Re: Small integral signes with Palatino

[Hans Hagen <pragma@wxs.nl>]

On 28-5-2012 01:27, Aditya Mahajan wrote:
> On Mon, 28 May 2012, luigi scarso wrote:
>
>> Different, but still wrong
>>
>> \unprotect
>> \starttypescript [\s!math] [palatinomath]
>> \definefontsynonym [PalatinoMath]
>> [\s!file:texgyrepagella-math-regular.otf]
>> \stoptypescript
>> \starttypescript [\s!math] [palatinomath] [\s!name]
>> \definefontsynonym [MathRoman] [PalatinoMath]
>> [\s!features=\s!math\mathsizesuffix]
>> \stoptypescript
>> \starttypescript [PalatinoTest]
>> \definetypeface [\typescriptone] [\s!rm] [\s!serif] [palatino]
>> [\s!default]
>> \definetypeface [\typescriptone] [\s!mm] [\s!math] [palatinomath]
>> [\s!default]
>> \quittypescriptscanning
>> \stoptypescript
>> \protect
>>
>> \usetypescript[PalatinoTest]
>> \setupbodyfont[PalatinoTest,12pt]
>> \starttext
>> \input knuth \par
>> \startformula
>> \int_0^\infty \frac{1}{x} {\rm d} x
>> \stopformula
>> \stoptext
>
> In this case \int and \sum are of the same size, so it appears as a
> design choice, and more importantly, we can patch the font to change
> DisplayOperatorMinHeight.

It's really weird ... in the virtual font builder we have

DisplayOperatorMinHeight  = t . math_operator_size    . text_style

and there has been a good reason for this otherwise it would not be 
there. For the normal (12pt) size this becomes 1040448 for px as well as 
tx. Both fonts (when looking at them with \showfont[pxex.tfm] etc have 
the same shapes.

Concerning the rest of the parameters, only for this case irrelevant 
differ a bit.

% name px tx

% RadicalRuleThickness	46399	44040	2359
% FractionDenominatorDisplayStyleGapMin	139197	132120	7077
% OverbarVerticalGap	139197	132120	7077
% RadicalDisplayStyleVerticalGap	133103	130744	2359
% UnderbarVerticalGap	139197	132120	7077
% FractionNumeratorGapMin	46399	44040	2359
% OverbarRuleThickness	46399	44040	2359
% StackGapMin	139197	132120	7077
% RadicalVerticalGap	57998.75	55050	2948.75
% StackDisplayStyleGapMin	324793	308280	16513
% AccentBaseHeight	353107.968	353894.4	-786.43200000003
% FractionRuleThickness	46399	44040	2359
% FractionDenominatorGapMin	46399	44040	2359
% OverbarExtraAscender	46399	44040	2359
% SubSuperscriptGapMin	185596	176160	9436
% MinConnectorOverlap	11599.75	11010	589.75
% FractionNumeratorDisplayStyleGapMin	139197	132120	7077
% UnderbarRuleThickness	46399	44040	2359
% RadicalExtraAscender	46399	44040	2359

So, there is no real reason for px to behave different than tx. However, 
when we nil DisplayOperatorMinHeight we get the scaled glyph. Okay, we 
could have threshold issue but even putting some real large math mess 
after itm it will not bump to the next size shape (there is only one 
larger size btw) .. puzzling

> BTW, what is the status of Pagella Math? Should we default to that
> instead of px-fonts?

not yet

Hans

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                                           Hans Hagen | PRAGMA ADE
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