IsSimpleOp.h

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/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2009      Sandro Santilli <strk@kbt.io>
 * Copyright (C) 2005-2006 Refractions Research Inc.
 * Copyright (C) 2001-2002 Vivid Solutions 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.
 *
 **********************************************************************
 *
 * Last port: operation/IsSimpleOp.java rev. 1.22 (JTS-1.10)
 *
 **********************************************************************/

#ifndef GEOS_OPERATION_ISSIMPLEOP_H
#define GEOS_OPERATION_ISSIMPLEOP_H

#include <geos/export.h>
#include <geos/geom/Coordinate.h> // for dtor visibility by unique_ptr (compos)

#include <map>
#include <memory> // for unique_ptr

#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
#endif

// Forward declarations
namespace geos {
namespace algorithm {
class BoundaryNodeRule;
}
namespace geom {
class LineString;
class LinearRing;
class MultiLineString;
class MultiPoint;
class Geometry;
class Polygon;
class GeometryCollection;
struct CoordinateLessThen;
}
namespace geomgraph {
class GeometryGraph;
}
namespace operation {
class EndpointInfo;
}
}


namespace geos {
namespace operation { // geos.operation

class GEOS_DLL IsSimpleOp {

public:

    IsSimpleOp();

    IsSimpleOp(const geom::Geometry& geom);

    IsSimpleOp(const geom::Geometry& geom,
               const algorithm::BoundaryNodeRule& boundaryNodeRule);

    bool isSimple();

    const geom::Coordinate*
    getNonSimpleLocation() const
    {
        return nonSimpleLocation.get();
    }

    bool isSimple(const geom::LineString* geom);

    bool isSimple(const geom::MultiLineString* geom);

    bool isSimple(const geom::MultiPoint* mp);

    bool isSimpleLinearGeometry(const geom::Geometry* geom);

private:

    bool hasNonEndpointIntersection(geomgraph::GeometryGraph& graph);

    bool hasClosedEndpointIntersection(geomgraph::GeometryGraph& graph);

    bool computeSimple(const geom::Geometry* geom);
    bool isSimplePolygonal(const geom::Geometry* geom);
    bool isSimpleGeometryCollection(const geom::GeometryCollection* col);

    void addEndpoint(std::map<const geom::Coordinate*, EndpointInfo*,
                     geom::CoordinateLessThen>& endPoints,
                     const geom::Coordinate* p, bool isClosed);

    bool isClosedEndpointsInInterior;

    bool isSimpleMultiPoint(const geom::MultiPoint& mp);

    const geom::Geometry* geom;

    std::unique_ptr<geom::Coordinate> nonSimpleLocation;
};

} // namespace geos.operation
} // namespace geos

#ifdef _MSC_VER
#pragma warning(pop)
#endif

#endif