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[truetype] Another fix for non-intermediate GX tuples. 

* src/truetype/ttgxvar.c (ft_var_apply_tuple): Add some missing
cases.
This commit is contained in:
Behdad Esfahbod 2016-04-16 07:32:23 +02:00 committed by Werner Lemberg
parent 213f0ca3e3
commit 99eff67824
2 changed files with 61 additions and 36 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2016-04-16 Behdad Esfahbod <behdad@behdad.org>
[truetype] Another fix for non-intermediate GX tuples.
* src/truetype/ttgxvar.c (ft_var_apply_tuple): Add some missing
cases.
2016-04-12 Alexei Podtelezhnikov <apodtele@gmail.com>
Remove forgotten macro.

90
src/truetype/ttgxvar.c
View File

@ -613,6 +613,11 @@
{
FT_TRACE6(( " axis coordinate %d (%.4f):\n",
i, blend->normalizedcoords[i] / 65536.0 ));
if ( !( tupleIndex & GX_TI_INTERMEDIATE_TUPLE ) )
FT_TRACE6(( " intermediate coordinates %d (%.4f, %.4f):\n",
i,
im_start_coords[i] / 65536.0,
im_end_coords[i] / 65536.0 ));
/* It's not clear why (for intermediate tuples) we don't need */
/* to check against start/end -- the documentation says we don't. */
@ -625,61 +630,74 @@
continue;
}
else if ( blend->normalizedcoords[i] == 0 )
if ( blend->normalizedcoords[i] == 0 )
{
FT_TRACE6(( " axis coordinate is zero, stop\n" ));
apply = 0;
break;
}
else if ( ( blend->normalizedcoords[i] < FT_MIN( 0, tuple_coords[i] ) ) ||
( blend->normalizedcoords[i] > FT_MAX( 0, tuple_coords[i] ) ) )
if ( blend->normalizedcoords[i] == tuple_coords[i] )
{
FT_TRACE6(( " tuple coordinate value %.4f is exceeded, stop\n",
FT_TRACE6(( " tuple coordinate value %.4f fits perfectly\n",
tuple_coords[i] / 65536.0 ));
apply = 0;
break;
/* `apply' does not change */
continue;
}
else if ( !( tupleIndex & GX_TI_INTERMEDIATE_TUPLE ) )
if ( !( tupleIndex & GX_TI_INTERMEDIATE_TUPLE ) )
{
/* not an intermediate tuple */
if ( blend->normalizedcoords[i] < FT_MIN( 0, tuple_coords[i] ) ||
blend->normalizedcoords[i] > FT_MAX( 0, tuple_coords[i] ) )
{
FT_TRACE6(( " tuple coordinate value %.4f is exceeded, stop\n",
tuple_coords[i] / 65536.0 ));
apply = 0;
break;
}
FT_TRACE6(( " tuple coordinate value %.4f fits\n",
tuple_coords[i] / 65536.0 ));
/* not an intermediate tuple */
apply = FT_MulDiv( apply,
blend->normalizedcoords[i],
tuple_coords[i] );
}
else if ( blend->normalizedcoords[i] < im_start_coords[i] ||
blend->normalizedcoords[i] > im_end_coords[i] )
{
FT_TRACE6(( " intermediate tuple range [%.4f;%.4f] is exceeded,"
" stop\n",
im_start_coords[i] / 65536.0,
im_end_coords[i] / 65536.0 ));
apply = 0;
break;
}
else if ( blend->normalizedcoords[i] < tuple_coords[i] )
{
FT_TRACE6(( " intermediate tuple range [%.4f;%.4f] fits\n",
im_start_coords[i] / 65536.0,
im_end_coords[i] / 65536.0 ));
apply = FT_MulDiv( apply,
blend->normalizedcoords[i] - im_start_coords[i],
tuple_coords[i] - im_start_coords[i] );
}
else
{
FT_TRACE6(( " intermediate tuple range [%.4f;%.4f] fits\n",
im_start_coords[i] / 65536.0,
im_end_coords[i] / 65536.0 ));
apply = FT_MulDiv( apply,
im_end_coords[i] - blend->normalizedcoords[i],
im_end_coords[i] - tuple_coords[i] );
/* intermediate tuple */
if ( blend->normalizedcoords[i] < im_start_coords[i] ||
blend->normalizedcoords[i] > im_end_coords[i] )
{
FT_TRACE6(( " intermediate tuple range [%.4f;%.4f] is exceeded,"
" stop\n",
im_start_coords[i] / 65536.0,
im_end_coords[i] / 65536.0 ));
apply = 0;
break;
}
else if ( blend->normalizedcoords[i] < tuple_coords[i] )
{
FT_TRACE6(( " intermediate tuple range [%.4f;%.4f] fits\n",
im_start_coords[i] / 65536.0,
im_end_coords[i] / 65536.0 ));
apply = FT_MulDiv( apply,
blend->normalizedcoords[i] - im_start_coords[i],
tuple_coords[i] - im_start_coords[i] );
}
else
{
FT_TRACE6(( " intermediate tuple range [%.4f;%.4f] fits\n",
im_start_coords[i] / 65536.0,
im_end_coords[i] / 65536.0 ));
apply = FT_MulDiv( apply,
im_end_coords[i] - blend->normalizedcoords[i],
im_end_coords[i] - tuple_coords[i] );
}
}
}