1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
|
#include "routing/routing_helpers.hpp"
#include "routing/road_point.hpp"
#include "routing/segment.hpp"
#include "traffic/traffic_info.hpp"
#include "base/stl_helpers.hpp"
#include <algorithm>
#include <utility>
namespace
{
double constexpr KMPH2MPS = 1000.0 / (60 * 60);
} // namespace
namespace routing
{
using namespace std;
using namespace traffic;
void FillSegmentInfo(vector<Segment> const & segments, vector<Junction> const & junctions,
Route::TTurns const & turns, Route::TStreets const & streets,
Route::TTimes const & times, shared_ptr<TrafficStash> const & trafficStash,
vector<RouteSegment> & routeSegment)
{
CHECK_EQUAL(segments.size() + 1, junctions.size(), ());
CHECK(!turns.empty(), ());
CHECK(!times.empty(), ());
CHECK(is_sorted(turns.cbegin(), turns.cend(), my::LessBy(&turns::TurnItem::m_index)), ());
CHECK(is_sorted(streets.cbegin(), streets.cend(), my::LessBy(&Route::TStreetItem::first)), ());
CHECK(is_sorted(times.cbegin(), times.cend(), my::LessBy(&Route::TTimeItem::first)), ());
CHECK_LESS(turns.back().m_index, junctions.size(), ());
if (!streets.empty())
CHECK_LESS(streets.back().first, junctions.size(), ());
CHECK_LESS(times.back().first, junctions.size(), ());
routeSegment.clear();
if (segments.empty())
return;
routeSegment.reserve(segments.size());
// Note. |turns|, |streets| and |times| have point based index.
// On the other hand turns, street names and times are considered for further end of |segments| after conversion
// to |segmentInfo|. It means that street, turn and time information of zero point will be lost after
// conversion to |segmentInfo|.
size_t turnIdx = turns[0].m_index != 0 ? 0 : 1;
size_t streetIdx = (!streets.empty() && streets[0].first != 0) ? 0 : 1;
size_t timeIdx = times[0].first != 0 ? 0 : 1;
double routeLengthMeters = 0.0;
double routeLengthMerc = 0.0;
double timeFromBeginningS = 0.0;
for (size_t i = 0; i < segments.size(); ++i)
{
size_t const segmentEndPointIdx = i + 1;
turns::TurnItem curTurn;
CHECK_LESS_OR_EQUAL(turnIdx, turns.size(), ());
if (turnIdx != turns.size() && turns[turnIdx].m_index == segmentEndPointIdx)
{
curTurn = turns[turnIdx];
if (turnIdx + 1 < turns.size())
++turnIdx;
}
string curStreet;
if (!streets.empty())
{
CHECK_LESS_OR_EQUAL(streetIdx, streets.size(), ());
if (streetIdx != streets.size() && streets[streetIdx].first == segmentEndPointIdx)
{
curStreet = streets[streetIdx].second;
if (streetIdx + 1 < streets.size())
++streetIdx;
}
}
CHECK_LESS_OR_EQUAL(timeIdx, times.size(), ());
if (timeIdx != times.size() && times[timeIdx].first == segmentEndPointIdx)
{
timeFromBeginningS = times[timeIdx].second;
if (timeIdx + 1 < times.size())
++timeIdx;
}
routeLengthMeters +=
MercatorBounds::DistanceOnEarth(junctions[i].GetPoint(), junctions[i + 1].GetPoint());
routeLengthMerc += junctions[i].GetPoint().Length(junctions[i + 1].GetPoint());
routeSegment.emplace_back(
segments[i], curTurn, junctions[i + 1], curStreet, routeLengthMeters, routeLengthMerc,
timeFromBeginningS,
trafficStash ? trafficStash->GetSpeedGroup(segments[i]) : traffic::SpeedGroup::Unknown,
nullptr /* transitInfo */);
}
}
void ReconstructRoute(IDirectionsEngine & engine, RoadGraphBase const & graph,
shared_ptr<TrafficStash> const & trafficStash,
my::Cancellable const & cancellable, vector<Junction> const & path,
Route::TTimes && times, Route & route)
{
if (path.empty())
{
LOG(LERROR, ("Can't reconstruct route from an empty list of positions."));
return;
}
CHECK_EQUAL(path.size(), times.size(), ());
Route::TTurns turnsDir;
vector<Junction> junctions;
Route::TStreets streetNames;
vector<Segment> segments;
if (!engine.Generate(graph, path, cancellable, turnsDir, streetNames, junctions, segments))
return;
if (cancellable.IsCancelled())
return;
// In case of any errors in IDirectionsEngine::Generate() |junctions| is empty.
if (junctions.empty())
{
LOG(LERROR, ("Internal error happened while turn generation."));
return;
}
CHECK_EQUAL(path.size(), junctions.size(),
("Size of path:", path.size(), "size of junctions:", junctions.size()));
vector<RouteSegment> segmentInfo;
FillSegmentInfo(segments, junctions, turnsDir, streetNames, times, trafficStash, segmentInfo);
CHECK_EQUAL(segmentInfo.size(), segments.size(), ());
route.SetRouteSegments(move(segmentInfo));
// @TODO(bykoianko) If the start and the finish of a route lies on the same road segment
// engine->Generate() fills with empty vectors |times|, |turnsDir|, |junctions| and |segments|.
// It's not correct and should be fixed. It's necessary to work correctly with such routes.
vector<m2::PointD> routeGeometry;
JunctionsToPoints(junctions, routeGeometry);
route.SetGeometry(routeGeometry.begin(), routeGeometry.end());
}
Segment ConvertEdgeToSegment(NumMwmIds const & numMwmIds, Edge const & edge)
{
if (edge.IsFake())
return Segment();
NumMwmId const numMwmId =
numMwmIds.GetId(edge.GetFeatureId().m_mwmId.GetInfo()->GetLocalFile().GetCountryFile());
return Segment(numMwmId, edge.GetFeatureId().m_index, edge.GetSegId(), edge.IsForward());
}
void CalculateMaxSpeedTimes(RoadGraphBase const & graph, vector<Junction> const & path,
Route::TTimes & times)
{
times.clear();
if (path.empty())
return;
// graph.GetMaxSpeedKMPH() below is used on purpose.
// The idea is while pedestrian (bicycle) routing ways for pedestrians (cyclists) are preferred.
// At the same time routing along big roads is still possible but if there's
// a pedestrian (bicycle) alternative it's prefered. To implement it a small speed
// is set in pedestrian_model (bicycle_model) for big roads. On the other hand
// the most likely a pedestrian (a cyclist) will go along big roads with average
// speed (graph.GetMaxSpeedKMPH()).
double const speedMPS = graph.GetMaxSpeedKMPH() * KMPH2MPS;
CHECK_GREATER(speedMPS, 0.0, ());
times.reserve(path.size());
double trackTimeSec = 0.0;
times.emplace_back(0, trackTimeSec);
for (size_t i = 1; i < path.size(); ++i)
{
double const lengthM =
MercatorBounds::DistanceOnEarth(path[i - 1].GetPoint(), path[i].GetPoint());
trackTimeSec += lengthM / speedMPS;
times.emplace_back(i, trackTimeSec);
}
CHECK_EQUAL(times.size(), path.size(), ());
}
} // namespace routing
|