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Fix tile encoding

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Patrick Niklaus 2017-03-02 15:49:32 +00:00 committed by Patrick Niklaus
parent a32f8a6a59
commit e737700c7b
1 changed files with 20 additions and 12 deletions
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32
src/engine/plugins/tile.cpp
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@ -651,6 +651,20 @@ void encodeVectorTile(const datafacade::ContiguousInternalMemoryDataFacadeBase &
// for tiles of z<16, and tiles that don't show any intersections)
if (!all_turn_data.empty())
{
// we need to pre-encode all values here because we need the full offsets later
// for encoding the actual features.
std::vector<std::tuple<util::Coordinate, unsigned, unsigned, unsigned>> encoded_turn_data(all_turn_data.size());
std::transform(all_turn_data.begin(),
all_turn_data.end(),
encoded_turn_data.begin(),
[&](const routing_algorithms::TurnData &t) {
auto angle_idx = use_point_int_value(t.in_angle);
auto turn_idx = use_point_int_value(t.turn_angle);
auto weight_idx = use_point_float_value(t.weight /
10.0); // Note conversion to float here
return std::make_tuple(t.coordinate, angle_idx, turn_idx, weight_idx);
});
// Now write the points layer for turn penalty data:
// Add a layer object to the PBF stream. 3=='layer' from the vector tile spec
// (2.1)
@ -668,7 +682,7 @@ void encodeVectorTile(const datafacade::ContiguousInternalMemoryDataFacadeBase &
// Helper function to encode a new point feature on a vector tile.
const auto encode_tile_point = [&](
const FixedPoint &tile_point,
const routing_algorithms::TurnData &point_turn_data) {
const auto &point_turn_data) {
protozero::pbf_writer feature_writer(point_layer_writer,
util::vector_tile::FEATURE_TAG);
// Field 3 is the "geometry type" field. Value 1 is "point"
@ -677,23 +691,17 @@ void encodeVectorTile(const datafacade::ContiguousInternalMemoryDataFacadeBase &
util::vector_tile::GEOMETRY_TYPE_POINT); // geometry type
feature_writer.add_uint64(util::vector_tile::ID_TAG, id++); // id
{
const auto in_angle_offset = use_point_int_value(point_turn_data.in_angle);
const auto turn_angle_offset =
use_point_int_value(point_turn_data.turn_angle);
const auto weight_offset = use_point_float_value(
point_turn_data.weight / 10.0); // Note conversion to float here
// Write out the 3 properties we want on the feature. These
// refer to indexes in the properties lookup table, which we
// add to the tile after we add all features.
protozero::packed_field_uint32 field(
feature_writer, util::vector_tile::FEATURE_ATTRIBUTES_TAG);
field.add_element(0); // "bearing_in" tag key offset
field.add_element(in_angle_offset);
field.add_element(std::get<1>(point_turn_data));
field.add_element(1); // "turn_angle" tag key offset
field.add_element(turn_angle_offset);
field.add_element(std::get<2>(point_turn_data));
field.add_element(2); // "cost" tag key offset
field.add_element(used_point_ints.size() + weight_offset);
field.add_element(used_point_ints.size() + std::get<3>(point_turn_data));
}
{
// Add the geometry as the last field in this feature
@ -704,9 +712,9 @@ void encodeVectorTile(const datafacade::ContiguousInternalMemoryDataFacadeBase &
};
// Loop over all the turns we found and add them as features to the layer
for (const auto &turndata : all_turn_data)
for (const auto &turndata : encoded_turn_data)
{
const auto tile_point = coordinatesToTilePoint(turndata.coordinate, tile_bbox);
const auto tile_point = coordinatesToTilePoint(std::get<0>(turndata), tile_bbox);
if (!boost::geometry::within(point_t(tile_point.x, tile_point.y), clip_box))
{
continue;