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Simplify math.

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Suggested by Alexei Podtelezhnikov <apodtele@gmail.com>.

* src/raster/ftraster.c (Vertical_Sweep_Drop, Horizontal_Sweep_Drop,
Horizontal_Gray_Sweep_Drop): Do it.
This commit is contained in:
Werner Lemberg 2009-06-07 08:29:30 +02:00
parent 90c699af0c
commit 2f2b780e00
2 changed files with 14 additions and 6 deletions
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8
ChangeLog
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@ -1,3 +1,11 @@
2009-06-07 Werner Lemberg <wl@gnu.org>
Simplify math.
Suggested by Alexei Podtelezhnikov <apodtele@gmail.com>.
* src/raster/ftraster.c (Vertical_Sweep_Drop, Horizontal_Sweep_Drop,
Horizontal_Gray_Sweep_Drop): Do it.
2009-06-04 Werner Lemberg <wl@gnu.org>
Preparation for fixing scan conversion rules 4 and 6.

12
src/raster/ftraster.c
View File

@ -2229,7 +2229,7 @@
break;
case 4: /* smart drop-outs including stubs */
pxl = FLOOR( ( x1 + x2 + 1 ) / 2 + ras.precision_half - 1 );
pxl = FLOOR( ( x1 + x2 - 1 ) / 2 + ras.precision_half );
break;
case 1: /* simple drop-outs excluding stubs */
@ -2275,7 +2275,7 @@
if ( ras.dropOutControl == 1 )
pxl = e2;
else
pxl = FLOOR( ( x1 + x2 + 1 ) / 2 + ras.precision_half - 1 );
pxl = FLOOR( ( x1 + x2 - 1 ) / 2 + ras.precision_half );
break;
default: /* modes 2, 3, 6, 7 */
@ -2424,7 +2424,7 @@
break;
case 4: /* smart drop-outs including stubs */
pxl = FLOOR( ( x1 + x2 + 1 ) / 2 + ras.precision_half - 1 );
pxl = FLOOR( ( x1 + x2 - 1 ) / 2 + ras.precision_half );
break;
case 1: /* simple drop-outs excluding stubs */
@ -2442,7 +2442,7 @@
if ( ras.dropOutControl == 1 )
pxl = e2;
else
pxl = FLOOR( ( x1 + x2 + 1 ) / 2 + ras.precision_half - 1 );
pxl = FLOOR( ( x1 + x2 - 1 ) / 2 + ras.precision_half );
break;
default: /* modes 2, 3, 6, 7 */
@ -2674,7 +2674,7 @@
break;
case 4: /* smart drop-outs including stubs */
e1 = FLOOR( ( x1 + x2 + 1 ) / 2 + ras.precision_half - 1 );
e1 = FLOOR( ( x1 + x2 - 1 ) / 2 + ras.precision_half );
break;
case 1: /* simple drop-outs excluding stubs */
@ -2692,7 +2692,7 @@
if ( ras.dropOutControl == 1 )
e1 = e2;
else
e1 = FLOOR( ( x1 + x2 + 1 ) / 2 + ras.precision_half - 1 );
e1 = FLOOR( ( x1 + x2 - 1 ) / 2 + ras.precision_half );
break;