As I told you earlier: A negative bbox value descends below the
baseline (which has y=0).
How could a bounding box represent both the overall size of the
glyph and the descent at the same time?
Sorry for being imprecise. A bbox consists of four values: The (x,y)
values of the lower left
January 2010 07:42
To: d...@kinematics.com
Cc: freetype@nongnu.org
Subject: Re: [ft] putting text in a box
As I told you earlier: A negative bbox value descends below the
baseline (which has y=0).
How could a bounding box represent both the overall size of the
glyph and the descent
For reference, a good link is also the below, scroll to the bottom which
talks about positioning glyphs on a bitmap of specified size and it also
mentions subtracting the lower left corner of the bounding box from the
pen pos to get the actual glyph aligned with the box.
It seems like the bounding box calculation is always correct. The
problem is that the descender I'm querying is for the font face in
general which I assume accounts for every glyph in the font.
If you have a negative value in the bbox, this is the amount below the
baseline.
I'm
Thanks, I'll try both of those. Do you know, though, of a way to get
the descent value for an individual glyph reliably for any font?
On 1/20/2010 9:51 AM, Werner LEMBERG wrote:
If you have a negative value in the bbox, this is the amount below
the baseline.
I'm not getting negative
Do you know, though, of a way to get the descent value for an
individual glyph reliably for any font?
Normally, computing the cbox (or the bbox, to be absolutely sure for
the weird cases which shouldn't happen with well designed fonts)
should do the right thing.
Werner
Do you know, though, of a way to get the descent value for an
individual glyph reliably for any font?
Normally, computing the cbox (or the bbox, to be absolutely sure for
the weird cases which shouldn't happen with well designed fonts)
should do the right thing.
I guess this is what's
Do you know, though, of a way to get the descent value for an
individual glyph reliably for any font?
Normally, computing the cbox (or the bbox, to be absolutely sure
for the weird cases which shouldn't happen with well designed
fonts) should do the right thing.
I guess this is what's
I guess this is what's confusing me. I looked at the tutorial code
for getting the cbox, for example, and the result of the call is
just that, a box. So that would be a box which completely enclosed
the glyph right?
Yes.
How does that yield the information I need, namely the distance
