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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_MAPPING_SKINNINGMAPPING_H
#define SOFA_COMPONENT_MAPPING_SKINNINGMAPPING_H

#include <sofa/core/componentmodel/behavior/MechanicalMapping.h>
#include <sofa/core/componentmodel/behavior/MechanicalState.h>

#include <sofa/defaulttype/RigidTypes.h>
#include <sofa/defaulttype/VecTypes.h>
#include <sofa/core/componentmodel/behavior/MappedModel.h>
#include <vector>
#include <sofa/component/component.h>
namespace sofa
{

  namespace component
  {

    namespace mapping
    {

      typedef enum {
        WEIGHT_LINEAR, WEIGHT_INVDIST, WEIGHT_HERMITE
      } WeightingType;

      typedef enum {
        INTERPOLATION_LINEAR, INTERPOLATION_DUAL_QUATERNION
      } InterpolationType;

      template <class BasicMapping>
      class SkinningMapping : public BasicMapping, public virtual core::objectmodel::BaseObject
      {
        public:
          typedef BasicMapping Inherit;
          typedef typename Inherit::In In;
          typedef typename Inherit::Out Out;
          typedef typename Out::VecCoord VecCoord;
          typedef typename Out::VecDeriv VecDeriv;
          typedef typename Out::Coord Coord;
          typedef typename Out::Deriv Deriv;
          typedef typename std::map<unsigned int, Deriv>::const_iterator OutConstraintIterator;
    
          typedef typename In::Coord InCoord;
          typedef typename In::Deriv InDeriv;
          typedef typename In::VecCoord VecInCoord;
          typedef typename Coord::value_type Real;
          enum { N=Coord::static_size };
          typedef defaulttype::Mat<N,N,Real> Mat;

        protected:
          sofa::helper::vector<InCoord> initPosDOFs; // translation and rotation of the blended reference frame i, where i=0..n.
          sofa::helper::vector<Coord> initPos; // pos: point coord in  the reference frame i, where i=0..n ( + 1 for the blended reference frame)
          sofa::helper::vector<Coord> initBlendedPos; // pos: point coord in  the blended reference frames, where i=0..n ( + 1 for the blended reference frame)
          sofa::helper::vector<Coord> rotatedPoints;

          Data<sofa::helper::vector<unsigned int> > repartition;
          Data<sofa::helper::vector<double> >  coefs;
          Data<unsigned int> nbRefs;

          bool computeWeights;
          WeightingType wheighting;
          InterpolationType interpolation;

          class Loader;
          void load ( const char* filename );
          inline void computeInitPos();
          inline void sortReferences();

        public:
          SkinningMapping ( In* from, Out* to );
          virtual ~SkinningMapping();

          void init();
          void parse ( core::objectmodel::BaseObjectDescription* arg );

          void apply ( typename Out::VecCoord& out, const typename In::VecCoord& in );
          void applyJ ( typename Out::VecDeriv& out, const typename In::VecDeriv& in );
          void applyJT ( typename In::VecDeriv& out, const typename Out::VecDeriv& in );
          void applyJT ( typename In::VecConst& out, const typename Out::VecConst& in );

          void draw();
          void clear();

          // Weights
          void setWeightsToHermite();
          void setWieghtsToInvDist();
          void setWeightsToLinear();
          inline void updateWeights();

          // Interpolations
          void setInterpolationToLinear();
          void setInterpolationToDualQuaternion();

          // Accessors
          void setNbRefs ( unsigned int nb ) { nbRefs.setValue ( nb ); }
          void setWeightCoefs ( sofa::helper::vector<double> &weights );
          void setRepartition ( sofa::helper::vector<unsigned int> &rep );
          void setComputeWeights ( bool val ) {computeWeights=val;}
          unsigned int getNbRefs() { return nbRefs.getValue(); }
          const sofa::helper::vector<double>& getWeightCoefs() { return coefs.getValue(); }
          const sofa::helper::vector<unsigned int>& getRepartition() { return repartition.getValue(); }
          bool getComputeWeights() { return computeWeights; }
      };

using core::Mapping;
using core::componentmodel::behavior::MechanicalMapping;
using core::componentmodel::behavior::MappedModel;
using core::componentmodel::behavior::State;
using core::componentmodel::behavior::MechanicalState;

using sofa::defaulttype::Vec2dTypes;
using sofa::defaulttype::Vec3dTypes;
using sofa::defaulttype::Vec2fTypes;
using sofa::defaulttype::Vec3fTypes;
using sofa::defaulttype::ExtVec2fTypes;
using sofa::defaulttype::ExtVec3fTypes;
using sofa::defaulttype::Rigid2dTypes;
using sofa::defaulttype::Rigid3dTypes;
using sofa::defaulttype::Rigid2fTypes;
using sofa::defaulttype::Rigid3fTypes;

#if defined(WIN32) && !defined(SOFA_COMPONENT_MAPPING_SKINNINGMAPPING_CPP)
#pragma warning(disable : 4231)
#ifndef SOFA_FLOAT
extern template class SOFA_COMPONENT_MAPPING_API SkinningMapping< MechanicalMapping< MechanicalState<Rigid3dTypes>, MechanicalState<Vec3dTypes> > >;
extern template class SOFA_COMPONENT_MAPPING_API SkinningMapping< Mapping< State<Rigid3dTypes>, MappedModel<Vec3dTypes> > >;
// template class SOFA_COMPONENT_MAPPING_API SkinningMapping< Mapping< State<Rigid3dTypes>, MappedModel<ExtVec3dTypes> > >;
extern template class SOFA_COMPONENT_MAPPING_API SkinningMapping< Mapping< State<Rigid3dTypes>, MappedModel<ExtVec3fTypes> > >;
#endif
#ifndef SOFA_DOUBLE
extern template class SOFA_COMPONENT_MAPPING_API SkinningMapping< MechanicalMapping< MechanicalState<Rigid3fTypes>, MechanicalState<Vec3fTypes> > >;
extern template class SOFA_COMPONENT_MAPPING_API SkinningMapping< Mapping< State<Rigid3fTypes>, MappedModel<Vec3fTypes> > >;
// template class SOFA_COMPONENT_MAPPING_API SkinningMapping< Mapping< State<Rigid3fTypes>, MappedModel<ExtVec3dTypes> > >;
extern template class SOFA_COMPONENT_MAPPING_API SkinningMapping< Mapping< State<Rigid3fTypes>, MappedModel<ExtVec3fTypes> > >;
#endif
#ifndef SOFA_FLOAT
#ifndef SOFA_DOUBLE
extern template class SOFA_COMPONENT_MAPPING_API SkinningMapping< MechanicalMapping< MechanicalState<Rigid3dTypes>, MechanicalState<Vec3fTypes> > >;
extern template class SOFA_COMPONENT_MAPPING_API SkinningMapping< MechanicalMapping< MechanicalState<Rigid3fTypes>, MechanicalState<Vec3dTypes> > >;
extern template class SOFA_COMPONENT_MAPPING_API SkinningMapping< Mapping< State<Rigid3dTypes>, MappedModel<Vec3fTypes> > >;
extern template class SOFA_COMPONENT_MAPPING_API SkinningMapping< Mapping< State<Rigid3fTypes>, MappedModel<Vec3dTypes> > >;
#endif
#endif
#endif




    } // namespace mapping

  } // namespace component

} // namespace sofa

#endif