Topology.h

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/******************************************************************************
*       SOFA, Simulation Open-Framework Architecture, version 1.0 beta 3      *
*                (c) 2006-2008 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                             *
******************************************************************************/
#ifndef SOFA_CORE_COMPONENTMODEL_TOPOLOGY_TOPOLOGY_H
#define SOFA_CORE_COMPONENTMODEL_TOPOLOGY_TOPOLOGY_H

#include <stdlib.h>
#include <string>
#include <iostream>
#include <sofa/core/objectmodel/BaseObject.h>

#include <sofa/helper/vector.h>
namespace sofa
{

namespace core
{

namespace componentmodel
{

namespace topology
{

    enum TopologyChangeType 
    {
        BASE,               
        ENDING_EVENT,       
        POINTSINDICESSWAP,  
        POINTSADDED,        
        POINTSREMOVED,      
        POINTSRENUMBERING,  
        EDGESADDED,         
        EDGESREMOVED,       
        EDGESRENUMBERING,    
        TRIANGLESADDED,     
        TRIANGLESREMOVED,   
        TRIANGLESRENUMBERING, 
        TETRAHEDRAADDED,     
        TETRAHEDRAREMOVED,   
        TETRAHEDRARENUMBERING, 

        QUADSADDED,     
        QUADSREMOVED,   
        QUADSRENUMBERING, 
        HEXAHEDRAADDED,     
        HEXAHEDRAREMOVED,   
        HEXAHEDRARENUMBERING 
    };


    class TopologyChange 
    {
    public:
        virtual ~TopologyChange() {};

        TopologyChangeType getChangeType() const { return m_changeType;}

    protected:
        TopologyChange( TopologyChangeType changeType = BASE )
        : m_changeType(changeType) 
        {}

        TopologyChangeType m_changeType; 
    }; 

    class EndingEvent : public core::componentmodel::topology::TopologyChange  
    {
    public:
        EndingEvent() 
        : core::componentmodel::topology::TopologyChange(core::componentmodel::topology::ENDING_EVENT) 
        {}
    };


    class Topology : public virtual core::objectmodel::BaseObject
    {
    public:
        virtual ~Topology() 
        {}

        // Access to embedded position information (in case the topology is a regular grid for instance)
        // This is not very clean and is quit slow but it should only be used during initialization

        virtual bool hasPos() const { return false; }
        virtual int getNbPoints() const { return 0; }
        virtual void setNbPoints(int /*n*/){}
        virtual double getPX(int /*i*/) const { return 0.0; }
        virtual double getPY(int /*i*/) const { return 0.0; }
        virtual double getPZ(int /*i*/) const { return 0.0; }
    };

} // namespace topology

} // namespace componentmodel

} // namespace core

} // namespace sofa

#endif