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#include <mbgl/tile/raster_dem_tile.hpp>
#include <mbgl/tile/raster_dem_tile_worker.hpp>
#include <mbgl/tile/tile_observer.hpp>
#include <mbgl/tile/tile_loader_impl.hpp>
#include <mbgl/style/source.hpp>
#include <mbgl/storage/resource.hpp>
#include <mbgl/storage/response.hpp>
#include <mbgl/renderer/tile_parameters.hpp>
#include <mbgl/renderer/buckets/hillshade_bucket.hpp>
#include <mbgl/actor/scheduler.hpp>
namespace mbgl {
RasterDEMTile::RasterDEMTile(const OverscaledTileID& id_,
const TileParameters& parameters,
const Tileset& tileset)
: Tile(Kind::RasterDEM, id_),
loader(*this, id_, parameters, tileset),
mailbox(std::make_shared<Mailbox>(*Scheduler::GetCurrent())),
worker(Scheduler::GetBackground(),
ActorRef<RasterDEMTile>(*this, mailbox)) {
encoding = tileset.encoding;
if ( id.canonical.y == 0 ){
// this tile doesn't have upper neighboring tiles so marked those as backfilled
neighboringTiles = neighboringTiles | DEMTileNeighbors::NoUpper;
}
if (id.canonical.y + 1 == std::pow(2, id.canonical.z)){
// this tile doesn't have lower neighboring tiles so marked those as backfilled
neighboringTiles = neighboringTiles | DEMTileNeighbors::NoLower;
}
}
RasterDEMTile::~RasterDEMTile() = default;
void RasterDEMTile::setError(std::exception_ptr err) {
loaded = true;
observer->onTileError(*this, err);
}
void RasterDEMTile::setMetadata(optional<Timestamp> modified_, optional<Timestamp> expires_) {
modified = modified_;
expires = expires_;
}
void RasterDEMTile::setData(std::shared_ptr<const std::string> data) {
pending = true;
++correlationID;
worker.self().invoke(&RasterDEMTileWorker::parse, data, correlationID, encoding);
}
void RasterDEMTile::onParsed(std::unique_ptr<HillshadeBucket> result, const uint64_t resultCorrelationID) {
bucket = std::move(result);
loaded = true;
if (resultCorrelationID == correlationID) {
pending = false;
}
renderable = bucket ? true : false;
observer->onTileChanged(*this);
}
void RasterDEMTile::onError(std::exception_ptr err, const uint64_t resultCorrelationID) {
loaded = true;
if (resultCorrelationID == correlationID) {
pending = false;
}
observer->onTileError(*this, err);
}
void RasterDEMTile::upload(gfx::UploadPass& uploadPass) {
if (bucket) {
bucket->upload(uploadPass);
}
}
Bucket* RasterDEMTile::getBucket(const style::Layer::Impl&) const {
return bucket.get();
}
HillshadeBucket* RasterDEMTile::getBucket() const {
return bucket.get();
}
void RasterDEMTile::backfillBorder(const RasterDEMTile& borderTile, const DEMTileNeighbors mask) {
int32_t dx = borderTile.id.canonical.x - id.canonical.x;
const int8_t dy = borderTile.id.canonical.y - id.canonical.y;
const uint32_t dim = pow(2, id.canonical.z);
if (dx == 0 && dy == 0) return;
if (std::abs(dy) > 1) return;
// neighbor is in another world wrap
if (std::abs(dx) > 1) {
if (std::abs(int(dx + dim)) == 1) {
dx += dim;
} else if (std::abs(int(dx - dim)) == 1) {
dx -= dim;
}
}
const HillshadeBucket* borderBucket = borderTile.getBucket();
if (borderBucket) {
const DEMData& borderDEM = borderBucket->getDEMData();
DEMData& tileDEM = bucket->getDEMData();
tileDEM.backfillBorder(borderDEM, dx, dy);
// update the bitmask to indicate that this tiles have been backfilled by flipping the relevant bit
this->neighboringTiles = this->neighboringTiles | mask;
// mark HillshadeBucket.prepared as false so it runs through the prepare render pass
// with the new texture data we just backfilled
bucket->setPrepared(false);
}
}
void RasterDEMTile::setMask(TileMask&& mask) {
if (bucket) {
bucket->setMask(std::move(mask));
}
}
void RasterDEMTile::setNecessity(TileNecessity necessity) {
loader.setNecessity(necessity);
}
} // namespace mbgl
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