RE: [Freetype] where to place the origin before rendering

[Turner, David]

Hello,

> I'm trying to render a font of pixel height 64 into an
> area of height 68 pixels.
> 
What do you mean by a "font of pixel height 64" exactly ?
Do you realize that "64 pixels" are a nominal size that may
have nothing to do with the "real" pixel height of characters
on screen ?

> How can I determine the vertical pixel origin before rendering?
> 
> I add bitmap_top to the pen before rendering each character so
> they get displaced outside of the area I'm trying to render in.
> 

"bitmap_top" is positive for upwards y-coordinates. If your
target surface uses the opposite convention, like most graphics
library, you'll need to _substract_ it to the vertical pen
position to get correct placement.

Hope this helps,

- David Turner
- The FreeType Project  (www.freetype.org)


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