File: Intersection.cpp

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/******************************************************************************
*       SOFA, Simulation Open-Framework Architecture, version 1.0 beta 4      *
*                (c) 2006-2009 MGH, INRIA, USTL, UJF, CNRS                    *
*                                                                             *
* This library is free software; you can redistribute it and/or modify it     *
* under the terms of the GNU Lesser General Public License as published by    *
* the Free Software Foundation; either version 2.1 of the License, or (at     *
* your option) any later version.                                             *
*                                                                             *
* This library is distributed in the hope that it will be useful, but WITHOUT *
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or       *
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License *
* for more details.                                                           *
*                                                                             *
* You should have received a copy of the GNU Lesser General Public License    *
* along with this library; if not, write to the Free Software Foundation,     *
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA.          *
*******************************************************************************
*                              SOFA :: Framework                              *
*                                                                             *
* Authors: M. Adam, J. Allard, B. Andre, P-J. Bensoussan, S. Cotin, C. Duriez,*
* H. Delingette, F. Falipou, F. Faure, S. Fonteneau, L. Heigeas, C. Mendoza,  *
* M. Nesme, P. Neumann, J-P. de la Plata Alcade, F. Poyer and F. Roy          *
*                                                                             *
* Contact information: contact@sofa-framework.org                             *
******************************************************************************/
#include <sofa/core/componentmodel/collision/Intersection.inl>
#include <sofa/core/componentmodel/collision/DetectionOutput.h>
#include <sofa/helper/FnDispatcher.h>

namespace sofa
{

namespace core
{

namespace componentmodel
{

namespace collision
{

using namespace sofa::defaulttype;

helper::TypeInfo IntersectorMap::getType(core::CollisionModel* model)
{
	helper::TypeInfo t(typeid(*model));
	const std::map<helper::TypeInfo,helper::TypeInfo>::iterator it = castMap.find(t);
	if (it == castMap.end())
	{
		helper::TypeInfo t2 = t;
		for (std::set<const objectmodel::ClassInfo* >::iterator it = classes.begin(); it != classes.end(); ++it)
			if ((*it)->isInstance(model))
			{
				t2 = (*it)->type();
				break;
			}
		castMap.insert(std::make_pair(t,t2));
		return t2;
	}
	else return it->second;
}

ElementIntersector* IntersectorMap::get(core::CollisionModel* model1, core::CollisionModel* model2, bool& swapModels)
{
	helper::TypeInfo t1 = getType(model1);
	helper::TypeInfo t2 = getType(model2);
    iterator it =
        this->find(std::make_pair(t1,t2));
    if (it != this->end())
    {
        swapModels = false;
        return it->second;
    }
    
    it = this->find(std::make_pair(t2,t1));
    if (it != this->end())
    {
        swapModels = true;
        return it->second;
    }

    std::cerr << "ERROR: Element Intersector "
              << gettypename(t1) << "-"
              << gettypename(t2) << " NOT FOUND." << std::endl;
    (*this)[std::make_pair(t1,t2)] = NULL;
    return NULL;
}

Intersection::~Intersection()
{
}

/// Test if intersection between 2 types of elements is supported, i.e. an intersection test is implemented for this combinaison of types.
/// Note that this method is deprecated in favor of findIntersector
bool Intersection::isSupported(core::CollisionElementIterator elem1, core::CollisionElementIterator elem2)
{
    bool swap;
    ElementIntersector* i = findIntersector(elem1.getCollisionModel(), elem2.getCollisionModel(), swap);
    return i != NULL;
}

} // namespace collision

} // namespace componentmodel

} // namespace core

} // namespace sofa