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[truetype, type1] Revise the use of FT_MulDiv. 

* src/truetype/ttgxvar.c: Updated.
* src/truetype/ttobjs.c: Updated.
* src/type1/t1load.c: Updated.
This commit is contained in:
Alexei Podtelezhnikov 2012-12-01 23:36:02 -05:00
parent 74e6a1f26f
commit 4ae9cbb025
4 changed files with 32 additions and 56 deletions
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8
ChangeLog
View File

@ -1,3 +1,11 @@
2012-12-01 Alexei Podtelezhnikov <apodtele@gmail.com>
[truetype, type1] Revise the use of FT_MulDiv.
* src/truetype/ttgxvar.c: Updated.
* src/truetype/ttobjs.c: Updated.
* src/type1/t1load.c: Updated.
2012-11-30 Werner Lemberg <wl@gnu.org>
[configure] Preserve customized `ftoption.h'.

55
src/truetype/ttgxvar.c
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@ -4,7 +4,7 @@
/* */
/* TrueType GX Font Variation loader */
/* */
/* Copyright 2004-2011 by */
/* Copyright 2004-2012 by */
/* David Turner, Robert Wilhelm, Werner Lemberg, and George Williams. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@ -501,11 +501,9 @@
FT_Fixed* im_end_coords )
{
FT_UInt i;
FT_Fixed apply;
FT_Fixed temp;
FT_Fixed apply = 0x10000L;
apply = 0x10000L;
for ( i = 0; i < blend->num_axis; ++i )
{
if ( tuple_coords[i] == 0 )
@ -525,11 +523,10 @@
else if ( !( tupleIndex & GX_TI_INTERMEDIATE_TUPLE ) )
/* not an intermediate tuple */
apply = FT_MulDiv( apply,
apply = FT_MulFix( apply,
blend->normalizedcoords[i] > 0
? blend->normalizedcoords[i]
: -blend->normalizedcoords[i],
0x10000L );
: -blend->normalizedcoords[i] );
else if ( blend->normalizedcoords[i] <= im_start_coords[i] ||
blend->normalizedcoords[i] >= im_end_coords[i] )
@ -539,20 +536,14 @@
}
else if ( blend->normalizedcoords[i] < tuple_coords[i] )
{
temp = FT_MulDiv( blend->normalizedcoords[i] - im_start_coords[i],
0x10000L,
tuple_coords[i] - im_start_coords[i]);
apply = FT_MulDiv( apply, temp, 0x10000L );
}
apply = FT_MulDiv( apply,
blend->normalizedcoords[i] - im_start_coords[i],
tuple_coords[i] - im_start_coords[i] );
else
{
temp = FT_MulDiv( im_end_coords[i] - blend->normalizedcoords[i],
0x10000L,
im_end_coords[i] - tuple_coords[i] );
apply = FT_MulDiv( apply, temp, 0x10000L );
}
apply = FT_MulDiv( apply,
im_end_coords[i] - blend->normalizedcoords[i],
im_end_coords[i] - tuple_coords[i] );
}
return apply;
@ -1034,19 +1025,11 @@
}
if ( coords[i] < a->def )
{
normalized[i] = -FT_MulDiv( coords[i] - a->def,
0x10000L,
a->minimum - a->def );
}
normalized[i] = -FT_DivFix( coords[i] - a->def, a->minimum - a->def );
else if ( a->maximum == a->def )
normalized[i] = 0;
else
{
normalized[i] = FT_MulDiv( coords[i] - a->def,
0x10000L,
a->maximum - a->def );
}
normalized[i] = FT_DivFix( coords[i] - a->def, a->maximum - a->def );
}
if ( !blend->avar_checked )
@ -1061,15 +1044,11 @@
if ( normalized[i] < av->correspondence[j].fromCoord )
{
normalized[i] =
FT_MulDiv(
FT_MulDiv(
normalized[i] - av->correspondence[j - 1].fromCoord,
0x10000L,
av->correspondence[j].fromCoord -
av->correspondence[j - 1].fromCoord ),
av->correspondence[j].toCoord -
av->correspondence[j - 1].toCoord,
0x10000L ) +
FT_MulDiv( normalized[i] - av->correspondence[j - 1].fromCoord,
av->correspondence[j].toCoord -
av->correspondence[j - 1].toCoord,
av->correspondence[j].fromCoord -
av->correspondence[j - 1].fromCoord ) +
av->correspondence[j - 1].toCoord;
break;
}

10
src/truetype/ttobjs.c
View File

@ -4,7 +4,7 @@
/* */
/* Objects manager (body). */
/* */
/* Copyright 1996-2011 */
/* Copyright 1996-2012 */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@ -1190,17 +1190,13 @@
size->ttmetrics.scale = metrics->x_scale;
size->ttmetrics.ppem = metrics->x_ppem;
size->ttmetrics.x_ratio = 0x10000L;
size->ttmetrics.y_ratio = FT_MulDiv( metrics->y_ppem,
0x10000L,
metrics->x_ppem );
size->ttmetrics.y_ratio = FT_DivFix( metrics->y_ppem, metrics->x_ppem );
}
else
{
size->ttmetrics.scale = metrics->y_scale;
size->ttmetrics.ppem = metrics->y_ppem;
size->ttmetrics.x_ratio = FT_MulDiv( metrics->x_ppem,
0x10000L,
metrics->y_ppem );
size->ttmetrics.x_ratio = FT_DivFix( metrics->x_ppem, metrics->y_ppem );
size->ttmetrics.y_ratio = 0x10000L;
}

15
src/type1/t1load.c
View File

@ -239,18 +239,11 @@
for ( j = 1; j < axismap->num_points; ++j )
{
if ( ncv <= axismap->blend_points[j] )
{
FT_Fixed t = FT_MulDiv( ncv - axismap->blend_points[j - 1],
0x10000L,
axismap->blend_points[j] -
axismap->blend_points[j - 1] );
return INT_TO_FIXED( axismap->design_points[j - 1] ) +
FT_MulDiv( t,
axismap->design_points[j] -
axismap->design_points[j - 1],
1L );
}
( axismap->design_points[j] - axismap->design_points[j - 1] ) *
FT_DivFix( ncv - axismap->blend_points[j - 1],
axismap->blend_points[j] -
axismap->blend_points[j - 1] );
}
return INT_TO_FIXED( axismap->design_points[axismap->num_points - 1] );