Due to the way the 8SED algorithm works we need to keep
a track of distances and nearest point of all the pixels/
grid points.
* src/sdf/ftbsdf.c (BSDF_TRaster): Added struct to
hold the `FT_Memory' reference, to be used to allocate
memory.
* src/sdf/ftbsdf.c (ED, BSDF_Worker): Added few more
essential struct. `ED' contains infomation about the
nearest point. `BSDF_Worker' is used to combine all
the essentail parameters to functions.
* src/sdf/ftbsdf.c (bsdf_copy_source_to_target =>
bsdf_init_distance_map): Renamed.
* src/sdf/ftbsdf.c (*): Various minor changes.
* src/sdf/sdf.c: Change the order of source include
because `ftsdf.c' change some internal freetype
defines which are required in `ftbsdf.c'.
* src/base/ftobjs.c (FT_Render_Glyph_Internal): Remove
the bitmap check which prevent calling renderers
if the glyph is already a bitmap. The `bsdf' renderer
requires a bitmap for conversion.
* src/base/ftobjs.c (ft_add_renderer): Remove the glyph
format check which ensures that the glyph format for
a renderer is `FT_GLYPH_FORMAT_OUTLINE', again the `bsdf'
renderer has `FT_GLYPH_FORMAT_BITMAP' as a glyph format,
so we need to remove the condition to initialize the
renderer properly.
* src/sdf/ftbsdf.c (*): Added a rasterizer for the
`bsdf' renderer and created necessary functions.
* src/sdf/ftbsdf.h: Add forward declaration of the
rasterizer.
* src/sdf/ftsdfrend.c (ft_bitmap_sdf_renderer_class):
Define the new `bsdf' rendere and add the
`FT_Renderer_RenderFunc' function, the rest is
same as the `sdf' renderer.
* src/sdf/ftsdfrend.h: Add forward declaration of the
renderer.
* src/sdf/rules.mk (SDF_DRV_SRC): Add the new `ftbsdf.c'
file to the compile list.
* src/sdf/sdf.c: Inclue the `ftbsdf.c' file if making
single object.
Anuj Verma