FixedConstraint.inl

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/******************************************************************************
*       SOFA, Simulation Open-Framework Architecture, version 1.0 beta 3      *
*                (c) 2006-2008 MGH, INRIA, USTL, UJF, CNRS                    *
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*                               SOFA :: Modules                               *
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#ifndef SOFA_COMPONENT_CONSTRAINT_FIXEDCONSTRAINT_INL
#define SOFA_COMPONENT_CONSTRAINT_FIXEDCONSTRAINT_INL

#include <sofa/core/componentmodel/topology/BaseMeshTopology.h>
#include <sofa/core/componentmodel/behavior/Constraint.inl>
#include <sofa/component/constraint/FixedConstraint.h>
#include <sofa/component/topology/PointSubset.h>

#include <sofa/helper/gl/template.h>
#include <sofa/defaulttype/RigidTypes.h>
#include <iostream>


using std::cerr;
using std::endl;

namespace sofa
{

namespace component
{

namespace constraint
{

using namespace core::componentmodel::topology;

using namespace sofa::defaulttype;
using namespace sofa::helper;
using namespace sofa::core::componentmodel::behavior;


// Define TestNewPointFunction
template< class DataTypes>
bool FixedConstraint<DataTypes>::FCTestNewPointFunction(int /*nbPoints*/, void* param, const sofa::helper::vector< unsigned int > &, const sofa::helper::vector< double >& )
{
    FixedConstraint<DataTypes> *fc= (FixedConstraint<DataTypes> *)param;
    if (fc) {
        return true;
    }else{
        return false;
    }
}

// Define RemovalFunction
template< class DataTypes>
void FixedConstraint<DataTypes>::FCRemovalFunction(int pointIndex, void* param)
{
    FixedConstraint<DataTypes> *fc= (FixedConstraint<DataTypes> *)param;
    if (fc) {
        fc->removeConstraint((unsigned int) pointIndex);
    }
    return;
} 

template <class DataTypes>
FixedConstraint<DataTypes>::FixedConstraint()
: core::componentmodel::behavior::Constraint<DataTypes>(NULL)
, f_indices( initData(&f_indices,"indices","Indices of the fixed points") )
, f_fixAll( initData(&f_fixAll,false,"fixAll","filter all the DOF to implement a fixed object") )
{
    // default to indice 0
    f_indices.beginEdit()->push_back(0);
    f_indices.endEdit();
}


// Handle topological changes
template <class DataTypes> void FixedConstraint<DataTypes>::handleTopologyChange()
{   
    std::list<const TopologyChange *>::const_iterator itBegin=topology->firstChange();
    std::list<const TopologyChange *>::const_iterator itEnd=topology->lastChange();

    f_indices.beginEdit()->handleTopologyEvents(itBegin,itEnd,this->getMState()->getSize());

}

template <class DataTypes>
FixedConstraint<DataTypes>::~FixedConstraint()
{
}

template <class DataTypes>
void FixedConstraint<DataTypes>::clearConstraints()
{
    f_indices.beginEdit()->clear();
    f_indices.endEdit();
}

template <class DataTypes>
void FixedConstraint<DataTypes>::addConstraint(unsigned int index)
{
    f_indices.beginEdit()->push_back(index);
    f_indices.endEdit();
}

template <class DataTypes>
void FixedConstraint<DataTypes>::removeConstraint(unsigned int index)
{
    removeValue(*f_indices.beginEdit(),index);
    f_indices.endEdit();
}

// -- Constraint interface


template <class DataTypes>
void FixedConstraint<DataTypes>::init()
{
    this->core::componentmodel::behavior::Constraint<DataTypes>::init();

    topology = getContext()->getMeshTopology();

    // Initialize functions and parameters
    topology::PointSubset my_subset = f_indices.getValue();

    my_subset.setTestFunction(FCTestNewPointFunction);
    my_subset.setRemovalFunction(FCRemovalFunction);

    my_subset.setTestParameter( (void *) this );
    my_subset.setRemovalParameter( (void *) this );

}

template <class DataTypes>
void FixedConstraint<DataTypes>::projectResponse(VecDeriv& res)
{
    const SetIndexArray & indices = f_indices.getValue().getArray();
  //std::cerr<<"FixedConstraint<DataTypes>::projectResponse, res.size()="<<res.size()<<endl;
    if( f_fixAll.getValue()==true ) {  // fix everyting
        for( unsigned i=0; i<res.size(); i++ )
            res[i] = Deriv();
    }
    else {
    for (SetIndexArray::const_iterator it = indices.begin();
        it != indices.end();
        ++it)
    {
        res[*it] = Deriv();
    }
    }
}

// Matrix Integration interface
template <class DataTypes>
void FixedConstraint<DataTypes>::applyConstraint(defaulttype::BaseMatrix *mat, unsigned int &offset)
{
    //std::cout << "applyConstraint in Matrix with offset = " << offset << std::endl;
    const unsigned int N = Deriv::size();
    const SetIndexArray & indices = f_indices.getValue().getArray();

    for (SetIndexArray::const_iterator it = indices.begin(); it != indices.end(); ++it)
    {
        // Reset Fixed Row and Col
        for (unsigned int c=0;c<N;++c)
            mat->clearRowCol(offset + N * (*it) + c);
        // Set Fixed Vertex
        for (unsigned int c=0;c<N;++c)
            mat->set(offset + N * (*it) + c, offset + N * (*it) + c, 1.0);
    }
}

template <class DataTypes>
void FixedConstraint<DataTypes>::applyConstraint(defaulttype::BaseVector *vect, unsigned int &offset)
{
    //std::cout << "applyConstraint in Vector with offset = " << offset << std::endl;
    const unsigned int N = Deriv::size();

    const SetIndexArray & indices = f_indices.getValue().getArray();
    for (SetIndexArray::const_iterator it = indices.begin(); it != indices.end(); ++it)
    {
        for (unsigned int c=0;c<N;++c)
            vect->clear(offset + N * (*it) + c);
    }
}


template <class DataTypes>
void FixedConstraint<DataTypes>::draw()
{
    if (!getContext()->
            getShowBehaviorModels()) return;
    const VecCoord& x = *this->mstate->getX();
    //std::cerr<<"FixedConstraint<DataTypes>::draw(), x.size() = "<<x.size()<<endl;
    glDisable (GL_LIGHTING);
    glPointSize(10);
    glColor4f (1,0.5,0.5,1);
    glBegin (GL_POINTS);
    const SetIndexArray & indices = f_indices.getValue().getArray();
    //std::cerr<<"FixedConstraint<DataTypes>::draw(), indices = "<<indices<<endl;
    if( f_fixAll.getValue()==true ) for (unsigned i=0; i<x.size(); i++ )
        {
        gl::glVertexT(x[i]);
        }
    else for (SetIndexArray::const_iterator it = indices.begin();
        it != indices.end();
        ++it)
        {
        gl::glVertexT(x[*it]);
        }
    glEnd();
}

// Specialization for rigids
#ifndef SOFA_FLOAT
template <>
    void FixedConstraint<Rigid3dTypes >::draw();
template <>
    void FixedConstraint<Rigid2dTypes >::draw();
#endif
#ifndef SOFA_DOUBLE
template <>
    void FixedConstraint<Rigid3fTypes >::draw();
template <>
    void FixedConstraint<Rigid2fTypes >::draw();
#endif



} // namespace constraint

} // namespace component

} // namespace sofa

#endif