On 4/5/2013 9:32 AM, Hans Hagen wrote:
On 4/5/2013 2:16 AM, Khaled Hosny wrote:
On Fri, Apr 05, 2013 at 12:55:40AM +0200, Hans Hagen wrote:
On 4/5/2013 12:13 AM, Aditya Mahajan wrote:
On Fri, 5 Apr 2013, Hans Hagen wrote:
On 4/4/2013 11:44 PM, Aditya Mahajan wrote:
On Thu, 4 Apr 2013, Xenia wrote:
Hi context list,
I noticed that the ∓ sign is a little higher than the ± sign, so
that
the + signs are at the same height. But this looks strange and
should be
changed.
Indeed. These look very odd. I tested this with cambria and the
outcome
is similar, so this is not a font bug, but something wrong in
ConTeXt's
math handling.
I'm not sure if I understand the issue
- lm has + and - touching with the + in the same position as the
regular +
- cambria has a gap between + and - and moves the + up and down
Afaik context isn't doing any magic here as these are precomposed
glyphs that directly map.
$a \ruledhbox{$+$} b \ruledhbox{$-$} c$
$a \ruledhbox{$±$} b \ruledhbox{$∓$} c$
they are 'binary' in math mode, just like + and -
The question is not about the shape of the glyph, but their location.
But after looking at the output of latex for CM and Cambria, I am no
longer sure what the correct output should be. For Cambria, ConTeXt and
LaTeX give similar outputs. For CM/LM they give different outputs.
it looks like the open type version has a fitting boundingbox while
the type 1 variants have a bit of the + sticking out:
CFF fonts do not store bounding box info anywhere, the engine just
calculates it based on glyph outlines. For TFM fonts the metrics can be
adjusted to achieve specific alignment.
Sure, but one can 'cheat' with the boundingboxes as they're not cropboxes.
It's no big deal to adapt some metrics in mkiv, but best have the font
do the job.
Experimental in beta:
\definefontfeature [lm-math] [mathdimensions=signs]
\starttext
\startTEXpage[offset=10pt]
$x \ruledhbox{$\pm$} x \ruledhbox{$\mp$} x$
\stopTEXpage
\stoptext
(explanation in font manual, not yet uploaded)
Hans
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