Re: [ft] Text outline rendering

[Yves Daoust]

Regarding spacing, do you mean that the 'advance' parameter takes care of
that ?

>From your explanations and from what I see in the tutorial / manual, I
understand that I need to work glyph by glyph. (No problem for me, I just
wanted to know.)

Thanks,

        Yves

-----Original Message-----
From: address@hidden [mailto:address@hidden On Behalf Of Wojciech
Mamrak
Sent: Tuesday, June 18, 2013 12:53 PM
To: Yves Daoust
Cc: suzuki toshiya; address@hidden
Subject: Re: [ft] Text outline rendering

> There are the issues of spacing, alignment, ASCII code to glyph number...
Is that also built-in ?

The latter is (ASCII is the subset of Unicode, and Unicode charmap is
default in FT), so basically you don't have to worry about anything.
If you had to deal with some Unicode encoded string (like UTF8), then you
would have to extract each charcode/code point at first.
If by spacing you mean advancing from one character to another, then yes as
well.
Yet with text alignment you will have to deal by yourself or use some other
library.

2013/6/18 Yves Daoust <address@hidden>:
>
>
> Suzuki,
>
>
>
> Thank you for the quick answer.
>
>
>
> FT_Outline_Decompose seems to be exactly what I need. Actually, I deal 
> with the FXG file format, a close relative to SVG. But I do process 
> the curves before saving them.
>
>
>
> Now I assume I have to code the generation of the outlines from the 
> given string. There are the issues of spacing, alignment, ASCII code 
> to glyph number... Is that also built-in ?
>
>
>
> If your code shows how to accomplish that, for sure I'd be glad to 
> look at it.
>
>
>
>                 Yves
>
>
>
> -----Original Message-----
> From: address@hidden
> [mailto:address@hidden On 
> Behalf Of suzuki toshiya
> Sent: Tuesday, June 18, 2013 11:28 AM
> To: address@hidden
> Subject: Re: [ft] Text outline rendering
>
>
>
> Hi Yves,
>
>
>
> To retrieve the vector data from TTF via FreeType2, 
> FT_Outline_Decompose() function would be useful. Giving a function 
> pointer table calling the functions to move currentpoint, or to draw 
> straight, cubic or conic curves,
>
> FT_Outline_Decompose()
>
> calls them to trace the vector data in the "outline" member in glyph slot.
>
>
>
> I've ever written a small sample making SVG by calling 
> FT_Outline_Decompose().
>
> If you want, I will send it.
>
>
>
> Regards,
>
> mpsuzuki
>
>
>
> On 06/18/2013 06:05 PM, Yves Daoust wrote:
>
>>                  Hi All,
>
>>
>
>> I am new to FreeType.
>
>>
>
>> I am involved in a project where text needs to be rendered in vector
form.
>> I mean I have text strings, font information (TTF), possible 
>> geometric transforms, and I need to generate the corresponding 
>> outlines in vector form (sequences of Bezier arcs, so just lists of 
>> control point coordinates; I don't need the rendered bitmap).
>
>>
>
>> After a first search in the documentation, I am convinced that all 
>> the required machinery is there but I want to be sure this is 
>> feasible. If yes, where can I start ?
>
>>
>
>> Regards,
>
>>
>
>>                  Yves Daoust
>
>>
>
>>
>
>>
>
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