forked from minhngoc25a/freetype2
* src/pshinter/pshalgo3.c (psh3_glyph_compute_inflections,
psh3_glyph_compute_extrema, psh3_hint_table_find_strong_point): Fix compiler warnings and resolve shadowing of local variables.
This commit is contained in:
Werner Lemberg
parent
0ca0d9773e
commit
b6cdf566df
44
ChangeLog
44
ChangeLog
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@ -1,3 +1,9 @@
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2002-08-21 Werner Lemberg <wl@gnu.org>
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* src/pshinter/pshalgo3.c (psh3_glyph_compute_inflections,
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psh3_glyph_compute_extrema, psh3_hint_table_find_strong_point): Fix
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compiler warnings and resolve shadowing of local variables.
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2002-08-21 David Turner <david@freetype.org>
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* src/pshinter/pshalgo3.c, src/autohint/ahangles.c,
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@ -32,11 +38,41 @@
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src/autohint/ahmodule.c [DEBUG_HINTER]: Removing compiler warnings
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(only used in development builds anyway).
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* src/pshinter/pshalgo3.h, src/pshinter/pshalgo3.c: Removing
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compiler warnings, and improving the support of local extrema
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and stem edge points.
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Improve support of local extrema and stem edge points.
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* src/pshinter/pshalgo3.h (PSH3_Hint_TableRec): Use PSH3_ZoneRec
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for `zones'.
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(PSH3_DIR_UP, PSH3_DIR_DOWN): Exchange values.
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(PSH3_DIR_HORIZONTAL, PSH3_DIR_VERTICAL): New macros.
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(PSH3_DIR_COMPARE, PSH3_DIR_IS_HORIZONTAL, PSH3_IS_VERTICAL): New
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macros.
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(PSH3_POINT_INFLEX): New enum.
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(psh3_point_{is,set}_{off,inflex}): New macros.
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(PSH3_POINT_{EXTREMUM,POSITIVE,NEGATIVE,EDGE_MIN,EDGE_MAX): New
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enum values.
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(psh3_point_{is,set}_{extremum,positive,negative,edge_min,edge_max}):
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New macros.
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(PSH3_PointRec): New members `flags2' and `org_v'.
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(PSH3_POINT_EQUAL_ARG, PSH3_POINT_ANGLE): New macros.
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* src/pshinter/pshalgo3.c [DEBUG_HINTER]: Removing compiler
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warnings.
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(COMPUTE_INFLEXS): New macro.
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(psh3_hint_align): Simplify some basic arithmetic computations.
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(psh3_point_is_extremum): Removed.
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(psh3_glyph_compute_inflections) [COMPUTE_INFLEXS]: New function.
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(psh3_glyph_init) [COMPUTE_INFLEXS]: Use it.
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(psh3_glyph_compute_extrema): New function.
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(PSH3_STRONG_THRESHOLD): Increased to 30.
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(psh3_hint_table_find_strong_point): Improved.
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(psh3_glyph_find_strong_points,
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psh3_glyph_interpolate_strong_points): Updated.
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(psh3_hints_apply): Use psh3_glyph_compute_extrema.
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* test/gview.c (draw_ps3_hint, ps3_draw_control_points): New
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functions.
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Other small updates.
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* test/gview.c: Small updates to the hinting debugger.
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* Jamfile: Small updates.
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2002-08-18 Arkadiusz Miskiewicz <misiek@pld.ORG.PL>
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@ -665,12 +665,14 @@
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/*************************************************************************/
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#ifdef COMPUTE_INFLEXS
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/* compute all inflex points in a given glyph */
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/* compute all inflex points in a given glyph */
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static void
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psh3_glyph_compute_inflections( PSH3_Glyph glyph )
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{
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FT_UInt n;
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for ( n = 0; n < glyph->num_contours; n++ )
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{
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PSH3_Point first, start, end, before, after;
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@ -678,12 +680,13 @@
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FT_Angle diff_in, diff_out;
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FT_Int finished = 0;
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/* we need at least 4 points to create an inflection point */
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if ( glyph->contours[n].count < 4 )
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continue;
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/* compute first segment in contour */
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first = glyph->contours[n].start;
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first = glyph->contours[n].start;
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start = end = first;
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do
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@ -691,8 +694,8 @@
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end = end->next;
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if ( end == first )
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goto Skip;
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}
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while ( PSH3_POINT_EQUAL_ORG( end, first ) );
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} while ( PSH3_POINT_EQUAL_ORG( end, first ) );
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angle_seg = PSH3_POINT_ANGLE( start, end );
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@ -706,12 +709,12 @@
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before = before->prev;
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if ( before == first )
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goto Skip;
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}
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while ( PSH3_POINT_EQUAL_ORG( before, start ) );
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} while ( PSH3_POINT_EQUAL_ORG( before, start ) );
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angle_in = PSH3_POINT_ANGLE( before, start );
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}
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while ( angle_in == angle_seg );
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} while ( angle_in == angle_seg );
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first = start;
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diff_in = FT_Angle_Diff( angle_in, angle_seg );
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@ -729,12 +732,12 @@
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after = after->next;
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if ( after == first )
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finished = 1;
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}
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while ( PSH3_POINT_EQUAL_ORG( end, after ) );
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} while ( PSH3_POINT_EQUAL_ORG( end, after ) );
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angle_out = PSH3_POINT_ANGLE( end, after );
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}
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while ( angle_out == angle_seg );
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} while ( angle_out == angle_seg );
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diff_out = FT_Angle_Diff( angle_seg, angle_out );
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@ -757,15 +760,17 @@
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end = after;
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angle_seg = angle_out;
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diff_in = diff_out;
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}
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while ( !finished );
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} while ( !finished );
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Skip:
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;
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}
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}
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#endif /* COMPUTE_INFLEXS */
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static void
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psh3_glyph_done( PSH3_Glyph glyph )
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{
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@ -1037,13 +1042,12 @@
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}
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/* compute all extrema in a glyph for a given dimension */
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/* compute all extrema in a glyph for a given dimension */
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static void
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psh3_glyph_compute_extrema( PSH3_Glyph glyph )
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{
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FT_UInt n;
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FT_UInt n;
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/* first of all, compute all local extrema */
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for ( n = 0; n < glyph->num_contours; n++ )
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@ -1051,6 +1055,7 @@
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PSH3_Point first = glyph->contours[n].start;
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PSH3_Point point, before, after;
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point = first;
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before = point;
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after = point;
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@ -1073,8 +1078,8 @@
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after = after->next;
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if ( after == first )
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goto Next;
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}
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while ( after->org_u == point->org_u );
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} while ( after->org_u == point->org_u );
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if ( before->org_u < point->org_u )
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{
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@ -1094,8 +1099,8 @@
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{
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psh3_point_set_extremum( point );
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point = point->next;
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}
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while ( point != after );
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} while ( point != after );
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}
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}
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@ -1108,16 +1113,17 @@
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;
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}
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/* for each extrema, determine its direction along the */
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/* orthogonal axis */
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/* for each extrema, determine its direction along the */
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/* orthogonal axis */
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for ( n = 0; n < glyph->num_points; n++ )
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{
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PSH3_Point point, before, after;
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point = &glyph->points[n];
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before = point;
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after = point;
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if ( psh3_point_is_extremum( point ) )
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{
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do
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@ -1125,16 +1131,16 @@
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before = before->prev;
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if ( before == point )
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goto Skip;
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}
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while ( before->org_v == point->org_v );
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} while ( before->org_v == point->org_v );
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do
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{
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after = after->next;
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if ( after == point )
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goto Skip;
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}
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while ( after->org_v == point->org_v );
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} while ( after->org_v == point->org_v );
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}
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if ( before->org_v < point->org_v &&
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@ -1147,29 +1153,29 @@
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{
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psh3_point_set_negative( point );
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}
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Skip:
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;
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}
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}
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#define PSH3_STRONG_THRESHOLD 30
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/* major_dir is the direction for points on the bottom/left of the stem;
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* Points on the top/right of the stem will have a direction of
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* -major_dir.
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*/
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/* major_dir is the direction for points on the bottom/left of the stem; */
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/* Points on the top/right of the stem will have a direction of */
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/* -major_dir. */
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static void
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psh3_hint_table_find_strong_point( PSH3_Hint_Table table,
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PSH3_Point point,
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FT_Int major_dir )
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{
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PSH3_Hint* sort = table->sort;
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FT_UInt num_hints = table->num_hints;
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FT_Int point_dir = 0;
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PSH3_Hint* sort = table->sort;
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FT_UInt num_hints = table->num_hints;
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FT_Int point_dir = 0;
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if ( PSH3_DIR_COMPARE( point->dir_in, major_dir ) )
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point_dir = point->dir_in;
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@ -1181,15 +1187,18 @@
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{
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FT_UInt flag;
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for ( ; num_hints > 0; num_hints--, sort++ )
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{
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PSH3_Hint hint = sort[0];
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FT_Pos d;
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if ( point_dir == major_dir )
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{
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flag = PSH3_POINT_EDGE_MIN;
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d = point->org_u - hint->org_pos;
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if ( ABS( d ) < PSH3_STRONG_THRESHOLD )
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{
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Is_Strong:
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@ -1203,17 +1212,20 @@
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{
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flag = PSH3_POINT_EDGE_MAX;
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d = point->org_u - hint->org_pos - hint->org_len;
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if ( ABS( d ) < PSH3_STRONG_THRESHOLD )
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goto Is_Strong;
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}
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}
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}
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#if 1
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else if ( psh3_point_is_extremum( point ) )
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{
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/* treat extrema as special cases for stem edge alignment */
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FT_UInt min_flag, max_flag;
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if ( major_dir == PSH3_DIR_HORIZONTAL )
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{
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min_flag = PSH3_POINT_POSITIVE;
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@ -1230,10 +1242,12 @@
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PSH3_Hint hint = sort[0];
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FT_Pos d, flag;
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if ( point->flags2 & min_flag )
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{
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flag = PSH3_POINT_EDGE_MIN;
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d = point->org_u - hint->org_pos;
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if ( ABS( d ) < PSH3_STRONG_THRESHOLD )
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{
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Is_Strong2:
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@ -1247,6 +1261,7 @@
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{
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flag = PSH3_POINT_EDGE_MAX;
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d = point->org_u - hint->org_pos - hint->org_len;
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if ( ABS( d ) < PSH3_STRONG_THRESHOLD )
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goto Is_Strong2;
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}
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@ -1258,7 +1273,8 @@
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}
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}
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}
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#endif
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#endif /* 1 */
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}
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@ -1358,6 +1374,7 @@
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{
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FT_Pos delta;
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if ( psh3_point_is_edge_min( point ) )
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{
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point->cur_u = hint->cur_pos;
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@ -1375,11 +1392,12 @@
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else if ( delta >= hint->org_len )
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point->cur_u = hint->cur_pos + hint->cur_len +
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FT_MulFix( delta - hint->org_len, scale );
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FT_MulFix( delta - hint->org_len, scale );
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else if ( hint->org_len > 0 )
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point->cur_u = hint->cur_pos +
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FT_MulDiv( delta, hint->cur_len, hint->org_len );
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FT_MulDiv( delta, hint->cur_len,
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hint->org_len );
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else
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point->cur_u = hint->cur_pos;
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}
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@ -28,10 +28,10 @@
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FT_BEGIN_HEADER
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/* handle to Hint structure */
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/* handle to Hint structure */
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typedef struct PSH3_HintRec_* PSH3_Hint;
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/* hint bit-flags */
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/* hint bit-flags */
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typedef enum
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{
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PSH3_HINT_GHOST = PS_HINT_FLAG_GHOST,
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@ -50,7 +50,7 @@ FT_BEGIN_HEADER
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#define psh3_hint_deactivate( x ) (x)->flags &= ~PSH3_HINT_ACTIVE
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#define psh3_hint_set_fitted( x ) (x)->flags |= PSH3_HINT_FITTED
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/* hint structure */
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/* hint structure */
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typedef struct PSH3_HintRec_
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{
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FT_Int org_pos;
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@ -105,12 +105,12 @@ FT_BEGIN_HEADER
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PSH3_DIR_RIGHT = 2
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};
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#define PSH3_DIR_HORIZONTAL 2
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#define PSH3_DIR_VERTICAL 1
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#define PSH3_DIR_HORIZONTAL 2
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#define PSH3_DIR_VERTICAL 1
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#define PSH3_DIR_COMPARE(d1,d2) ( (d1) == (d2) || (d1) == -(d2) )
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#define PSH3_DIR_IS_HORIZONTAL(d) PSH3_DIR_COMPARE(d,PSH3_DIR_HORIZONTAL)
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#define PSH3_DIR_IS_VERTICAL(d) PSH3_DIR_COMPARE(d,PSH3_DIR_VERTICAL)
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#define PSH3_DIR_COMPARE( d1, d2 ) ( (d1) == (d2) || (d1) == -(d2) )
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#define PSH3_DIR_IS_HORIZONTAL( d ) PSH3_DIR_COMPARE( d, PSH3_DIR_HORIZONTAL )
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#define PSH3_DIR_IS_VERTICAL( d ) PSH3_DIR_COMPARE( d, PSH3_DIR_VERTICAL )
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|
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/* the following bit-flags are computed once by the glyph */
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|
|
@ -122,33 +122,33 @@ FT_BEGIN_HEADER
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PSH3_POINT_INFLEX = 4 /* point is inflection */
|
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};
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#define psh3_point_is_smooth( p ) ( (p)->flags & PSH3_POINT_SMOOTH )
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#define psh3_point_is_off( p ) ( (p)->flags & PSH3_POINT_OFF )
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#define psh3_point_is_inflection( p ) ( (p)->flags & PSH3_POINT_INFLEX )
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#define psh3_point_is_smooth( p ) ( (p)->flags & PSH3_POINT_SMOOTH )
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#define psh3_point_is_off( p ) ( (p)->flags & PSH3_POINT_OFF )
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#define psh3_point_is_inflex( p ) ( (p)->flags & PSH3_POINT_INFLEX )
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#define psh3_point_set_smooth( p ) (p)->flags |= PSH3_POINT_SMOOTH
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#define psh3_point_set_off( p ) (p)->flags |= PSH3_POINT_OFF
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#define psh3_point_set_inflex( p ) (p)->flags |= PSH3_POINT_INFLEX
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#define psh3_point_set_smooth( p ) (p)->flags |= PSH3_POINT_SMOOTH
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#define psh3_point_set_off( p ) (p)->flags |= PSH3_POINT_OFF
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#define psh3_point_set_inflex( p ) (p)->flags |= PSH3_POINT_INFLEX
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|
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/* the following bit-flags are re-computed for each dimension */
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/* the following bit-flags are re-computed for each dimension */
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enum
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{
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PSH3_POINT_STRONG = 16, /* point is strong */
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PSH3_POINT_FITTED = 32, /* point is already fitted */
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PSH3_POINT_EXTREMUM = 64, /* point is local extremum */
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PSH3_POINT_POSITIVE = 128, /* extremum has positive contour flow */
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PSH3_POINT_NEGATIVE = 256, /* extremum has negative contour flow */
|
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PSH3_POINT_EDGE_MIN = 512, /* point is aligned to left/bottom stem edge */
|
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PSH3_POINT_EDGE_MAX = 1024 /* point is aligned to top/right stem edge */
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PSH3_POINT_STRONG = 16, /* point is strong */
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PSH3_POINT_FITTED = 32, /* point is already fitted */
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PSH3_POINT_EXTREMUM = 64, /* point is local extremum */
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PSH3_POINT_POSITIVE = 128, /* extremum has positive contour flow */
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PSH3_POINT_NEGATIVE = 256, /* extremum has negative contour flow */
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PSH3_POINT_EDGE_MIN = 512, /* point is aligned to left/bottom stem edge */
|
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PSH3_POINT_EDGE_MAX = 1024 /* point is aligned to top/right stem edge */
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};
|
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#define psh3_point_is_strong( p ) ( (p)->flags2 & PSH3_POINT_STRONG )
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#define psh3_point_is_fitted( p ) ( (p)->flags2 & PSH3_POINT_FITTED )
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#define psh3_point_is_extremum( p ) ( (p)->flags2 & PSH3_POINT_EXTREMUM )
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#define psh3_point_is_positive( p ) ( (p)->flags2 & PSH3_POINT_POSITIVE )
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#define psh3_point_is_negative( p ) ( (p)->flags2 & PSH3_POINT_NEGATIVE )
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#define psh3_point_is_edge_min( p ) ( (p)->flags2 & PSH3_POINT_EDGE_MIN )
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#define psh3_point_is_edge_max( p ) ( (p)->flags2 & PSH3_POINT_EDGE_MAX )
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#define psh3_point_is_strong( p ) ( (p)->flags2 & PSH3_POINT_STRONG )
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#define psh3_point_is_fitted( p ) ( (p)->flags2 & PSH3_POINT_FITTED )
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#define psh3_point_is_extremum( p ) ( (p)->flags2 & PSH3_POINT_EXTREMUM )
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#define psh3_point_is_positive( p ) ( (p)->flags2 & PSH3_POINT_POSITIVE )
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#define psh3_point_is_negative( p ) ( (p)->flags2 & PSH3_POINT_NEGATIVE )
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#define psh3_point_is_edge_min( p ) ( (p)->flags2 & PSH3_POINT_EDGE_MIN )
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#define psh3_point_is_edge_max( p ) ( (p)->flags2 & PSH3_POINT_EDGE_MAX )
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#define psh3_point_set_strong( p ) (p)->flags2 |= PSH3_POINT_STRONG
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#define psh3_point_set_fitted( p ) (p)->flags2 |= PSH3_POINT_FITTED
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|
@ -186,11 +186,11 @@ FT_BEGIN_HEADER
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} PSH3_PointRec;
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#define PSH3_POINT_EQUAL_ORG(a,b) ( (a)->org_u == (b)->org_u && \
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(a)->org_v == (b)->org_v )
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#define PSH3_POINT_EQUAL_ORG( a, b ) ( (a)->org_u == (b)->org_u && \
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(a)->org_v == (b)->org_v )
|
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|
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#define PSH3_POINT_ANGLE(a,b) FT_Atan2( (b)->org_u - (a)->org_u, \
|
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(b)->org_v - (a)->org_v )
|
||||
#define PSH3_POINT_ANGLE( a, b ) FT_Atan2( (b)->org_u - (a)->org_u, \
|
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(b)->org_v - (a)->org_v )
|
||||
|
||||
typedef struct PSH3_ContourRec_
|
||||
{
|
||||
|
|
|
|||
Loading…
Reference in New Issue