From 7f9b2228a610ad614b77b24503bf02f95e0bf4b8 Mon Sep 17 00:00:00 2001
From: Ebrahim Byagowi <ebrahim@gnu.org>
Date: Tue, 4 Feb 2020 23:05:46 +0330
Subject: [PATCH] [glyf] minor

Improve using https://developer.blender.org/diffusion/B/browse/master/source/blender/blenlib/intern/freetypefont.c$572
---
 src/hb-ot-glyf-table.hh | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/src/hb-ot-glyf-table.hh b/src/hb-ot-glyf-table.hh
index 92d3288e5..a4b685e80 100644
--- a/src/hb-ot-glyf-table.hh
+++ b/src/hb-ot-glyf-table.hh
@@ -1061,14 +1061,12 @@ struct glyf
 				   float to_x, float to_y,
 				   void *user_data)
     {
-      /* based on https://github.com/fonttools/fonttools/blob/a37dab3/Lib/fontTools/pens/basePen.py#L218 */
-      float mid1_x = from_x + 0.6666666667f * (control_x - from_x);
-      float mid1_y = from_y + 0.6666666667f * (control_y - from_y);
-      float mid2_x = to_x + 0.6666666667f * (control_x - to_x);
-      float mid2_y = to_y + 0.6666666667f * (control_y - to_y);
-      funcs->cubic_to (font->em_scalef_x (mid1_x), font->em_scalef_y (mid1_y),
-		       font->em_scalef_x (mid2_x), font->em_scalef_y (mid2_y),
-		       font->em_scalef_x (to_x), font->em_scalef_y (to_y),
+      funcs->cubic_to (font->em_scalef_x ((from_x + 2.f * control_x) / 3.f),
+		       font->em_scalef_y ((from_y + 2.f * control_y) / 3.f),
+		       font->em_scalef_x ((to_x + 2.f * control_x) / 3.f),
+		       font->em_scalef_y ((to_y + 2.f * control_y) / 3.f),
+		       font->em_scalef_x (to_x),
+		       font->em_scalef_y (to_y),
 		       user_data);
     }