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[autofit] Update and improve segment and edge tracing.

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* src/autofit/afhints.c (af_glyph_hints_dump_segments): Trace
`delta' also.
Don't show first point of segment as a replacement for `pos'; this
is (a) misleading, since the difference to `pos' can be almost
arbitrarily large in corner cases, and (b) it is better to have all
segment data in font units instead of a single value given in output
space coordinates.
Improve layout.
(af_glyph_hints_dump_edges): Show px->units and units->px conversion
values for convenience.
Improve layout.
This commit is contained in:
Werner Lemberg 2016-07-15 10:35:32 +02:00
parent 894c0228ca
commit 1831e6f068
2 changed files with 36 additions and 13 deletions
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16
ChangeLog
View File

@ -1,3 +1,19 @@
2016-07-15 Werner Lemberg <wl@gnu.org>
[autofit] Update and improve segment and edge tracing.
* src/autofit/afhints.c (af_glyph_hints_dump_segments): Trace
`delta' also.
Don't show first point of segment as a replacement for `pos'; this
is (a) misleading, since the difference to `pos' can be almost
arbitrarily large in corner cases, and (b) it is better to have all
segment data in font units instead of a single value given in output
space coordinates.
Improve layout.
(af_glyph_hints_dump_edges): Show px->units and units->px conversion
values for convenience.
Improve layout.
2016-07-15 Werner Lemberg <wl@gnu.org>
[autofit] For edges, reject segments wider than 1px (#41334).

33
src/autofit/afhints.c
View File

@ -420,20 +420,19 @@
dimension == AF_DIMENSION_HORZ ? "vertical"
: "horizontal" ));
if ( axis->num_segments )
AF_DUMP(( " index pos dir from to"
" link serif edge"
AF_DUMP(( " index pos delta dir from to "
" link serif edge"
" height extra flags\n" ));
else
AF_DUMP(( " (none)\n" ));
for ( seg = segments; seg < limit; seg++ )
AF_DUMP(( " %5d %5.2g %5s %4d %4d"
AF_DUMP(( " %5d %5d %5d %5s %4d %4d"
" %4s %5s %4s"
" %6d %5d %11s\n",
AF_INDEX_NUM( seg, segments ),
dimension == AF_DIMENSION_HORZ
? (int)seg->first->ox / 64.0
: (int)seg->first->oy / 64.0,
seg->pos,
seg->delta,
af_dir_str( (AF_Direction)seg->dir ),
AF_INDEX_NUM( seg->first, points ),
AF_INDEX_NUM( seg->last, points ),
@ -553,18 +552,26 @@
* note: AF_DIMENSION_HORZ corresponds to _vertical_ edges
* since they have a constant X coordinate.
*/
AF_DUMP(( "Table of %s edges:\n",
dimension == AF_DIMENSION_HORZ ? "vertical"
: "horizontal" ));
if ( dimension == AF_DIMENSION_HORZ )
AF_DUMP(( "Table of %s edges (1px=%.2fu, 10u=%.2fpx):\n",
"vertical",
65536.0 * 64.0 / hints->x_scale,
10.0 * hints->x_scale / 65536.0 / 64.0 ));
else
AF_DUMP(( "Table of %s edges (1px=%.2fu, 10u=%.2fpx):\n",
"horizontal",
65536.0 * 64.0 / hints->y_scale,
10.0 * hints->y_scale / 65536.0 / 64.0 ));
if ( axis->num_edges )
AF_DUMP(( " index pos dir link serif"
" blue opos pos flags\n" ));
AF_DUMP(( " index pos dir link serif"
" blue opos pos flags\n" ));
else
AF_DUMP(( " (none)\n" ));
for ( edge = edges; edge < limit; edge++ )
AF_DUMP(( " %5d %5.2g %5s %4s %5s"
" %c %5.2f %5.2f %11s\n",
AF_DUMP(( " %5d %7.2f %5s %4s %5s"
" %c %7.2f %7.2f %11s\n",
AF_INDEX_NUM( edge, edges ),
(int)edge->opos / 64.0,
af_dir_str( (AF_Direction)edge->dir ),