecorrection}
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</context>
 +
 
 +
 
 +
You can rotate a long paragraph as well.
 +
 
 +
==In a box==
 +
 
 +
Depending on the usage you will sometimes probably want to include the content of what you wish to rotate into a box. Compare the following two examples:
 +
 
 +
<context source=yes>
 +
\setuplayout[width=3cm]
 +
\setuprotate[rotation=180,location=broad]
 +
 
 +
a\rotate{e}i\par
 +
a\rotate{\hbox{e}}i
 +
</context>
 +
 
 +
==Page dependent landscape figures==
 +
 
 +
Sometimes, in a double-sided portrait document, you may wish to rotate a landscape figure so that the top is towards the spine of the book – no matter whether it's on an odd or even page. In this case the {{cmd|doifoddpageelse}} command can help:
 +
 
 +
<texcode>
 +
\rotate[rotation=\doifoddpageelse{90}{270}]{\externalfigure[cow]}
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</texcode>
 +
 
 +
This example is by Wolfgang, from [http://www.ntg.nl/pipermail/ntg-context/2011/059834.html the thread starting here]. The thread contains other solutions to the problem.
 +
 
 +
=Clipping=
 +
 
 +
You can adjust the size of an element by cropping/clipping its borders:
 +
 
 +
<context source="yes">
 +
\clip[nx=3,ny=3,x=1,y=1]{\externalfigure[cow]}
 +
</context>
 +
 
 +
<context source="yes">
 +
\setupcolors[state=start]
 +
\definedfont[SansBold at 20mm]
 +
\baselineskip 0pt % switch off the space between the stripes
 +
\lineskip 0pt
 +
\def\MyLogo{\vbox{\hbox{\CONTEXT}\null}} % null is necessary for the whole bounding box
 +
\clip[ny=3,y=1]{\color[yellow]\MyLogo}
 +
\clip[ny=3,y=2]{\color[orange]\MyLogo}
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\clip[ny=3,y=3]{\color[red]\MyLogo}
 +
</context>
 +
 
 +
see also {{cmd|setupclipping}} and {{cmd|clip}}
 +
 
 +
=Further reading=
 +
 
 +
In [https://source.contextgarden.net/tex/context/base/mkii/core-mis.mkii core-mis.mkii] (for MkII), there are some handy commands for graphical text manipulation defined.
 +
{{todo|What is the equivalent for mkiv ?}}
 +
 
 +
[[Category:Basics]]
 +
[[Category:Graphics]]

Revision as of 13:23, 9 August 2020

You can use the commands for text, but also for graphics or other “building blocks”.

Scaling

You can insert symbols at a reduced size in the text flow. 

\getscaledglyph{.5}{Serif}{a} a \getscaledglyph{2}{Serif}{a}

Mirroring

There is a \mirror{\sl mirorred} {\sl word} in this sentence.

\mirror makes a \hbox and mirrors the contents. If you want to have a longer paragraph mirrored, you have to make a \vbox manually. 

\mirror{\vbox{Alice was beginning to get very tired of sitting by her sister on the bank, and of having nothing to do: 
once or twice she had peeped into the book her sister was reading, but it had no pictures or conversations in it, `and 
what is the use of a book,' thought Alice `without pictures or conversation?'}}

Rotating

You can rotate something by an arbitrary angle by saying something like 

\rotate[rotation=42]{the ultimate answer}

The rotation angle and the location (which determines around which point the content is rotated) are optional and can also be set by 

\setuprotate[rotation=42,location=normal] % normal is the default
\rotate{the ultimate answer}

Location parameter

An example by Hans Hagen showing the influence of location= argument at different angles: 

\dostepwiserecurse{0}{359}{45}
   {\startlinecorrection[blank]
    \hbox
      {\expanded{\setuprotate[rotation=\recurselevel]}%
       \traceboxplacementtrue
       \hbox to .2\hsize{\hss\ruledhbox{\rotate[location=depth] {\ruledhbox{\bfb  (depth)}}}}%
       \hbox to .2\hsize{\hss\ruledhbox{\rotate[location=fit]   {\ruledhbox{\bfb    (fit)}}}}%
       \hbox to .2\hsize{\hss\ruledhbox{\rotate[location=broad] {\ruledhbox{\bfb  (broad)}}}}%
       \hbox to .2\hsize{\hss\ruledhbox{\rotate[location=normal]{\ruledhbox{\bfb (normal)}}}}%
       \hbox to .2\hsize{\hss\ruledhbox{\rotate[location=high]  {\ruledhbox{\bfb   (high)}}}}}
    \stoplinecorrection}


You can rotate a long paragraph as well.

In a box

Depending on the usage you will sometimes probably want to include the content of what you wish to rotate into a box. Compare the following two examples: 

\setuplayout[width=3cm]
\setuprotate[rotation=180,location=broad]

a\rotate{e}i\par
a\rotate{\hbox{e}}i

Page dependent landscape figures

Sometimes, in a double-sided portrait document, you may wish to rotate a landscape figure so that the top is towards the spine of the book – no matter whether it's on an odd or even page. In this case the \doifoddpageelse command can help: 

\rotate[rotation=\doifoddpageelse{90}{270}]{\externalfigure[cow]}

This example is by Wolfgang, from the thread starting here. The thread contains other solutions to the problem.

Clipping

You can adjust the size of an element by cropping/clipping its borders: 

\clip[nx=3,ny=3,x=1,y=1]{\externalfigure[cow]}


\setupcolors[state=start]
\definedfont[SansBold at 20mm]
\baselineskip 0pt % switch off the space between the stripes
\lineskip 0pt
\def\MyLogo{\vbox{\hbox{\CONTEXT}\null}} % null is necessary for the whole bounding box
\clip[ny=3,y=1]{\color[yellow]\MyLogo}
\clip[ny=3,y=2]{\color[orange]\MyLogo}
\clip[ny=3,y=3]{\color[red]\MyLogo}

see also \setupclipping and \clip

Further reading

In core-mis.mkii (for MkII), there are some handy commands for graphical text manipulation defined.


TODO: What is the equivalent for mkiv ? (See: To-Do List)
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