jsMath

[victor60]

jsMath (hxxp:www.math.union.edu/~dpvc/jsMath/ [nonactive] jsMath) is an alternative way to render math and it is very different from png based approach (and IMHO superior). While the later was implemented for SMF with  mimetex extension (http://custom.simplemachines.org/mods/index.php?mod=1111) there is no jsMath plugin.

I found the way to modify Subs.php (hxxp:weyl.math.toronto.edu/Subs.php.txt [nonactive]) to use jsMath  (sure it requires jsMath installation) but I am neither mod developer nor have any intension to become one, so this snippet is for grabs

See in action (hxxp:weyl.math.toronto.edu/bulletinboard/index.php?topic=4.0 [nonactive]) (the second post)

Checked with SMF 2 RC2

[Arantor]

I'm curious. Surely you need another change to Subs.php to actually make it work? Or is it a change to the mod you've indicated?

[victor60]

I'm curious. Surely you need another change to Subs.php to actually make it work? Or is it a change to the mod you've indicated?

It is the only change I made in plain vanilla SMF 2 RC2 to hookup javascript jsMath/easy/load.js which loads the whole jsMath machinery to render math formulae like $$\int xdx $$ (display math) or $x^2$ (inline math). But mimetex plugin also is not a standalone as it uses mimetex.cgi or newer mathtex.cgi which in turn loads latex and dvipng execs to produce png images instead of math formulae

Victor

[Arantor]

That's the bit I don't get. Reading the docs of jsMath seems to indicate it needed to be attached to a span or div of class math, which AFAIK isn't in SMF by default.

[victor60]

seems to indicate it needed to be attached to a span or div of class math

Actually not. There are plenty ways to load jsMath, the easiest is through load.js

weyl.math.toronto.edu/bulletinboard/jsMath/easy/load.js

is what I use (it is highly configurable). So if you get any html page, include script loading then you are done:

as jsMath.js (the main workhorse) sees $$.... $$ or $...$ it renders inside

F.e. for wordpress there is no jsMath plugin but there is general use wp-hook plugin which can load any script - in particular this one.

For mediawiki there is JsMath plugin which does the same

I managed to insert it in CMS SilversStripe CMS - the same way (for special kind of pages only)

hxxp:weyl.math.toronto.edu/wordpress/?p=293 [nonactive] just some links

Victor

[Arantor]

Ah, my bad, I missed that. I think I'd have it set up to explicitly use a tag construction were I to make a mod of this, and have a button on the editor, for [math]. Just I can see plenty of instances where $ and $$ might be used otherwise.

[victor60]

Ah, my bad, I missed that. I think I'd have it set up to explicitly use a tag construction were I to make a mod of this, and have a button on the editor, for [math]. Just I can see plenty of instances where $ and $$ might be used otherwise.

Yes, if you are talking about general use forum. Then we edit load.js

Code Select Expand


processSlashParens: 1,       // process \(...\) in text?
  processSlashBrackets: 1,     // process \[...\] in text?
  processDoubleDollars: 1,     // process $$...$$ in text?
  processSingleDollars: 1,     // process $...$ in text?
  processLaTeXenvironments: 0, // process \begin{xxx}...\end{xxx} outside math mode?
  fixEscapedDollars: 0,        // convert \$ to $ outside of math mode?
  doubleDollarsAreInLine: 0,   // make $$...$$ be in-line math?
  allowDisableTag: 1,          // allow ID="tex2math_off" to disable tex2math?
  //
  //  If you want to use your own custom delimiters for math instead
  //  of the usual ones, then uncomment the following four lines and
  //  insert your own delimiters within the quotes.  You may want to
  //  turn off processing of the dollars and other delimiters above
  //  as well, though you can use them in combination with the
  //  custom delimiters if you wish.  See the tex2math documentation
  //  for more details.
  // 
  //customDelimiters: [
  //  '[math]','[/math]',        // to begin and end in-line math
  //  '[display]','[/display]'   // to begin and end display math



and disable $ and $$ as delimiters (just replace 1 by 0) and allow \( \) \[ \] instead or uncomment

Code Select Expand


'[math]','[/math]',        // to begin and end in-line math
'[display]','[/display]'   // to begin and end display math


If we want to be able to use $ as Dollar but allow $ as a math delimiter we enable EscapedDollar, so \$ will be a dollarsign (displayed as $) not math delimiter while $ will be a math delimiter (this is a standard way of TeX)

Victor