Partially Rendering Latex

[AnZhg]

For now, I believe anytime latex property of MTUIMathLabel is set, the whole latex string would be parsed and rendered again. I hope it would check if latex is appended and only render necessary parts instead of whole latex string. Or add a new method (-[MTUIMathLabel appendLatex:(NSString *)latexPart]), which only re-renders necessary parts instead of start over. This can reduce rendering time if I'm appending a small part of latex to a very long latex string. And thus drop power consumption.

Suggested label: improvements

[kostub]

How much performance improvement do you expect here? I wrote an editor which uses the MTUIMathLabel and anytime the user updates the math, the latex string is reprased and rendered again. I have not noticed any performance issues even on old phones (iPhone 4).

[AnZhg]

I open this issue because there is a possibility a user would render a latex string like "1+2+...+1000", and the user really inputs every term instead of using a summation. Also the expression terms could be random like "1.298+319.2+4019.9+...+1239174" (just an example), which cannot use a summation.

After this, he/she wants to append +1001 to it. There is penalty to render the whole string again, if the length of string is really huge.

I think MiKTeX is doing partial rendering. I used it to write my thesis.