nml/docs/external/latex.nml
2024-08-14 15:27:34 +02:00

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@import ../template.nml
%<make_doc({"External Tools"}, "LaTeX", "LaTeX")>%
@LaTeX = $|[kind=inline, caption=LaTeX]\LaTeX|$
#+LAYOUT_BEGIN Centered
*Bring some %LaTeX% unto your document!*
#+LAYOUT_END
# Requirements
In order to use LaTeX processing, you need to have a %LaTeX% distribution installed. We recommend the [TeX Live](https://en.wikipedia.org/wiki/TeX_Live) distribution.
You'll also need to install the [latex2svg](https://github.com/ef3d0c3e/nml/blob/master/third/latex2svg) python script provided with NML. You'll have to follow the installation instructions from the [original latex2svg repository](https://github.com/Moonbase59/latex2svg). If you don't want to add the script to your `\$PATH`, you can set the executable path in the §{tex_env}[caption=LaTeX environment].
# Inline Math
You can add inline math by enclosing %LaTeX% between two ``$``:
* ``$\lim_{n \to \infty} \Big(1 + \frac{1}{n}\Big)^n = e$`` → $\lim_{n \to \infty} \Big(1 + \frac{1}{n}\Big)^n = e$
* ``$\pi = \sqrt{\sum_{n=1}^\infty \frac{1}{n^2}}$`` → $\pi = \sqrt{\sum_{n=1}^\infty \frac{1}{n^2}}$
You can make the %LaTeX% non inline by specifying `kind=block` in it's property: ``$[kind=block] 1+1=2$`` → $[kind=block] 1+1=2$
*(notice how it's not inside a paragraph)*
# Non Math LaTeX
You can write %LaTeX% outside of %LaTeX%'s math environment, by enclosing your code between ``$|...|$``:
``LaTeX,
$|\begin{tikzpicture}
\begin{axis}
\addplot3[patch,patch refines=3,
shader=faceted interp,
patch type=biquadratic]
table[z expr=x^2-y^2]
{
x y
-2 -2
2 -2
2 2
-2 2
0 -2
2 0
0 2
-2 0
0 0
};
\end{axis}
\end{tikzpicture}|$
``
Gives the following:
#+LAYOUT_BEGIN Centered
$|\begin{tikzpicture}
\begin{axis}
\addplot3[patch,patch refines=3,
shader=faceted interp,
patch type=biquadratic]
table[z expr=x^2-y^2]
{
x y
-2 -2
2 -2
2 2
-2 2
0 -2
2 0
0 2
-2 0
0 0
};
\end{axis}
\end{tikzpicture}|$
#+LAYOUT_END
#{tex_env} LaTeX environment
You can define multiple %LaTeX% environment, the default being `main`
* ``@tex.env.fontsize`` The fontsize (in pt) specified to `latex2svg` (default: `12`).
* ``@tex.env.preamble`` The preamble prepended to every %LaTeX% code.
* ``@tex.env.block_prepend`` Text to prepend to every non math %LaTeX% code.
* ``@tex.env.exec`` The `latex2svg` executable path, defaults to `latex2svg` (need to be in your `\$PATH`)
Replace ``env`` with the name of the custom environment you wish to define.
Here's a preamble to render %LaTeX% gray:
``
@tex.main.fontsize = 9
@tex.main.preamble = \usepackage{xcolor} \\
\usepgfplotslibrary{patchplots} \\
\definecolor{__color1}{HTML}{d5d5d5} \\
\everymath{\color{__color1}}
@tex.main.block_prepend = \color{__color1}
``
To set the environment you wish to use for a particular %LaTeX% element, set the `env` property:
* ``$[env=main] 1+1 = 2$`` → $[env=main] 1+1 = 2$
* ``$[env=other] 1+1 = 2$`` → $[env=other] 1+1 = 2$
# Properties
* ``env`` The %LaTeX% environment to use, defaults to `main`.
* ``kind`` The display kind of the rendered element:
*- `inline` (default for math mode) displays %LaTeX% as part of the current paragraph.
*- `block` (default for non math mode) display %LaTeX% on it's own line.
* ``caption`` Caption for accessibility, defaults to `none`.
# LaTeX cache
%LaTeX% elements that have been successfully rendered to **svg** are stored in the cache database, to avoid processing them a second time.
Note that this cache is shared between documents, so you don't need to reprocess them if they share the same environment.
They are stored under the table named ``Plain Text,cached_tex``, if you modify the `env` all elements will be reprocessed which may take a while...
# Bindings
* ``Lua, nml.tex.push_math(kind, tex [, env [, caption]])``
inserts a math mode %LaTeX% element.
** ``kind`` *(string)* the element kind (inline or block)
** ``tex`` *(string)* the %LaTeX% code
** ``env`` *(string)* the %LaTeX% environment (defaults to `main`)
** ``caption`` *(string)* the accessibility caption
* ``Lua, nml.tex.push(kind, tex [, env [, caption]])``
inserts a non-math %LaTeX% element.
** ``kind`` *(string)* the element kind (inline or block)
** ``tex`` *(string)* the %LaTeX% code
** ``env`` *(string)* the %LaTeX% environment (defaults to `main`)
** ``caption`` *(string)* the accessibility caption