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freetype2
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Code Issues 4 Releases Wiki Activity

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 :-)
This commit is contained in:
David Turner 2000-04-04 18:21:45 +00:00
parent 46ab6331e0
commit 90a36c5522
1 changed files with 50 additions and 14 deletions
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64
src/type1/t1hinter.c
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@ -889,16 +889,34 @@
{
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;
}
}
}