libsofa1-dev 1.0~beta4-6 / usr / include / sofa / component / topology / CenterPointTopologicalMapping.h

/******************************************************************************
*       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     *
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License *
* for more details.                                                           *
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* 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_CENTERPOINTTOPOLOGICALMAPPING_H
#define SOFA_COMPONENT_TOPOLOGY_CENTERPOINTTOPOLOGICALMAPPING_H

#include <sofa/core/BaseMapping.h>
#include <sofa/core/componentmodel/topology/TopologicalMapping.h>

namespace sofa
{
namespace component
{
namespace topology
{
using namespace sofa::defaulttype;
using namespace sofa::component::topology;
using namespace sofa::core::componentmodel::topology;
using namespace sofa::core;

/**
 * This class, called CenterPointTopologicalMapping, is a specific implementation of the interface TopologicalMapping where :
 *
 * INPUT TOPOLOGY = any MeshTopology
 * OUTPUT TOPOLOGY = A PointSetTopologie, as the boundary of the INPUT TOPOLOGY
 *
 * Each primitive in the input Topology will be mapped to a point in the output topology.
 *
 * CenterPointTopologicalMapping class is templated by the pair (INPUT TOPOLOGY, OUTPUT TOPOLOGY)
 *
*/

class CenterPointTopologicalMapping : public TopologicalMapping
{
public:
	/** \brief Constructor.
         *
	 * @param from the topology issuing TopologyChange objects (the "source").
	 * @param to   the topology for which the TopologyChange objects must be translated (the "target").
	 */
	CenterPointTopologicalMapping ( In* from=NULL, Out* to=NULL );

	/** \brief Destructor.
	 *
         * Does nothing.
         */
	virtual ~CenterPointTopologicalMapping(){};

	/** \brief Initializes the target BaseTopology from the source BaseTopology.
	 */
	virtual void init();

	/// Method called at each topological changes propagation which comes from the INPUT topology to adapt the OUTPUT topology :
	virtual void updateTopologicalMappingTopDown();

	/// Pre-construction check method called by ObjectFactory.
	///
	/// This implementation read the object1 and object2 attributes and check
	/// if they are compatible with the input and output topology types of this
	/// mapping.
	template<class T>
	static bool canCreate ( T*& obj, core::objectmodel::BaseContext* context, core::objectmodel::BaseObjectDescription* arg )
	{
		if ( arg->findObject ( arg->getAttribute ( "object1","../.." ) ) == NULL )
			context->serr << "Cannot create "<<className ( obj ) <<" as object1 is missing."<<context->sendl;
	
		if ( arg->findObject ( arg->getAttribute ( "object2",".." ) ) == NULL )
			context->serr << "Cannot create "<<className ( obj ) <<" as object2 is missing."<<context->sendl;

		if ( arg->findObject ( arg->getAttribute ( "object1","../.." ) ) == NULL || arg->findObject ( arg->getAttribute ( "object2",".." ) ) == NULL )
			return false;

		BaseMeshTopology* topoIn;
		BaseMeshTopology* topoOut;

		( dynamic_cast<sofa::core::objectmodel::BaseObject*> ( arg->findObject ( arg->getAttribute ( "object1","../.." ) ) ) )->getContext()->get ( topoIn );
		( dynamic_cast<sofa::core::objectmodel::BaseObject*> ( arg->findObject ( arg->getAttribute ( "object2",".." ) ) ) )->getContext()->get ( topoOut );

		if ( dynamic_cast<In*> ( topoIn ) == NULL )
			return false;

		if ( dynamic_cast<Out*> ( topoOut ) == NULL )
			return false;

		return BaseMapping::canCreate ( obj, context, arg );
	}

	/// Construction method called by ObjectFactory.
	///
	/// This implementation read the object1 and object2 attributes to
	/// find the input and output topologies of this mapping.
	template<class T>
	static void create ( T*& obj, core::objectmodel::BaseContext* context, core::objectmodel::BaseObjectDescription* arg )
	{
		BaseMeshTopology* topoIn=NULL;
		BaseMeshTopology* topoOut=NULL;
		if ( arg )
		{
			if ( arg->findObject ( arg->getAttribute ( "object1","../.." ) ) != NULL )
				( dynamic_cast<sofa::core::objectmodel::BaseObject*> ( arg->findObject ( arg->getAttribute ( "object1","../.." ) ) ) )->getContext()->get ( topoIn );

			if ( arg->findObject ( arg->getAttribute ( "object2",".." ) ) != NULL )
				( dynamic_cast<sofa::core::objectmodel::BaseObject*> ( arg->findObject ( arg->getAttribute ( "object2",".." ) ) ) )->getContext()->get ( topoOut );
		}
		obj = new T (
		    ( arg?dynamic_cast<In*> ( topoIn ) :NULL ),
		    ( arg?dynamic_cast<Out*> ( topoOut ) :NULL ) );

		if ( context ) context->addObject ( obj );

		if ( ( arg ) && ( arg->getAttribute ( "object1" ) ) )
		{
			obj->object1.setValue ( arg->getAttribute ( "object1" ) );
			arg->removeAttribute ( "object1" );
		}

		if ( ( arg ) && ( arg->getAttribute ( "object2" ) ) )
		{
			obj->object2.setValue ( arg->getAttribute ( "object2" ) );
			arg->removeAttribute ( "object2" );
		}

		if ( arg ) obj->parse ( arg );
	}

	virtual unsigned int getGlobIndex(unsigned int ind)
	{ 	
		return ind;
	}

	virtual unsigned int getFromIndex(unsigned int ind)
	{
		return ind;
	}

protected:
	Data< std::string > object1;
	Data< std::string > object2;
};

} // namespace topology
} // namespace component
} // namespace sofa

#endif