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#pragma once
#include <mbgl/layout/layout.hpp>
#include <mbgl/renderer/bucket_parameters.hpp>
#include <mbgl/geometry/feature_index.hpp>
#include <mbgl/renderer/render_layer.hpp>
#include <mbgl/renderer/layers/render_circle_layer.hpp>
namespace mbgl {
class CircleFeature {
public:
const uint32_t i;
std::unique_ptr<GeometryTileFeature> feature;
};
template <class B>
class CircleLayout : public Layout {
public:
CircleLayout(const BucketParameters& parameters,
const std::vector<const RenderLayer*>& layers,
std::unique_ptr<GeometryTileLayer> sourceLayer_,
ImageDependencies&)
: Layout(),
bucketLeaderID(layers.at(0)->getID()),
mode(parameters.mode),
sourceLayer(std::move(sourceLayer_)),
zoom(parameters.tileID.overscaledZ),
overscaling(parameters.tileID.overscaleFactor()) {
using Layer = typename B::RenderLayerType;
const auto renderLayer = static_cast<const Layer*>(layers.at(0));
const typename Layer::StyleLayerImpl& leader = renderLayer->impl();
sourceLayerID = leader.sourceLayer;
for (const auto& layer : layers) {
const typename B::PossiblyEvaluatedPaintProperties evaluatedProps = static_cast<const Layer*>(layer)->paintProperties();
layerPaintProperties.emplace(layer->getID(), std::move(evaluatedProps));
}
const size_t featureCount = sourceLayer->featureCount();
for (size_t i = 0; i < featureCount; ++i) {
auto feature = sourceLayer->getFeature(i);
if (!leader.filter(style::expression::EvaluationContext { this->zoom, feature.get() })) continue;
features.push_back({static_cast<uint32_t>(i), std::move(feature)});
}
}
~CircleLayout() final = default;
bool hasDependencies() const override {
return false;
}
void createBucket(const ImagePositions&, std::unique_ptr<FeatureIndex>& featureIndex, std::unordered_map<std::string, std::shared_ptr<Bucket>>& buckets, const bool, const bool) override {
auto bucket = std::make_shared<B>(layerPaintProperties, zoom, mode);
for (auto & f : features) {
const auto i = f.i;
std::unique_ptr<GeometryTileFeature> feature = std::move(f.feature);
GeometryCollection geometries = feature->getGeometries();
bucket->addFeature(*feature, geometries, {}, {});
featureIndex->insert(geometries, i, sourceLayerID, bucketLeaderID);
}
if (bucket->hasData()) {
for (const auto& pair : layerPaintProperties) {
buckets.emplace(pair.first, bucket);
}
}
};
std::map<std::string, typename B::PossiblyEvaluatedPaintProperties> layerPaintProperties;
std::string bucketLeaderID;
const MapMode mode;
private:
const std::unique_ptr<GeometryTileLayer> sourceLayer;
std::vector<CircleFeature> features;
std::string sourceLayerID;
const float zoom;
const uint32_t overscaling;
};
} // namespace mbgl
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