Hello,
In what state is FT support for vertical glyph metrics?
I am encountering problem with vertical glyph metrics, when they are
present in a font file. I get a huge number for the linearVertAdvance,
other values look fine, because of that, glyphs are not generated. I
need advance value in design units for WYSIWYG.
While debugging, I found:
In the ttgload.c, line 1768, subtraction is incorrect
advance_height = (FT_UShort)( loader->pp4.y - loader->pp3.y );
should be, according to earlier calculations
advance_height = (FT_UShort)( loader->pp3.y - loader->pp4.y );
Even with that fix, linearVertAdvance is calculated incorrectly. (Should
they use loader->vadvance instead?)
I see the problem, when I try to layout a string of Japanese text using
SimSun.ttf. It looks ok with Arial Unicode MS, but that font does not
have vertical metrics.
Version: 2.1.10
Thank you,
Sergey
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