blob: b78b30335e5fa7b3c99d9e694fd03feea9009dd8 (
plain)
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
|
/* $Id$ */
/*
* This file is part of OpenTTD.
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file flowmapper.cpp Definition of flowmapper. */
#include "../stdafx.h"
#include "flowmapper.h"
#include "../safeguards.h"
/**
* Map the paths generated by the MCF solver into flows associated with nodes.
* @param job the link graph component to be used.
*/
void FlowMapper::Run(LinkGraphJob &job) const
{
for (NodeID node_id = 0; node_id < job.Size(); ++node_id) {
Node prev_node = job[node_id];
StationID prev = prev_node.Station();
PathList &paths = prev_node.Paths();
for (PathList::iterator i = paths.begin(); i != paths.end(); ++i) {
Path *path = *i;
uint flow = path->GetFlow();
if (flow == 0) break;
Node node = job[path->GetNode()];
StationID via = node.Station();
StationID origin = job[path->GetOrigin()].Station();
assert(prev != via && via != origin);
/* Mark all of the flow for local consumption at "first". */
node.Flows().AddFlow(origin, via, flow);
if (prev != origin) {
/* Pass some of the flow marked for local consumption at "prev" on
* to this node. */
prev_node.Flows().PassOnFlow(origin, via, flow);
} else {
/* Prev node is origin. Simply add flow. */
prev_node.Flows().AddFlow(origin, via, flow);
}
}
}
for (NodeID node_id = 0; node_id < job.Size(); ++node_id) {
/* Remove local consumption shares marked as invalid. */
Node node = job[node_id];
FlowStatMap &flows = node.Flows();
flows.FinalizeLocalConsumption(node.Station());
if (this->scale) {
/* Scale by time the graph has been running without being compressed. Add 1 to avoid
* division by 0 if spawn date == last compression date. This matches
* LinkGraph::Monthly(). */
uint runtime = job.JoinDate() - job.Settings().recalc_time - job.LastCompression() + 1;
for (FlowStatMap::iterator i = flows.begin(); i != flows.end(); ++i) {
i->second.ScaleToMonthly(runtime);
}
}
/* Clear paths. */
PathList &paths = node.Paths();
for (PathList::iterator i = paths.begin(); i != paths.end(); ++i) {
delete *i;
}
paths.clear();
}
}
|
