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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 :: Modules                               *
*                                                                             *
* Authors: The SOFA Team and external contributors (see Authors.txt)          *
*                                                                             *
* Contact information: contact@sofa-framework.org                             *
******************************************************************************/
#ifndef SOFA_COMPONENT_TOPOLOGY_QUADSETTOPOLOGYMODIFIER_H
#define SOFA_COMPONENT_TOPOLOGY_QUADSETTOPOLOGYMODIFIER_H

#include <sofa/component/topology/EdgeSetTopologyModifier.h>

namespace sofa
{

namespace component
{

namespace topology
{
	class QuadSetTopologyContainer;
    
	using core::componentmodel::topology::BaseMeshTopology;
	typedef BaseMeshTopology::QuadID QuadID;
	typedef BaseMeshTopology::Quad Quad;
	typedef BaseMeshTopology::SeqQuads SeqQuads;
	typedef BaseMeshTopology::VertexQuads VertexQuads;
	typedef BaseMeshTopology::EdgeQuads EdgeQuads;
	typedef BaseMeshTopology::QuadEdges QuadEdges;
	
	/** 
	* A class that modifies the topology by adding and removing quads
	*/
	class SOFA_COMPONENT_CONTAINER_API QuadSetTopologyModifier : public EdgeSetTopologyModifier 
	{
	public:	
		QuadSetTopologyModifier()
		: EdgeSetTopologyModifier()
		{ }

		virtual ~QuadSetTopologyModifier() {}

		virtual void init();

		/** \brief Sends a message to warn that some quads were added in this topology.
		*
		* \sa addQuadsProcess
		*/
		void addQuadsWarning(const unsigned int nQuads,
			const sofa::helper::vector< Quad >& quadsList,
			const sofa::helper::vector< unsigned int >& quadsIndexList);

		/** \brief Sends a message to warn that some quads were added in this topology.
		*
		* \sa addQuadsProcess
		*/
		void addQuadsWarning(const unsigned int nQuads,
			const sofa::helper::vector< Quad >& quadsList,
			const sofa::helper::vector< unsigned int >& quadsIndexList,
			const sofa::helper::vector< sofa::helper::vector< unsigned int > > & ancestors,
			const sofa::helper::vector< sofa::helper::vector< double > >& baryCoefs);

		/** \brief Add a quad.
		*/
		void addQuadProcess(Quad e);

		/** \brief Actually Add some quads to this topology.
		* 
		* \sa addQuadsWarning
		*/
		virtual void addQuadsProcess(const sofa::helper::vector< Quad > &quads);

		/** \brief Sends a message to warn that some quads are about to be deleted.
		*
		* \sa removeQuadsProcess
		*
		* Important : parameter indices is not const because it is actually sorted from the highest index to the lowest one.
		*/
		virtual void removeQuadsWarning( sofa::helper::vector<unsigned int> &quads);

		/** \brief Remove a subset of  quads. Eventually remove isolated edges and vertices
		*
		* Important : some structures might need to be warned BEFORE the points are actually deleted, so always use method removeEdgesWarning before calling removeEdgesProcess.
		* \sa removeQuadsWarning
		*
		* @param removeIsolatedEdges if true isolated edges are also removed
		* @param removeIsolatedPoints if true isolated vertices are also removed
		*/
		virtual void removeQuadsProcess( const sofa::helper::vector<unsigned int> &indices, 
										const bool removeIsolatedEdges=false, 
										const bool removeIsolatedPoints=false);

		/** \brief Add some edges to this topology.
		* 
		* \sa addEdgesWarning
		*/
		void addEdgesProcess(const sofa::helper::vector< Edge > &edges);

		/** \brief Remove a subset of edges 
		*
		* Important : some structures might need to be warned BEFORE the points are actually deleted, so always use method removeEdgesWarning before calling removeEdgesProcess.
		* \sa removeEdgesWarning
		*
		* @param removeIsolatedItems if true isolated vertices are also removed
		* Important : parameter indices is not const because it is actually sorted from the highest index to the lowest one.
		*/
		virtual void removeEdgesProcess( const sofa::helper::vector<unsigned int> &indices,
										const bool removeIsolatedItems=false);

		/** \brief Add some points to this topology.
		*
		* \sa addPointsWarning
		*/
		virtual void addPointsProcess(const unsigned int nPoints);	

		/** \brief Remove a subset of points 
		*
		* Elements corresponding to these points are removed from the mechanical object's state vectors.
		*
		* Important : some structures might need to be warned BEFORE the points are actually deleted, so always use method removePointsWarning before calling removePointsProcess.
		* \sa removePointsWarning
		* Important : the points are actually deleted from the mechanical object's state vectors iff (removeDOF == true)
		*/
		virtual void removePointsProcess(sofa::helper::vector<unsigned int> &indices, 
										const bool removeDOF = true);

		/** \brief Reorder this topology.
		*
		* Important : the points are actually renumbered in the mechanical object's state vectors iff (renumberDOF == true)
		* \see MechanicalObject::renumberValues
		*/
		virtual void renumberPointsProcess( const sofa::helper::vector<unsigned int>& index, 
											const sofa::helper::vector<unsigned int>& inv_index, 
											const bool renumberDOF = true);	

		/** \brief Remove a set  of quads
		@param quads an array of quad indices to be removed (note that the array is not const since it needs to be sorted)
		*
		@param removeIsolatedEdges if true isolated edges are also removed
		@param removeIsolatedPoints if true isolated vertices are also removed
		*
		*/
		virtual void removeQuads(sofa::helper::vector< unsigned int >& quads, 
								const bool removeIsolatedEdges, 
								const bool removeIsolatedPoints);

		/** \brief Generic method to remove a list of items.
		*/
		virtual void removeItems(sofa::helper::vector< unsigned int >& items);

		/** \brief Generic method for points renumbering
		*/
		virtual void renumberPoints( const sofa::helper::vector<unsigned int>& index, 
									const sofa::helper::vector<unsigned int>& inv_index);


	private:
		QuadSetTopologyContainer* 	m_container;
	};

} // namespace topology

} // namespace component

} // namespace sofa

#endif