OCCT

// Copyright (c) 1999-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.

#include <IFGraph_ExternalSources.hxx>
#include <IFGraph_SCRoots.hxx>
#include <IFGraph_StrongComponants.hxx>
#include <Interface_Graph.hxx>
#include <Standard_Transient.hxx>

// #include <Interface_GraphContent.hxx>
IFGraph_SCRoots::IFGraph_SCRoots(const Interface_Graph& agraph, const bool whole)
    : IFGraph_StrongComponants(agraph, whole)
{
}

IFGraph_SCRoots::IFGraph_SCRoots(IFGraph_StrongComponants& subparts)
    : IFGraph_StrongComponants(subparts)
{
}

// Root StrongComponants of a given set
// We don't consider the possible remainder (it's another problem)
// We start from the fact that StrongComponants gives Components in the order of
// dependence, the first depending on nothing (the others, we don't know ...)

void IFGraph_SCRoots::Evaluate()
{
  IFGraph_StrongComponants complist(Model(), false);
  complist.GetFromIter(Loaded());
  //  Interface_Graph G(Model());
  Interface_Graph G(thegraph);
#ifdef OCCT_DEBUG
  std::cout << " SCRoots:" << std::endl;
#endif
  G.ResetStatus();
  for (complist.Start(); complist.More(); complist.Next())
  {
    occ::handle<Standard_Transient> ent = complist.FirstEntity();
    int                             num = G.EntityNumber(ent);
#ifdef OCCT_DEBUG
    std::cout << "   Iteration,num=" << num << (G.IsPresent(num) ? " Taken" : " To take")
              << std::endl;
#endif
    if (!G.IsPresent(num))
    { //  register for following
      G.GetFromEntity(ent, true);
      Interface_EntityIterator list = complist.Entities();
      AddPart();
      GetFromIter(list);
    }
  }
}

/*     what follows, it was something else: the SC that have no ExternalSource
    Interface_EntityIterator list = complist.Entities();
    IFGraph_ExternalSources  eval (Model());
    eval.GetFromIter(list);
    if (eval.IsEmpty()) {
      AddPart();
      GetFromIter(list);
    }
  }
}
*/