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More in depth LaTeX fragment render benchmarking

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tecosaur 2020-02-17 10:26:51 +08:00
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@ -564,12 +564,15 @@ We also like ~org-fragtog~, and that wants a hook.
#+END_SRC
***** LaTeX Fragments
It's nice to customise the look of LaTeX fragments so they fit better in the
text. Let's start by adding a sans font. \(\sqrt{\beta^2+3}-\sum_{\phi=1}^\infty \frac{x^\phi-1}{\Gamma(a)}\)
text --- like this \(\sqrt{\beta^2+3}-\sum_{\phi=1}^\infty \frac{x^\phi-1}{\Gamma(a)}\). Let's start by adding a sans font.
#+BEGIN_SRC emacs-lisp
(setq org-format-latex-header "\\documentclass{article}
\\usepackage[usenames]{color}
[PACKAGES]
[DEFAULT-PACKAGES]
\\usepackage[T1]{fontenc}
\\usepackage{mathtools}
\\usepackage{textcomp,amssymb}
\\pagestyle{empty} % do not remove
% The settings below are copied from fullpage.sty
\\setlength{\\textwidth}{\\paperwidth}
@ -589,19 +592,35 @@ text. Let's start by adding a sans font. \(\sqrt{\beta^2+3}-\sum_{\phi=1}^\infty
\\usepackage{arevmath}")
#+END_SRC
We can either render from a ~dvi~ or ~pdf~ file, so let's benchmark ~latex~ and
~pdflatex~.
| ~latex~ time | ~pdflatex~ time |
|------------+---------------|
| 135±2 ms | 215±3 ms |
On the rendering side, there are two ~.dvi~-to-image convertors which I am
interested in. ~dvipng~ and ~dvisvgm~. For inline preview we care about speed. Using
the above latex expression and benchmarking lead to the following results:
| ~dvipng~ time | ~dvisvgm~ time |
|-------------+--------------|
| 0.09±0.002s | 0.18±0.004s |
interested in: ~dvipng~ and ~dvisvgm~. Then with the a ~.pdf~ we have ~pdf2svg~.
For inline preview we care about speed, while for exporting we care about file
size and preffer a vector graphic.
Using the above latex expression and benchmarking lead to the following results:
| ~dvipng~ time | ~dvisvgm~ time | ~pdf2svg~ time |
|-------------+--------------+--------------|
| 89±2 ms | 178±2 ms | 12±2 ms |
Now let's combine this to see what's best
| Tool chain | Total time | Resultant file size |
|--------------------+------------+---------------------|
| ~latex~ + ~dvipng~ | 226±2 ms | 7 KiB |
| ~latex~ + ~dvisvgm~ | 392±4 ms | 8 KiB |
| ~pdflatex~ + ~pdf2svg~ | 230±2 ms | 16 KiB |
So, let's use ~dvipng~ for previewing LaTeX fragments in-emacs, but ~dvisvgm~ for [[
Exporting to HTML][LaTeX Rendering]].
/Unfortunately: it seems that svg sizing is annoying ATM, so let's not do this right now./
/Unfortunately: it seems that svg sizing is annoying ATM, so let's actually not do this right now./
As well as having a sans font, there are a few other tweaks which can make them
look better. Namely making the background transparent, and increasing the
resolution.
look better. Namely making sure that the colours switch when the theme does.
#+BEGIN_SRC emacs-lisp
(after! org
;; make background of fragments transparent