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#include <mbgl/tile/geometry_tile_data.hpp>
namespace mbgl {
// Implements a simple in-memory Tile type that holds GeoJSON values. A GeoJSON tile can only have
// one layer, and it is always returned regardless of which layer is requested.
class GeoJSONTileFeature : public GeometryTileFeature {
public:
const mapbox::feature::feature<int16_t>& feature;
GeoJSONTileFeature(const mapbox::feature::feature<int16_t>& feature_)
: feature(feature_) {
}
FeatureType getType() const override {
return apply_visitor(ToFeatureType(), feature.geometry);
}
const PropertyMap& getProperties() const override {
return feature.properties;
}
FeatureIdentifier getID() const override {
return feature.id;
}
GeometryCollection getGeometries() const override {
GeometryCollection geometry = apply_visitor(ToGeometryCollection(), feature.geometry);
// https://github.com/mapbox/geojson-vt-cpp/issues/44
if (getType() == FeatureType::Polygon) {
geometry = fixupPolygons(geometry);
}
return geometry;
}
optional<Value> getValue(const std::string& key) const override {
auto it = feature.properties.find(key);
if (it != feature.properties.end()) {
return optional<Value>(it->second);
}
return optional<Value>();
}
};
class GeoJSONTileLayer : public GeometryTileLayer {
public:
GeoJSONTileLayer(std::shared_ptr<const mapbox::feature::feature_collection<int16_t>> features_)
: features(std::move(features_)) {
}
std::size_t featureCount() const override {
return features->size();
}
std::unique_ptr<GeometryTileFeature> getFeature(std::size_t i) const override {
return std::make_unique<GeoJSONTileFeature>((*features)[i]);
}
std::string getName() const override {
return "";
}
private:
std::shared_ptr<const mapbox::feature::feature_collection<int16_t>> features;
};
class GeoJSONTileData : public GeometryTileData {
public:
GeoJSONTileData(mapbox::feature::feature_collection<int16_t> features_)
: features(std::make_shared<mapbox::feature::feature_collection<int16_t>>(
std::move(features_))) {
}
GeoJSONTileData(std::shared_ptr<const mapbox::feature::feature_collection<int16_t>> features_)
: features(std::move(features_)) {
}
std::unique_ptr<GeometryTileData> clone() const override {
return std::make_unique<GeoJSONTileData>(features);
}
std::unique_ptr<GeometryTileLayer> getLayer(const std::string&) const override {
return std::make_unique<GeoJSONTileLayer>(features);
}
private:
std::shared_ptr<const mapbox::feature::feature_collection<int16_t>> features;
};
} // namespace mbgl
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