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Vector.h
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rGOOSEFEM GooseFEM
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 "config.h"
namespace GooseFEM {
/**
Class to switch between:
- "nodevec": nodal vectors, shape ``[nnode, ndim]``.
- "elemvec": nodal vectors stored per element, shape: ``[nelem, nne, ndim]``.
- "dofval": DOF values, shape: ``[ndof]``.
*/
class Vector {
public:
Vector() = default;
/**
Constructor.
\param conn Connectivity, shape ``[nelem, nne]``.
\param dofs DOFs per node, shape ``[nnode, ndim]``.
*/
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
// Copy nodevec to another nodevec
void copy(const xt::xtensor<double, 2>& nodevec_src, xt::xtensor<double, 2>& nodevec_dest) const;
// 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;
xt::xtensor<double, 2> Copy(
const xt::xtensor<double, 2>& nodevec_src,
const xt::xtensor<double, 2>& nodevec_dest) const;
// Get shape of dofval, nodevec, elemvec
std::array<size_t, 1> ShapeDofval() const;
std::array<size_t, 2> ShapeNodevec() const;
std::array<size_t, 3> ShapeElemvec() const;
std::array<size_t, 3> ShapeElemmat() const;
// Get zero-allocated dofval, nodevec, elemvec
xt::xtensor<double, 1> AllocateDofval() const;
xt::xtensor<double, 2> AllocateNodevec() const;
xt::xtensor<double, 3> AllocateElemvec() const;
xt::xtensor<double, 3> AllocateElemmat() const;
xt::xtensor<double, 1> AllocateDofval(double val) const;
xt::xtensor<double, 2> AllocateNodevec(double val) const;
xt::xtensor<double, 3> AllocateElemvec(double val) const;
xt::xtensor<double, 3> AllocateElemmat(double val) const;
protected:
xt::xtensor<size_t, 2> m_conn; ///< Connectivity ``[nelem, nne]``
xt::xtensor<size_t, 2> m_dofs; ///< DOF-numbers per node ``[nnode, ndim]``
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 GooseFEM
#include "Vector.hpp"
#endif
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