SimpleSnapRounder.h

00001 /**********************************************************************
00002  *
00003  * GEOS - Geometry Engine Open Source
00004  * http://geos.osgeo.org
00005  *
00006  * Copyright (C) 2006      Refractions Research Inc.
00007  *
00008  * This is free software; you can redistribute and/or modify it under
00009  * the terms of the GNU Lesser General Public Licence as published
00010  * by the Free Software Foundation. 
00011  * See the COPYING file for more information.
00012  *
00013  **********************************************************************
00014  *
00015  * Last port: noding/snapround/SimpleSnapRounder.java r320 (JTS-1.12)
00016  *
00017  **********************************************************************/
00018 
00019 #ifndef GEOS_NODING_SNAPROUND_SIMPLESNAPROUNDER_H
00020 #define GEOS_NODING_SNAPROUND_SIMPLESNAPROUNDER_H
00021 
00022 #include <geos/export.h>
00023 
00024 #include <vector>
00025 
00026 #include <geos/inline.h>
00027 
00028 #include <geos/noding/Noder.h> // for inheritance
00029 #include <geos/algorithm/LineIntersector.h> // for composition
00030 #include <geos/geom/Coordinate.h> // for use in vector
00031 #include <geos/geom/PrecisionModel.h> // for inlines (should drop)
00032 
00033 // Forward declarations
00034 namespace geos {
00035         namespace geom {
00036                 //class PrecisionModel;
00037         }
00038         namespace algorithm {
00039                 class LineIntersector;
00040         }
00041         namespace noding {
00042                 class SegmentString;
00043                 class NodedSegmentString;
00044                 namespace snapround {
00045                         class HotPixel;
00046                 }
00047         }
00048 }
00049 
00050 namespace geos {
00051 namespace noding { // geos::noding
00052 namespace snapround { // geos::noding::snapround
00053 
00073 class GEOS_DLL SimpleSnapRounder: public Noder { // implements NoderIface
00074 
00075 public:
00076 
00077         SimpleSnapRounder(const geom::PrecisionModel& newPm);
00078 
00079         std::vector<SegmentString*>* getNodedSubstrings() const;
00080 
00081         void computeNodes(std::vector<SegmentString*>* inputSegmentStrings);
00082 
00083         void add(const SegmentString* segStr);
00084 
00092         void computeVertexSnaps(const std::vector<SegmentString*>& edges);
00093 
00094 private:
00095 
00096         const geom::PrecisionModel& pm;
00097         algorithm::LineIntersector li;
00098         double scaleFactor;
00099         std::vector<SegmentString*>* nodedSegStrings;
00100 
00101         void checkCorrectness(std::vector<SegmentString*>& inputSegmentStrings);
00102 
00103         void snapRound(std::vector<SegmentString*>* segStrings,
00104                         algorithm::LineIntersector& li);
00105 
00117         void findInteriorIntersections(std::vector<SegmentString*>& segStrings,
00118                         algorithm::LineIntersector& li, std::vector<geom::Coordinate>& ret);
00119 
00125         void computeSnaps(const std::vector<SegmentString*>& segStrings,
00126                 std::vector<geom::Coordinate>& snapPts);
00127 
00128         void computeSnaps(NodedSegmentString* ss, std::vector<geom::Coordinate>& snapPts);
00129 
00135         void computeVertexSnaps(NodedSegmentString* e0, NodedSegmentString* e1);
00136 
00137     // Declare type as noncopyable
00138     SimpleSnapRounder(const SimpleSnapRounder& other);
00139     SimpleSnapRounder& operator=(const SimpleSnapRounder& rhs);
00140 };
00141 
00142 } // namespace geos::noding::snapround
00143 } // namespace geos::noding
00144 } // namespace geos
00145 
00146 #endif // GEOS_NODING_SNAPROUND_SIMPLESNAPROUNDER_H

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