diff options
| -rw-r--r-- | src/gui/painting/qgrayraster.c | 36 |
1 files changed, 20 insertions, 16 deletions
diff --git a/src/gui/painting/qgrayraster.c b/src/gui/painting/qgrayraster.c index ec9ebeb71f..5d665cdbac 100644 --- a/src/gui/painting/qgrayraster.c +++ b/src/gui/painting/qgrayraster.c @@ -963,49 +963,53 @@ const QT_FT_Vector* control2, const QT_FT_Vector* to ) { + TPos dx, dy, da, db; int top, level; int* levels; QT_FT_Vector* arc; - int mid_x = ( DOWNSCALE( ras.x ) + to->x + - 3 * (control1->x + control2->x ) ) / 8; - int mid_y = ( DOWNSCALE( ras.y ) + to->y + - 3 * (control1->y + control2->y ) ) / 8; - TPos dx = DOWNSCALE( ras.x ) + to->x - ( mid_x << 1 ); - TPos dy = DOWNSCALE( ras.y ) + to->y - ( mid_y << 1 ); + dx = DOWNSCALE( ras.x ) + to->x - ( control1->x << 1 ); if ( dx < 0 ) dx = -dx; + dy = DOWNSCALE( ras.y ) + to->y - ( control1->y << 1 ); if ( dy < 0 ) dy = -dy; if ( dx < dy ) dx = dy; + da = dx; + + dx = DOWNSCALE( ras.x ) + to->x - 3 * ( control1->x + control2->x ); + if ( dx < 0 ) + dx = -dx; + dy = DOWNSCALE( ras.y ) + to->y - 3 * ( control1->x + control2->y ); + if ( dy < 0 ) + dy = -dy; + if ( dx < dy ) + dx = dy; + db = dx; level = 1; - dx /= ras.cubic_level; - while ( dx > 0 ) + da = da / ras.cubic_level; + db = db / ras.conic_level; + while ( da > 0 || db > 0 ) { - dx >>= 2; + da >>= 2; + db >>= 3; level++; } if ( level <= 1 ) { - TPos to_x, to_y; + TPos to_x, to_y, mid_x, mid_y; to_x = UPSCALE( to->x ); to_y = UPSCALE( to->y ); - - /* Recalculation of midpoint is needed only if */ - /* UPSCALE and DOWNSCALE have any effect. */ - -#if ( PIXEL_BITS != 6 ) mid_x = ( ras.x + to_x + 3 * UPSCALE( control1->x + control2->x ) ) / 8; mid_y = ( ras.y + to_y + 3 * UPSCALE( control1->y + control2->y ) ) / 8; -#endif gray_render_line( RAS_VAR_ mid_x, mid_y ); gray_render_line( RAS_VAR_ to_x, to_y ); |