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Multiply error by the interval to avoid repeated division

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Erica Fischer
2023-07-17 16:29:50 -07:00
parent b3e02b7572
commit 5d76df2b89
1 changed files with 3 additions and 3 deletions
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drop.cpp
+3 -3
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@@ -13,7 +13,7 @@ int calc_feature_minzoom(struct index *ix, struct drop_state ds[], int maxzoom,
(additional[A_POLYGON_DROP] && ix->t == VT_POLYGON))) {
for (ssize_t i = 0; i <= maxzoom; i++) {
// This zoom level is now lighter on features than it should be.
ds[i].error -= 1.0 / ds[i].interval;
ds[i].error -= 1.0;
// printf("z%zd: error %f with interval %f\n", i, ds[i].error, ds[i].interval);
}
@@ -28,7 +28,7 @@ int calc_feature_minzoom(struct index *ix, struct drop_state ds[], int maxzoom,
// is now one feature heavier than before.
for (ssize_t j = i; j <= maxzoom; j++) {
ds[j].previndex = ix->ix;
ds[j].error += ds[j].interval / ds[j].interval;
ds[j].error += ds[j].interval;
// printf("z%zd: now error %f\n", j, ds[j].error);
}
@@ -52,7 +52,7 @@ int calc_feature_minzoom(struct index *ix, struct drop_state ds[], int maxzoom,
// is now one feature heavier than before.
for (ssize_t j = i; j < chosen; j++) {
ds[j].previndex = ix->ix;
ds[j].error += ds[j].interval / ds[j].interval;
ds[j].error += ds[j].interval;
}
break;