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Reduce NewName Instructructions / Name Changes

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With @karenzshea's name / ref split (ref. #2857) in master we want to
make use of it and reduce `NewName` instructions when ever possible.
This is a first step towards #2744 by using the already existing name
change heuristic from the extractor now in post-processing as well.

Limitations: at the moment we don't have the `SuffixTable` in
post-processing; this would require us serializing and subsequently
deserializing the table, passing it through from the profiles to the
API.
This commit is contained in:
Daniel J. Hofmann
2016-09-12 15:24:15 +02:00
committed by Moritz Kobitzsch
parent 7ffe832ff8
commit 60010dd998
10 changed files with 412 additions and 193 deletions
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src/extractor/guidance/intersection_handler.cpp
+18 -14
View File
@@ -4,6 +4,7 @@
#include "util/coordinate_calculation.hpp"
#include "util/guidance/toolkit.hpp"
#include "util/guidance/toolkit.hpp"
#include "util/simple_logger.hpp"
#include <algorithm>
@@ -90,9 +91,11 @@ TurnInstruction IntersectionHandler::getInstructionForObvious(const std::size_t
const auto &in_data = node_based_graph.GetEdgeData(via_edge);
const auto &out_data = node_based_graph.GetEdgeData(road.turn.eid);
if (in_data.name_id != out_data.name_id &&
requiresNameAnnounced(name_table.GetNameForID(in_data.name_id),
name_table.GetNameForID(out_data.name_id),
street_name_suffix_table))
util::guidance::requiresNameAnnounced(name_table.GetNameForID(in_data.name_id),
name_table.GetRefForID(in_data.name_id),
name_table.GetNameForID(out_data.name_id),
name_table.GetRefForID(out_data.name_id),
street_name_suffix_table))
{
// obvious turn onto a through street is a merge
if (through_street)
@@ -597,17 +600,18 @@ std::size_t IntersectionHandler::findObviousTurn(const EdgeID via_edge,
if (deviation_ratio < DISTINCTION_RATIO / 1.5)
return 0;
// in comparison to another continuing road, we need a better distinction. This prevents
// situations where the turn is probably less obvious. An example are places that have a
// road with the same name entering/exiting:
//
// d
// /
// /
// a -- b
// \
// \
// c
/* in comparison to another continuing road, we need a better distinction. This prevents
situations where the turn is probably less obvious. An example are places that have a
road with the same name entering/exiting:
d
/
/
a -- b
\
\
c
*/
if (turn_data.name_id == continue_data.name_id &&
deviation_ratio < 1.5 * DISTINCTION_RATIO)