# FastNodingValidator.h

    00001 /**********************************************************************
    00002  * $Id: SinglePassNoder.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  * Last port: noding/FastNodingValidator.java rev. ??? (JTS-1.8)
    00017  *
    00018  **********************************************************************/
    00019
    00020 #ifndef GEOS_NODING_FASTNODINGVALIDATOR_H
    00021 #define GEOS_NODING_FASTNODINGVALIDATOR_H
    00022
    00023 #include <geos/noding/SingleInteriorIntersectionFinder.h> // for composition
    00024 #include <geos/algorithm/LineIntersector.h> // for composition
    00025
    00026 #include <cassert>
    00027 #include <string>
    00028
    00029 // Forward declarations
    00030 namespace geos {
    00031         namespace noding {
    00032                 class SegmentString;
    00033         }
    00034 }
    00035
    00036 namespace geos {
    00037 namespace noding { // geos.noding
    00038
    00053 class FastNodingValidator
    00054 {
    00055
    00056 public:
    00057
    00058         FastNodingValidator(std::vector<noding::SegmentString*>& newSegStrings)
    00059                 :
    00060                 li(), // robust...
    00061                 segStrings(newSegStrings),
    00062                 segInt(),
    00063                 isValidVar(true)
    00064         {
    00065         }
    00066
    00073         bool isValid()
    00074         {
    00075                 execute();
    00076                 return isValidVar;
    00077         }
    00078
    00085         std::string getErrorMessage() const;
    00086
    00093         void checkValid();
    00094
    00095 private:
    00096
    00097         geos::algorithm::LineIntersector li;
    00098
    00099         std::vector<noding::SegmentString*>& segStrings;
    00100
    00101         std::auto_ptr<SingleInteriorIntersectionFinder> segInt;
    00102
    00103         bool isValidVar;
    00104
    00105         void execute()
    00106         {
    00107                 if (segInt.get() != NULL) return;
    00108                 checkInteriorIntersections();
    00109         }
    00110
    00111         void checkInteriorIntersections();
    00112
    00113
    00114 };
    00115
    00116 } // namespace geos.noding
    00117 } // namespace geos
    00118
    00119 #endif // GEOS_NODING_FASTNODINGVALIDATOR_H
    00120
    00121 /**********************************************************************
    00122  * $Log$
    00123  **********************************************************************/