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Add an option to extend zooms if still dropping, but with a limit

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This commit is contained in:
Erica Fischer
2023-08-17 12:44:14 -07:00
parent 2b133a1def
commit 989cd76403
6 changed files with 420 additions and 4 deletions
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tile.cpp
+9 -4
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@@ -332,7 +332,7 @@ struct ordercmp {
} ordercmp;
void rewrite(drawvec &geom, int z, int nextzoom, int maxzoom, long long *bbox, unsigned tx, unsigned ty, int buffer, int *within, std::atomic<long long> *geompos, compressor **geomfile, const char *fname, signed char t, int layer, signed char feature_minzoom, int child_shards, int max_zoom_increment, long long seq, int tippecanoe_minzoom, int tippecanoe_maxzoom, int segment, unsigned *initial_x, unsigned *initial_y, std::vector<long long> &metakeys, std::vector<long long> &metavals, bool has_id, unsigned long long id, unsigned long long index, unsigned long long label_point, long long extent) {
if (geom.size() > 0 && (nextzoom <= maxzoom || additional[A_EXTEND_ZOOMS])) {
if (geom.size() > 0 && (nextzoom <= maxzoom || additional[A_EXTEND_ZOOMS] || extend_zooms_max > 0)) {
int xo, yo;
int span = 1 << (nextzoom - z);
@@ -3238,9 +3238,14 @@ int traverse_zooms(int *geomfd, off_t *geom_size, char *stringpool, std::atomic<
z = args[thread].wrote_zoom;
}
if (additional[A_EXTEND_ZOOMS] && z == maxzoom && args[thread].still_dropping && maxzoom < MAX_ZOOM) {
maxzoom++;
}
if (args[thread].still_dropping) {
if (additional[A_EXTEND_ZOOMS] && z == maxzoom && maxzoom < MAX_ZOOM) {
maxzoom++;
} else if (extend_zooms_max > 0 && z == maxzoom && maxzoom < MAX_ZOOM) {
maxzoom++;
extend_zooms_max--;
}
}
}
if ((size_t) z >= strategies.size()) {