b2degrees_of_freedom.H

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//------------------------------------------------------------------------
// b2degrees_of_freedom.H --
//
//
// written by Mathias Doreille
//
// Copyright (c) 2004-2012 SMR Engineering & Development SA
//                         2502 Bienne, Switzerland
//
// All Rights Reserved.  Proprietary source code.  The contents of
// this file may not be disclosed to third parties, copied or
// duplicated in any form, in whole or in part, without the prior
// written permission of SMR.
//------------------------------------------------------------------------
 
#ifndef __B2DEGREES_OF_FREEDOM_H__
#define __B2DEGREES_OF_FREEDOM_H__
 
#include <utility>
 
#include "utils/b2linear_algebra.H"
#include "utils/b2object.H"
 
namespace b2000 {
 
class DegreesOfFreedom : public Object {
public:
    virtual int get_number_of_dof() const { return 0; }
 
    virtual size_t set_global_dof_numbering(size_t index) { return index; }
 
    virtual std::pair<size_t, size_t> get_global_dof_numbering() const {
        return std::pair<size_t, size_t>(0, 0);
    }
 
    virtual size_t* get_global_dof_numbering(size_t* index) const {
        std::pair<size_t, size_t> dof_numbering = get_global_dof_numbering();
        while (dof_numbering.first != dof_numbering.second) { *index++ = dof_numbering.first++; }
        return index;
    }
 
    template <typename T>
    T* get_dof(const T* global_dof, T* local_dof) const {
        std::pair<size_t, size_t> dof_numbering = get_global_dof_numbering();
        return std::copy(
              global_dof + dof_numbering.first, global_dof + dof_numbering.second, local_dof);
    }
 
    struct ListDofField {
        std::map<std::string, size_t>& field_name;
        b2linalg::Index& index;
        void add(const std::string& name, std::pair<size_t, size_t> global_dof_numbering) {
            std::fill(
                  index.begin() + global_dof_numbering.first,
                  index.begin() + global_dof_numbering.second,
                  field_name.insert(std::pair<std::string, size_t>(name, field_name.size()))
                        .first->second);
        }
    };
 
    virtual void add_dof_field(ListDofField& ldfield) {
        ldfield.add("Unknown", get_global_dof_numbering());
    }
};
 
}  // namespace b2000
 
#endif