Re: Question on bitmap fonts
Re: Question on bitmap fonts
- Subject: Re: Question on bitmap fonts
- From: John Stiles <email@hidden>
- Date: Tue, 01 Apr 2008 09:52:22 -0700
If it's rounding, that would be pretty severe. I'd expect at least 6 or
7 viable digits.
Aki Inoue wrote:
From the look of it, I think there is floating-point rounding involved.
After all, the graphics system is treating it as a scalable font so
the notion of bitmap (or pixel-based) font design doesn't apply.
Aki
On 2008/04/01, at 9:48, Tobia Conforto wrote:
Thank you!
I hadn't thought of using gdb :-)
Now I only need to understand why y = -2.66400003 instead of -2.66666651
Tobia
On 1 Apr 2008, at 18:36, Aki Inoue wrote:
This is the information returned from the font.
(gdb) p glyphBBox
$30 = {
origin = {
x = 0,
y = -2.66400003
},
size = {
width = 6,
height = 12
}
}
(gdb) p ascender
$31 = 9.33333302
(gdb) p descender
$32 = 2.66666651
(gdb) p 12 - 2.66400003
$33 = 9.3359999699999996
The bounding box is for Capital Letter A with grave accent. As you
can see, it's too close and sticking out a little.
Aki
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