Re: I haved resolved font Italic for FT_GLYPH_FORMAT_BITMAP, this is my code

[Alexei Podtelezhnikov]

Hi Liu,

Thank you for your contribution. I understand the idea of shear
transformation applied to bitmaps. However, your implementation is
incomplete and not suitable for FreeType just yet.

> 1. ftbitmap.h
>   FT_EXPORT( FT_Error )
>   FT_Bitmap_Italic(
>                       FT_Library  library,
>                       FT_Bitmap*  bitmap,
>                       FT_Pos      xStrength,
>                       FT_Pos      yStrength );

In actuality you only implement horizontal shear. Also I think
negative xStrength is mishandled. It only matters if offset  decreases
or increases from top to bottom.

> 2. ftbitmap.c
>
> #define TAISHAN_FONT_ITALIC_VALUE 0.20F

FreeType does not use floating numbers and it needs to be explained.
Why divide by 5 and not 4?  You do not even use newWidth.

Please clean up you by removing all irrelevant variables and code.

Thank you,
Alexei