shithub: freetype+ttf2subf

Download patch

ref: 90a36c5522a93fb6e829851ef29626d20159044e
parent: 46ab6331e0c23bddb563ffd909162aa73364b4bc
author: David Turner <[email protected]>
date: Tue Apr 4 14:21:45 EDT 2000 

a small improvement to the Type 1 hinter, that
comes from research with the auto-hinter. Nothing
fancy but gets rid of the un-normalized widths :-)

git/fs: mount .git/fs: mount/attach disallowed 
--- a/src/type1/t1hinter.c
+++ b/src/type1/t1hinter.c
@@ -889,18 +889,36 @@
       {
         T1_Snap_Zone*  zone       = hints->snap_heights;
         T1_Snap_Zone*  zone_limit = zone + hints->num_snap_heights;
+        T1_Pos         best_dist = 32000;
+        T1_Snap_Zone*  best_zone = 0;
 
         for ( ; zone < zone_limit; zone++ )
         {
-          if ( width_pix < zone->min )
-            break;
-
-          if ( width_pix <= zone->max )
+          T1_Pos  dist;
+          
+          dist = width_pix - zone->min; if (dist < 0) dist = -dist;
+          if (dist < best_dist)
           {
-            width_pix = zone->pix;
-            break;
+            best_zone = zone;
+            best_dist = dist;
           }
         }
+        
+        if (best_zone)
+        {
+          if (width_pix > best_zone->pix)
+          {
+            width_pix -= 0x20;
+            if (width_pix < best_zone->pix)
+              width_pix = best_zone->pix;
+          }
+          else
+          {
+            width_pix += 0x20;
+            if (width_pix > best_zone->pix)
+              width_pix = best_zone->pix;
+          }
+        }
       }
 
       /******************************************************************/
@@ -1053,18 +1071,36 @@
 
       /* Snap pixel width if in stem snap range */
       {
-        T1_Snap_Zone*  zone       = hints->snap_widths;
-        T1_Snap_Zone*  zone_limit = zone + hints->num_snap_widths;
+        T1_Snap_Zone*  zone       = hints->snap_heights;
+        T1_Snap_Zone*  zone_limit = zone + hints->num_snap_heights;
+        T1_Pos         best_dist = 32000;
+        T1_Snap_Zone*  best_zone = 0;
 
         for ( ; zone < zone_limit; zone++ )
         {
-          if ( width_pix < zone->min )
-            break;
-
-          if ( width_pix <= zone->max )
+          T1_Pos  dist;
+          
+          dist = width_pix - zone->min; if (dist < 0) dist = -dist;
+          if (dist < best_dist)
           {
-            width_pix = zone->pix;
-            break;
+            best_zone = zone;
+            best_dist = dist;
+          }
+        }
+        
+        if (best_zone)
+        {
+          if (width_pix > best_zone->pix)
+          {
+            width_pix -= 0x20;
+            if (width_pix < best_zone->pix)
+              width_pix = best_zone->pix;
+          }
+          else
+          {
+            width_pix += 0x20;
+            if (width_pix > best_zone->pix)
+              width_pix = best_zone->pix;
           }
         }
       }