/******************************************************************************
*       SOFA, Simulation Open-Framework Architecture, development version     *
*                (c) 2006-2017 INRIA, USTL, UJF, CNRS, MGH                    *
*                                                                             *
* This program 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 program 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 program. If not, see <http://www.gnu.org/licenses/>.        *
*******************************************************************************
* Authors: The SOFA Team and external contributors (see Authors.txt)          *
*                                                                             *
* Contact information: contact@sofa-framework.org                             *
******************************************************************************/
#ifndef SOFA_COMPONENT_ENGINE_POINTSFROMINDICES_H
#define SOFA_COMPONENT_ENGINE_POINTSFROMINDICES_H
#include "config.h"

#if !defined(__GNUC__) || (__GNUC__ > 3 || (_GNUC__ == 3 && __GNUC_MINOR__ > 3))
#pragma once
#endif

#include <sofa/defaulttype/Vec.h>
#include <sofa/core/DataEngine.h>
#include <sofa/core/objectmodel/BaseObject.h>
#include <sofa/core/behavior/MechanicalState.h>
#include <sofa/core/topology/BaseMeshTopology.h>

namespace sofa
{

namespace component
{

namespace engine
{

/**
 * This class returns the points given a list of indices.
 */
template <class DataTypes>
class PointsFromIndices : public core::DataEngine
{
public:
    SOFA_CLASS(SOFA_TEMPLATE(PointsFromIndices,DataTypes),core::DataEngine);
    typedef typename DataTypes::Coord Coord;
    typedef typename DataTypes::VecCoord VecCoord;
    typedef core::topology::BaseMeshTopology::SetIndex SetIndex;

protected:

    PointsFromIndices();

    ~PointsFromIndices() {}
public:
    void init();

    void reinit();

    void update();

    /// Pre-construction check method called by ObjectFactory.
    /// Check that DataTypes matches the MechanicalState.
    template<class T>
    static bool canCreate(T*& obj, core::objectmodel::BaseContext* context, core::objectmodel::BaseObjectDescription* arg)
    {
        //if (dynamic_cast<MechanicalState<DataTypes>*>(context->getMechanicalState()) == NULL)
        //    return false;
        return BaseObject::canCreate(obj, context, arg);
    }

    /// Construction method called by ObjectFactory.
    template<class T>
    static typename T::SPtr create(T* tObj, core::objectmodel::BaseContext* context, core::objectmodel::BaseObjectDescription* arg)
    {
        return core::objectmodel::BaseObject::create(tObj, context, arg);
    }

    virtual std::string getTemplateName() const
    {
        return templateName(this);
    }

    static std::string templateName(const PointsFromIndices<DataTypes>* = NULL)
    {
        return DataTypes::Name();
    }

    Data<VecCoord> f_X;
    Data<SetIndex> f_indices;
    Data<VecCoord> f_indices_position;

private:
    bool contains(VecCoord& v, Coord c);
};

#if defined(SOFA_EXTERN_TEMPLATE) && !defined(SOFA_COMPONENT_ENGINE_POINTSFROMINDICES_CPP)
#ifndef SOFA_FLOAT
extern template class SOFA_GENERAL_ENGINE_API PointsFromIndices<defaulttype::Vec3dTypes>;
#endif //SOFA_FLOAT
#ifndef SOFA_DOUBLE
extern template class SOFA_GENERAL_ENGINE_API PointsFromIndices<defaulttype::Vec3fTypes>;
#endif //SOFA_DOUBLE
#endif

} // namespace engine

} // namespace component

} // namespace sofa

#endif
