Re: [ft] Scaline for rasterizer?

[Aya Koshigaya]

Ah, forget my question... I solved it already.. :)

Just multiply the 100.453 with 64 and that's it.. ^^

Thanks a lot,
Aya


On 08.09.2009, at 11:44, Aya Koshigaya wrote:

> Hi,
>
> okay.. so if I am right, to draw a line at a Y = 100, i'd give the  
> rasterizer the value "100 << 6".. right?
> But as soon as I want a line at 100.453, I have to do some  
> calculations to get the "453" speratated etc.. so, is there any easy  
> to use FT-funktion for converting a float to the fixed float value?
>
> Thanks,
> Aya
>
>
> On 08.09.2009, at 11:21, Mickey Gabel wrote:
>
> > Aya Koshigaya wrote:
> > > Mhh ... okay, thanks :)
> > > But how do I convert my value to a 26.6 float? And how do I store  
> > > it in the rasterizer, since FT_POS is declared as "signed long"..  
> > > not float..?
> > > Thanks,
> > > Aya
> >
> > Fixed-point arithmetic is not very complicated to understand. It's  
> > mostly regular integer math with a fixed scaling.
> > You can start here: http://en.wikipedia.org/wiki/Fixed-point_arithmetic
> >
> > FT2 has some very nice functions for using fixed-point. See http://www.freetype.org/freetype2/docs/reference/ft2-computations.html 
> >  .
> >
> >
> >
> >
> >
> > _______________________________________________
> > Freetype mailing list
> > address@hidden
> > http://lists.nongnu.org/mailman/listinfo/freetype
>
>
>
> _______________________________________________
> Freetype mailing list
> address@hidden
> http://lists.nongnu.org/mailman/listinfo/freetype