ConnectedSubgraphFinder.h

/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2001-2002 Vivid Solutions Inc.
 * Copyright (C) 2005-2006 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.
 *
 **********************************************************************/
 
#pragma once
 
#include <geos/export.h>
#include <geos/planargraph/PlanarGraph.h> // for inlines
 
#include <stack>
#include <vector>
 
// Forward declarations
namespace geos {
namespace planargraph {
class PlanarGraph;
class Subgraph;
class Node;
}
}
 
namespace geos {
namespace planargraph { // geos::planargraph
namespace algorithm { // geos::planargraph::algorithm
 
class GEOS_DLL ConnectedSubgraphFinder {
public:
 
    ConnectedSubgraphFinder(PlanarGraph& newGraph)
        :
        graph(newGraph)
    {}
 
    void getConnectedSubgraphs(std::vector<Subgraph*>& dest);
 
private:
 
    PlanarGraph& graph;
 
    Subgraph* findSubgraph(Node* node);
 
 
    void addReachable(Node* node, Subgraph* subgraph);
 
    void addEdges(Node* node, std::stack<Node*>& nodeStack,
                  Subgraph* subgraph);
 
    // Declare type as noncopyable
    ConnectedSubgraphFinder(const ConnectedSubgraphFinder& other) = delete;
    ConnectedSubgraphFinder& operator=(const ConnectedSubgraphFinder& rhs) = delete;
};
 
} // namespace geos::planargraph::algorithm
} // namespace geos::planargraph
} // namespace geos