Difference between revisions of "Scaling Rotating Mirroring Clipping"
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− | + | You can use the commands for text, but also for graphics or other “building blocks”. | |
− | = | + | =Scaling= |
− | + | The {{cmd|scale}} command is all-purpose, you can scale by factors or to a defined size. | |
− | + | As a special case, you can insert symbols at a reduced size in the text flow using {{cmd|getscaledglyph}}. | |
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− | + | <context source=yes> | |
− | + | \getscaledglyph{.5}{Serif}{a} a \getscaledglyph{2}{Serif}{a} | |
− | + | </context> | |
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− | + | = Mirroring = | |
− | + | <context source=yes> | |
− | + | There is a \mirror{\sl mirorred} {\sl word} in this sentence. | |
− | |||
− | < | ||
− | There is a \mirror{\sl mirorred} | ||
− | |||
− | |||
− | |||
− | |||
</context> | </context> | ||
− | + | {{cmd|mirror}} 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: | \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, | + | once or twice she had peeped into the book her sister was reading, but it had no pictures or conversations in it, \quote{and |
− | what is the use of a book, | + | what is the use of a book,} thought Alice \quote{without pictures or conversation?}}} |
− | </ | + | </context> |
+ | = Rotating = | ||
− | + | You can {{cmd|rotate}} something by an arbitrary angle like | |
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<context source=yes> | <context source=yes> | ||
\rotate[rotation=42]{the ultimate answer} | \rotate[rotation=42]{the ultimate answer} | ||
Line 64: | Line 40: | ||
</context> | </context> | ||
− | + | <context source=yes> | |
+ | \ss Next generation L\rotate{m}\rotate{m}TSP\mirror{3}Al\rotate[rotation=270,location=high]{v}? | ||
+ | </context> | ||
+ | |||
+ | You can rotate a long paragraph as well. | ||
+ | |||
+ | ==Location parameter== | ||
+ | |||
+ | The influence of <code>location=</code> at different angles: | ||
<context source=yes> | <context source=yes> | ||
Line 80: | Line 64: | ||
</context> | </context> | ||
+ | === Rotating Figures === | ||
+ | |||
+ | The following code shows how the location parameter influences rotation with a frame: | ||
+ | |||
+ | <texcode> | ||
+ | \setupbodyfont[sans, 30pt] | ||
+ | \setuppagenumbering[location=,] | ||
+ | \showframe | ||
+ | |||
+ | \starttext | ||
+ | \topskip4cm | ||
+ | \dostepwiserecurse{0}{360}{10}{ | ||
+ | \doloopoverlist{normal,default,depth,fit,broad,high,middle}{ | ||
+ | \ruledhbox{\rotate[rotation=\recurselevel, location=\recursestring]{% | ||
+ | \framed | ||
+ | [width=\textheight, height=\textwidth, rulethickness=5pt, | ||
+ | depth=0cm, foregroundstyle=\bfd] | ||
+ | {\recursestring, \recurselevel°} | ||
+ | } | ||
+ | } | ||
+ | } | ||
+ | } | ||
+ | \stoptext | ||
+ | </texcode> | ||
+ | |||
+ | or, even nicer: | ||
− | + | <context source="yes"> | |
+ | \useMPlibrary[dum] | ||
+ | \setupexternalfigures[width=4em,height=3em,frame=on,] | ||
+ | \dostepwiserecurse{0}{359}{45}{{\bf\recurselevel˚}\quad | ||
+ | \doloopoverlist{normal,depth,fit,broad,high,middle}{ | ||
+ | \dontleavehmode\ruledhbox{% | ||
+ | \rotate[rotation=\recurselevel, location=\recursestring]{% | ||
+ | \externalfigure[\recursestring] | ||
+ | }% | ||
+ | }% | ||
+ | }\par | ||
+ | } | ||
+ | </context> | ||
− | + | ==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: | 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] | \setuplayout[width=3cm] | ||
\setuprotate[rotation=180,location=broad] | \setuprotate[rotation=180,location=broad] | ||
Line 93: | Line 115: | ||
a\rotate{e}i\par | a\rotate{e}i\par | ||
a\rotate{\hbox{e}}i | 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]} | ||
</texcode> | </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"> | <context source="yes"> | ||
\clip[nx=3,ny=3,x=1,y=1]{\externalfigure[cow]} | \clip[nx=3,ny=3,x=1,y=1]{\externalfigure[cow]} | ||
</context> | </context> | ||
− | |||
<context source="yes"> | <context source="yes"> | ||
− | |||
\definedfont[SansBold at 20mm] | \definedfont[SansBold at 20mm] | ||
\baselineskip 0pt % switch off the space between the stripes | \baselineskip 0pt % switch off the space between the stripes | ||
\lineskip 0pt | \lineskip 0pt | ||
\def\MyLogo{\vbox{\hbox{\CONTEXT}\null}} % null is necessary for the whole bounding box | \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=1]{\color[yellow]{\MyLogo}} |
− | \clip[ny=3,y=2]{\color[orange]\MyLogo} | + | \clip[ny=3,y=2]{\color[orange]{\MyLogo}} |
− | \clip[ny=3,y=3]{\color[red]\MyLogo} | + | \clip[ny=3,y=3]{\color[red]{\MyLogo}} |
</context> | </context> | ||
− | see also | + | And here’s how to cut out a piece by measures (see also {{cmd|setupclipping}} and {{cmd|clip}}): |
+ | |||
+ | <context source="yes"> | ||
+ | \clip[width=3cm, height=1cm, hoffset=1cm, voffset=5mm]{\externalfigure[cow][width=5cm]} | ||
+ | </context> | ||
+ | |||
+ | |||
+ | =Further reading= | ||
+ | |||
+ | Graphic transformations are implemented in [https://source.contextgarden.net/tex/context/base/mkiv/grph-trf.mkiv grph-trf.mkiv] and [https://source.contextgarden.net/tex/context/base/mkiv/grph-trf.lua grph-trf.lua]. | ||
+ | |||
+ | [[Category:Basics]] | ||
+ | [[Category:Graphics]] |
Revision as of 19:35, 1 May 2022
You can use the commands for text, but also for graphics or other “building blocks”.
Contents
Scaling
The \scale command is all-purpose, you can scale by factors or to a defined size.
As a special case, you can insert symbols at a reduced size in the text flow using \getscaledglyph.
\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, \quote{and what is the use of a book,} thought Alice \quote{without pictures or conversation?}}}
Rotating
You can \rotate something by an arbitrary angle 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}
\ss Next generation L\rotate{m}\rotate{m}TSP\mirror{3}Al\rotate[rotation=270,location=high]{v}?
You can rotate a long paragraph as well.
Location parameter
The influence of location=
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}
Rotating Figures
The following code shows how the location parameter influences rotation with a frame:
\setupbodyfont[sans, 30pt] \setuppagenumbering[location=,] \showframe \starttext \topskip4cm \dostepwiserecurse{0}{360}{10}{ \doloopoverlist{normal,default,depth,fit,broad,high,middle}{ \ruledhbox{\rotate[rotation=\recurselevel, location=\recursestring]{% \framed [width=\textheight, height=\textwidth, rulethickness=5pt, depth=0cm, foregroundstyle=\bfd] {\recursestring, \recurselevel°} } } } } \stoptext
or, even nicer:
\useMPlibrary[dum] \setupexternalfigures[width=4em,height=3em,frame=on,] \dostepwiserecurse{0}{359}{45}{{\bf\recurselevel˚}\quad \doloopoverlist{normal,depth,fit,broad,high,middle}{ \dontleavehmode\ruledhbox{% \rotate[rotation=\recurselevel, location=\recursestring]{% \externalfigure[\recursestring] }% }% }\par }
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]}
\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}}
And here’s how to cut out a piece by measures (see also \setupclipping and \clip):
\clip[width=3cm, height=1cm, hoffset=1cm, voffset=5mm]{\externalfigure[cow][width=5cm]}
Further reading
Graphic transformations are implemented in grph-trf.mkiv and grph-trf.lua.