Attraction.h

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#pragma once
 
#include <ogdf/basic/Graph.h>
#include <ogdf/basic/geometry.h>
#include <ogdf/energybased/davidson_harel/NodePairEnergy.h>
 
namespace ogdf {
class GraphAttributes;
 
namespace davidson_harel {
 
 
class Attraction : public NodePairEnergy {
public:
    //Initializes data structures to speed up later computations
    explicit Attraction(GraphAttributes& AG);
 
    ~Attraction() { }
 
    void setPreferredEdgelength(double length) { m_preferredEdgeLength = length; }
 
    void reinitializeEdgeLength(double multi);
#ifdef OGDF_DEBUG
    void printInternalData() const override;
#endif
private:
    static const double MULTIPLIER;
    double m_preferredEdgeLength;
    double computeCoordEnergy(node, node, const DPoint&, const DPoint&) const override;
};
 
}
}