stbtt_GetCodepointBitmapBoxSubpixel function

  1. @Native<Void Function(Pointer<stbtt_fontinfo>, Int, Float, Float, Float, Float, Pointer<Int>, Pointer<Int>, Pointer<Int>, Pointer<Int>)>(ffi.Pointer<stbtt_fontinfo>, ffi.Int, ffi.Float, ffi.Float, ffi.Float, ffi.Float, ffi.Pointer<ffi.Int>, ffi.Pointer<ffi.Int>, ffi.Pointer<ffi.Int>, ffi.Pointer<ffi.Int>)>()
void stbtt_GetCodepointBitmapBoxSubpixel(
  1. Pointer<stbtt_fontinfo> font,
  2. int codepoint,
  3. double scale_x,
  4. double scale_y,
  5. double shift_x,
  6. double shift_y,
  7. Pointer<Int> ix0,
  8. Pointer<Int> iy0,
  9. Pointer<Int> ix1,
  10. Pointer<Int> iy1,
)

get the bbox of the bitmap centered around the glyph origin; so the bitmap width is ix1-ix0, height is iy1-iy0, and location to place the bitmap top left is (leftSideBearing*scale,iy0). (Note that the bitmap uses y-increases-down, but the shape uses y-increases-up, so CodepointBitmapBox and CodepointBox are inverted.)

Implementation

@ffi.Native<
  ffi.Void Function(
    ffi.Pointer<stbtt_fontinfo>,
    ffi.Int,
    ffi.Float,
    ffi.Float,
    ffi.Float,
    ffi.Float,
    ffi.Pointer<ffi.Int>,
    ffi.Pointer<ffi.Int>,
    ffi.Pointer<ffi.Int>,
    ffi.Pointer<ffi.Int>,
  )
>()
external void stbtt_GetCodepointBitmapBoxSubpixel(
  ffi.Pointer<stbtt_fontinfo> font,
  int codepoint,
  double scale_x,
  double scale_y,
  double shift_x,
  double shift_y,
  ffi.Pointer<ffi.Int> ix0,
  ffi.Pointer<ffi.Int> iy0,
  ffi.Pointer<ffi.Int> ix1,
  ffi.Pointer<ffi.Int> iy1,
);