Re: [ft] How to get Horizontal Advance on Stroked Glyph

[johnpf74]

Thank you very much Werner!

Does that mean if, in general, if I add an N pixel stroke, I would add a 2*N
pixel advance to account for the stroke on each side, where N is an integer?
Would I also do the same for advancing each line of text vertically?

Also, how do I advise a patch to update the documentation? Is that something
that you will handle?

Thanks, John


Werner LEMBERG wrote:
> 
> 
>> I am trying to get the advance amount for a stroked glyph. I cannot
>> find it anywhere in the documentation. I have a code snippet
>> below. Basically when I do the algorithm, the advance amount is not
>> accounting for the width of the outline, so the next character's
>> outline overlaps the previous character.
> 
> As you correctly state, the stroker doesn't increase the advance
> width.  You have to do this by yourself.
> 
> Reason for not modifying the advance width is the non-linearity
> between stroke thickness and advance width.  For example, you might
> add a very slight `boldness' (say, 0.2px) to a glyph without wanting
> to change the advance widths at all.
> 
> Please advise a patch to the documentation to make this clear.
> 
> 
>     Werner
> 
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