81bc2f41a6
Includes all edges in the rtree, but adds an `is_startpoint` flag to each. Most plugin behaviour remains unchanged (non-startpoint edges aren't used as snapping candidates), but for map matching, we allow snapping to any edge. This fixes map-matching across previously non-is_startpoint edges, like ferries, private service roads, and a few others.
702 lines
27 KiB
C++
702 lines
27 KiB
C++
#include "guidance/turn_instruction.hpp"
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#include "engine/plugins/plugin_base.hpp"
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#include "engine/plugins/plugin_base.hpp"
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#include "engine/plugins/tile.hpp"
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#include "util/coordinate_calculation.hpp"
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#include "util/string_view.hpp"
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#include "util/vector_tile.hpp"
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#include "util/web_mercator.hpp"
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#include <boost/geometry.hpp>
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#include <boost/geometry/geometries/geometries.hpp>
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#include <boost/geometry/geometries/point_xy.hpp>
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#include <boost/geometry/multi/geometries/multi_linestring.hpp>
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#include <vtzero/builder.hpp>
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#include <vtzero/geometry.hpp>
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#include <vtzero/index.hpp>
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#include <algorithm>
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#include <numeric>
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#include <string>
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#include <unordered_map>
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#include <utility>
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#include <vector>
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#include <cmath>
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#include <cstdint>
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namespace osrm
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{
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namespace engine
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{
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namespace plugins
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{
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constexpr const static int MIN_ZOOM_FOR_TURNS = 15;
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namespace
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{
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using RTreeLeaf = datafacade::BaseDataFacade::RTreeLeaf;
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// Simple container class for WGS84 coordinates
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template <typename T> struct Point final
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{
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Point(T _x, T _y) : x(_x), y(_y) {}
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const T x;
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const T y;
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};
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// Simple container to hold a bounding box
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struct BBox final
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{
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BBox(const double _minx, const double _miny, const double _maxx, const double _maxy)
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: minx(_minx), miny(_miny), maxx(_maxx), maxy(_maxy)
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{
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}
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double width() const { return maxx - minx; }
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double height() const { return maxy - miny; }
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const double minx;
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const double miny;
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const double maxx;
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const double maxy;
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};
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// Simple container for integer coordinates (i.e. pixel coords)
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struct point_type_i final
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{
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point_type_i(std::int64_t _x, std::int64_t _y) : x(_x), y(_y) {}
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const std::int64_t x;
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const std::int64_t y;
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};
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using FixedPoint = Point<std::int32_t>;
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using FloatPoint = Point<double>;
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using FixedLine = std::vector<FixedPoint>;
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using FloatLine = std::vector<FloatPoint>;
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// We use boost::geometry to clip lines/points that are outside or cross the boundary
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// of the tile we're rendering. We need these types defined to use boosts clipping
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// logic
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typedef boost::geometry::model::point<double, 2, boost::geometry::cs::cartesian> point_t;
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typedef boost::geometry::model::linestring<point_t> linestring_t;
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typedef boost::geometry::model::box<point_t> box_t;
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typedef boost::geometry::model::multi_linestring<linestring_t> multi_linestring_t;
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const static box_t clip_box(point_t(-util::vector_tile::BUFFER, -util::vector_tile::BUFFER),
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point_t(util::vector_tile::EXTENT + util::vector_tile::BUFFER,
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util::vector_tile::EXTENT + util::vector_tile::BUFFER));
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/**
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* Return the x1,y1,x2,y2 pixel coordinates of a line in a given
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* tile.
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*
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* @param start the first coordinate of the line
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* @param target the last coordinate of the line
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* @param tile_bbox the boundaries of the tile, in mercator coordinates
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* @return a FixedLine with coordinates relative to the tile_bbox.
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*/
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linestring_t floatLineToTileLine(const FloatLine &geo_line, const BBox &tile_bbox)
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{
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linestring_t unclipped_line;
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for (auto const &pt : geo_line)
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{
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double px_merc = pt.x * util::web_mercator::DEGREE_TO_PX;
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double py_merc = util::web_mercator::latToY(util::FloatLatitude{pt.y}) *
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util::web_mercator::DEGREE_TO_PX;
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// convert lon/lat to tile coordinates
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const auto px = std::round(
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((px_merc - tile_bbox.minx) * util::web_mercator::TILE_SIZE / tile_bbox.width()) *
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util::vector_tile::EXTENT / util::web_mercator::TILE_SIZE);
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const auto py = std::round(
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((tile_bbox.maxy - py_merc) * util::web_mercator::TILE_SIZE / tile_bbox.height()) *
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util::vector_tile::EXTENT / util::web_mercator::TILE_SIZE);
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boost::geometry::append(unclipped_line, point_t(px, py));
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}
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return unclipped_line;
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}
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std::vector<FixedLine> coordinatesToTileLine(const std::vector<util::Coordinate> &points,
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const BBox &tile_bbox)
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{
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FloatLine geo_line;
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for (auto const &c : points)
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{
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geo_line.emplace_back(static_cast<double>(util::toFloating(c.lon)),
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static_cast<double>(util::toFloating(c.lat)));
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}
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linestring_t unclipped_line = floatLineToTileLine(geo_line, tile_bbox);
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multi_linestring_t clipped_line;
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boost::geometry::intersection(clip_box, unclipped_line, clipped_line);
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std::vector<FixedLine> result;
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// b::g::intersection might return a line with one point if the
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// original line was very short and coords were dupes
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for (auto const &cl : clipped_line)
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{
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if (cl.size() < 2)
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continue;
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FixedLine tile_line;
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for (const auto &p : cl)
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tile_line.emplace_back(p.get<0>(), p.get<1>());
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result.emplace_back(std::move(tile_line));
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}
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return result;
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}
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/**
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* Return the x1,y1,x2,y2 pixel coordinates of a line in a given
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* tile.
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*
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* @param start the first coordinate of the line
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* @param target the last coordinate of the line
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* @param tile_bbox the boundaries of the tile, in mercator coordinates
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* @return a FixedLine with coordinates relative to the tile_bbox.
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*/
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FixedLine coordinatesToTileLine(const util::Coordinate start,
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const util::Coordinate target,
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const BBox &tile_bbox)
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{
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FloatLine geo_line;
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geo_line.emplace_back(static_cast<double>(util::toFloating(start.lon)),
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static_cast<double>(util::toFloating(start.lat)));
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geo_line.emplace_back(static_cast<double>(util::toFloating(target.lon)),
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static_cast<double>(util::toFloating(target.lat)));
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linestring_t unclipped_line = floatLineToTileLine(geo_line, tile_bbox);
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multi_linestring_t clipped_line;
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boost::geometry::intersection(clip_box, unclipped_line, clipped_line);
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FixedLine tile_line;
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// b::g::intersection might return a line with one point if the
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// original line was very short and coords were dupes
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if (!clipped_line.empty() && clipped_line[0].size() == 2)
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{
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for (const auto &p : clipped_line[0])
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{
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tile_line.emplace_back(p.get<0>(), p.get<1>());
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}
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}
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return tile_line;
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}
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/**
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* Converts lon/lat into coordinates inside a Mercator projection tile (x/y pixel values)
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*
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* @param point the lon/lat you want the tile coords for
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* @param tile_bbox the mercator boundaries of the tile
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* @return a point (x,y) on the tile defined by tile_bbox
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*/
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FixedPoint coordinatesToTilePoint(const util::Coordinate point, const BBox &tile_bbox)
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{
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const FloatPoint geo_point{static_cast<double>(util::toFloating(point.lon)),
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static_cast<double>(util::toFloating(point.lat))};
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const double px_merc = geo_point.x * util::web_mercator::DEGREE_TO_PX;
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const double py_merc = util::web_mercator::latToY(util::FloatLatitude{geo_point.y}) *
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util::web_mercator::DEGREE_TO_PX;
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const auto px = static_cast<std::int32_t>(std::round(
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((px_merc - tile_bbox.minx) * util::web_mercator::TILE_SIZE / tile_bbox.width()) *
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util::vector_tile::EXTENT / util::web_mercator::TILE_SIZE));
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const auto py = static_cast<std::int32_t>(std::round(
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((tile_bbox.maxy - py_merc) * util::web_mercator::TILE_SIZE / tile_bbox.height()) *
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util::vector_tile::EXTENT / util::web_mercator::TILE_SIZE));
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return FixedPoint{px, py};
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}
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std::vector<RTreeLeaf> getEdges(const DataFacadeBase &facade, unsigned x, unsigned y, unsigned z)
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{
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double min_lon, min_lat, max_lon, max_lat;
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// Convert the z,x,y mercator tile coordinates into WGS84 lon/lat values
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//
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util::web_mercator::xyzToWGS84(
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x, y, z, min_lon, min_lat, max_lon, max_lat, util::web_mercator::TILE_SIZE * 0.10);
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util::Coordinate southwest{util::FloatLongitude{min_lon}, util::FloatLatitude{min_lat}};
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util::Coordinate northeast{util::FloatLongitude{max_lon}, util::FloatLatitude{max_lat}};
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// Fetch all the segments that are in our bounding box.
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// This hits the OSRM StaticRTree
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return facade.GetEdgesInBox(southwest, northeast);
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}
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std::vector<std::size_t> getEdgeIndex(const std::vector<RTreeLeaf> &edges)
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{
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// In order to ensure consistent tile encoding, we need to process
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// all edges in the same order. Differences in OSX/Linux/Windows
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// sorting methods mean that GetEdgesInBox doesn't return the same
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// ordered array on all platforms.
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// GetEdgesInBox is marked `const`, so we can't sort the array itself,
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// instead we create an array of indexes and sort that instead.
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std::vector<std::size_t> sorted_edge_indexes(edges.size(), 0);
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std::iota(
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sorted_edge_indexes.begin(), sorted_edge_indexes.end(), 0); // fill with 0,1,2,3,...N-1
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// Now, sort that array based on the edges list, using the u/v node IDs
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// as the sort condition
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std::sort(sorted_edge_indexes.begin(),
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sorted_edge_indexes.end(),
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[&edges](const std::size_t &left, const std::size_t &right) -> bool {
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return (edges[left].u != edges[right].u) ? edges[left].u < edges[right].u
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: edges[left].v < edges[right].v;
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});
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return sorted_edge_indexes;
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}
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std::vector<NodeID> getSegregatedNodes(const DataFacadeBase &facade,
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const std::vector<RTreeLeaf> &edges)
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{
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std::vector<NodeID> result;
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for (RTreeLeaf const &e : edges)
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{
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if (e.forward_segment_id.enabled && facade.IsSegregated(e.forward_segment_id.id))
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result.push_back(e.forward_segment_id.id);
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}
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return result;
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}
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struct SpeedLayer : public vtzero::layer_builder
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{
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vtzero::value_index_small_uint uint_index;
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vtzero::value_index<vtzero::double_value_type, float, std::unordered_map> double_index;
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vtzero::value_index_internal<std::unordered_map> string_index;
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vtzero::value_index_bool bool_index;
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vtzero::index_value key_speed;
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vtzero::index_value key_is_small;
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vtzero::index_value key_datasource;
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vtzero::index_value key_weight;
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vtzero::index_value key_duration;
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vtzero::index_value key_name;
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vtzero::index_value key_rate;
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vtzero::index_value key_is_startpoint;
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SpeedLayer(vtzero::tile_builder &tile)
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: layer_builder(tile, "speeds"), uint_index(*this), double_index(*this),
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string_index(*this), bool_index(*this), key_speed(add_key_without_dup_check("speed")),
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key_is_small(add_key_without_dup_check("is_small")),
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key_datasource(add_key_without_dup_check("datasource")),
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key_weight(add_key_without_dup_check("weight")),
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key_duration(add_key_without_dup_check("duration")),
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key_name(add_key_without_dup_check("name")), key_rate(add_key_without_dup_check("rate")),
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key_is_startpoint(add_key_without_dup_check("is_startpoint"))
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{
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}
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}; // struct SpeedLayer
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class SpeedLayerFeatureBuilder : public vtzero::linestring_feature_builder
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{
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SpeedLayer &m_layer;
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public:
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SpeedLayerFeatureBuilder(SpeedLayer &layer, uint64_t id)
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: vtzero::linestring_feature_builder(layer), m_layer(layer)
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{
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set_id(id);
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}
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void set_speed(unsigned int value)
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{
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add_property(m_layer.key_speed, m_layer.uint_index(std::min(value, 127u)));
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}
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void set_is_small(bool value) { add_property(m_layer.key_is_small, m_layer.bool_index(value)); }
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void set_datasource(const std::string &value)
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{
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add_property(m_layer.key_datasource,
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m_layer.string_index(vtzero::encoded_property_value{value}));
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}
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void set_weight(double value) { add_property(m_layer.key_weight, m_layer.double_index(value)); }
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void set_duration(double value)
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{
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add_property(m_layer.key_duration, m_layer.double_index(value));
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}
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void set_name(const boost::string_ref &value)
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{
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add_property(
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m_layer.key_name,
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m_layer.string_index(vtzero::encoded_property_value{value.data(), value.size()}));
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}
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void set_rate(double value) { add_property(m_layer.key_rate, m_layer.double_index(value)); }
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void set_is_startpoint(bool value)
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{
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add_property(m_layer.key_is_startpoint, m_layer.bool_index(value));
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}
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}; // class SpeedLayerFeatureBuilder
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struct TurnsLayer : public vtzero::layer_builder
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{
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vtzero::value_index<vtzero::sint_value_type, int, std::unordered_map> int_index;
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vtzero::value_index<vtzero::float_value_type, float, std::unordered_map> float_index;
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vtzero::value_index_internal<std::unordered_map> string_index;
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vtzero::index_value key_bearing_in;
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vtzero::index_value key_turn_angle;
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vtzero::index_value key_cost;
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vtzero::index_value key_weight;
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vtzero::index_value key_turn_type;
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vtzero::index_value key_turn_modifier;
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TurnsLayer(vtzero::tile_builder &tile)
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: layer_builder(tile, "turns"), int_index(*this), float_index(*this), string_index(*this),
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key_bearing_in(add_key_without_dup_check("bearing_in")),
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key_turn_angle(add_key_without_dup_check("turn_angle")),
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key_cost(add_key_without_dup_check("cost")),
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key_weight(add_key_without_dup_check("weight")),
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key_turn_type(add_key_without_dup_check("type")),
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key_turn_modifier(add_key_without_dup_check("modifier"))
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{
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}
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}; // struct TurnsLayer
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class TurnsLayerFeatureBuilder : public vtzero::point_feature_builder
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{
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TurnsLayer &m_layer;
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public:
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TurnsLayerFeatureBuilder(TurnsLayer &layer, uint64_t id)
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: vtzero::point_feature_builder(layer), m_layer(layer)
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{
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set_id(id);
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}
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void set_bearing_in(int value)
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{
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add_property(m_layer.key_bearing_in, m_layer.int_index(value));
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}
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void set_turn_angle(int value)
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{
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add_property(m_layer.key_turn_angle, m_layer.int_index(value));
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}
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void set_cost(float value) { add_property(m_layer.key_cost, m_layer.float_index(value)); }
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void set_weight(float value) { add_property(m_layer.key_weight, m_layer.float_index(value)); }
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void set_turn(osrm::guidance::TurnInstruction value)
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{
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const auto type = osrm::guidance::internalInstructionTypeToString(value.type);
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const auto modifier = osrm::guidance::instructionModifierToString(value.direction_modifier);
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add_property(
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m_layer.key_turn_type,
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m_layer.string_index(vtzero::encoded_property_value{type.data(), type.size()}));
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add_property(
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m_layer.key_turn_modifier,
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m_layer.string_index(vtzero::encoded_property_value{modifier.data(), modifier.size()}));
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}
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}; // class TurnsLayerFeatureBuilder
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void encodeVectorTile(const DataFacadeBase &facade,
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unsigned x,
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unsigned y,
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unsigned z,
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const std::vector<RTreeLeaf> &edges,
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const std::vector<std::size_t> &sorted_edge_indexes,
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const std::vector<routing_algorithms::TurnData> &all_turn_data,
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const std::vector<NodeID> &segregated_nodes,
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std::string &pbf_buffer)
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{
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vtzero::tile_builder tile;
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const auto get_geometry_id = [&facade](auto edge) {
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return facade.GetGeometryIndex(edge.forward_segment_id.id).id;
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};
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// Convert tile coordinates into mercator coordinates
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double min_mercator_lon, min_mercator_lat, max_mercator_lon, max_mercator_lat;
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util::web_mercator::xyzToMercator(
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x, y, z, min_mercator_lon, min_mercator_lat, max_mercator_lon, max_mercator_lat);
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const BBox tile_bbox{min_mercator_lon, min_mercator_lat, max_mercator_lon, max_mercator_lat};
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// XXX leaving in some superfluous scopes to make diff easier to read.
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{
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{
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// Begin the layer features block
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{
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SpeedLayer speeds_layer{tile};
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// Each feature gets a unique id, starting at 1
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unsigned id = 1;
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for (const auto &edge_index : sorted_edge_indexes)
|
|
{
|
|
const auto &edge = edges[edge_index];
|
|
const auto geometry_id = get_geometry_id(edge);
|
|
|
|
// Get coordinates for start/end nodes of segment (NodeIDs u and v)
|
|
const auto a = facade.GetCoordinateOfNode(edge.u);
|
|
const auto b = facade.GetCoordinateOfNode(edge.v);
|
|
// Calculate the length in meters
|
|
const double length =
|
|
osrm::util::coordinate_calculation::haversineDistance(a, b);
|
|
|
|
const auto forward_weight_range =
|
|
facade.GetUncompressedForwardWeights(geometry_id);
|
|
const auto reverse_weight_range =
|
|
facade.GetUncompressedReverseWeights(geometry_id);
|
|
const auto forward_duration_range =
|
|
facade.GetUncompressedForwardDurations(geometry_id);
|
|
const auto reverse_duration_range =
|
|
facade.GetUncompressedReverseDurations(geometry_id);
|
|
const auto forward_datasource_range =
|
|
facade.GetUncompressedForwardDatasources(geometry_id);
|
|
const auto reverse_datasource_range =
|
|
facade.GetUncompressedReverseDatasources(geometry_id);
|
|
const auto forward_weight = forward_weight_range[edge.fwd_segment_position];
|
|
const auto reverse_weight = reverse_weight_range[reverse_weight_range.size() -
|
|
edge.fwd_segment_position - 1];
|
|
|
|
const auto forward_duration = forward_duration_range[edge.fwd_segment_position];
|
|
const auto reverse_duration =
|
|
reverse_duration_range[reverse_duration_range.size() -
|
|
edge.fwd_segment_position - 1];
|
|
const auto forward_datasource_idx =
|
|
forward_datasource_range(edge.fwd_segment_position);
|
|
const auto reverse_datasource_idx = reverse_datasource_range(
|
|
reverse_datasource_range.size() - edge.fwd_segment_position - 1);
|
|
|
|
const auto is_startpoint = edge.is_startpoint;
|
|
|
|
const auto component_id = facade.GetComponentID(edge.forward_segment_id.id);
|
|
const auto name_id = facade.GetNameIndex(edge.forward_segment_id.id);
|
|
auto name = facade.GetNameForID(name_id);
|
|
|
|
// If this is a valid forward edge, go ahead and add it to the tile
|
|
if (forward_duration != 0 && edge.forward_segment_id.enabled)
|
|
{
|
|
// Calculate the speed for this line
|
|
std::uint32_t speed_kmh_idx =
|
|
static_cast<std::uint32_t>(round(length / forward_duration * 10 * 3.6));
|
|
|
|
// Rate values are in meters per weight-unit - and similar to speeds, we
|
|
// present 1 decimal place of precision (these values are added as
|
|
// double/10) lower down
|
|
std::uint32_t forward_rate =
|
|
static_cast<std::uint32_t>(round(length / forward_weight * 10.));
|
|
|
|
auto tile_line = coordinatesToTileLine(a, b, tile_bbox);
|
|
if (!tile_line.empty())
|
|
{
|
|
SpeedLayerFeatureBuilder fbuilder{speeds_layer, id};
|
|
fbuilder.add_linestring_from_container(tile_line);
|
|
|
|
fbuilder.set_speed(speed_kmh_idx);
|
|
fbuilder.set_is_small(component_id.is_tiny);
|
|
fbuilder.set_datasource(
|
|
facade.GetDatasourceName(forward_datasource_idx).to_string());
|
|
fbuilder.set_weight(forward_weight / 10.0);
|
|
fbuilder.set_duration(forward_duration / 10.0);
|
|
fbuilder.set_name(name);
|
|
fbuilder.set_rate(forward_rate / 10.0);
|
|
fbuilder.set_is_startpoint(is_startpoint);
|
|
|
|
fbuilder.commit();
|
|
}
|
|
}
|
|
|
|
// Repeat the above for the coordinates reversed and using the `reverse`
|
|
// properties
|
|
if (reverse_duration != 0 && edge.reverse_segment_id.enabled)
|
|
{
|
|
// Calculate the speed for this line
|
|
std::uint32_t speed_kmh_idx =
|
|
static_cast<std::uint32_t>(round(length / reverse_duration * 10 * 3.6));
|
|
|
|
// Rate values are in meters per weight-unit - and similar to speeds, we
|
|
// present 1 decimal place of precision (these values are added as
|
|
// double/10) lower down
|
|
std::uint32_t reverse_rate =
|
|
static_cast<std::uint32_t>(round(length / reverse_weight * 10.));
|
|
|
|
auto tile_line = coordinatesToTileLine(b, a, tile_bbox);
|
|
if (!tile_line.empty())
|
|
{
|
|
SpeedLayerFeatureBuilder fbuilder{speeds_layer, id};
|
|
fbuilder.add_linestring_from_container(tile_line);
|
|
|
|
fbuilder.set_speed(speed_kmh_idx);
|
|
fbuilder.set_is_small(component_id.is_tiny);
|
|
fbuilder.set_datasource(
|
|
facade.GetDatasourceName(reverse_datasource_idx).to_string());
|
|
fbuilder.set_weight(reverse_weight / 10.0);
|
|
fbuilder.set_duration(reverse_duration / 10.0);
|
|
fbuilder.set_name(name);
|
|
fbuilder.set_rate(reverse_rate / 10.0);
|
|
fbuilder.set_is_startpoint(is_startpoint);
|
|
|
|
fbuilder.commit();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Only add the turn layer to the tile if it has some features (we sometimes won't
|
|
// for tiles of z<16, and tiles that don't show any intersections)
|
|
if (!all_turn_data.empty())
|
|
{
|
|
TurnsLayer turns_layer{tile};
|
|
uint64_t id = 0;
|
|
for (const auto &turn_data : all_turn_data)
|
|
{
|
|
const auto tile_point = coordinatesToTilePoint(turn_data.coordinate, tile_bbox);
|
|
if (boost::geometry::within(point_t(tile_point.x, tile_point.y), clip_box))
|
|
{
|
|
TurnsLayerFeatureBuilder fbuilder{turns_layer, ++id};
|
|
fbuilder.add_point(tile_point);
|
|
|
|
fbuilder.set_bearing_in(turn_data.in_angle);
|
|
fbuilder.set_turn_angle(turn_data.turn_angle);
|
|
fbuilder.set_cost(turn_data.duration / 10.0);
|
|
fbuilder.set_weight(turn_data.weight / 10.0);
|
|
fbuilder.set_turn(turn_data.turn_instruction);
|
|
|
|
fbuilder.commit();
|
|
}
|
|
}
|
|
}
|
|
|
|
// OSM Node tile layer
|
|
{
|
|
std::vector<NodeID> internal_nodes;
|
|
internal_nodes.reserve(edges.size() * 2);
|
|
for (const auto &edge : edges)
|
|
{
|
|
internal_nodes.push_back(edge.u);
|
|
internal_nodes.push_back(edge.v);
|
|
}
|
|
std::sort(internal_nodes.begin(), internal_nodes.end());
|
|
auto new_end = std::unique(internal_nodes.begin(), internal_nodes.end());
|
|
internal_nodes.resize(new_end - internal_nodes.begin());
|
|
|
|
vtzero::layer_builder osmnodes_layer{tile, "osmnodes"};
|
|
|
|
for (const auto &internal_node : internal_nodes)
|
|
{
|
|
const auto coord = facade.GetCoordinateOfNode(internal_node);
|
|
const auto tile_point = coordinatesToTilePoint(coord, tile_bbox);
|
|
if (!boost::geometry::within(point_t(tile_point.x, tile_point.y), clip_box))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
vtzero::point_feature_builder fbuilder{osmnodes_layer};
|
|
fbuilder.set_id(
|
|
static_cast<OSMNodeID::value_type>(facade.GetOSMNodeIDOfNode(internal_node)));
|
|
fbuilder.add_point(tile_point);
|
|
fbuilder.commit();
|
|
}
|
|
}
|
|
|
|
// Internal nodes tile layer
|
|
{
|
|
vtzero::layer_builder internal_nodes_layer{tile, "internal-nodes"};
|
|
|
|
for (auto edgeNodeID : segregated_nodes)
|
|
{
|
|
auto const geomIndex = facade.GetGeometryIndex(edgeNodeID);
|
|
|
|
std::vector<util::Coordinate> points;
|
|
if (geomIndex.forward)
|
|
{
|
|
for (auto const nodeID : facade.GetUncompressedForwardGeometry(geomIndex.id))
|
|
points.push_back(facade.GetCoordinateOfNode(nodeID));
|
|
}
|
|
else
|
|
{
|
|
for (auto const nodeID : facade.GetUncompressedReverseGeometry(geomIndex.id))
|
|
points.push_back(facade.GetCoordinateOfNode(nodeID));
|
|
}
|
|
|
|
auto tile_lines = coordinatesToTileLine(points, tile_bbox);
|
|
if (!tile_lines.empty())
|
|
{
|
|
vtzero::linestring_feature_builder fbuilder{internal_nodes_layer};
|
|
for (auto const &tile_line : tile_lines)
|
|
{
|
|
fbuilder.add_linestring_from_container(tile_line);
|
|
}
|
|
fbuilder.commit();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
tile.serialize(pbf_buffer);
|
|
}
|
|
}
|
|
|
|
Status TilePlugin::HandleRequest(const RoutingAlgorithmsInterface &algorithms,
|
|
const api::TileParameters ¶meters,
|
|
std::string &pbf_buffer) const
|
|
{
|
|
BOOST_ASSERT(parameters.IsValid());
|
|
|
|
const auto &facade = algorithms.GetFacade();
|
|
auto edges = getEdges(facade, parameters.x, parameters.y, parameters.z);
|
|
auto segregated_nodes = getSegregatedNodes(facade, edges);
|
|
|
|
auto edge_index = getEdgeIndex(edges);
|
|
|
|
std::vector<routing_algorithms::TurnData> turns;
|
|
|
|
// If we're zooming into 16 or higher, include turn data. Why? Because turns make the map
|
|
// really cramped, so we don't bother including the data for tiles that span a large area.
|
|
if (parameters.z >= MIN_ZOOM_FOR_TURNS && algorithms.HasGetTileTurns())
|
|
{
|
|
turns = algorithms.GetTileTurns(edges, edge_index);
|
|
}
|
|
|
|
encodeVectorTile(facade,
|
|
parameters.x,
|
|
parameters.y,
|
|
parameters.z,
|
|
edges,
|
|
edge_index,
|
|
turns,
|
|
segregated_nodes,
|
|
pbf_buffer);
|
|
|
|
return Status::Ok;
|
|
}
|
|
}
|
|
}
|
|
}
|