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BarycentricMapping.inl
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BarycentricMapping.inl
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/******************************************************************************
* SOFA, Simulation Open-Framework Architecture *
* (c) 2006 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 *
******************************************************************************/
#pragma once
#include <sofa/component/mapping/linear/BarycentricMapping.h>
#include <sofa/component/topology/container/grid/RegularGridTopology.h>
#include <sofa/component/topology/container/grid/SparseGridTopology.h>
#include <sofa/component/mapping/linear/BarycentricMappers/BarycentricMapperMeshTopology.h>
#include <sofa/component/mapping/linear/BarycentricMappers/BarycentricMapperRegularGridTopology.h>
#include <sofa/component/mapping/linear/BarycentricMappers/BarycentricMapperSparseGridTopology.h>
#include <sofa/component/mapping/linear/BarycentricMappers/BarycentricMapperEdgeSetTopology.h>
#include <sofa/component/mapping/linear/BarycentricMappers/BarycentricMapperTriangleSetTopology.h>
#include <sofa/component/mapping/linear/BarycentricMappers/BarycentricMapperQuadSetTopology.h>
#include <sofa/component/mapping/linear/BarycentricMappers/BarycentricMapperTetrahedronSetTopology.h>
#include <sofa/component/mapping/linear/BarycentricMappers/BarycentricMapperHexahedronSetTopology.h>
#include <sofa/linearalgebra/EigenSparseMatrix.h>
#include <sofa/core/visual/VisualParams.h>
#include <sofa/core/behavior/MechanicalState.h>
#include <sofa/type/vector.h>
#include <sofa/simulation/Simulation.h>
namespace sofa::component::mapping::linear
{
using namespace topology;
using sofa::type::Vec3;
using sofa::type::Matrix3;
using sofa::core::objectmodel::ComponentState;
using sofa::linearalgebra::EigenSparseMatrix;
typedef typename sofa::core::topology::BaseMeshTopology::Line Edge;
typedef typename sofa::core::topology::BaseMeshTopology::Edge Edge;
typedef typename sofa::core::topology::BaseMeshTopology::Triangle Triangle;
typedef typename sofa::core::topology::BaseMeshTopology::Quad Quad;
typedef typename sofa::core::topology::BaseMeshTopology::Tetra Tetra;
typedef typename sofa::core::topology::BaseMeshTopology::Tetrahedron Tetrahedron;
typedef typename sofa::core::topology::BaseMeshTopology::Hexa Hexa;
typedef typename sofa::core::topology::BaseMeshTopology::Hexahedron Hexahedron;
typedef typename sofa::core::topology::BaseMeshTopology::SeqLines SeqLines;
typedef typename sofa::core::topology::BaseMeshTopology::SeqEdges SeqEdges;
typedef typename sofa::core::topology::BaseMeshTopology::SeqTriangles SeqTriangles;
typedef typename sofa::core::topology::BaseMeshTopology::SeqQuads SeqQuads;
typedef typename sofa::core::topology::BaseMeshTopology::SeqTetrahedra SeqTetrahedra;
typedef typename sofa::core::topology::BaseMeshTopology::SeqHexahedra SeqHexahedra;
template <typename T, typename V>
static bool is_a(const V * topology) {
return dynamic_cast<const T *>(topology) != nullptr;
}
template <class TIn, class TOut>
BarycentricMapping<TIn, TOut>::BarycentricMapping(core::State<In>* from, core::State<Out>* to, typename Mapper::SPtr mapper)
: Inherit1 ( from, to )
, d_useRestPosition(core::objectmodel::Base::initData(&d_useRestPosition, false, "useRestPosition", "Use the rest position of the input and output models to initialize the mapping"))
, d_mapper(initLink("mapper","Internal mapper created depending on the type of topology"), mapper)
, d_input_topology(initLink("input_topology", "Input topology container (usually the surrounding domain)."))
, d_output_topology(initLink("output_topology", "Output topology container (usually the immersed domain)."))
{
if (mapper)
this->addSlave(mapper.get());
internalMatrix = new EigenSparseMatrix<InDataTypes, OutDataTypes>;
}
template <class TIn, class TOut>
BarycentricMapping<TIn, TOut>::BarycentricMapping (core::State<In>* from, core::State<Out>* to, BaseMeshTopology * input_topology )
: Inherit1 ( from, to )
, d_useRestPosition(core::objectmodel::Base::initData(&d_useRestPosition, false, "useRestPosition", "Use the rest position of the input and output models to initialize the mapping"))
, d_mapper (initLink("mapper","Internal mapper created depending on the type of topology"))
, d_input_topology(initLink("input_topology", "Input topology container (usually the surrounding domain)."))
, d_output_topology(initLink("output_topology", "Output topology container (usually the immersed domain)."))
{
if (input_topology) {
d_input_topology.set(input_topology);
populateTopologies();
createMapperFromTopology ();
}
internalMatrix = new EigenSparseMatrix<InDataTypes, OutDataTypes>;
}
template <class TIn, class TOut>
BarycentricMapping<TIn, TOut>::~BarycentricMapping()
{
delete internalMatrix;
}
template <class TIn, class TOut>
void BarycentricMapping<TIn, TOut>::populateTopologies()
{
if (! d_input_topology.get()) {
if (! this->fromModel) {
msg_error() << "No input mechanical state found. Consider setting the '" << this->fromModel.getName() << "' attribute.";
} else {
BaseMeshTopology * topology = nullptr;
this->fromModel->getContext()->get(topology);
if (topology) {
d_input_topology.set(topology);
} else {
msg_error() << "No input topology found. Consider setting the '" << d_input_topology.getName() << "' attribute. ";
}
}
}
if (! d_output_topology.get()) {
if (! this->toModel) {
msg_error() << "No output mechanical state found. Consider setting the '" << this->toModel.getName() << "' attribute.";
} else {
BaseMeshTopology * topology = nullptr;
this->toModel->getContext()->get(topology);
if (topology) {
d_output_topology.set(topology);
}
}
}
}
template <class TIn, class TOut>
void BarycentricMapping<TIn, TOut>::createMapperFromTopology ()
{
using sofa::core::behavior::BaseMechanicalState;
using sofa::core::topology::TopologyContainer;
using sofa::component::topology::container::grid::SparseGridTopology;
using RegularGridMapper = BarycentricMapperRegularGridTopology< InDataTypes, OutDataTypes >;
using SparseGridMapper = BarycentricMapperSparseGridTopology< InDataTypes, OutDataTypes >;
using MeshMapper = BarycentricMapperMeshTopology< InDataTypes, OutDataTypes >;
using HexahedronSetMapper = BarycentricMapperHexahedronSetTopology<InDataTypes, OutDataTypes>;
using TetrahedronSetMapper = BarycentricMapperTetrahedronSetTopology<InDataTypes, OutDataTypes>;
using QuadSetMapper = BarycentricMapperQuadSetTopology<InDataTypes, OutDataTypes>;
using TriangleSetMapper = BarycentricMapperTriangleSetTopology<InDataTypes, OutDataTypes>;
using EdgeSetMapper = BarycentricMapperEdgeSetTopology<InDataTypes, OutDataTypes>;
auto input_topology_container = d_input_topology.get();
auto output_topology_container = d_output_topology.get();
if (!input_topology_container)
return;
// Output topology container could be null, as most of the mappers do not need it.
d_mapper = nullptr;
RegularGridTopology* rgt = nullptr;
SparseGridTopology* sgt = nullptr;
// Regular Grid Topology
if (is_a<RegularGridTopology>(input_topology_container) ) {
rgt = dynamic_cast<RegularGridTopology*>(input_topology_container);
if (rgt->hasVolume()) {
msg_info() << "Creating RegularGridMapper";
d_mapper = sofa::core::objectmodel::New<RegularGridMapper>(rgt, output_topology_container);
}
goto end;
}
// Sparse Grid Topology
if (is_a<SparseGridTopology>(input_topology_container) ) {
sgt = dynamic_cast<SparseGridTopology*>(input_topology_container);
if (sgt->hasVolume()) {
msg_info() << "Creating SparseGridMapper";
d_mapper = sofa::core::objectmodel::New<SparseGridMapper>(sgt, output_topology_container);
}
goto end;
}
//TopologyContainer topologies
if(is_a<sofa::core::topology::TopologyContainer>(input_topology_container))
{
auto topoContainer = dynamic_cast<sofa::core::topology::TopologyContainer*>(input_topology_container);
// Hexahedron Topology
if (input_topology_container->getNbHexahedra() > 0) {
msg_info() << "Creating HexahedronSetMapper";
d_mapper = sofa::core::objectmodel::New<HexahedronSetMapper>(topoContainer, output_topology_container);
goto end;
}
// Tetrahedron Topology
if (input_topology_container->getNbTetrahedra() > 0) {
msg_info() << "Creating TetrahedronSetMapper";
d_mapper = sofa::core::objectmodel::New<TetrahedronSetMapper >(topoContainer, output_topology_container);
goto end;
}
// Quad Topology
if (input_topology_container->getNbQuads() > 0) {
msg_info() << "Creating QuadSetMapper";
d_mapper = sofa::core::objectmodel::New<QuadSetMapper >(topoContainer, output_topology_container);
goto end;
}
// Triangle Topology
if (input_topology_container->getNbTriangles() > 0) {
msg_info() << "Creating TriangleSetMapper";
d_mapper = sofa::core::objectmodel::New<TriangleSetMapper >(topoContainer, output_topology_container);
goto end;
}
// Edge Topology
if (input_topology_container->getNbEdges() > 0) {
msg_info() << "Creating EdgeSetMapper";
d_mapper = sofa::core::objectmodel::New<EdgeSetMapper >(topoContainer, output_topology_container);
goto end;
}
}
// Generic Mesh Topology
d_mapper = sofa::core::objectmodel::New<MeshMapper>(input_topology_container, output_topology_container);
end:
if (d_mapper)
{
this->addSlave(d_mapper.get());
}
}
template <class TIn, class TOut>
void BarycentricMapping<TIn, TOut>::init()
{
this->d_componentState.setValue(ComponentState::Invalid) ;
Inherit1::init();
populateTopologies();
if ( d_mapper == nullptr ) // try to create a mapper according to the topology of the In model
{
createMapperFromTopology ( );
}
if ( d_mapper == nullptr)
{
if (d_input_topology.get()) {
msg_error() << "No compatible input topology found. Make sure the input topology ('" << d_input_topology.getPath()
<< "') is a class derived from BaseMeshTopology.";
}
return;
}
if (!this->toModel)
return;
initMapper();
this->d_componentState.setValue(ComponentState::Valid) ;
}
template <class TIn, class TOut>
void BarycentricMapping<TIn, TOut>::reinit()
{
if ( d_mapper != nullptr )
{
d_mapper->clear();
initMapper();
}
}
template <class TIn, class TOut>
void BarycentricMapping<TIn, TOut>::initMapper()
{
if (d_mapper != nullptr && this->toModel != nullptr && this->fromModel != nullptr)
{
if (d_useRestPosition.getValue())
d_mapper->init (((const core::State<Out> *)this->toModel)->read(core::ConstVecCoordId::restPosition())->getValue(), ((const core::State<In> *)this->fromModel)->read(core::ConstVecCoordId::restPosition())->getValue() );
else
d_mapper->init (((const core::State<Out> *)this->toModel)->read(core::ConstVecCoordId::position())->getValue(), ((const core::State<In> *)this->fromModel)->read(core::ConstVecCoordId::position())->getValue() );
}
}
template <class TIn, class TOut>
void BarycentricMapping<TIn, TOut>::apply(const core::MechanicalParams * mparams, Data< typename Out::VecCoord >& out, const Data< typename In::VecCoord >& in)
{
SOFA_UNUSED(mparams);
if (d_mapper != nullptr)
{
d_mapper->resize( this->toModel );
d_mapper->apply(*out.beginWriteOnly(), in.getValue());
out.endEdit();
}
}
template <class TIn, class TOut>
void BarycentricMapping<TIn, TOut>::applyJ (const core::MechanicalParams * mparams, Data< typename Out::VecDeriv >& _out, const Data< typename In::VecDeriv >& in)
{
SOFA_UNUSED(mparams);
if (d_mapper != nullptr)
{
auto outWriteAccessor = sofa::helper::getWriteAccessor(_out);
d_mapper->applyJ(outWriteAccessor.wref(), in.getValue());
}
}
template <class TIn, class TOut>
void BarycentricMapping<TIn, TOut>::applyJT (const core::MechanicalParams * mparams, Data< typename In::VecDeriv >& out, const Data< typename Out::VecDeriv >& in)
{
SOFA_UNUSED(mparams);
if (d_mapper != nullptr)
{
auto outWriteAccessor = sofa::helper::getWriteAccessor(out);
d_mapper->applyJT(outWriteAccessor.wref(), in.getValue());
}
}
template <class TIn, class TOut>
const sofa::linearalgebra::BaseMatrix* BarycentricMapping<TIn, TOut>::getJ()
{
if (d_mapper!=nullptr )
{
const size_t outStateSize = this->toModel->getSize();
const size_t inStateSize = this->fromModel->getSize();
const sofa::linearalgebra::BaseMatrix* matJ = d_mapper->getJ((int)outStateSize, (int)inStateSize);
return matJ;
}
else
return nullptr;
}
template <class TIn, class TOut>
void BarycentricMapping<TIn, TOut>::draw(const core::visual::VisualParams* vparams)
{
if ( !vparams->displayFlags().getShowMappings() ) return;
if (this->d_componentState.getValue() != ComponentState::Valid ) return;
// Draw model (out) points
const OutVecCoord& out = this->toModel->read(core::ConstVecCoordId::position())->getValue();
std::vector< Vec3 > points;
for ( unsigned int i=0; i<out.size(); i++ )
{
points.push_back ( OutDataTypes::getCPos(out[i]) );
}
vparams->drawTool()->drawPoints ( points, 7, sofa::type::RGBAColor::yellow());
// Draw mapping line between models
const InVecCoord& in = this->fromModel->read(core::ConstVecCoordId::position())->getValue();
if ( d_mapper!=nullptr )
d_mapper->draw(vparams,out,in);
}
template <class TIn, class TOut>
void BarycentricMapping<TIn, TOut>::applyJT(const core::ConstraintParams * cparams, Data< typename In::MatrixDeriv >& out, const Data< typename Out::MatrixDeriv >& in)
{
SOFA_UNUSED(cparams);
if (d_mapper!=nullptr )
{
auto outWriteAccessor = sofa::helper::getWriteAccessor(out);
d_mapper->applyJT(outWriteAccessor.wref(), in.getValue());
}
}
template <class TIn, class TOut>
void BarycentricMapping<TIn, TOut>::handleTopologyChange ( core::topology::Topology* t )
{
//foward topological modifications to the mapper
if (this->d_mapper.get()){
this->d_mapper->processTopologicalChanges(((const core::State<Out> *)this->toModel)->read(core::ConstVecCoordId::position())->getValue(),
((const core::State<In> *)this->fromModel)->read(core::ConstVecCoordId::position())->getValue(),
t);
}
}
#ifdef BARYCENTRIC_MAPPER_TOPOCHANGE_REINIT
template <class In, class Out>
void BarycentricMapperTriangleSetTopology<In,Out>::handleTopologyChange(core::topology::Topology* t)
{
using core::topology::TopologyChange;
auto input_topology = d_input_topology.get();
auto output_topology = d_output_topology.get();
if (t != input_topology) return;
if ( input_topology->beginChange() == input_topology->endChange() )
return;
MechanicalState< In >* mStateFrom = nullptr;
MechanicalState< Out >* mStateTo = nullptr;
input_topology->getContext()->get(mStateFrom);
output_topology->getContext()->get(mStateTo);
if ((mStateFrom == nullptr) || (mStateTo == nullptr))
return;
const typename MechanicalState< In >::VecCoord& in = *(mStateFrom->getX0());
const typename MechanicalState< Out >::VecCoord& out = *(mStateTo->getX0());
for (std::list< const TopologyChange *>::const_iterator it = input_topology->beginChange(), itEnd = input_topology->endChange(); it != itEnd; ++it)
{
const core::topology::TopologyChangeType& changeType = (*it)->getChangeType();
switch ( changeType )
{
case core::topology::ENDING_EVENT :
{
const type::vector< topology::Triangle >& triangles = input_topology->getTriangles();
type::vector< Mat3x3d > bases;
type::vector< Vec3 > centers;
// clear and reserve space for 2D mapping
this->clear(out.size());
bases.resize(triangles.size());
centers.resize(triangles.size());
for ( unsigned int t = 0; t < triangles.size(); t++ )
{
Mat3x3d m,mt;
m[0] = in[triangles[t][1]]-in[triangles[t][0]];
m[1] = in[triangles[t][2]]-in[triangles[t][0]];
m[2] = cross ( m[0],m[1] );
mt.transpose ( m );
bases[t].invert ( mt );
centers[t] = ( in[triangles[t][0]]+in[triangles[t][1]]+in[triangles[t][2]] ) /3;
}
for ( unsigned int i=0; i<out.size(); i++ )
{
Vec3d pos = Out::getCPos(out[i]);
Vec3 coefs;
int index = -1;
double distance = 1e10;
for ( unsigned int t = 0; t < triangles.size(); t++ )
{
Vec3d v = bases[t] * ( pos - in[triangles[t][0]] );
double d = std::max ( std::max ( -v[0],-v[1] ),std::max ( ( v[2]<0?-v[2]:v[2] )-0.01,v[0]+v[1]-1 ) );
if ( d>0 ) d = ( pos-centers[t] ).norm2();
if ( d<distance ) { coefs = v; distance = d; index = t; }
}
this->addPointInTriangle ( index, coefs.ptr() );
}
break;
}
default:
break;
}
}
}
#endif // BARYCENTRIC_MAPPER_TOPOCHANGE_REINIT
template<class TIn, class TOut>
const type::vector< linearalgebra::BaseMatrix*>* BarycentricMapping<TIn, TOut>::getJs()
{
typedef typename Mapper::MatrixType mat_type;
const sofa::linearalgebra::BaseMatrix* matJ = getJ();
const auto * mat = dynamic_cast<const mat_type*>(matJ);
if(mat==nullptr)
throw std::runtime_error("Unable to downcast the matrix");
static_cast<EigenSparseMatrix<InDataTypes, OutDataTypes>*>(internalMatrix)->copyFrom(*mat);
js.resize( 1 );
js[0] = internalMatrix;
return &js;
}
} // namespace sofa::component::mapping::linear