Vertically center `integral.size1`

[tmke8]

Closes #542

I used this script to center it. The script seems to have moved it down by 308. It looks correct to me, but I may be wrong.

I also don't know whether I need to change hinting somewhere? I didn't see anything obvious in the .sfd file.

This also seems to center all the other large integral glyphs (including the ss08 glyphs) because they all refer to integral.size1.

[khaledhosny]

If we are going to do this, you have to check all big operators not just integral. It should also be centered around math axis.

[tmke8]

I modified the script to center around the math axis:

startglyph = 1114441
endglyph = 1114441  

thisfont =  fontforge.activeFont()  
for i in range(startglyph,endglyph+1):  
    ytop = thisfont[i].boundingBox()[-1] # counted from baseline, excluding descent!  
    ybot = thisfont[i].boundingBox()[1] # same note as above
    # Calculation method:
    # Current midpoint of glyph (counted from baseline) = (ytop + ybot) / 2
    translation = thisfont.math.AxisHeight - ((ytop + ybot) / 2)
    thisfont[i].transform( psMat.translate( 0, translation ))

The difference to before is 6 coordinate points.

I also investigated the other big operators (those with .size1 suffix in their name), but they all look centered to me:

Produced with this latex snippet, rendered on Temml.org

\begin{aligned}
&\cdot\int\iint\iiint\iiiint\oint\oiint\oiiint\intclockwise\varointclockwise\sum\prod\coprod \cdot\\
&\cdot\bigwedge\bigvee\bigcap\bigcup\bigcupdot\biguplus\bigsqcap\bigsqcup\cdot\bigodot\bigoplus\bigotimes\surd\Big(\Big)\Big\lceil\Big\rceil\Big\langle\Big\rangle\cdot
\end{aligned}

I could nevertheless run the script over these?

[khaledhosny]

I also investigated the other big operators (those with .size1 suffix in their name), but they all look centered to me:

But the image shows that all integrals are not centered. You should also center the text version of the big operators (the radical and parentheses are not big operators so can be left alone).

[tmke8]

But the image shows that all integrals are not centered.

Yes... I guess I wanted to demonstrate the problem again.

Here it is with the patched font:

You should also center the text version of the big operators

You mean the glyphs without .sizeX? Okay, I'll investigate.

[tmke8]

Oh, looking at the new image, I see that the circles are too high! I'll fix it.

[tmke8]

Should be fixed now:

And also for the slanted integrals:

[khaledhosny]

I haven’t checked the font files, but the screenshot looks good to me.