# [OS X TeX] Math font wierdness

Jean-Claude DE SOZA jeanclaudedesoza at free.fr
Mon Oct 14 00:22:27 EDT 2002


It's true that the bottom of some symbols appears to be truncated in
the previewer and if you try to print the pdf file in TeXShop you'll
see the same truncated symbols but if you do it in Acrobat Reader, all
is fine.
So it is not a driver problem but an Apple problem.
Two weeks ago, I submitted the problem to my brother who transmitted it
to Apple and here is the answer :

> Thanks for the PDF file.  It turns out this is a known issue, it has to
> do with certain fonts that have incorrect bounding boxes for some
> chars.  The fix lies in clipping to the computed glyph size instead of
> relying on the bounding box numbers.  I've cc'd myself to the Radar bug
> and I'd be happy to let you know when the fix gets released.

Jean-Claude DE SOZA

Le dimanche, 13 oct 2002, à 22:58 Europe/Paris, Andrew Farmer a écrit :

> At 13 October, 2002 Themis Matsoukas wrote:
>> This is a problem with the previewer, not with the pdf file. The
>> bottom of some symbols (integrals, large parentheses) appears
>> truncated
>> in the TeXShop previewer, if these symbols extend beyond the visible
>> part of the page (a problem at high magnifications). If you scroll to
>> bring the full equation in view, the previewer does not fully refresh
>> the page and these symbols look like they are missing their bottom. To
>> force the previewer to refresh, scroll to the position you want, go
>> one
>> page back (or forward), then return to the page you want. The symbols
>> should look fine. Or, decrease the magnification so that you see the
>> full page. This solution works in OS X 10.1.5. Still, the file prints
>> correctly regardless of how it looks on the screen.
>
> Not true. The printed version looks incorrect as well.
>
> For anybody who wants to test this problem, here's a test file:
>
> --- BEGIN TEST FILE ---
> \documentclass[12pt]{article}
> \usepackage{amsmath}\usepackage{amssymb}
> \begin{document}
> $$\sqrt{\dfrac{1}{2}}$$ \\ $$\left(\dfrac{1}{2}\right)$$
> \end{document}
> --- END TEST FILE ---
>
> The printed version has truncated radical and parentheses when printed
> from TeXShop or Preview. However, Acrobat views and prints this just
> fine.
>
> Ugh. Hope this isn't a NSPDFRepresentation bug.
>
> --
> Andrew Farmer
> andfarm at thibs.menloschool.org
>
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