SegmentIntersectionTester.h

00001 /**********************************************************************
00002  * $Id: SegmentIntersectionTester.h 1820 2006-09-06 16:54:23Z 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 #ifndef GEOS_OP_PREDICATE_SEGMENTINTERSECTIONTESTER_H
00017 #define GEOS_OP_PREDICATE_SEGMENTINTERSECTIONTESTER_H
00018 
00019 #include <geos/algorithm/LineIntersector.h> // for composition
00020 
00021 // Forward declarations
00022 namespace geos {
00023         namespace geom {
00024                 class LineString;
00025                 class CoordinateSequence;
00026         }
00027 }
00028 
00029 namespace geos {
00030 namespace operation { // geos::operation
00031 namespace predicate { // geos::operation::predicate
00032 
00043 class SegmentIntersectionTester {
00044 
00045 private:
00046 
00051         algorithm::LineIntersector li; // Robust
00052 
00053         bool hasIntersectionVar;
00054 
00055 public:
00056 
00057         SegmentIntersectionTester(): hasIntersectionVar(false) {}
00058 
00059         bool hasIntersectionWithLineStrings(const geom::CoordinateSequence &seq,
00060                 const std::vector<const geom::LineString *>& lines);
00061 
00062         bool hasIntersection(const geom::CoordinateSequence &seq0,
00063                 const geom::CoordinateSequence &seq1);
00064 
00065 
00066 };
00067 
00068 } // namespace geos::operation::predicate
00069 } // namespace geos::operation
00070 } // namespace geos
00071 
00072 #endif // ifndef GEOS_OP_PREDICATE_SEGMENTINTERSECTIONTESTER_H

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