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#include <mbgl/tile/custom_tile.hpp>
#include <mbgl/tile/geometry_tile_data.hpp>
#include <mbgl/renderer/query.hpp>
#include <mbgl/renderer/tile_parameters.hpp>
#include <mbgl/style/filter_evaluator.hpp>
#include <mbgl/util/logging.hpp>
#include <mbgl/actor/scheduler.hpp>
#include <mapbox/geojsonvt.hpp>
namespace mbgl {
CustomTile::CustomTile(const OverscaledTileID& overscaledTileID,
std::string sourceID_,
const TileParameters& parameters,
const style::GeoJSONOptions options_)
: GeometryTile(overscaledTileID, sourceID_, parameters),
options(options_),
actor(*Scheduler::GetCurrent(), std::bind(&CustomTile::setTileData, this, std::placeholders::_1, std::placeholders::_2)) {
}
void CustomTile::setTileData(const CanonicalTileID&, const style::FetchTileResult& result) {
if (result.is<style::Error>()) {
Log::Error(Event::Render, "FetchTile (%d, %d, %d) error: %s", id.canonical.z, id.canonical.x, id.canonical.y, result.get<style::Error>().message.c_str());
return;
}
auto geoJSON = result.get<mapbox::geojson::geojson>();
auto data = mapbox::geometry::feature_collection<int16_t>();
if (geoJSON.is<FeatureCollection>() && !geoJSON.get<FeatureCollection>().empty()) {
const double scale = util::EXTENT / options.tileSize;
mapbox::geojsonvt::Options vtOptions;
vtOptions.maxZoom = options.maxzoom;
vtOptions.extent = util::EXTENT;
vtOptions.buffer = std::round(scale * options.buffer);
vtOptions.tolerance = scale * options.tolerance;
auto geojsonVt = std::make_unique<mapbox::geojsonvt::GeoJSONVT>(geoJSON, vtOptions);
data = geojsonVt->getTile(id.canonical.z, id.canonical.x, id.canonical.y).features;
}
setData(std::make_unique<GeoJSONTileData>(std::move(data)));
}
void CustomTile::setNecessity(Necessity) {}
void CustomTile::querySourceFeatures(
std::vector<Feature>& result,
const SourceQueryOptions& queryOptions) {
// Ignore the sourceLayer, there is only one
auto layer = getData()->getLayer({});
if (layer) {
auto featureCount = layer->featureCount();
for (std::size_t i = 0; i < featureCount; i++) {
auto feature = layer->getFeature(i);
// Apply filter, if any
if (queryOptions.filter && !(*queryOptions.filter)(*feature)) {
continue;
}
result.push_back(convertFeature(*feature, id.canonical));
}
}
}
ActorRef<style::FetchTileCallback> CustomTile::fetchTileCallback() {
return actor.self();
}
} // namespace mbgl
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