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#include <mbgl/style/layers/terrain_layer_impl.hpp>
#include <mbgl/style/geometry_bucket_parameters.hpp>
#include <mbgl/style/raster_bucket_parameters.hpp>
#include <mbgl/renderer/terrain_bucket.hpp>
namespace mbgl {
namespace style {
void TerrainLayer::Impl::cascade(const CascadeParameters& parameters) {
paint.cascade(parameters);
}
bool TerrainLayer::Impl::recalculate(const CalculationParameters& parameters) {
bool hasTransitions = paint.recalculate(parameters);
passes = RenderPass::Translucent;
return hasTransitions;
}
std::unique_ptr<Bucket> TerrainLayer::Impl::createBucket(BucketParameters& params) const {
if (params.is<mapbox::util::recursive_wrapper<GeometryBucketParameters>>()) {
// DEM data encoded into vector tile
auto& parameters = params.get<GeometryBucketParameters>();
auto& layer = parameters.layer;
for (std::size_t i = 0; !parameters.cancelled() && i < layer.featureCount(); i++) {
auto feature = layer.getFeature(i);
if (feature->getType() == FeatureType(4)) {
return std::make_unique<TerrainBucket>(feature->getDEMPyramid());
} else {
// Trying to create a DEM from another feature type.
}
}
} else if (params.is<mapbox::util::recursive_wrapper<RasterBucketParameters>>()) {
// DEM data from raster tile
auto& parameters = params.get<RasterBucketParameters>();
if (parameters.data) {
return std::make_unique<TerrainBucket>(decodeImage(*parameters.data));
}
}
return nullptr;
}
} // namespace style
} // namespace mbgl
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