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-rw-r--r--src/mbgl/map/annotation.cpp582
1 files changed, 446 insertions, 136 deletions
diff --git a/src/mbgl/map/annotation.cpp b/src/mbgl/map/annotation.cpp
index 6df49ec647..c946264593 100644
--- a/src/mbgl/map/annotation.cpp
+++ b/src/mbgl/map/annotation.cpp
@@ -4,6 +4,7 @@
#include <mbgl/map/live_tile.hpp>
#include <mbgl/map/map_data.hpp>
#include <mbgl/util/constants.hpp>
+#include <mbgl/util/geojsonvt/geojsonvt_convert.hpp>
#include <mbgl/util/ptr.hpp>
#include <algorithm>
@@ -11,35 +12,15 @@
namespace mbgl {
-enum class AnnotationType : uint8_t {
- Point,
- Shape
-};
-
-using AnnotationSegment = std::vector<LatLng>;
-using AnnotationSegments = std::vector<AnnotationSegment>;
-
-class Annotation : private util::noncopyable {
- friend class AnnotationManager;
-public:
- Annotation(AnnotationType, const AnnotationSegments&);
-
-private:
- LatLng getPoint() const;
- LatLngBounds getBounds() const { return bounds; }
-
-private:
- const AnnotationType type = AnnotationType::Point;
- const AnnotationSegments geometry;
- std::unordered_map<TileID, std::weak_ptr<const LiveTileFeature>, TileID::Hash> tileFeatures;
- const LatLngBounds bounds;
-};
-
-Annotation::Annotation(AnnotationType type_, const AnnotationSegments& geometry_)
- : type(type_),
+Annotation::Annotation(AnnotationType type_,
+ const AnnotationSegments& geometry_,
+ const StyleProperties& styleProperties_)
+ : styleProperties(styleProperties_),
+ type(type_),
geometry(geometry_),
bounds([this] {
LatLngBounds bounds_;
+ assert(type != AnnotationType::Any);
if (type == AnnotationType::Point) {
bounds_ = { getPoint(), getPoint() };
} else {
@@ -67,6 +48,16 @@ AnnotationManager::~AnnotationManager() {
// Annotation so we can't destruct the object with just the header file.
}
+void AnnotationManager::markStaleTiles(std::unordered_set<TileID, TileID::Hash> ids) {
+ std::lock_guard<std::mutex> lock(mtx);
+ std::copy(ids.begin(), ids.end(), std::inserter(staleTiles, staleTiles.begin()));
+}
+
+std::unordered_set<TileID, TileID::Hash> AnnotationManager::resetStaleTiles() {
+ std::lock_guard<std::mutex> lock(mtx);
+ return std::move(staleTiles);
+}
+
void AnnotationManager::setDefaultPointAnnotationSymbol(const std::string& symbol) {
std::lock_guard<std::mutex> lock(mtx);
defaultPointAnnotationSymbol = symbol;
@@ -77,118 +68,314 @@ uint32_t AnnotationManager::nextID() {
}
vec2<double> AnnotationManager::projectPoint(const LatLng& point) {
+ // Clamp to the latitude limits of Mercator.
+ const double constrainedLatitude = std::fmin(std::fmax(point.latitude, -util::LATITUDE_MAX), util::LATITUDE_MAX);
+
// Project a coordinate into unit space in a square map.
- const double sine = std::sin(point.latitude * M_PI / 180.0);
+ const double sine = std::sin(constrainedLatitude * M_PI / 180.0);
const double x = point.longitude / 360.0 + 0.5;
const double y = 0.5 - 0.25 * std::log((1.0 + sine) / (1.0 - sine)) / M_PI;
return { x, y };
}
-std::pair<std::vector<TileID>, AnnotationIDs>
-AnnotationManager::addPointAnnotations(const std::vector<LatLng>& points,
- const std::vector<std::string>& symbols,
- const MapData& data) {
+std::pair<std::unordered_set<TileID, TileID::Hash>, AnnotationIDs>
+AnnotationManager::addAnnotations(const AnnotationType type,
+ const std::vector<AnnotationSegments>& segments,
+ const std::vector<StyleProperties>& styleProperties,
+ const AnnotationsProperties& annotationsProperties,
+ const MapData& data) {
std::lock_guard<std::mutex> lock(mtx);
+ assert(type != AnnotationType::Any);
+
// We pre-generate tiles to contain each annotation up to the map's max zoom.
// We do this for fast rendering without projection conversions on the fly, as well as
// to simplify bounding box queries of annotations later. Tiles get invalidated when
// annotations are added or removed in order to refresh the map render without
// touching the base map underneath.
- const uint16_t extent = 4096;
+ AnnotationIDs annotationIDs;
+ annotationIDs.reserve((type == AnnotationType::Shape ?
+ segments.size() : // shapes
+ segments[0][0].size())); // points
+
+ std::unordered_set<TileID, TileID::Hash> affectedTiles;
+
+ const uint8_t maxZoom = data.transform.getMaxZoom();
+
+ for (size_t s = 0; s < segments.size(); ++s) {
+
+ if (type == AnnotationType::Point) {
- std::vector<uint32_t> annotationIDs;
- annotationIDs.reserve(points.size());
+ for (size_t l = 0; l < segments[s].size(); ++l) {
- std::vector<TileID> affectedTiles;
+ for (size_t p = 0; p < segments[s][l].size(); ++p) {
- for (size_t i = 0; i < points.size(); ++i) {
- const uint32_t annotationID = nextID();
+ auto& point = segments[s][l][p];
- // track the annotation global ID and its geometry
- auto anno_it = annotations.emplace(
- annotationID,
- std::make_unique<Annotation>(AnnotationType::Point,
- AnnotationSegments({ { points[i] } })));
+ // projection conversion into unit space
+ const auto pp = projectPoint(point);
+
+ const uint32_t pointAnnotationID = nextID();
+
+ // at render time we style the point according to its {sprite} field
+ std::unordered_map<std::string, std::string> pointFeatureProperties;
+ const std::string& symbol = annotationsProperties.at("symbols")[p];
+ if (symbol.length()) {
+ pointFeatureProperties.emplace("sprite", symbol);
+ } else {
+ pointFeatureProperties.emplace("sprite", defaultPointAnnotationSymbol);
+ }
+
+ // add individual point tile feature
+ auto featureAffectedTiles = addTileFeature(
+ pointAnnotationID,
+ AnnotationSegments({{ point }}),
+ std::vector<std::vector<vec2<double>>>({{ pp }}),
+ AnnotationType::Point,
+ {{ }},
+ pointFeatureProperties,
+ maxZoom
+ );
+
+ std::copy(featureAffectedTiles.begin(), featureAffectedTiles.end(), std::inserter(affectedTiles, affectedTiles.begin()));
+
+ annotationIDs.push_back(pointAnnotationID);
+ }
+ }
+ } else {
+
+ const uint32_t shapeAnnotationID = nextID();
+
+ // current shape tiles are on-the-fly, so we don't get any "affected tiles"
+ // and just expire all annotation tiles for shape adds
+
+ addTileFeature(
+ shapeAnnotationID,
+ segments[s],
+ {{ }},
+ AnnotationType::Shape,
+ styleProperties[s],
+ {{ }},
+ maxZoom
+ );
+
+ annotationIDs.push_back(shapeAnnotationID);
+ }
+ }
+
+ // Tile:IDs that need refreshed and the annotation identifiers held onto by the client.
+ return std::make_pair(affectedTiles, annotationIDs);
+}
- const uint8_t maxZoom = data.transform.getMaxZoom();
+std::unordered_set<TileID, TileID::Hash>
+AnnotationManager::addTileFeature(const uint32_t annotationID,
+ const AnnotationSegments& segments,
+ const std::vector<std::vector<vec2<double>>>& projectedFeature,
+ const AnnotationType& type,
+ const StyleProperties& styleProperties,
+ const std::unordered_map<std::string, std::string>& featureProperties,
+ const uint8_t maxZoom) {
- // side length of map at this zoom
+ assert(type != AnnotationType::Any);
+
+ // track the annotation global ID and its original geometry
+ auto anno_it = annotations.emplace(annotationID,
+ std::make_unique<Annotation>(type, segments, styleProperties));
+
+ std::unordered_set<TileID, TileID::Hash> affectedTiles;
+
+ if (type == AnnotationType::Shape) {
+
+ orderedShapeAnnotations.push_back(annotationID);
+
+ using namespace mapbox::util::geojsonvt;
+
+ const uint32_t z2 = 1 << maxZoom;
+ const double baseTolerance = 3;
+ const uint16_t extent = 4096;
+
+ const double tolerance = baseTolerance / (z2 * extent);
+
+ ProjectedGeometryContainer rings;
+
+ std::vector<LonLat> points;
+
+ for (size_t i = 0; i < segments[0].size(); ++i) { // first segment for now (no holes)
+ const double constraintedLatitude = std::fmin(std::fmax(segments[0][i].latitude, -util::LATITUDE_MAX), util::LATITUDE_MAX);
+ points.push_back(LonLat(segments[0][i].longitude, constraintedLatitude));
+ }
+
+ ProjectedFeatureType featureType;
+
+ if (styleProperties.is<FillProperties>()) {
+ featureType = ProjectedFeatureType::Polygon;
+
+ if (points.front().lon != points.back().lon || points.front().lat != points.back().lat) {
+ points.push_back(LonLat(points.front().lon, points.front().lat));
+ }
+ } else {
+ featureType = ProjectedFeatureType::LineString;
+ }
+
+ ProjectedGeometryContainer ring = Convert::project(points, tolerance);
+
+ rings.members.push_back(ring);
+
+ std::vector<ProjectedFeature> features;
+
+ features.push_back(Convert::create(Tags(), featureType, rings));
+
+ shapeTilers.emplace(annotationID, std::make_unique<GeoJSONVT>(features, maxZoom));
+
+ } else {
+
+ // side length of map at max zoom
uint32_t z2 = 1 << maxZoom;
- // projection conversion into unit space
- const vec2<double> p = projectPoint(points[i]);
+ const uint16_t extent = 4096;
- uint32_t x = p.x * z2;
- uint32_t y = p.y * z2;
+ uint32_t x = 0;
+ uint32_t y = 0;
for (int8_t z = maxZoom; z >= 0; z--) {
- affectedTiles.emplace_back(z, x, y, z);
- TileID tileID = affectedTiles.back();
-
- // calculate tile coordinate
- const Coordinate coordinate(extent * (p.x * z2 - x), extent * (p.y * z2 - y));
-
- const GeometryCollection geometries({ { { { coordinate } } } });
-
- // at render time we style the annotation according to its {sprite} field
- const std::map<std::string, std::string> properties = {
- { "sprite", (symbols[i].length() ? symbols[i] : defaultPointAnnotationSymbol) }
- };
-
- auto feature =
- std::make_shared<const LiveTileFeature>(FeatureType::Point, geometries, properties);
-
- auto tile_it = tiles.find(tileID);
- if (tile_it != tiles.end()) {
- //
- // We have this tile created already. Add this feature to it.
- //
- // get point layer & add feature
- auto layer =
- tile_it->second.second->getMutableLayer(layerID);
- layer->addFeature(feature);
- // record annotation association with tile
- tile_it->second.first.insert(annotationID);
+
+ std::unordered_map<TileID, GeometryCollection, TileID::Hash> featureTiles;
+
+ if (type == AnnotationType::Point) {
+ auto& pp = projectedFeature[0][0];
+
+ x = pp.x * z2;
+ y = pp.y * z2;
+
+ const Coordinate coordinate(extent * (pp.x * z2 - x), extent * (pp.y * z2 - y));
+
+ GeometryCollection geometries = {{ {{ coordinate }} }};
+
+ featureTiles.emplace(TileID(z, x, y, z), geometries);
} else {
- //
- // We need to create a new tile for this feature.
- //
- // create point layer & add feature
- util::ptr<LiveTileLayer> layer = std::make_shared<LiveTileLayer>();
- layer->addFeature(feature);
- // create tile & record annotation association
- auto tile_pos = tiles.emplace(
- tileID, std::make_pair(std::unordered_set<uint32_t>({ annotationID }),
- std::make_unique<LiveTile>()));
- // add point layer to tile
- tile_pos.first->second.second->addLayer(layerID, layer);
+ for (size_t l = 0; l < projectedFeature.size(); ++l) {
+
+ std::vector<Coordinate> line;
+
+ for (size_t p = 0; p < projectedFeature[l].size(); ++p) {
+
+ auto& pp = projectedFeature[l][p];
+
+ x = pp.x * z2;
+ y = pp.y * z2;
+
+ const Coordinate coordinate(extent * (pp.x * z2 - x), extent * (pp.y * z2 - y));
+
+ auto tile_it = featureTiles.find(TileID(z, x, y, z));
+
+ if (tile_it != featureTiles.end()) {
+ GeometryCollection& geometries = featureTiles.find(TileID(z, x, y, z))->second;
+ if (geometries.size()) {
+ geometries.back().push_back(coordinate);
+ } else {
+ geometries.push_back({{ coordinate }});
+ }
+ } else {
+ GeometryCollection geometries = {{ {{ coordinate }} }};
+ featureTiles.emplace(TileID(z, x, y, z), geometries);
+ }
+ }
+ }
}
- // Record annotation association with tile and tile feature. This is used to determine stale tiles,
- // as well as to remove the feature from the tile upon annotation deletion.
- anno_it.first->second->tileFeatures.emplace(
- tileID, std::weak_ptr<const LiveTileFeature>(feature));
+ for (auto& featureTile : featureTiles) {
+ // determine feature type
+ FeatureType featureType;
+ if (type == AnnotationType::Point) {
+ featureType = FeatureType::Point;
+ } else if (styleProperties.is<LineProperties>()) {
+ featureType = FeatureType::LineString;
+ } else if (styleProperties.is<FillProperties>()) {
+ featureType = FeatureType::Polygon;
+ } else {
+ throw std::runtime_error("Invalid feature type");
+ }
+
+ // create tile feature
+ auto feature = std::make_shared<const LiveTileFeature>(
+ featureType,
+ featureTile.second,
+ featureProperties
+ );
+
+ // check for tile & create if necessary
+ auto tile_pos = tiles.emplace(featureTile.first,
+ std::make_pair(std::unordered_set<uint32_t>({ annotationID }),
+ std::make_unique<LiveTile>()));
+
+ // check for annotation layer & create if necessary
+ util::ptr<LiveTileLayer> layer;
+ std::string layerID = "";
+ if (type == AnnotationType::Point) {
+ layerID = PointLayerID;
+ } else {
+ layerID = ShapeLayerID + "." + std::to_string(annotationID);
+ }
+ if (tile_pos.second || tile_pos.first->second.second->getMutableLayer(layerID) == nullptr) {
+ layer = std::make_shared<LiveTileLayer>();
+ tile_pos.first->second.second->addLayer(layerID, layer);
+ } else {
+ layer = tile_pos.first->second.second->getMutableLayer(layerID);
+
+ // associate annotation with tile
+ tile_pos.first->second.first.insert(annotationID);
+ }
+
+ // add feature to layer
+ layer->addFeature(feature);
+
+ // Record annotation association with tile and tile feature. This is used to determine stale tiles,
+ // as well as to remove the feature from the tile upon annotation deletion.
+ anno_it.first->second->tilePointFeatures.emplace(featureTile.first, std::weak_ptr<const LiveTileFeature>(feature));
+
+ // track affected tile
+ affectedTiles.insert(featureTile.first);
+ }
// get ready for the next-lower zoom number
z2 /= 2;
x /= 2;
y /= 2;
}
-
- annotationIDs.push_back(annotationID);
}
- // Tile:IDs that need refreshed and the annotation identifiers held onto by the client.
- return std::make_pair(affectedTiles, annotationIDs);
+ return affectedTiles;
+}
+
+std::pair<std::unordered_set<TileID, TileID::Hash>, AnnotationIDs>
+AnnotationManager::addPointAnnotations(const AnnotationSegment& points,
+ const AnnotationsProperties& annotationsProperties,
+ const MapData& data) {
+ return addAnnotations(AnnotationType::Point,
+ {{ points }},
+ {{ }},
+ annotationsProperties,
+ data);
}
-std::vector<TileID> AnnotationManager::removeAnnotations(const AnnotationIDs& ids,
- const MapData& data) {
+std::pair<std::unordered_set<TileID, TileID::Hash>, AnnotationIDs>
+AnnotationManager::addShapeAnnotations(const std::vector<AnnotationSegments>& shapes,
+ const std::vector<StyleProperties>& styleProperties,
+ const AnnotationsProperties& annotationsProperties,
+ const MapData& data) {
+ return addAnnotations(AnnotationType::Shape,
+ shapes,
+ styleProperties,
+ annotationsProperties,
+ data);
+}
+
+std::unordered_set<TileID, TileID::Hash> AnnotationManager::removeAnnotations(const AnnotationIDs& ids,
+ const MapData& data) {
std::lock_guard<std::mutex> lock(mtx);
- std::vector<TileID> affectedTiles;
+ std::unordered_set<TileID, TileID::Hash> affectedTiles;
std::vector<uint32_t> z2s;
const uint8_t zoomCount = data.transform.getMaxZoom() + 1;
@@ -207,25 +394,44 @@ std::vector<TileID> AnnotationManager::removeAnnotations(const AnnotationIDs& id
const auto& annotation_it = annotations.find(annotationID);
if (annotation_it != annotations.end()) {
const auto& annotation = annotation_it->second;
- // calculate annotation's affected tile for each zoom
- for (uint8_t z = 0; z < zoomCount; ++z) {
- latLng = annotation->getPoint();
- p = projectPoint(latLng);
- x = z2s[z] * p.x;
- y = z2s[z] * p.y;
- TileID tid(z, x, y, z);
- // erase annotation from tile's list
- auto& tileAnnotations = tiles[tid].first;
- tileAnnotations.erase(annotationID);
- // remove annotation's features from tile
- const auto& features_it = annotation->tileFeatures.find(tid);
- if (features_it != annotation->tileFeatures.end()) {
- const auto& layer =
- tiles[tid].second->getMutableLayer(layerID);
- layer->removeFeature(features_it->second);
- affectedTiles.push_back(tid);
+ // remove feature(s) from relevant tiles
+ if (annotation->type == AnnotationType::Point) {
+ // calculate annotation's affected tile for each zoom
+ for (uint8_t z = 0; z < zoomCount; ++z) {
+ latLng = annotation->getPoint();
+ p = projectPoint(latLng);
+ x = z2s[z] * p.x;
+ y = z2s[z] * p.y;
+ TileID tid(z, x, y, z);
+ // erase annotation from tile's list
+ auto& tileAnnotations = tiles[tid].first;
+ tileAnnotations.erase(annotationID);
+ // remove annotation's features from tile
+ const auto& features_it = annotation->tilePointFeatures.find(tid);
+ if (features_it != annotation->tilePointFeatures.end()) {
+ // points share a layer; remove feature
+ auto layer = tiles[tid].second->getMutableLayer(PointLayerID);
+ layer->removeFeature(features_it->second);
+ affectedTiles.insert(tid);
+ }
+ }
+ } else {
+ // remove shape layer from tiles if relevant
+ for (auto tile_it = tiles.begin(); tile_it != tiles.end(); ++tile_it) {
+ if (tile_it->second.first.count(annotationID)) {
+ tile_it->second.second->removeLayer(ShapeLayerID + "." + std::to_string(annotationID));
+ affectedTiles.insert(tile_it->first);
+ }
}
+
+ // clear shape from render order
+ auto shape_it = std::find(orderedShapeAnnotations.begin(), orderedShapeAnnotations.end(), annotationID);
+ orderedShapeAnnotations.erase(shape_it);
+
+ // clear shape tiler
+ shapeTilers.erase(annotationID);
}
+
annotations.erase(annotationID);
}
}
@@ -234,8 +440,18 @@ std::vector<TileID> AnnotationManager::removeAnnotations(const AnnotationIDs& id
return affectedTiles;
}
-std::vector<uint32_t> AnnotationManager::getAnnotationsInBounds(const LatLngBounds& queryBounds,
- const MapData& data) const {
+const StyleProperties AnnotationManager::getAnnotationStyleProperties(uint32_t annotationID) const {
+ std::lock_guard<std::mutex> lock(mtx);
+
+ auto anno_it = annotations.find(annotationID);
+ assert(anno_it != annotations.end());
+
+ return anno_it->second->styleProperties;
+}
+
+AnnotationIDs AnnotationManager::getAnnotationsInBounds(const LatLngBounds& queryBounds,
+ const MapData& data,
+ const AnnotationType& type) const {
std::lock_guard<std::mutex> lock(mtx);
const uint8_t z = data.transform.getMaxZoom();
@@ -247,7 +463,7 @@ std::vector<uint32_t> AnnotationManager::getAnnotationsInBounds(const LatLngBoun
const TileID nwTile(z, swPoint.x * z2, nePoint.y * z2, z);
const TileID seTile(z, nePoint.x * z2, swPoint.y * z2, z);
- std::vector<uint32_t> matchingAnnotations;
+ std::unordered_set<uint32_t> matchingAnnotations;
for (auto& tile : tiles) {
TileID id = tile.first;
@@ -255,32 +471,50 @@ std::vector<uint32_t> AnnotationManager::getAnnotationsInBounds(const LatLngBoun
if (id.x >= nwTile.x && id.x <= seTile.x && id.y >= nwTile.y && id.y <= seTile.y) {
if (id.x > nwTile.x && id.x < seTile.x && id.y > nwTile.y && id.y < seTile.y) {
// Trivial accept; this tile is completely inside the query bounds, so
- // we'll return all of its annotations.
- std::copy(tile.second.first.begin(), tile.second.first.end(),
- std::back_inserter(matchingAnnotations));
+ // we'll return all of its annotations that match type (if specified).
+ if (type != AnnotationType::Any) {
+ std::copy_if(tile.second.first.begin(), tile.second.first.end(),
+ std::inserter(matchingAnnotations, matchingAnnotations.begin()),
+ [&](const uint32_t annotationID) -> bool {
+ const auto it = annotations.find(annotationID);
+ if (it != annotations.end()) {
+ return (it->second->type == type);
+ } else {
+ return false;
+ }
+ });
+ } else {
+ std::copy(tile.second.first.begin(), tile.second.first.end(),
+ std::inserter(matchingAnnotations, matchingAnnotations.begin()));
+ }
} else {
// This tile is intersected by the query bounds. We need to check the
// tile's annotations' bounding boxes individually.
std::copy_if(tile.second.first.begin(), tile.second.first.end(),
- std::back_inserter(matchingAnnotations),
+ std::inserter(matchingAnnotations, matchingAnnotations.begin()),
[&](const uint32_t annotationID) -> bool {
const auto it = annotations.find(annotationID);
if (it != annotations.end()) {
- const LatLngBounds annoBounds = it->second->getBounds();
- return (annoBounds.sw.latitude >= queryBounds.sw.latitude &&
- annoBounds.ne.latitude <= queryBounds.ne.latitude &&
- annoBounds.sw.longitude >= queryBounds.sw.longitude &&
- annoBounds.ne.longitude <= queryBounds.ne.longitude);
- } else {
- return false;
+ // check type
+ if (type != AnnotationType::Any && it->second->type != type) {
+ return false;
+ }
+
+ // check bounds
+ if (it->second->type == AnnotationType::Point) {
+ return queryBounds.contains(it->second->getPoint());
+ } else if (it->second->type == AnnotationType::Shape) {
+ return queryBounds.intersects(it->second->getBounds());
+ }
}
+ return false;
});
}
}
}
}
- return matchingAnnotations;
+ return AnnotationIDs(matchingAnnotations.begin(), matchingAnnotations.end());
}
LatLngBounds AnnotationManager::getBoundsForAnnotations(const AnnotationIDs& ids) const {
@@ -290,7 +524,7 @@ LatLngBounds AnnotationManager::getBoundsForAnnotations(const AnnotationIDs& ids
for (auto id : ids) {
const auto annotation_it = annotations.find(id);
if (annotation_it != annotations.end()) {
- bounds.extend(annotation_it->second->getPoint());
+ bounds.extend(annotation_it->second->getBounds());
}
}
@@ -300,13 +534,89 @@ LatLngBounds AnnotationManager::getBoundsForAnnotations(const AnnotationIDs& ids
const LiveTile* AnnotationManager::getTile(const TileID& id) {
std::lock_guard<std::mutex> lock(mtx);
- const auto tile_it = tiles.find(id);
- if (tile_it != tiles.end()) {
- return tile_it->second.second.get();
+ // look up any existing annotation tile
+ LiveTile *renderTile = nullptr;
+ const auto tile_lookup_it = tiles.find(id);
+ if (tile_lookup_it != tiles.end()) {
+ // it exists and may have annotations already
+ renderTile = tile_lookup_it->second.second.get();
+ } else if (orderedShapeAnnotations.size()) {
+ // it needs created, but only for on-demand shapes
+ renderTile = tiles.emplace(id,
+ std::make_pair(std::unordered_set<uint32_t>(), std::make_unique<LiveTile>())
+ ).first->second.second.get();
+ }
+
+ if (renderTile != nullptr && orderedShapeAnnotations.size()) {
+
+ // create shape tile layers from GeoJSONVT queries
+ for (auto& tiler_it : shapeTilers) {
+ const auto annotationID = tiler_it.first;
+ const std::string layerID = ShapeLayerID + "." + std::to_string(annotationID);
+
+ // check for existing render layer
+ auto renderLayer = renderTile->getMutableLayer(layerID);
+
+ if (renderLayer == nullptr) {
+ // we might need to create a tile layer for this shape
+ const auto& shapeTile = tiler_it.second->getTile(id.z, id.x, id.y);
+
+ if (shapeTile) {
+
+ // shape exists on this tile; let's make a layer
+ renderLayer = std::make_shared<LiveTileLayer>();
+
+ // convert the features and add to render layer
+ for (auto& shapeFeature : shapeTile.features) {
+
+ using namespace mapbox::util::geojsonvt;
+
+ FeatureType renderType = FeatureType::Unknown;
+
+ if (shapeFeature.type == TileFeatureType::LineString) {
+ renderType = FeatureType::LineString;
+ } else if (shapeFeature.type == TileFeatureType::Polygon) {
+ renderType = FeatureType::Polygon;
+ }
+
+ assert(renderType != FeatureType::Unknown);
+
+ GeometryCollection renderGeometry;
+
+ for (auto& shapeGeometry : shapeFeature.geometry) {
+
+ std::vector<Coordinate> renderLine;
+
+ auto& shapeRing = shapeGeometry.get<TileRing>();
+
+ for (auto& shapePoint : shapeRing.points) {
+ renderLine.emplace_back(shapePoint.x, shapePoint.y);
+ }
+
+ renderGeometry.push_back(renderLine);
+ }
+
+ auto renderFeature = std::make_shared<LiveTileFeature>(renderType, renderGeometry);
+
+ renderLayer->addFeature(renderFeature);
+ }
+
+ // move the layer to the render tile
+ renderTile->addLayer(layerID, renderLayer);
+
+ // associate the annotation with the tile
+ auto tile_update_it = tiles.find(id);
+ assert(tile_update_it != tiles.end());
+ tile_update_it->second.first.insert(annotationID);
+ }
+ }
+ }
}
- return nullptr;
+
+ return renderTile;
}
-const std::string AnnotationManager::layerID = "com.mapbox.annotations.points";
+const std::string AnnotationManager::PointLayerID = "com.mapbox.annotations.points";
+const std::string AnnotationManager::ShapeLayerID = "com.mapbox.annotations.shape";
}