On 3/24/2017 8:24 AM, Aditya Mahajan wrote:
On Thu, 23 Mar 2017, Hans Hagen wrote:
On 3/8/2017 2:45 AM, Aditya Mahajan wrote:
On Tue, 7 Mar 2017, Hans Hagen wrote:
\MEAN[delimiter=auto] expands to \left\langle .. \right\langle
\MEAN[delimiter=] expands to \langle .. \rangle
\MEAN[delimiter=big] expands to \big\langle ... \big\rangle
\MEAN[delimiter=Big] expands to \Big\langle ... \Big\rangle
\MEAN[delimiter=bigg] expands to \bigg\langle ... \bigg\rangle
\MEAN[delimiter=Bigg] expands to \Bigg\langle ... \Bigg\rangle
I am not sure whether `delimiter` is the best key. I think that
`scale`
may be better, but using `scale` for specifying the scaling of math
delimiters will be inconsistent with how `scale` is used everywhere
else. Another option is to use `alternative` key.
it would be something factor=2 or so, not the funny XxXxxxXX kind of
flags
Sure. factor=(auto|none|1|2|3|4) is also ok (and would be directly
mapped to choosemathbig).
actually we will hook into a new feature of luatex for specifying the
size of delimiters (so no vbox hack) .. factors are multipliers of
bodyfontsize
\definemathfence [MEAN] [angle] [command=yes, color=blue, factor=2.5]
\starttext
\startTEXpage \startformula
\MEAN[factor=1]{\sum_{i = 1}^n A_i x_i }
\hbox{ vs. }
\MEAN{ \sum_{i = 1}^n A_i x_i }
\hbox{ vs. }
\bigg\langle \sum_{i=1}^n A_i x_i \bigg\rangle
\stopformula \stopTEXpage
\stoptext
Thanks.
If I understand the code correctly (sorry, haven't tested it yet),
factor=, factor=none, and factor=auto all behave the same (all insert
\normalleft ... \normalright)
i prefer empty to be as before we even had factor i.e. same as auto
\ifx\p_factor\empty
#2%
\else\ifx\p_factor\v!auto
#2%
\else\ifx\p_factor\v!none
#3\s!height\zeropoint\s!depth\zeropoint\s!axis
#2%
\else
\scratchdimen\dimexpr\p_factor\bodyfontsize/2\relax
#3\s!height\scratchdimen\s!depth\scratchdimen\s!axis
\fi\fi\fi
I think that it may be more consistent if factor= and factor=none do not
scale the delimited at all. To maintain backward compatibility, the
default value of factor can be set to auto.
Also what values of factor give scaling equal to \big, \Big, \bigg, and
\Bigg?
These values are actually somewhat weird and relate to the design size
of a font .. derived from plain:
0.85
1.15
1.45
1.75
but ... as these are extensibles a font might have more values. The
factor is n times the bodyfontsize (50% above and below the axis)
what actually comes out depends on the chosen font
Hans
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