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Avoid more potentially slow calls to wagyu with large geometries

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This commit is contained in:
Erica Fischer
2025-05-06 16:51:01 -07:00
parent f6882c9a6c
commit b07e04a3a8
5 changed files with 24 additions and 19 deletions
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clip.cpp
+5 -4
View File
@@ -2558,11 +2558,11 @@ drawvec coalesce_linestring(drawvec const &geom) {
return out;
}
drawvec coalesce_polygon(drawvec const &geom) {
drawvec coalesce_polygon(drawvec const &geom, bool scale_up) {
// wagyu should be able to straightforwardly handle
// anything under a few hundred thousand vertices
if (geom.size() < 100000) {
return clean_or_clip_poly(geom, 0, 0, false, false);
return clean_or_clip_poly(geom, 0, 0, false, scale_up);
}
// These geometries were assembled in geometric order,
@@ -2589,14 +2589,14 @@ drawvec coalesce_polygon(drawvec const &geom) {
for (size_t k = 0; k < i; k++) {
geom1[k] = geom[k];
}
geom1 = coalesce_polygon(geom1);
geom1 = coalesce_polygon(geom1, scale_up);
std::vector<draw> geom2;
geom2.resize(geom.size() - i);
for (size_t k = i; k < geom.size(); k++) {
geom2[k - i] = geom[k];
}
geom2 = coalesce_polygon(geom2);
geom2 = coalesce_polygon(geom2, scale_up);
size_t brk = geom1.size();
geom1.resize(brk + geom2.size());
@@ -2604,6 +2604,7 @@ drawvec coalesce_polygon(drawvec const &geom) {
geom1[brk + k] = geom2[k];
}
geom2.clear();
return clean_or_clip_poly(geom1, 0, 0, false, false);
}
geometry.hpp
+1 -1
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@@ -173,7 +173,7 @@ void get_quadkey_bounds(long long xmin, long long ymin, long long xmax, long lon
clipbbox parse_clip_poly(std::string arg);
bool line_is_too_small(drawvec const &geometry, int z, int detail);
drawvec coalesce_polygon(drawvec const &geom);
drawvec coalesce_polygon(drawvec const &geom, bool scale_up);
drawvec coalesce_linestring(drawvec const &geom);
#endif
tests/coalesce-id/out/-z1_--coalesce_--reorder.json
+1 -1
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File diff suppressed because one or more lines are too long
tests/coalesce-tract/out/-P_--coalesce_--reorder_-z11_-Z11_-y_STATEFP10_-y_COUNTYFP10_-l_merged.json
+1 -1
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@@ -136,7 +136,7 @@
,
{ "type": "FeatureCollection", "properties": { "zoom": 11, "x": 331, "y": 793 }, "features": [
{ "type": "FeatureCollection", "properties": { "layer": "merged", "version": 2, "extent": 4096 }, "features": [
{ "type": "Feature", "properties": { "STATEFP10": "06", "COUNTYFP10": "001" }, "geometry": { "type": "Polygon", "coordinates": [ [ [ -121.731477, 37.582133 ], [ -121.637192, 37.582133 ], [ -121.637192, 37.482725 ], [ -121.640625, 37.482759 ], [ -121.655903, 37.482827 ], [ -121.661739, 37.482827 ], [ -121.670408, 37.482725 ], [ -121.690149, 37.482827 ], [ -121.714954, 37.483645 ], [ -121.741176, 37.483951 ], [ -121.765466, 37.484019 ], [ -121.786280, 37.484224 ], [ -121.786366, 37.484326 ], [ -121.795421, 37.483985 ], [ -121.800742, 37.483985 ], [ -121.816406, 37.484155 ], [ -121.819839, 37.484190 ], [ -121.819839, 37.582133 ], [ -121.731477, 37.582133 ] ], [ [ -121.671138, 37.483611 ], [ -121.670537, 37.482930 ], [ -121.670580, 37.483032 ], [ -121.671138, 37.483611 ] ] ] } }
{ "type": "Feature", "properties": { "STATEFP10": "06", "COUNTYFP10": "001" }, "geometry": { "type": "Polygon", "coordinates": [ [ [ -121.731477, 37.582133 ], [ -121.637192, 37.582133 ], [ -121.637192, 37.482725 ], [ -121.640625, 37.482759 ], [ -121.655903, 37.482827 ], [ -121.661739, 37.482827 ], [ -121.670408, 37.482725 ], [ -121.690149, 37.482827 ], [ -121.714954, 37.483645 ], [ -121.741176, 37.483951 ], [ -121.765466, 37.484019 ], [ -121.786280, 37.484224 ], [ -121.786366, 37.484326 ], [ -121.795421, 37.483985 ], [ -121.800742, 37.483985 ], [ -121.816406, 37.484155 ], [ -121.819839, 37.484190 ], [ -121.819839, 37.582133 ], [ -121.731477, 37.582133 ] ], [ [ -121.671138, 37.483611 ], [ -121.670537, 37.482930 ], [ -121.670408, 37.482725 ], [ -121.670580, 37.483032 ], [ -121.671138, 37.483611 ] ] ] } }
] }
] }
,
tile.cpp
+16 -12
View File
@@ -638,7 +638,8 @@ static double simplify_feature(serial_feature *p, drawvec const &shared_nodes, n
// introducing shards between shapes that otherwise would have
// unioned exactly.
if (t == VT_POLYGON) {
geom = coalesce_polygon(geom);
// don't scale up since this is still world coordinates
geom = coalesce_polygon(geom, false);
} else if (t == VT_LINE) {
geom = coalesce_linestring(geom);
}
@@ -700,8 +701,8 @@ static void *simplification_worker(void *v) {
drawvec before = geom;
if (!a->trying_to_stop_early) {
// we can try scaling up because this is now tile scale
geom = clean_or_clip_poly(geom, 0, 0, false, true);
// scale up since this is now tile coordinates
geom = coalesce_polygon(geom, true);
if (additional[A_DEBUG_POLYGON]) {
check_polygon(geom);
}
@@ -2218,15 +2219,17 @@ long long write_tile(decompressor *geoms, std::atomic<long long> *geompos_in, ch
// may not be very effective for reducing memory usage.
for (; simplified_geometry_through < features.size(); simplified_geometry_through++) {
simplify_feature(&*features[simplified_geometry_through], shared_nodes, shared_nodes_map, nodepos, shared_nodes_bloom);
if (features[simplified_geometry_through]->t == VT_POLYGON) {
drawvec to_clean = features[simplified_geometry_through]->geometry;
// don't scale up because this is still world coordinates
to_clean = clean_or_clip_poly(to_clean, 0, 0, false, false);
features[simplified_geometry_through]->geometry = std::move(to_clean);
if (features[simplified_geometry_through]->coalesced) {
if (features[simplified_geometry_through]->t == VT_POLYGON) {
// don't scale up since this is still world coordinates
// hopefully wagyu won't break the shared nodes
features[simplified_geometry_through]->geometry = coalesce_polygon(features[simplified_geometry_through]->geometry, false);
} else if (features[simplified_geometry_through]->t == VT_LINE) {
features[simplified_geometry_through]->geometry = coalesce_linestring(features[simplified_geometry_through]->geometry);
}
}
simplify_feature(&*features[simplified_geometry_through], shared_nodes, shared_nodes_map, nodepos, shared_nodes_bloom);
}
unsimplified_geometry_size = 0;
@@ -2492,7 +2495,8 @@ long long write_tile(decompressor *geoms, std::atomic<long long> *geompos_in, ch
if (layer_features[x]->t == VT_POLYGON) {
if (layer_features[x]->coalesced) {
layer_features[x]->geometry = coalesce_polygon(layer_features[x]->geometry);
// scale up since this is now tile coordinates
layer_features[x]->geometry = coalesce_polygon(layer_features[x]->geometry, true);
}
layer_features[x]->geometry = close_poly(layer_features[x]->geometry);