Hi, Werner
I'm reading the codes of FT2. In cffobjs.c, it said that "Normalize the font
matrix so that `matrix->xx' is 1 ...", but the code is
{
FT_Matrix* matrix = &dict->font_matrix;
FT_Vector* offset = &dict->font_offset;
FT_ULong* upm = &dict->units_per_em;
FT_Fixed temp = FT_ABS( matrix->yy ); //Why is yy? Should
be matrix->xx?
if ( temp != 0x10000L )
{
*upm = FT_DivFix( *upm, temp );
matrix->xx = FT_DivFix( matrix->xx, temp );
matrix->yx = FT_DivFix( matrix->yx, temp );
matrix->xy = FT_DivFix( matrix->xy, temp );
matrix->yy = FT_DivFix( matrix->yy, temp );
offset->x = FT_DivFix( offset->x, temp );
offset->y = FT_DivFix( offset->y, temp );
}
offset->x >>= 16;
offset->y >>= 16;
}
In most case, it wouldn't cause error. But if yy != xx, the matrix is
normalized that matrix->yy is 1.
BTW, this CFF_MAX_CID_FONTS limit in cfftypes.h is not mentioned in tn5176. Is
it only a real-life limit?
As descibed in tn5176, it's possible to let each glyph has it's own Font DICT.
2009-03-11
Ning Dong
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