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Re: [ft] wrong bbox values..
From: |
Werner LEMBERG |
Subject: |
Re: [ft] wrong bbox values.. |
Date: |
Thu, 04 Feb 2010 16:36:56 +0100 (CET) |
> Can anybody please explain me why is it so?
>
> Pen.x = 1*64;
> Pen.y= 1*64;
> bbox = [0 1 5 9] Unicode Val = 66(character f)
> bbox = [1 -1 7 7] Unicode Val = 67(character g)
> bbox = [1 1 7 9] Unicode Val = 68(character h)
>
> Pen.x=0;
> Pen.y=0;
> bbox = [-1 0 4 8] Unicode Val = 66
> bbox = [0 -2 6 6] Unicode Val = 67
> bbox = [0 0 6 8] Unicode Val = 68
>
> When i changed my pen position to start from 0 index,Why my xmin
> value is negative?
It seems that in your font the `f' glyph slightly extends to the left
of the origin.
> If i would like to know the distance ( i mean offset) between two
> glyphs,how can i find out?
The distance between two glyphs is basically a meaningless value. You
draw a glyph at a given position, then you increase the position by
the advance width, then you draw the next glyph.
Werner