TopologyChangeVisitor.cpp

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/******************************************************************************
*       SOFA, Simulation Open-Framework Architecture, version 1.0 beta 3      *
*                (c) 2006-2008 MGH, INRIA, USTL, UJF, CNRS                    *
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* This library is free software; you can redistribute it and/or modify it     *
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*******************************************************************************
*                               SOFA :: Modules                               *
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* Authors: The SOFA Team and external contributors (see Authors.txt)          *
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#include <sofa/simulation/common/TopologyChangeVisitor.h>
#include <sofa/simulation/common/Node.h>
#include <sofa/core/componentmodel/topology/TopologicalMapping.h>

namespace sofa
{

namespace simulation
{


using namespace sofa::defaulttype;
using namespace sofa::core::componentmodel::behavior;

using namespace sofa::core::componentmodel::topology;

using namespace sofa::core;


void TopologyChangeVisitor::processTopologyChange(core::objectmodel::BaseObject* obj)
{
    obj->handleTopologyChange();
}

Visitor::Result TopologyChangeVisitor::processNodeTopDown(simulation::Node* node)
{
    bool is_TopologicalMapping = false;

    for (simulation::Node::ObjectIterator it = node->object.begin(); it != node->object.end(); ++it)
    {
        if (dynamic_cast<sofa::core::componentmodel::topology::TopologicalMapping*>(*it)!= NULL){ // find a TopologicalMapping node among the brothers (it must be the first one written)

            sofa::core::componentmodel::topology::TopologicalMapping* obj = dynamic_cast<sofa::core::componentmodel::topology::TopologicalMapping*>(*it);
            
            if(getNbIter() > 0){ // the propagation of topological changes comes (at least) from a father node, not from a brother

                obj->updateTopologicalMapping(); // update the specific TopologicalMapping
                is_TopologicalMapping = true;
            }
        }
    }

    if(is_TopologicalMapping){ // find one TopologicalMapping node among the brothers (which must be the first one written in the scene file)

        // Increment the number of iterations of the method processNodeTopDown
        incrNbIter();
        return RESULT_PRUNE; // stop the propagation of topological changes
    }

    for (simulation::Node::ObjectIterator it = node->object.begin(); it != node->object.end(); ++it)
    {
        this->processTopologyChange(*it);
    }

    // Increment the number of iterations of the method processNodeTopDown
    incrNbIter();
    return RESULT_CONTINUE;
}



} // namespace simulation

} // namespace sofa