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SegmentIntersectionTester.h

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

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