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[smooth] Minor refactoring. 

* src/smooth/ftgrays.c (gray_render_scanline, gray_render_line):
Updated.
This commit is contained in:
Alexei Podtelezhnikov 2016-08-05 23:36:16 -04:00
parent 053943a757
commit 97718f3c91
2 changed files with 32 additions and 18 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2016-08-05 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Minor refactoring.
* src/smooth/ftgrays.c (gray_render_scanline, gray_render_line):
Updated.
2016-07-29 Werner Lemberg <wl@gnu.org> 2016-07-29 Werner Lemberg <wl@gnu.org>
[sfnt, truetype] Don't abort on invalid `maxComponentDepth'. [sfnt, truetype] Don't abort on invalid `maxComponentDepth'.

29
src/smooth/ftgrays.c
View File

@ -659,12 +659,12 @@ typedef ptrdiff_t FT_PtrDist;
fx1 = (TCoord)( x1 - SUBPIXELS( ex1 ) ); fx1 = (TCoord)( x1 - SUBPIXELS( ex1 ) );
fx2 = (TCoord)( x2 - SUBPIXELS( ex2 ) ); fx2 = (TCoord)( x2 - SUBPIXELS( ex2 ) );
delta = y2 - y1;
/* everything is located in a single cell. That is easy! */ /* everything is located in a single cell. That is easy! */
/* */ /* */
if ( ex1 == ex2 ) if ( ex1 == ex2 )
{ {
delta = y2 - y1;
ras.area += (TArea)(( fx1 + fx2 ) * delta); ras.area += (TArea)(( fx1 + fx2 ) * delta);
ras.cover += delta; ras.cover += delta;
return; return;
@ -673,14 +673,17 @@ typedef ptrdiff_t FT_PtrDist;
/* ok, we'll have to render a run of adjacent cells on the same */ /* ok, we'll have to render a run of adjacent cells on the same */
/* scanline... */ /* scanline... */
/* */ /* */
p = ( ONE_PIXEL - fx1 ) * ( y2 - y1 );
first = ONE_PIXEL;
incr = 1;
dx = x2 - x1; dx = x2 - x1;
if ( dx < 0 ) if ( dx > 0 )
{ {
p = fx1 * ( y2 - y1 ); p = ( ONE_PIXEL - fx1 ) * delta;
first = ONE_PIXEL;
incr = 1;
}
else
{
p = fx1 * delta;
first = 0; first = 0;
incr = -1; incr = -1;
dx = -dx; dx = -dx;
@ -764,8 +767,6 @@ typedef ptrdiff_t FT_PtrDist;
dy = to_y - ras.y; dy = to_y - ras.y;
/* vertical line - avoid calling gray_render_scanline */ /* vertical line - avoid calling gray_render_scanline */
incr = 1;
if ( dx == 0 ) if ( dx == 0 )
{ {
TCoord ex = TRUNC( ras.x ); TCoord ex = TRUNC( ras.x );
@ -773,8 +774,12 @@ typedef ptrdiff_t FT_PtrDist;
TArea area; TArea area;
if ( dy > 0)
{
first = ONE_PIXEL; first = ONE_PIXEL;
if ( dy < 0 ) incr = 1;
}
else
{ {
first = 0; first = 0;
incr = -1; incr = -1;
@ -806,11 +811,13 @@ typedef ptrdiff_t FT_PtrDist;
} }
/* ok, we have to render several scanlines */ /* ok, we have to render several scanlines */
if ( dy > 0)
{
p = ( ONE_PIXEL - fy1 ) * dx; p = ( ONE_PIXEL - fy1 ) * dx;
first = ONE_PIXEL; first = ONE_PIXEL;
incr = 1; incr = 1;
}
if ( dy < 0 ) else
{ {
p = fy1 * dx; p = fy1 * dx;
first = 0; first = 0;