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Push off attribute copying until after bin assignment

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This commit is contained in:
Erica Fischer
2024-08-29 12:05:04 -07:00
parent 5e98b63c06
commit 2ee982c54f
1 changed files with 29 additions and 8 deletions
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clip.cpp
+29 -8
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@@ -1334,10 +1334,6 @@ mvt_tile assign_to_bins(mvt_tile const &features, std::vector<mvt_layer> const &
mvt_feature outfeature;
outfeature.geometry = bin.geometry;
outfeature.type = bin.type;
for (size_t i = 0; i + 1 < bin.tags.size(); i += 2) {
outlayer.tag(outfeature, bins[e.layer].keys[bin.tags[i]], bins[e.layer].values[bin.tags[i + 1]]);
}
a.outfeature = outlayer.features.size();
a.counter = counters.size();
@@ -1373,10 +1369,24 @@ mvt_tile assign_to_bins(mvt_tile const &features, std::vector<mvt_layer> const &
} else /* EXIT */ {
auto const &found = active.find({e.layer, e.feature});
if (found != active.end()) {
mvt_value v;
v.type = mvt_uint;
v.numeric_value.uint_value = counters[found->counter];
outlayer.tag(outlayer.features[found->outfeature], "bin-count", v);
mvt_feature &outfeature = outlayer.features[found->outfeature];
if (counters[found->counter] >= 0) {
const mvt_feature &bin = bins[e.layer].features[e.feature];
// copy attributes from the original bin feature
for (size_t i = 0; i + 1 < bin.tags.size(); i += 2) {
outlayer.tag(outfeature, bins[e.layer].keys[bin.tags[i]], bins[e.layer].values[bin.tags[i + 1]]);
}
// new attribute for number of features assigned to the bin
mvt_value v;
v.type = mvt_uint;
v.numeric_value.uint_value = counters[found->counter];
outlayer.tag(outfeature, "bin-count", v);
} else {
outfeature.geometry.clear();
}
active.erase(found);
} else {
@@ -1386,6 +1396,17 @@ mvt_tile assign_to_bins(mvt_tile const &features, std::vector<mvt_layer> const &
}
}
#if 0
// crunch out bin features whose geometry we cleared along the way
size_t out = 0;
for (size_t i = 0; i < outlayer.features.size(); i++) {
if (outlayer.features[i].geometry.size() > 0) {
outlayer.features[out++] = outlayer.features[i];
}
}
outlayer.features.resize(out);
#endif
mvt_tile ret;
ret.layers.push_back(outlayer);
return ret;