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[gvar] Optimize IUP alg

This commit is contained in:
Behdad Esfahbod 2022-11-22 10:41:37 -07:00
parent ee9873b5ed
commit 72059a4789
1 changed files with 10 additions and 10 deletions
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20
src/hb-ot-var-gvar-table.hh
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@ -526,11 +526,11 @@ struct gvar
unsigned int target, unsigned int prev, unsigned int next,
float contour_point_t::*m)
{
float target_val = points[target].*m;
float prev_val = points[prev].*m;
float next_val = points[next].*m;
float prev_delta = deltas[prev].*m;
float next_delta = deltas[next].*m;
float target_val = points.arrayZ[target].*m;
float prev_val = points.arrayZ[prev].*m;
float next_val = points.arrayZ[next].*m;
float prev_delta = deltas.arrayZ[prev].*m;
float next_delta = deltas.arrayZ[next].*m;
if (prev_val == next_val)
return (prev_delta == next_delta) ? prev_delta : 0.f;
@ -574,7 +574,7 @@ struct gvar
hb_vector_t<unsigned> end_points;
for (unsigned i = 0; i < points.length; ++i)
if (points[i].is_end_point)
if (points.arrayZ[i].is_end_point)
end_points.push (i);
auto coords = hb_array (font->coords, font->num_coords);
@ -644,14 +644,14 @@ struct gvar
{
i = j;
j = next_index (i, start_point, end_point);
if (deltas[i].flag && !deltas[j].flag) break;
if (deltas.arrayZ[i].flag && !deltas.arrayZ[j].flag) break;
}
prev = j = i;
for (;;)
{
i = j;
j = next_index (i, start_point, end_point);
if (!deltas[i].flag && deltas[j].flag) break;
if (!deltas.arrayZ[i].flag && deltas.arrayZ[j].flag) break;
}
next = j;
/* Infer deltas for all unref points in the gap between prev and next */
@ -660,8 +660,8 @@ struct gvar
{
i = next_index (i, start_point, end_point);
if (i == next) break;
deltas[i].x = infer_delta (orig_points.as_array (), deltas.as_array (), i, prev, next, &contour_point_t::x);
deltas[i].y = infer_delta (orig_points.as_array (), deltas.as_array (), i, prev, next, &contour_point_t::y);
deltas.arrayZ[i].x = infer_delta (orig_points.as_array (), deltas.as_array (), i, prev, next, &contour_point_t::x);
deltas.arrayZ[i].y = infer_delta (orig_points.as_array (), deltas.as_array (), i, prev, next, &contour_point_t::y);
if (--unref_count == 0) goto no_more_gaps;
}
}