/**********************************************************************

 *

 * GEOS - Geometry Engine Open Source

 * http://geos.osgeo.org

 *

 * Copyright (C) 2019 Daniel Baston

 *

 * This is free software; you can redistribute and/or modify it under

 * the terms of the GNU Lesser General Licence as published

 * by the Free Software Foundation.

 * See the COPYING file for more information.

 *

 **********************************************************************/

#pragma once

#include <geos/triangulate/quadedge/QuadEdge.h>

namespace geos {

namespace triangulate {

namespace quadedge {

class GEOS_DLL QuadEdgeQuartet {

public:

    QuadEdgeQuartet() : e{{QuadEdge(0), QuadEdge(1), QuadEdge(2), QuadEdge(3)}} {

        e[0].next = &(e[0]);

        e[1].next = &(e[3]);

        e[2].next = &(e[2]);

        e[3].next = &(e[1]);

    };

    static QuadEdge& makeEdge(const Vertex& o, const Vertex & d, std::deque<QuadEdgeQuartet> & edges) {

        edges.emplace_back();

        auto& qe = edges.back();

        qe.base().setOrig(o);

        qe.base().setDest(d);

        return qe.base();

    }

    QuadEdge& base() {

        return e[0];

    }

    const QuadEdge& base() const {

        return e[0];

    }

    void setVisited(bool status) {

        for (auto& edge : e) {

            edge.setVisited(status);

        }

    }

private:

    std::array<QuadEdge, 4> e;

};

}

}

}