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Document how to scale manually.

This commit is contained in:
Werner Lemberg 2017-07-12 21:58:35 +02:00
parent 229a5535b5
commit b5cab5c9ca
1 changed files with 7 additions and 1 deletions
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8
include/freetype/freetype.h
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@ -1530,7 +1530,13 @@ FT_BEGIN_HEADER
/* values of the corresponding fields in @FT_FaceRec. Some values */
/* like ascender or descender are rounded for historical reasons; */
/* more precise values (for outline fonts) can be derived by scaling */
/* the corresponding @FT_FaceRec values manually. */
/* the corresponding @FT_FaceRec values manually, with code similar */
/* to the following. */
/* */
/* { */
/* scaled_ascender = FT_MulFix( face->root.ascender, */
/* size_metrics->y_scale ); */
/* } */
/* */
/* Note that due to glyph hinting and the selected rendering mode */
/* these values are usually not exact; consequently, they must be */