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freetype2
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Fix thinko in spline flattening. 

FT_MAX_CURVE_DEVIATION is dependent on the value of ONE_PIXEL.

* src/smooth/ftgrays.c (FT_MAX_CURVE_DEVIATION): Remove it and
replace it everywhere with ONE_PIXEL/8.
This commit is contained in:
Werner Lemberg 2010-10-15 20:44:15 +02:00
parent 463dddadfb
commit 34d61e8637
2 changed files with 12 additions and 8 deletions
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9
ChangeLog
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@ -1,3 +1,12 @@
2010-10-15 Alexei Podtelezhnikov <apodtele@gmail.com>
Fix thinko in spline flattening.
FT_MAX_CURVE_DEVIATION is dependent on the value of ONE_PIXEL.
* src/smooth/ftgrays.c (FT_MAX_CURVE_DEVIATION): Remove it and
replace it everywhere with ONE_PIXEL/8.
2010-10-13 suzuki toshiya <mpsuzuki@hiroshima-u.ac.jp>
[raccess] Skip unrequired resource access rules by Darwin VFS.

11
src/smooth/ftgrays.c
View File

@ -91,11 +91,6 @@
#define FT_COMPONENT trace_smooth
/* The maximum distance of a curve from the chord, in 64ths of a pixel; */
/* used when flattening curves. */
#define FT_MAX_CURVE_DEVIATION 16
#ifdef _STANDALONE_
@ -891,14 +886,14 @@ typedef ptrdiff_t FT_PtrDist;
if ( dx < dy )
dx = dy;
if ( dx <= FT_MAX_CURVE_DEVIATION )
if ( dx <= ONE_PIXEL / 8 )
{
gray_render_line( RAS_VAR_ UPSCALE( to->x ), UPSCALE( to->y ) );
return;
}
level = 1;
dx /= FT_MAX_CURVE_DEVIATION;
dx /= ONE_PIXEL / 8;
while ( dx > 1 )
{
dx >>= 2;
@ -1074,7 +1069,7 @@ typedef ptrdiff_t FT_PtrDist;
goto Split;
/* Max deviation may be as much as (s/L) * 3/4 (if Hain's v = 1). */
s_limit = L * (TPos)( FT_MAX_CURVE_DEVIATION / 0.75 );
s_limit = L * (TPos)( ONE_PIXEL / 6 );
/* s is L * the perpendicular distance from P1 to the line P0-P3. */
dx1 = arc[1].x - arc[0].x;