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IntersectionAdder.h

00001 /**********************************************************************
00002  * $Id: IntersectionAdder.h 2778 2009-12-03 19:44:00Z mloskot $
00003  *
00004  * GEOS - Geometry Engine Open Source
00005  * http://geos.refractions.net
00006  *
00007  * Copyright (C) 2006      Refractions Research Inc.
00008  *
00009  * This is free software; you can redistribute and/or modify it under
00010  * the terms of the GNU Lesser General Public Licence as published
00011  * by the Free Software Foundation. 
00012  * See the COPYING file for more information.
00013  *
00014  **********************************************************************
00015  *
00016  * Last port: noding/IntersectionAdder.java rev. 1.6 (JTS-1.9)
00017  *
00018  **********************************************************************/
00019 
00020 #ifndef GEOS_NODING_INTERSECTIONADDER_H
00021 #define GEOS_NODING_INTERSECTIONADDER_H
00022 
00023 #include <geos/export.h>
00024 
00025 #include <vector>
00026 #include <iostream>
00027 #include <cstdlib> // for abs()
00028 
00029 #include <geos/inline.h>
00030 
00031 #include <geos/geom/Coordinate.h>
00032 #include <geos/noding/SegmentIntersector.h> // for inheritance
00033 
00034 // Forward declarations
00035 namespace geos {
00036         namespace geom {
00037                 class Coordinate;
00038         }
00039         namespace noding {
00040                 class SegmentString;
00041         }
00042         namespace algorithm {
00043                 class LineIntersector;
00044         }
00045 }
00046 
00047 namespace geos {
00048 namespace noding { // geos.noding
00049 
00059 class GEOS_DLL IntersectionAdder: public SegmentIntersector {
00060 
00061 private:
00062 
00067         bool hasIntersectionVar;
00068         bool hasProper;
00069         bool hasProperInterior;
00070         bool hasInterior;
00071 
00072         // the proper intersection point found
00073         const geom::Coordinate* properIntersectionPoint;
00074 
00075         algorithm::LineIntersector& li;
00076         bool isSelfIntersection;
00077         //bool intersectionFound;
00078 
00085         bool isTrivialIntersection(const SegmentString* e0, int segIndex0,
00086                         const SegmentString* e1, int segIndex1);
00087  
00088     // Declare type as noncopyable
00089     IntersectionAdder(const IntersectionAdder& other);
00090     IntersectionAdder& operator=(const IntersectionAdder& rhs);
00091 
00092 public:
00093 
00094         int numIntersections;
00095         int numInteriorIntersections;
00096         int numProperIntersections;
00097 
00098         // testing only
00099         int numTests;
00100 
00101         IntersectionAdder(algorithm::LineIntersector& newLi)
00102                 :
00103                 hasIntersectionVar(false),
00104                 hasProper(false),
00105                 hasProperInterior(false),
00106                 hasInterior(false),
00107                 properIntersectionPoint(NULL),
00108                 li(newLi),
00109                 numIntersections(0),
00110                 numInteriorIntersections(0),
00111                 numProperIntersections(0),
00112                 numTests(0)
00113         {}
00114 
00115         algorithm::LineIntersector& getLineIntersector() { return li; }
00116 
00121         const geom::Coordinate* getProperIntersectionPoint()  {
00122                 return properIntersectionPoint;
00123         }
00124 
00125         bool hasIntersection() { return hasIntersectionVar; }
00126 
00135         bool hasProperIntersection() { return hasProper; }
00136 
00142         bool hasProperInteriorIntersection() { return hasProperInterior; }
00143 
00148         bool hasInteriorIntersection() { return hasInterior; }
00149 
00150 
00160         void processIntersections(
00161                 SegmentString* e0,  int segIndex0,
00162                 SegmentString* e1,  int segIndex1);
00163 
00164  
00165         static bool isAdjacentSegments(int i1, int i2) {
00166                 return std::abs(i1 - i2) == 1;
00167         }
00168 
00174         virtual bool isDone() const {
00175                 return false;
00176         }
00177 };
00178  
00179 
00180 } // namespace geos.noding
00181 } // namespace geos
00182 
00183 //#ifdef GEOS_INLINE
00184 //# include "geos/noding/IntersectionAdder.inl"
00185 //#endif
00186 
00187 #endif // GEOS_NODING_INTERSECTIONADDER_H
00188 
00189 /**********************************************************************
00190  * $Log$
00191  * Revision 1.2  2006/03/24 09:52:41  strk
00192  * USE_INLINE => GEOS_INLINE
00193  *
00194  * Revision 1.1  2006/03/09 16:46:49  strk
00195  * geos::geom namespace definition, first pass at headers split
00196  *
00197  **********************************************************************/
00198 

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