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#include <mbgl/tile/geometry_tile.hpp>
#include <mbgl/tile/tile_observer.hpp>
#include <mbgl/tile/geometry_tile_data.hpp>
#include <mbgl/style/layer_impl.hpp>
#include <mbgl/util/worker.hpp>
#include <mbgl/util/work_request.hpp>
#include <mbgl/style/style.hpp>
#include <mbgl/storage/file_source.hpp>
#include <mbgl/geometry/feature_index.hpp>
#include <mbgl/text/collision_tile.hpp>
#include <mbgl/map/transform_state.hpp>
namespace mbgl {
GeometryTile::GeometryTile(const OverscaledTileID& id_,
std::string sourceID,
style::Style& style_,
const MapMode mode_)
: Tile(id_),
style(style_),
worker(style_.workers),
tileWorker(id_,
sourceID,
*style_.spriteStore,
*style_.glyphAtlas,
*style_.glyphStore,
obsolete,
mode_) {
}
void GeometryTile::setError(std::exception_ptr err) {
observer->onTileError(*this, err);
}
void GeometryTile::setData(std::unique_ptr<GeometryTileData> data_) {
if (!data_) {
// This is a 404 response. We're treating these as empty tiles.
workRequest.reset();
availableData = DataAvailability::All;
buckets.clear();
redoPlacement();
observer->onTileLoaded(*this, true);
return;
}
// Mark the tile as pending again if it was complete before to prevent signaling a complete
// state despite pending parse operations.
if (availableData == DataAvailability::All) {
availableData = DataAvailability::Some;
}
// Kick off a fresh parse of this tile. This happens when the tile is new, or
// when tile data changed. Replacing the workdRequest will cancel a pending work
// request in case there is one.
workRequest.reset();
workRequest = worker.parseGeometryTile(tileWorker, style.getLayers(), std::move(data_), targetConfig, [this, config = targetConfig] (TileParseResult result) {
workRequest.reset();
if (result.is<TileParseResultData>()) {
auto& resultBuckets = result.get<TileParseResultData>();
availableData = resultBuckets.complete ? DataAvailability::All : DataAvailability::Some;
// Persist the configuration we just placed so that we can later check whether we need to
// place again in case the configuration has changed.
placedConfig = config;
// Move over all buckets we received in this parse request, potentially overwriting
// existing buckets in case we got a refresh parse.
buckets = std::move(resultBuckets.buckets);
if (isComplete()) {
featureIndex = std::move(resultBuckets.featureIndex);
data = std::move(resultBuckets.tileData);
}
redoPlacement();
observer->onTileLoaded(*this, true);
} else {
availableData = DataAvailability::All;
observer->onTileError(*this, result.get<std::exception_ptr>());
}
});
}
GeometryTile::~GeometryTile() {
cancel();
}
bool GeometryTile::parsePending() {
if (workRequest) {
// There's already parsing or placement going on.
return false;
}
workRequest.reset();
workRequest = worker.parsePendingGeometryTileLayers(tileWorker, targetConfig, [this, config = targetConfig] (TileParseResult result) {
workRequest.reset();
if (result.is<TileParseResultData>()) {
auto& resultBuckets = result.get<TileParseResultData>();
availableData = resultBuckets.complete ? DataAvailability::All : DataAvailability::Some;
// Move over all buckets we received in this parse request, potentially overwriting
// existing buckets in case we got a refresh parse.
for (auto& bucket : resultBuckets.buckets) {
buckets[bucket.first] = std::move(bucket.second);
}
// Persist the configuration we just placed so that we can later check whether we need to
// place again in case the configuration has changed.
placedConfig = config;
if (isComplete()) {
featureIndex = std::move(resultBuckets.featureIndex);
data = std::move(resultBuckets.tileData);
}
redoPlacement();
observer->onTileLoaded(*this, false);
} else {
availableData = DataAvailability::All;
observer->onTileError(*this, result.get<std::exception_ptr>());
}
});
return true;
}
Bucket* GeometryTile::getBucket(const style::Layer& layer) {
const auto it = buckets.find(layer.baseImpl->bucketName());
if (it == buckets.end()) {
return nullptr;
}
assert(it->second);
return it->second.get();
}
void GeometryTile::redoPlacement(const PlacementConfig newConfig) {
targetConfig = newConfig;
redoPlacement();
}
void GeometryTile::redoPlacement() {
// Don't start a new placement request when the current one hasn't completed yet, or when
// we are parsing buckets.
if (workRequest || targetConfig == placedConfig) {
return;
}
workRequest = worker.redoPlacement(tileWorker, buckets, targetConfig, [this, config = targetConfig](std::unique_ptr<CollisionTile> collisionTile) {
workRequest.reset();
// Persist the configuration we just placed so that we can later check whether we need to
// place again in case the configuration has changed.
placedConfig = config;
for (auto& bucket : buckets) {
bucket.second->swapRenderData();
}
if (featureIndex) {
featureIndex->setCollisionTile(std::move(collisionTile));
}
// The target configuration could have changed since we started placement. In this case,
// we're starting another placement run.
if (placedConfig != targetConfig) {
redoPlacement();
} else {
observer->onNeedsRepaint();
}
});
}
void GeometryTile::queryRenderedFeatures(
std::unordered_map<std::string, std::vector<Feature>>& result,
const GeometryCoordinates& queryGeometry,
const TransformState& transformState,
const optional<std::vector<std::string>>& layerIDs) {
if (!featureIndex || !data) return;
featureIndex->query(result,
{ queryGeometry },
transformState.getAngle(),
util::tileSize * id.overscaleFactor(),
std::pow(2, transformState.getZoom() - id.overscaledZ),
layerIDs,
*data,
id.canonical,
style);
}
void GeometryTile::cancel() {
obsolete = true;
workRequest.reset();
}
} // namespace mbgl
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