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00016 #ifndef GEOS_GEOMGRAPH_INDEX_SEGMENTINTERSECTOR_H
00017 #define GEOS_GEOMGRAPH_INDEX_SEGMENTINTERSECTOR_H
00018
00019 #include <geos/export.h>
00020 #include <vector>
00021
00022 #include <geos/geom/Coordinate.h>
00023
00024 #ifdef _MSC_VER
00025 #pragma warning(push)
00026 #pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
00027 #endif
00028
00029
00030 namespace geos {
00031 namespace algorithm {
00032 class LineIntersector;
00033 }
00034 namespace geomgraph {
00035 class Node;
00036 class Edge;
00037 }
00038 }
00039
00040 namespace geos {
00041 namespace geomgraph {
00042 namespace index {
00043
00044
00045 class GEOS_DLL SegmentIntersector{
00046
00047 private:
00048
00053 bool hasIntersectionVar;
00054
00055 bool hasProper;
00056
00057 bool hasProperInterior;
00058
00059
00060 geom::Coordinate properIntersectionPoint;
00061
00062 algorithm::LineIntersector *li;
00063
00064 bool includeProper;
00065
00066 bool recordIsolated;
00067
00068
00069
00070
00071
00072 int numIntersections;
00073
00075 std::vector<std::vector<Node*>*> bdyNodes;
00076
00077 bool isTrivialIntersection(Edge *e0,int segIndex0,Edge *e1, int segIndex1);
00078
00079 bool isBoundaryPoint(algorithm::LineIntersector *li,
00080 std::vector<std::vector<Node*>*>& tstBdyNodes);
00081
00082 bool isBoundaryPoint(algorithm::LineIntersector *li,
00083 std::vector<Node*> *tstBdyNodes);
00084
00085 public:
00086
00087 static bool isAdjacentSegments(int i1,int i2);
00088
00089
00090 int numTests;
00091
00092
00093
00094 virtual ~SegmentIntersector() {}
00095
00096 SegmentIntersector(algorithm::LineIntersector *newLi,
00097 bool newIncludeProper, bool newRecordIsolated)
00098 :
00099 hasIntersectionVar(false),
00100 hasProper(false),
00101 hasProperInterior(false),
00102 li(newLi),
00103 includeProper(newIncludeProper),
00104 recordIsolated(newRecordIsolated),
00105 numIntersections(0),
00106 bdyNodes(2),
00107 numTests(0)
00108 {}
00109
00113 void setBoundaryNodes(std::vector<Node*> *bdyNodes0,
00114 std::vector<Node*> *bdyNodes1);
00115
00116 geom::Coordinate& getProperIntersectionPoint();
00117
00118 bool hasIntersection();
00119
00120 bool hasProperIntersection();
00121
00122 bool hasProperInteriorIntersection();
00123
00124 void addIntersections(Edge *e0, int segIndex0, Edge *e1, int segIndex1);
00125
00126 };
00127
00128 }
00129 }
00130 }
00131
00132 #ifdef _MSC_VER
00133 #pragma warning(pop)
00134 #endif
00135
00136 #endif
00137