QGIS API Documentation  3.12.1-BucureČ™ti (121cc00ff0)
costcalculator.h
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1 /***************************************************************************
2  costcalculator.h
3  ---------------------
4  begin : November 2009
5  copyright : (C) 2009 by Martin Dobias
6  email : wonder dot sk at gmail dot com
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 #ifndef COSTCALCULATOR_H
16 #define COSTCALCULATOR_H
17 
18 #define SIP_NO_FILE
19 
20 #include <QList>
21 #include "palrtree.h"
22 
28 namespace pal
29 {
30  class Feats;
31  class LabelPosition;
32  class Pal;
33 
38  {
39  public:
41  static void addObstacleCostPenalty( pal::LabelPosition *lp, pal::FeaturePart *obstacle, Pal *pal );
42 
47  static void calculateCandidatePolygonRingDistanceCosts( std::vector<std::unique_ptr<pal::LabelPosition> > &lPos, double bbx[4], double bby[4] );
48 
54  static void calculateCandidatePolygonCentroidDistanceCosts( pal::FeaturePart *feature, std::vector<std::unique_ptr<pal::LabelPosition> > &lPos );
55 
57  static double calculatePolygonRingDistance( LabelPosition *candidate, double bbx[4], double bby[4] );
58 
60  static void finalizeCandidatesCosts( Feats *feat, double bbx[4], double bby[4] );
61 
65  static bool candidateSortGrow( const std::unique_ptr<pal::LabelPosition> &c1, const std::unique_ptr<pal::LabelPosition> &c2 );
66  };
67 
75  {
76 
77  public:
78 
83 
88  void addRing( const pal::PointSet *ring );
89 
93  double minimumDistance() const;
94 
95  private:
96 
97  double mPx;
98  double mPy;
99  double mMinDistance = std::numeric_limits<double>::max();
100  };
101 }
102 
103 #endif // COSTCALCULATOR_H
static void addObstacleCostPenalty(pal::LabelPosition *lp, pal::FeaturePart *obstacle, Pal *pal)
Increase candidate&#39;s cost according to its collision with passed feature.
static bool candidateSortGrow(const std::unique_ptr< pal::LabelPosition > &c1, const std::unique_ptr< pal::LabelPosition > &c2)
Sorts label candidates in ascending order of cost.
static double calculatePolygonRingDistance(LabelPosition *candidate, double bbx[4], double bby[4])
Calculates the distance between a label candidate and the closest ring for a polygon feature...
static void calculateCandidatePolygonRingDistanceCosts(std::vector< std::unique_ptr< pal::LabelPosition > > &lPos, double bbx[4], double bby[4])
Updates the costs for polygon label candidates by considering the distance between the candidates and...
Main Pal labeling class.
Definition: pal.h:79
static void calculateCandidatePolygonCentroidDistanceCosts(pal::FeaturePart *feature, std::vector< std::unique_ptr< pal::LabelPosition > > &lPos)
Updates the costs for polygon label candidates by considering the distance between the candidates and...
For usage in problem solving algorithm.
Definition: util.h:53
Main class to handle feature.
Definition: feature.h:95
Calculates distance from a label candidate to nearest polygon ring.
LabelPosition is a candidate feature label position.
Definition: labelposition.h:55
static void finalizeCandidatesCosts(Feats *feat, double bbx[4], double bby[4])
Sort candidates by costs, skip the worse ones, evaluate polygon candidates.