OverlayResultValidator.h

00001 /**********************************************************************
00002  * $Id: OverlayResultValidator.h 1941 2006-12-13 10:55:55Z strk $
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: operation/overlay/validate/OverlayResultValidator.java rev. 1.1
00017  * (we should move in GEOS too, probably)
00018  *
00019  **********************************************************************/
00020 
00021 #ifndef GEOS_OP_OVERLAY_OVERLAYRESULTVALIDATOR_H
00022 #define GEOS_OP_OVERLAY_OVERLAYRESULTVALIDATOR_H
00023 
00024 #include <geos/operation/overlay/OverlayOp.h> // for OpCode enum
00025 #include <geos/operation/overlay/FuzzyPointLocator.h> 
00026 #include <geos/geom/Location.h> // for Location::Value type
00027 
00028 #include <vector>
00029 
00030 // Forward declarations
00031 namespace geos {
00032         namespace geom {
00033                 class Geometry;
00034                 class Coordinate;
00035         }
00036 }
00037 
00038 namespace geos {
00039 namespace operation { // geos::operation
00040 namespace overlay { // geos::operation::overlay
00041 
00055 class OverlayResultValidator {
00056 
00057 public:
00058 
00059         static bool isValid(
00060                         const geom::Geometry& geom0,
00061                         const geom::Geometry& geom1,
00062                         OverlayOp::OpCode opCode,
00063                         const geom::Geometry& result);
00064 
00065         OverlayResultValidator(
00066                         const geom::Geometry& geom0,
00067                         const geom::Geometry& geom1,
00068                         const geom::Geometry& result);
00069 
00070         bool isValid(OverlayOp::OpCode opCode);
00071 
00072         geom::Coordinate& getInvalidLocation() {
00073                 return invalidLocation;
00074         }
00075 
00076 private:
00077 
00078         const geom::Geometry& g0;
00079 
00080         const geom::Geometry& g1;
00081 
00082         const geom::Geometry& gres;
00083 
00084         FuzzyPointLocator fpl0;
00085 
00086         FuzzyPointLocator fpl1;
00087 
00088         FuzzyPointLocator fplres;
00089 
00090         geom::Coordinate invalidLocation;
00091 
00092         static double _TOLERANCE; // 0.000001
00093         
00094         std::vector<geom::Coordinate> testCoords;
00095 
00096         void addTestPts(const geom::Geometry& g);
00097 
00098         void addVertices(const geom::Geometry& g);
00099 
00100         bool testValid(OverlayOp::OpCode overlayOp);
00101 
00102         bool testValid(OverlayOp::OpCode overlayOp, const geom::Coordinate& pt);
00103 
00104         bool isValidResult(OverlayOp::OpCode overlayOp,
00105                         std::vector<geom::Location::Value>& location);
00106 };
00107 
00108 } // namespace geos::operation::overlay
00109 } // namespace geos::operation
00110 } // namespace geos
00111 
00112 #endif // ndef GEOS_OP_OVERLAY_OVERLAYRESULTVALIDATOR_H
00113 
00114 /**********************************************************************
00115  * $Log$
00116  **********************************************************************/
00117 

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