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[cff] Fix for hints that touch.

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* src/cff/cf2hints.c (cf2_hintmap_insertHint): Fix condition for
finding index value of insertion point.
This commit is contained in:
Dave Arnold 2013-11-08 10:52:51 +01:00 committed by Werner Lemberg
parent 5e225b7c15
commit dd21301ef2
2 changed files with 23 additions and 7 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2013-11-08 Dave Arnold <darnold@adobe.com>
[cff] Fix for hints that touch.
* src/cff/cf2hints.c (cf2_hintmap_insertHint): Fix condition for
finding index value of insertion point.
2013-11-06 Werner Lemberg <wl@gnu.org>
[truetype] Fix handling of phantom points in composite glyphs.

23
src/cff/cf2hints.c
View File

@ -596,22 +596,31 @@
indexInsert = 0;
for ( ; indexInsert < hintmap->count; indexInsert++ )
{
if ( hintmap->edge[indexInsert].csCoord > firstHintEdge->csCoord )
if ( hintmap->edge[indexInsert].csCoord >= firstHintEdge->csCoord )
break;
}
/*
* Discard any hints that overlap in character space. Most often,
* this is while building the initial map, but in theory, it can also
* occur because of darkening.
* Discard any hints that overlap in character space. Most often, this
* is while building the initial map, where captured hints from all
* zones are combined. Define overlap to include hints that `touch'
* (overlap zero). Hiragino Sans/Gothic fonts have numerous hints that
* touch. Some fonts have non-ideographic glyphs that overlap our
* synthetic hints.
*
* Overlap also occurs when darkening stem hints that are close.
*
*/
if ( indexInsert < hintmap->count )
{
/* we are inserting before an existing edge: */
/* we are inserting before an existing edge: */
/* verify that an existing edge is not the same */
if ( hintmap->edge[indexInsert].csCoord == firstHintEdge->csCoord )
return; /* ignore overlapping stem hint */
/* verify that a new pair does not straddle the next edge */
if ( isPair &&
hintmap->edge[indexInsert].csCoord < secondHintEdge->csCoord )
if ( isPair &&
hintmap->edge[indexInsert].csCoord <= secondHintEdge->csCoord )
return; /* ignore overlapping stem hint */
/* verify that we are not inserting between paired edges */