Ejemplo n.º 1
0
void GoRegionBoard::MergeAdjacentAndAddBlock(SgPoint move,
                                             SgBlackWhite capturedColor)
{
    SgVector<SgPoint> nb;
    for (GoNbIterator it(Board(), move); it; ++it)
        if (Board().IsEmpty(*it))
            nb.PushBack(*it);

    SgVectorOf<GoBlock> captures;
    PreviousBlocksAt(nb, capturedColor, &captures);
    SG_ASSERT(captures.NonEmpty());

    SgPointSet captured;
    {for (SgVectorIteratorOf<GoBlock> it(captures); it; ++it)
        captured |= (*it)->Stones();
    }
    SgVectorOf<GoRegion> adj;
    const int size = Board().Size();
    RegionsAt(captured.Border(size), capturedColor, &adj);
    SG_ASSERT(adj.NonEmpty());
    GoRegion* r = MergeAll(adj, captured, capturedColor);
    SG_UNUSED(r);

    for (SgVectorIteratorOf<GoBlock> it(captures); it; ++it)
        RemoveBlock(*it, true, false);
        // don't remove from regions; already gone.
}
Ejemplo n.º 2
0
// improved by using recursive extension to find 2-conn paths.
bool GoRegion::Find2ConnForAllInterior(SgMiaiStrategy* miaiStrategy,
                                       SgVector<SgPoint>& usedLibs) const
{
    SgVector<SgMiaiPair> myStrategy;
    const int size = m_bd.Size();
    SgPointSet interior = AllInsideLibs();
    if (interior.IsEmpty())
    {
        return true;
    }
    //if (GetFlag(GO_REGION_SINGLE_BLOCK_BOUNDARY))
    {
        SgPointSet testSet = interior;
        SgPointSet originalLibs = testSet.Border(size) & Dep().Border(size)
                                & m_bd.AllEmpty() & Points();
        SgPointSet updateLibs = originalLibs;

        // now try to find miai-paths to remaining interior points recursively
        bool changed = true;
        while (changed)
        {
            changed = false;
            if (testSet.IsEmpty())
            {
                SgVector<SgPoint> jlibs;
                JointLibs(&jlibs);
                SgVector<SgPoint> ips;
                GetIPs(&ips);
                SgVector<SgMiaiPair> updateStrg;

                for (SgSetIterator it(interior); it; ++it)
                {
                    SgPoint p = *it;
                    SgPointSet s1;
                    s1.Include(p);
                    SgPointSet rest = s1.Border(size) & updateLibs;
                    if (! rest.IsEmpty())
                    {
                        for (SgVectorIterator<SgMiaiPair> it2(myStrategy);
                             it2; ++it2)
                        {
                            SgMiaiPair x = *it2;
                            if (   SgPointUtil::AreAdjacent(p, x.first)
                                && SgPointUtil::AreAdjacent(p, x.second)
                               )
                            {
                                if (ips.Contains(x.first))
                                {
                                    updateLibs.Include(x.first);
                                    usedLibs.Exclude(x.first);
                                    SgPoint t = rest.PointOf();
                                    x.first = t;
                                    updateLibs.Exclude(t);
                                    rest.Exclude(t);
                                    usedLibs.Include(t);
                                }
                                if (  ips.Contains(x.second)
                                   && ! rest.IsEmpty()
                                   )
                                {
                                    updateLibs.Include(x.second);
                                    usedLibs.Exclude(x.second);
                                    SgPoint t = rest.PointOf();
                                    x.second = t;
                                    updateLibs.Exclude(t);
                                    rest.Exclude(t);
                                    usedLibs.Include(t);
                                }
                                updateStrg.Include(x);
                            }
                        }
                    }
                }
                miaiStrategy->SetStrategy(updateStrg);
                /* */ return true; /* */
            }
            for (SgSetIterator it(interior); it; ++it)
            {
                SgMiaiPair miaiPair;
                if (Find2BestLibs(*it, updateLibs, testSet, &miaiPair))
                {
                    if (miaiPair.first == miaiPair.second)
                    {
                        SgDebug() <<"\nmiaipair are same: "
                                  << SgWritePoint(miaiPair.first)
                                  << SgWritePoint(miaiPair.second);
                        SgDebug() <<"\ncurrent region is:\n";
                        Points().Write(SgDebug(), size);
                        SG_ASSERT(false);
                    }
                    myStrategy.PushBack(miaiPair);
                    usedLibs.PushBack(miaiPair.first);
                    usedLibs.PushBack(miaiPair.second);
                    updateLibs.Exclude(miaiPair.first);
                    updateLibs.Exclude(miaiPair.second);
                    updateLibs.Include(*it);
                    testSet.Exclude(*it);
                    changed = true;
                }
            }
        } // while  loop for recursive finding
    }
    miaiStrategy->Clear();
    return false;
}