TopologyPredicate.h

/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (c) 2024 Martin Davis
 * Copyright (C) 2024 Paul Ramsey <pramsey@cleverelephant.ca>
 *
 * 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.
 *
 **********************************************************************/
 
#pragma once
 
#include <geos/geom/Location.h>
#include <geos/export.h>
 
#include <ostream> // for operator<<
#include <string>
 
// Forward declarations
namespace geos {
namespace geom {
    class Envelope;
}
}
 
 
using geos::geom::Envelope;
using geos::geom::Location;
 
 
namespace geos {      // geos.
namespace operation { // geos.operation
namespace relateng {  // geos.operation.relateng
 
 
class GEOS_DLL TopologyPredicate {
 
public:
 
    /* Virtual destructor to ensure proper cleanup of derived classes */
    virtual ~TopologyPredicate() {};
 
    virtual std::string name() const = 0;
 
    virtual void finish() = 0;
 
    virtual bool isKnown() const = 0;
 
    virtual bool value() const = 0;
 
    virtual bool requireSelfNoding() const {
        return true;
    };
 
    virtual bool requireInteraction() const {
        return true;
    };
 
    virtual bool requireCovers(bool isSourceA) {
        (void)isSourceA;
        return false;
    }
 
    virtual bool requireExteriorCheck(bool isSourceA) const {
        (void)isSourceA;
        return true;
    }
 
    virtual void init(int dimA, int dimB) {
        (void)dimA;
        (void)dimB;
    };
 
    virtual void init(const Envelope& envA, const Envelope& envB)
    {
        //-- default if envelopes provide no information
        (void)envA;
        (void)envB;
    };
 
    virtual void updateDimension(Location locA, Location locB, int dimension) = 0;
 
 
    friend std::ostream&
    operator<<(std::ostream& os, const TopologyPredicate& ns)
    {
        os << ns.name();
        return os;
    }
 
};
 
} // namespace geos.operation.relateng
} // namespace geos.operation
} // namespace geos