/********************************************************************** * $Id: operation.h,v 1.3.2.1 2005/05/23 18:16:40 strk Exp $ * * GEOS - Geometry Engine Open Source * http://geos.refractions.net * * Copyright (C) 2001-2002 Vivid Solutions Inc. * Copyright (C) 2005 Refractions Research Inc. * * This is free software; you can redistribute and/or modify it under * the terms of the GNU Lesser General Public Licence as published * by the Free Software Foundation.  * See the COPYING file for more information. * **********************************************************************/#ifndef GEOS_OPERATION_H#define GEOS_OPERATION_H#include <memory>#include <vector>#include <map>#include <geos/platform.h>#include <geos/geomgraph.h>#include <geos/geom.h>#include <geos/geosAlgorithm.h>using namespace std;namespace geos {/* * \brief * The base class for operations that require GeometryGraph */class GeometryGraphOperation {friend class Unload;public:	GeometryGraphOperation(const Geometry *g0,const Geometry *g1);	GeometryGraphOperation(const Geometry *g0);	virtual ~GeometryGraphOperation();	const Geometry* getArgGeometry(int i) const;protected:	static CGAlgorithms *cga;	static LineIntersector *li;	const PrecisionModel* resultPrecisionModel;	/*	 * The operation args into an array so they can be accessed by index	 */	vector<GeometryGraph*> *arg;  // the arg(s) of the operation	void setComputationPrecision(const PrecisionModel* pm);};class EndpointInfo{public:	Coordinate pt;	bool isClosed;	int degree;    	EndpointInfo(const Coordinate& newPt);	void addEndpoint(bool newIsClosed);};/* * Tests whether a {@link Geometry} is simple. * Only {@link Geometry}s whose definition allows them * to be simple or non-simple are tested.  (E.g. Polygons must be simple * by definition, so no test is provided.  To test whether a given Polygon is valid, * use <code>Geometry#isValid</code>) * */class IsSimpleOp {public:	IsSimpleOp();	bool isSimple(const LineString *geom);	bool isSimple(const MultiLineString *geom);	bool isSimple(const MultiPoint *mp);	bool isSimpleLinearGeometry(const Geometry *geom);private:	bool hasNonEndpointIntersection(GeometryGraph *graph);	bool hasClosedEndpointIntersection(GeometryGraph *graph);	void addEndpoint(map<Coordinate,EndpointInfo*,CoordLT> *endPoints, const Coordinate& p,bool isClosed);};} // namespace geos#endif/********************************************************************** * $Log: operation.h,v $ * Revision 1.3.2.1  2005/05/23 18:16:40  strk * more math.h to cmath conversions * * Revision 1.3  2004/11/17 08:13:16  strk * Indentation changes. * Some Z_COMPUTATION activated by default. * * Revision 1.2  2004/07/19 13:19:31  strk * Documentation fixes * * Revision 1.1  2004/07/02 13:20:42  strk * Header files moved under geos/ dir. * * Revision 1.15  2004/03/29 06:59:25  ybychkov * "noding/snapround" package ported (JTS 1.4); * "operation", "operation/valid", "operation/relate" and "operation/overlay" upgraded to JTS 1.4; * "geom" partially upgraded. * * Revision 1.14  2004/03/19 09:48:46  ybychkov * "geomgraph" and "geomgraph/indexl" upgraded to JTS 1.4 * * Revision 1.13  2003/11/07 01:23:42  pramsey * Add standard CVS headers licence notices and copyrights to all cpp and h * files. * * **********************************************************************/