GEOS
3.3.8
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00001 /********************************************************************** 00002 * 00003 * GEOS - Geometry Engine Open Source 00004 * http://geos.refractions.net 00005 * 00006 * Copyright (C) 2011 Sandro Santilli <strk@keybit.net> 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: operation/predicate/SegmentIntersectionTester.java r378 (JTS-1.12) 00017 * 00018 **********************************************************************/ 00019 00020 #ifndef GEOS_OP_PREDICATE_SEGMENTINTERSECTIONTESTER_H 00021 #define GEOS_OP_PREDICATE_SEGMENTINTERSECTIONTESTER_H 00022 00023 #include <geos/export.h> 00024 00025 #include <geos/algorithm/LineIntersector.h> // for composition 00026 #include <geos/geom/Coordinate.h> // for composition 00027 00028 // Forward declarations 00029 namespace geos { 00030 namespace geom { 00031 class LineString; 00032 class CoordinateSequence; 00033 } 00034 } 00035 00036 namespace geos { 00037 namespace operation { // geos::operation 00038 namespace predicate { // geos::operation::predicate 00039 00048 class GEOS_DLL SegmentIntersectionTester { 00049 00050 private: 00051 00056 algorithm::LineIntersector li; // Robust 00057 00058 bool hasIntersectionVar; 00059 00060 geom::Coordinate pt10; 00061 geom::Coordinate pt11; 00062 geom::Coordinate pt00; 00063 geom::Coordinate pt01; 00064 00065 00066 public: 00067 00068 SegmentIntersectionTester(): hasIntersectionVar(false) {} 00069 00070 bool hasIntersectionWithLineStrings(const geom::LineString &line, 00071 const std::vector<const geom::LineString *>& lines); 00072 00073 bool hasIntersection(const geom::LineString &line, 00074 const geom::LineString &testLine); 00075 00090 bool hasIntersectionWithEnvelopeFilter(const geom::LineString &line, 00091 const geom::LineString &testLine); 00092 00093 00094 }; 00095 00096 } // namespace geos::operation::predicate 00097 } // namespace geos::operation 00098 } // namespace geos 00099 00100 #endif // ifndef GEOS_OP_PREDICATE_SEGMENTINTERSECTIONTESTER_H