EdgeEnd.h

/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2011 Sandro Santilli <strk@keybit.net>
 * Copyright (C) 2005-2006 Refractions Research Inc.
 * Copyright (C) 2001-2002 Vivid Solutions Inc.
 *
 * This is free software; you can redistribute and/or modify it under
 * the terms of the GNU Lesser General Public Licence as published
 * by the Free Software Foundation. 
 * See the COPYING file for more information.
 *
 **********************************************************************
 *
 * Last port: geomgraph/EdgeEnd.java r428 (JTS-1.12+)
 *
 **********************************************************************/
 
 
#ifndef GEOS_GEOMGRAPH_EDGEEND_H
#define GEOS_GEOMGRAPH_EDGEEND_H
 
#include <geos/export.h>
#include <geos/geom/Coordinate.h>  // for p0,p1
#include <geos/geomgraph/Label.h>  // for composition
#include <geos/inline.h>
 
#include <string>
 
// Forward declarations
namespace geos {
        namespace algorithm {
                class BoundaryNodeRule;
        }
        namespace geomgraph {
                class Edge;
                class Node;
        }
}
 
namespace geos {
namespace geomgraph { // geos.geomgraph

class GEOS_DLL EdgeEnd {
 
public:
 
        friend std::ostream& operator<< (std::ostream&, const EdgeEnd&);
 
        EdgeEnd();
 
        virtual ~EdgeEnd() {}

        EdgeEnd(Edge* newEdge, const geom::Coordinate& newP0,
                        const geom::Coordinate& newP1,
                        const Label& newLabel);

        EdgeEnd(Edge* newEdge, const geom::Coordinate& newP0,
                        const geom::Coordinate& newP1);
 
        Edge* getEdge() { return edge; }
        //virtual Edge* getEdge() { return edge; }
 
        Label& getLabel() { return label; }
 
        const Label& getLabel() const { return label; }
 
        virtual geom::Coordinate& getCoordinate();
 
        const geom::Coordinate& getCoordinate() const { return p0; }
 
        virtual geom::Coordinate& getDirectedCoordinate();
 
        virtual int getQuadrant();
 
        virtual double getDx();
 
        virtual double getDy();
 
        virtual void setNode(Node* newNode);
 
        virtual Node* getNode();
 
        virtual int compareTo(const EdgeEnd *e) const;

        virtual int compareDirection(const EdgeEnd *e) const;
 
        virtual void computeLabel(const algorithm::BoundaryNodeRule& bnr);
 
        virtual std::string print() const;
 
protected:
 
        Edge* edge;// the parent edge of this edge end
 
        Label label;
 
        EdgeEnd(Edge* newEdge);
 
        virtual void init(const geom::Coordinate& newP0,
                        const geom::Coordinate& newP1);
 
private:

        Node* node;         

        geom::Coordinate p0, p1; 

        double dx, dy;     
 
        int quadrant;
};
 
std::ostream& operator<< (std::ostream&, const EdgeEnd&);
 
struct GEOS_DLL  EdgeEndLT {
        bool operator()(const EdgeEnd *s1, const EdgeEnd *s2) const {
                return s1->compareTo(s2)<0;
        }
};
 
} // namespace geos.geomgraph
} // namespace geos
 
//#ifdef GEOS_INLINE
//# include "geos/geomgraph/EdgeEnd.inl"
//#endif
 
#endif // ifndef GEOS_GEOMGRAPH_EDGEEND_H