QGIS API Documentation 3.37.0-Master (4ace69f83af)
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qgsgraphanalyzer.h
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1/***************************************************************************
2 qgsgraphanalyzer.h
3 --------------------------------------
4 Date : 2011-04-14
5 Copyright : (C) 2010 by Yakushev Sergey
6 Email : YakushevS <at> list.ru
7****************************************************************************
8* *
9* This program is free software; you can redistribute it and/or modify *
10* it under the terms of the GNU General Public License as published by *
11* the Free Software Foundation; either version 2 of the License, or *
12* (at your option) any later version. *
13* *
14***************************************************************************/
15
16#ifndef QGSGRAPHANALYZER_H
17#define QGSGRAPHANALYZER_H
18
19#include <QVector>
20
21#include "qgis_sip.h"
22#include "qgis_analysis.h"
23
24class QgsGraph;
25
32class ANALYSIS_EXPORT QgsGraphAnalyzer
33{
34 public:
35
45 static void SIP_PYALTERNATIVETYPE( SIP_PYLIST ) dijkstra( const QgsGraph *source, int startVertexIdx, int criterionNum, QVector<int> *resultTree = nullptr, QVector<double> *resultCost = nullptr );
46
47#ifdef SIP_RUN
48 % MethodCode
49 QVector< int > treeResult;
50 QVector< double > costResult;
51 QgsGraphAnalyzer::dijkstra( a0, a1, a2, &treeResult, &costResult );
52
53 PyObject *l1 = PyList_New( treeResult.size() );
54 if ( l1 == NULL )
55 {
56 return NULL;
57 }
58 PyObject *l2 = PyList_New( costResult.size() );
59 if ( l2 == NULL )
60 {
61 return NULL;
62 }
63 int i;
64 for ( i = 0; i < costResult.size(); ++i )
65 {
66 PyObject *Int = PyLong_FromLong( treeResult[i] );
67 PyList_SET_ITEM( l1, i, Int );
68 PyObject *Float = PyFloat_FromDouble( costResult[i] );
69 PyList_SET_ITEM( l2, i, Float );
70 }
71
72 sipRes = PyTuple_New( 2 );
73 PyTuple_SET_ITEM( sipRes, 0, l1 );
74 PyTuple_SET_ITEM( sipRes, 1, l2 );
75 % End
76#endif
77
84 static QgsGraph *shortestTree( const QgsGraph *source, int startVertexIdx, int criterionNum );
85};
86
87#endif // QGSGRAPHANALYZER_H
This class performs graph analysis, e.g.
static void dijkstra(const QgsGraph *source, int startVertexIdx, int criterionNum, QVector< int > *resultTree=nullptr, QVector< double > *resultCost=nullptr)
Solve shortest path problem using Dijkstra algorithm.
Mathematical graph representation.
Definition qgsgraph.h:140
#define SIP_PYALTERNATIVETYPE(type)
Definition qgis_sip.h:141