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Add layer to debug tiles to expose all OSM nodes in that area.

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This commit is contained in:
Daniel Patterson
2017-06-17 17:10:08 +02:00
committed by Patrick Niklaus
parent 93d6fd05a9
commit 4136bf2808
2 changed files with 203 additions and 0 deletions
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src/engine/plugins/tile.cpp
+45
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@@ -831,6 +831,51 @@ void encodeVectorTile(const datafacade::ContiguousInternalMemoryDataFacadeBase &
values_writer.add_float(util::vector_tile::VARIANT_TYPE_FLOAT, value);
}
}
// OSM Node tile layer
{
protozero::pbf_writer point_layer_writer(tile_writer, util::vector_tile::LAYER_TAG);
point_layer_writer.add_uint32(util::vector_tile::VERSION_TAG, 2); // version
point_layer_writer.add_string(util::vector_tile::NAME_TAG, "osmnodes"); // name
point_layer_writer.add_uint32(util::vector_tile::EXTENT_TAG,
util::vector_tile::EXTENT); // extent
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());
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;
}
protozero::pbf_writer feature_writer(point_layer_writer,
util::vector_tile::FEATURE_TAG);
// Field 3 is the "geometry type" field. Value 1 is "point"
feature_writer.add_enum(util::vector_tile::GEOMETRY_TAG,
util::vector_tile::GEOMETRY_TYPE_POINT); // geometry type
const auto osmid =
static_cast<OSMNodeID::value_type>(facade.GetOSMNodeIDOfNode(internal_node));
feature_writer.add_uint64(util::vector_tile::ID_TAG, osmid); // id
// There are no additional properties, just the ID and the geometry
{
// Add the geometry as the last field in this feature
protozero::packed_field_uint32 geometry(
feature_writer, util::vector_tile::FEATURE_GEOMETRIES_TAG);
encodePoint(tile_point, geometry);
}
}
}
}
// protozero serializes data during object destructors, so once the scope closes,
// our result buffer will have all the tile data encoded into it.