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Is it the change to stop always keeping the first feature in each tile?

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This commit is contained in:
Erica Fischer
2024-02-15 10:13:59 -08:00
parent 6c5f6a58f3
commit 4253f4d7aa
43 changed files with 24503 additions and 3755 deletions
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tile.cpp
+6 -12
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@@ -1163,22 +1163,16 @@ static serial_feature next_feature(decompressor *geoms, std::atomic<long long> *
std::string &layername = (*layer_unmaps)[sf.segment][sf.layer];
auto count = multiplier_state->count.find(layername);
if (count == multiplier_state->count.end()) {
multiplier_state->count.emplace(layername, 0);
count = multiplier_state->count.find(layername);
sf.dropped = FEATURE_KEPT; // the first feature in each tile is always kept
}
if (z >= sf.feature_minzoom) {
if (count == multiplier_state->count.end()) {
multiplier_state->count.emplace(layername, 0);
count = multiplier_state->count.find(layername);
}
if (z >= sf.feature_minzoom || sf.dropped == FEATURE_KEPT) {
count->second = 0;
sf.dropped = FEATURE_KEPT; // feature is kept
} else if (count->second + 1 < retain_points_multiplier) {
if (count == multiplier_state->count.end()) {
// just drop features until we reach one that is
// supposed to appear in this zoom level
continue;
}
count->second++;
sf.dropped = count->second;
} else {