From 00ae29fcd26a3425db5b3f15793796cb6e958411 Mon Sep 17 00:00:00 2001 From: Alexei Podtelezhnikov Date: Sat, 12 Feb 2022 23:42:08 -0500 Subject: [PATCH] [pshinter] Tune PSH_STRONG_THRESHOLD_MAXIMUM value. Before the change, the hinting engine frequently confused horizontal stem and serif hints making some stems too thin and some serifs too thick. The value was tuned using serif fonts from the URW+ base 35 collection. * src/pshinter/pshalgo.c [PSH_STRONG_THRESHOLD_MAXIMUM]: s/30/12/. --- src/pshinter/pshalgo.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/src/pshinter/pshalgo.c b/src/pshinter/pshalgo.c index a237f6c41..dca539766 100644 --- a/src/pshinter/pshalgo.c +++ b/src/pshinter/pshalgo.c @@ -1548,8 +1548,9 @@ /* the accepted shift for strong points in fractional pixels */ #define PSH_STRONG_THRESHOLD 32 - /* the maximum shift value in font units */ -#define PSH_STRONG_THRESHOLD_MAXIMUM 30 + /* the maximum shift value in font units tuned to distinguish */ + /* between stems and serifs in URW+ font collection */ +#define PSH_STRONG_THRESHOLD_MAXIMUM 12 /* find strong points in a glyph */