94 lines
2.8 KiB
C++
94 lines
2.8 KiB
C++
#include <llmr/map/tile_data.hpp>
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#include <llmr/map/tile_parser.hpp>
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#include <llmr/map/map.hpp>
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#include <llmr/geometry/fill_buffer.hpp>
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#include <llmr/geometry/line_buffer.hpp>
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#include <llmr/geometry/point_buffer.hpp>
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#include <llmr/geometry/text_buffer.hpp>
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#include <llmr/geometry/elements_buffer.hpp>
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#include <llmr/util/raster.hpp>
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#include <llmr/util/string.hpp>
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#include <uv.h>
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using namespace llmr;
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TileData::TileData(Tile::ID id, Map &map, const std::string url, const bool is_raster)
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: id(id),
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state(State::initial),
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raster(),
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url(url),
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is_raster(is_raster),
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map(map) {
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// Initialize tile debug coordinates
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const std::string str = util::sprintf<32>("%d/%d/%d", id.z, id.x, id.y);
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debugFontBuffer.addText(str.c_str(), 50, 200, 5);
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}
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TileData::~TileData() {
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map.getGlyphAtlas().removeGlyphs((uint64_t)id);
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cancel();
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}
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const std::string TileData::toString() const {
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return util::sprintf<32>("[tile %d/%d/%d]", id.z, id.x, id.y);
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}
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void TileData::request() {
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state = State::loading;
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// Note: Somehow this feels slower than the change to request_http()
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std::weak_ptr<TileData> weak_tile = shared_from_this();
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req = platform::request_http(url, [weak_tile](platform::Response *res) {
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std::shared_ptr<TileData> tile = weak_tile.lock();
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if (!tile || tile->state == State::obsolete) {
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// noop. Tile is obsolete and we're now just waiting for the refcount
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// to drop to zero for destruction.
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} else if (res->code == 200) {
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tile->state = State::loaded;
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tile->data.swap(res->body);
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tile->parse();
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} else {
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fprintf(stderr, "[%s] tile loading failed: %d, %s\n", tile->url.c_str(), res->code, res->error_message.c_str());
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}
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}, [weak_tile]() {
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std::shared_ptr<TileData> tile = weak_tile.lock();
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if (tile) {
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tile->map.redraw();
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}
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}, map.getLoop());
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}
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void TileData::cancel() {
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if (state != State::obsolete) {
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state = State::obsolete;
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platform::cancel_request_http(req.lock());
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}
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}
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bool TileData::parse() {
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if (state != State::loaded) {
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return false;
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}
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try {
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// Parsing creates state that is encapsulated in TileParser. While parsing,
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// the TileParser object writes results into this objects. All other state
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// is going to be discarded afterwards.
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TileParser parser(data, *this, map.getStyle(), map.getGlyphAtlas(), is_raster);
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} catch (const std::exception& ex) {
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fprintf(stderr, "[%p] exception [%d/%d/%d]... failed: %s\n", this, id.z, id.x, id.y, ex.what());
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cancel();
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return false;
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}
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if (state == State::obsolete) {
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return false;
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} else {
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state = State::parsed;
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}
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return true;
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}
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