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* src/base/ftstroke.c: last (?) bugfixes to the stroker.

This commit is contained in:
David Turner 2004-07-12 20:48:31 +00:00
parent 5cbbf68516
commit 93efd5f88f
2 changed files with 62 additions and 13 deletions
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4
ChangeLog
View File

@ -1,3 +1,7 @@
2004-07-12 David Turner <david@freetype.org>
* src/base/ftstroke.c: last (?) bugfixes to the stroker.
2004-07-11 David Turner <david@freetype.org>
* src/base/ftstroke.c: fixed a bug that prevented the stroker to

71
src/base/ftstroke.c
View File

@ -280,15 +280,62 @@
static void
ft_stroke_border_close( FT_StrokeBorder border )
ft_stroke_border_close( FT_StrokeBorder border,
FT_Bool reverse )
{
FT_UInt start = border->start;
FT_UInt count = border->num_points;
FT_ASSERT( border->start >= 0 );
/* don't record empty paths! */
if ( border->num_points > (FT_UInt)border->start )
if ( count <= start + 1U )
border->num_points = start;
else
{
border->tags[border->start ] |= FT_STROKE_TAG_BEGIN;
border->tags[border->num_points - 1] |= FT_STROKE_TAG_END;
/* copy the last point to the start of this sub-path, since
* it contains the "adjusted" starting coordinates
*/
border->num_points = --count;
border->points[start] = border->points[count];
if ( reverse )
{
/* reverse the points
*/
{
FT_Vector* vec1 = border->points + start + 1;
FT_Vector* vec2 = border->points + count - 1;
for ( ; vec1 < vec2; vec1++, vec2-- )
{
FT_Vector tmp;
tmp = *vec1;
*vec1 = *vec2;
*vec2 = tmp;
}
}
/* then the tags
*/
{
FT_Byte* tag1 = border->tags + start + 1;
FT_Byte* tag2 = border->tags + count - 1;
for ( ; tag1 < tag2; tag1++, tag2-- )
{
FT_Byte tmp;
tmp = *tag1;
*tag1 = *tag2;
*tag2 = tmp;
}
}
}
border->tags[ start ] |= FT_STROKE_TAG_BEGIN;
border->tags[ count - 1 ] |= FT_STROKE_TAG_END;
}
border->start = -1;
@ -473,7 +520,7 @@
{
/* close current open path if any ? */
if ( border->start >= 0 )
ft_stroke_border_close( border );
ft_stroke_border_close( border, 0 );
border->start = border->num_points;
border->movable = 0;
@ -630,9 +677,9 @@
static void
ft_stroke_border_reverse( FT_StrokeBorder border )
{
FT_Vector* point1 = border->points + border->start;
FT_Vector* point1 = border->points + border->start + 1;
FT_Vector* point2 = border->points + border->num_points-1;
FT_Byte* tag1 = border->tags + border->start;
FT_Byte* tag1 = border->tags + border->start + 1;
FT_Byte* tag2 = border->tags + border->num_points-1;
while ( point1 < point2 )
@ -872,7 +919,7 @@
thcos = FT_Cos( theta );
/* TODO: find better criterion
/* TODO: find better criterion to switch off the optimisation
*/
if ( thcos < 0x4000 )
{
@ -1465,7 +1512,7 @@
/* Now end the right subpath accordingly. The left one is */
/* rewind and doesn't need further processing. */
ft_stroke_border_close( right );
ft_stroke_border_close( right, 0 );
}
else
{
@ -1506,11 +1553,9 @@
goto Exit;
}
ft_stroke_border_reverse( stroker->borders+0 );
/* then end our two subpaths */
ft_stroke_border_close( stroker->borders + 0 );
ft_stroke_border_close( stroker->borders + 1 );
ft_stroke_border_close( stroker->borders + 0, 1 );
ft_stroke_border_close( stroker->borders + 1, 0 );
}
Exit: