Re: rasterization weirdness with Skurri.TTF?

[Werner LEMBERG]

> I'm looking at Skurri.TTF
> (http://rover.wiesbaden.netsurf.de/~kikita/s.htm) and am having
> trouble understanding some of the metrics that are returned.

This font is buggy; the `loca' table appears corrupt to FontTools, and
`hmtx' contains too much data -- Just, can you check this?  Maybe you
can implement some recovering so that ttDump doesn't abort but emits
warnings instead.

> First of all, the yMax and yMin values for the face's bounding box
> are 988 and -306, respectively. That would mean that the tallest
> glyph for the entire face would be 1294/64 (or 20.22) font units
> tall.

Don't divide by 64 -- font units are integer values.

> However, as I'm loading glyphs from the face, I see that the 'l'
> (lowercase L) glyph (among others) has a height of 1794/64 (28.03),
> which is far greater than the bounding box height of the entire
> face!
> 
> I can see why someone would design a font that's greater than the
> height (asc+desc+lead) of the face, but why would the face's
> bounding box not report this height?  Isn't the bounding box
> supposed to enclose all glyphs? It seems weird to me that it isn't
> consistent with some of the letters in the face.

A lot of data seems to be incorrect...


    Werner