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#include <mbgl/renderer/sources/render_custom_vector_source.hpp>
#include <mbgl/renderer/render_tile.hpp>
#include <mbgl/renderer/paint_parameters.hpp>
#include <mbgl/tile/geojson_tile.hpp>
#include <mbgl/util/logging.hpp>
#include <mbgl/algorithm/generate_clip_ids.hpp>
#include <mbgl/algorithm/generate_clip_ids_impl.hpp>
#include <mapbox/geojsonvt.hpp>
namespace mbgl {
using namespace style;
RenderCustomVectorSource::RenderCustomVectorSource(Immutable<style::CustomVectorSource::Impl> impl_)
: RenderSource(impl_) {
tilePyramid.setObserver(this);
}
const style::CustomVectorSource::Impl& RenderCustomVectorSource::impl() const {
return static_cast<const style::CustomVectorSource::Impl&>(*baseImpl);
}
bool RenderCustomVectorSource::isLoaded() const {
return tilePyramid.isLoaded();
}
void RenderCustomVectorSource::setTileData(const CanonicalTileID& tileID,
const style::FetchTileResult& result) {
if (result.is<style::Error>()) {
Log::Error(Event::Render, "FetchTile (%d, %d, %d) error: %s", tileID.z, tileID.x, tileID.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 GeoJSONOptions options = impl().getOptions();
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(tileID.z, tileID.x, tileID.y).features;
}
for (auto const& item : tilePyramid.tiles) {
if (item.first.canonical == tileID) {
static_cast<GeoJSONTile*>(item.second.get())->updateData(data);
}
}
}
void RenderCustomVectorSource::update(Immutable<style::Source::Impl> baseImpl_,
const std::vector<Immutable<Layer::Impl>>& layers,
const bool needsRendering,
const bool needsRelayout,
const TileParameters& parameters) {
std::swap(baseImpl, baseImpl_);
enabled = needsRendering;
auto fetchTile = impl().getFetchTileFunction();
FetchTileCallback fetchTileCallback = std::bind(&RenderCustomVectorSource::setTileData, this, std::placeholders::_1, std::placeholders::_2);
const GeoJSONOptions options = impl().getOptions();
tilePyramid.update(layers,
needsRendering,
needsRelayout,
parameters,
SourceType::CustomVector,
util::tileSize,
{ options.minzoom, options.maxzoom },
[&] (const OverscaledTileID& tileID) {
fetchTile(tileID.canonical, fetchTileCallback);
return std::make_unique<GeoJSONTile>(tileID, impl().id, parameters, mapbox::geometry::feature_collection<int16_t>());
});
}
void RenderCustomVectorSource::startRender(PaintParameters& parameters) {
parameters.clipIDGenerator.update(tilePyramid.getRenderTiles());
tilePyramid.startRender(parameters);
}
void RenderCustomVectorSource::finishRender(PaintParameters& parameters) {
tilePyramid.finishRender(parameters);
}
std::vector<std::reference_wrapper<RenderTile>> RenderCustomVectorSource::getRenderTiles() {
return tilePyramid.getRenderTiles();
}
std::unordered_map<std::string, std::vector<Feature>>
RenderCustomVectorSource::queryRenderedFeatures(const ScreenLineString& geometry,
const TransformState& transformState,
const std::vector<const RenderLayer*>& layers,
const RenderedQueryOptions& options) const {
return tilePyramid.queryRenderedFeatures(geometry, transformState, layers, options);
}
std::vector<Feature> RenderCustomVectorSource::querySourceFeatures(const SourceQueryOptions& options) const {
return tilePyramid.querySourceFeatures(options);
}
void RenderCustomVectorSource::onLowMemory() {
tilePyramid.onLowMemory();
}
void RenderCustomVectorSource::dumpDebugLogs() const {
tilePyramid.dumpDebugLogs();
}
} // namespace mbgl
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