15 #ifndef QGSGRAPHBUILDERH    16 #define QGSGRAPHBUILDERH    62 #endif //QGSGRAPHBUILDERH virtual void addVertex(int id, const QgsPoint &pt)
add vertex 
 
Determine interface for creating a graph. 
 
virtual void addArc(int pt1id, const QgsPoint &pt1, int pt2id, const QgsPoint &pt2, const QVector< QVariant > &properties)
add arc 
 
A class to represent a point. 
 
Mathematics graph representation. 
 
This class making the QgsGraph object. 
 
General purpose distance and area calculator. 
 
Class for storing a coordinate reference system (CRS)