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IsValidOp.h

00001 /**********************************************************************
00002  * $Id: IsValidOp.h 2942 2010-03-18 18:26:02Z strk $
00003  *
00004  * GEOS - Geometry Engine Open Source
00005  * http://geos.refractions.net
00006  *
00007  * Copyright (C) 2005-2006 Refractions Research Inc.
00008  * Copyright (C) 2001-2002 Vivid Solutions Inc.
00009  *
00010  * This is free software; you can redistribute and/or modify it under
00011  * the terms of the GNU Lesser General Public Licence as published
00012  * by the Free Software Foundation. 
00013  * See the COPYING file for more information.
00014  *
00015  **********************************************************************
00016  *
00017  * Last port: operation/valid/IsValidOp.java rev. 1.41 (JTS-1.10)
00018  *
00019  **********************************************************************/
00020 
00021 #ifndef GEOS_OP_ISVALIDOP_H
00022 #define GEOS_OP_ISVALIDOP_H
00023 
00024 #include <geos/export.h>
00025 
00026 #include <geos/operation/valid/TopologyValidationError.h> // for inlined destructor
00027 
00028 // Forward declarations
00029 namespace geos {
00030         namespace util {
00031                 class TopologyValidationError;
00032         }
00033         namespace geom {
00034                 class CoordinateSequence;
00035                 class GeometryFactory;
00036                 class Geometry;
00037                 class Point;
00038                 class LinearRing;
00039                 class LineString;
00040                 class Polygon;
00041                 class GeometryCollection;
00042                 class MultiPolygon;
00043                 class MultiLineString;
00044         }
00045         namespace geomgraph {
00046                 class DirectedEdge;
00047                 class EdgeIntersectionList;
00048                 class PlanarGraph;
00049                 class GeometryGraph;
00050         }
00051 }
00052 
00053 namespace geos {
00054 namespace operation { // geos::operation
00055 namespace valid { // geos::operation::valid
00056 
00061 class GEOS_DLL IsValidOp {
00062 friend class Unload;
00063 private:
00065         const geom::Geometry *parentGeometry; 
00066 
00067         bool isChecked;
00068 
00069         // CHECKME: should this really be a pointer ?
00070         TopologyValidationError* validErr;
00071 
00072         void checkValid();
00073         void checkValid(const geom::Geometry *g);
00074         void checkValid(const geom::Point *g);
00075         void checkValid(const geom::LinearRing *g);
00076         void checkValid(const geom::LineString *g);
00077         void checkValid(const geom::Polygon *g);
00078         void checkValid(const geom::MultiPolygon *g);
00079         void checkValid(const geom::GeometryCollection *gc);
00080         void checkConsistentArea(geomgraph::GeometryGraph *graph);
00081 
00082 
00091         void checkNoSelfIntersectingRings(geomgraph::GeometryGraph *graph);
00092 
00099         void checkNoSelfIntersectingRing(
00100                         geomgraph::EdgeIntersectionList &eiList);
00101 
00102         void checkTooFewPoints(geomgraph::GeometryGraph *graph);
00103 
00115         void checkHolesInShell(const geom::Polygon *p,
00116                         geomgraph::GeometryGraph *graph);
00117 
00130         void checkHolesNotNested(const geom::Polygon *p,
00131                         geomgraph::GeometryGraph *graph);
00132 
00147         void checkShellsNotNested(const geom::MultiPolygon *mp,
00148                         geomgraph::GeometryGraph *graph);
00149 
00161         void checkShellNotNested(const geom::LinearRing *shell,
00162                         const geom::Polygon *p,
00163                         geomgraph::GeometryGraph *graph);
00164 
00175         const geom::Coordinate *checkShellInsideHole(
00176                         const geom::LinearRing *shell,
00177                         const geom::LinearRing *hole,
00178                         geomgraph::GeometryGraph *graph);
00179 
00180         void checkConnectedInteriors(geomgraph::GeometryGraph &graph);
00181 
00182         void checkInvalidCoordinates(const geom::CoordinateSequence *cs);
00183 
00184         void checkInvalidCoordinates(const geom::Polygon *poly);
00185 
00186         void checkClosedRings(const geom::Polygon *poly);
00187 
00188         void checkClosedRing(const geom::LinearRing *ring);
00189 
00190         bool isSelfTouchingRingFormingHoleValid;
00191 
00192 public:
00199         static const geom::Coordinate *findPtNotNode(
00200                         const geom::CoordinateSequence *testCoords,
00201                         const geom::LinearRing *searchRing,
00202                         geomgraph::GeometryGraph *graph);
00203 
00212         static bool isValid(const geom::Coordinate &coord);
00213 
00214         IsValidOp(const geom::Geometry *geom)
00215                 :
00216                 parentGeometry(geom),
00217                 isChecked(false),
00218                 validErr(NULL),
00219                 isSelfTouchingRingFormingHoleValid(false)
00220         {}
00221 
00223         virtual ~IsValidOp() {
00224                 delete validErr;
00225         }
00226 
00227         bool isValid();
00228 
00229         TopologyValidationError* getValidationError();
00230 
00257         void setSelfTouchingRingFormingHoleValid(bool isValid)
00258         {
00259                 isSelfTouchingRingFormingHoleValid = isValid;
00260         }
00261 
00262 };
00263 
00264 } // namespace geos.operation.valid
00265 } // namespace geos.operation
00266 } // namespace geos
00267 
00268 #endif // GEOS_OP_ISVALIDOP_H
00269 
00270 /**********************************************************************
00271  * $Log$
00272  * Revision 1.2  2006/03/29 13:53:59  strk
00273  * EdgeRing equipped with Invariant testing function and lots of exceptional assertions. Removed useless heap allocations, and pointers usages.
00274  *
00275  * Revision 1.1  2006/03/20 16:57:44  strk
00276  * spatialindex.h and opValid.h headers split
00277  *
00278  **********************************************************************/
00279 

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