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Vector.h
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Wed, May 8, 23:10

Vector.h
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/* =================================================================================================
(c - GPLv3) T.W.J. de Geus (Tom) | tom@geus.me | www.geus.me | github.com/tdegeus/GooseFEM
================================================================================================= */
#ifndef GOOSEFEM_VECTOR_H
#define GOOSEFEM_VECTOR_H
// -------------------------------------------------------------------------------------------------
#include "GooseFEM.h"
// =========================================== GooseFEM ============================================
namespace GooseFEM {
// -------------------------------------------------------------------------------------------------
/*
"nodevec" - nodal vectors - [nnode, ndim]
"elemvec" - nodal vectors stored per element - [nelem, nne, ndim]
"dofval" - DOF values - [ndof]
*/
class Vector
{
public:
// constructor
Vector() = default;
Vector(const xt::xtensor<size_t,2> &conn, const xt::xtensor<size_t,2> &dofs);
// dimensions
size_t nelem() const; // number of elements
size_t nne() const; // number of nodes per element
size_t nnode() const; // number of nodes
size_t ndim() const; // number of dimensions
size_t ndof() const; // number of DOFs
// DOF lists
xt::xtensor<size_t,2> dofs() const; // DOFs
// convert to "dofval" (overwrite entries that occur more than once) -- (auto allocation below)
void asDofs(const xt::xtensor<double,2> &nodevec,
xt::xtensor<double,1> &dofval) const;
void asDofs(const xt::xtensor<double,3> &elemvec,
xt::xtensor<double,1> &dofval) const;
// convert to "nodevec" (overwrite entries that occur more than once) -- (auto allocation below)
void asNode(const xt::xtensor<double,1> &dofval,
xt::xtensor<double,2> &nodevec) const;
void asNode(const xt::xtensor<double,3> &elemvec,
xt::xtensor<double,2> &nodevec) const;
// convert to "elemvec" (overwrite entries that occur more than once) -- (auto allocation below)
void asElement(const xt::xtensor<double,1> &dofval,
xt::xtensor<double,3> &elemvec) const;
void asElement(const xt::xtensor<double,2> &nodevec,
xt::xtensor<double,3> &elemvec) const;
// assemble "dofval" (adds entries that occur more that once) -- (auto allocation below)
void assembleDofs(const xt::xtensor<double,2> &nodevec,
xt::xtensor<double,1> &dofval) const;
void assembleDofs(const xt::xtensor<double,3> &elemvec,
xt::xtensor<double,1> &dofval) const;
// assemble "nodevec" (adds entries that occur more that once) -- (auto allocation below)
void assembleNode(const xt::xtensor<double,3> &elemvec,
xt::xtensor<double,2> &nodevec) const;
// auto allocation of the functions above
xt::xtensor<double,1> asDofs(const xt::xtensor<double,2> &nodevec) const;
xt::xtensor<double,1> asDofs(const xt::xtensor<double,3> &elemvec) const;
xt::xtensor<double,2> asNode(const xt::xtensor<double,1> &dofval) const;
xt::xtensor<double,2> asNode(const xt::xtensor<double,3> &elemvec) const;
xt::xtensor<double,3> asElement(const xt::xtensor<double,1> &dofval) const;
xt::xtensor<double,3> asElement(const xt::xtensor<double,2> &nodevec) const;
xt::xtensor<double,1> assembleDofs(const xt::xtensor<double,2> &nodevec) const;
xt::xtensor<double,1> assembleDofs(const xt::xtensor<double,3> &elemvec) const;
xt::xtensor<double,2> assembleNode(const xt::xtensor<double,3> &elemvec) const;
private:
// bookkeeping
xt::xtensor<size_t,2> m_conn; // connectivity [nelem, nne ]
xt::xtensor<size_t,2> m_dofs; // DOF-numbers per node [nnode, ndim]
// dimensions
size_t m_nelem; // number of elements
size_t m_nne; // number of nodes per element
size_t m_nnode; // number of nodes
size_t m_ndim; // number of dimensions
size_t m_ndof; // number of DOFs
};
// -------------------------------------------------------------------------------------------------
} // namespace ...
// =================================================================================================
#endif

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