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rAKA/src/fe_engine/shape_functions.hh
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shape_functions.hh
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/**
* @file shape_functions.hh
*
* @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
*
* @date creation: Tue Feb 15 2011
* @date last modification: Fri Jun 13 2014
*
* @brief shape function class
*
* @section LICENSE
*
* Copyright (©) 2010-2012, 2014 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* Akantu 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 3 of the License, or (at your option) any
* later version.
*
* Akantu 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 Akantu. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#include "aka_memory.hh"
#include "mesh.hh"
/* -------------------------------------------------------------------------- */
#ifndef __AKANTU_SHAPE_FUNCTIONS_HH__
#define __AKANTU_SHAPE_FUNCTIONS_HH__
__BEGIN_AKANTU__
/* -------------------------------------------------------------------------- */
class ShapeFunctions : protected Memory {
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public:
ShapeFunctions(const Mesh & mesh,
const ID & id = "shape",
const MemoryID & memory_id = 0) :
Memory(id, memory_id), mesh(mesh) {
};
virtual ~ShapeFunctions(){};
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public:
/// function to print the contain of the class
virtual void printself(std::ostream & stream, int indent = 0) const {
std::string space;
for(Int i = 0; i < indent; i++, space += AKANTU_INDENT);
stream << space << "Shapes [" << std::endl;
integration_points.printself(stream, indent + 1);
stream << space << "]" << std::endl;
};
/// set the integration points for a given element
template <ElementType type>
void setIntegrationPointsByType(const Matrix<Real> & integration_points,
const GhostType & ghost_type);
/// Build pre-computed matrices for interpolation of field form integration points at other given positions (interpolation_points)
inline void initElementalFieldInterpolationFromIntegrationPoints(const ElementTypeMapArray<Real> & interpolation_points_coordinates,
ElementTypeMapArray<Real> & interpolation_points_coordinates_matrices,
ElementTypeMapArray<Real> & quad_points_coordinates_inv_matrices,
const ElementTypeMapArray<Real> & quadrature_points_coordinates,
const ElementTypeMapArray<UInt> * element_filter) const;
/// Interpolate field at given position from given values of this field at integration points (field)
/// using matrices precomputed with initElementalFieldInterplationFromIntegrationPoints
inline void interpolateElementalFieldFromIntegrationPoints(const ElementTypeMapArray<Real> & field,
const ElementTypeMapArray<Real> & interpolation_points_coordinates_matrices,
const ElementTypeMapArray<Real> & quad_points_coordinates_inv_matrices,
ElementTypeMapArray<Real> & result,
const GhostType ghost_type,
const ElementTypeMapArray<UInt> * element_filter) const;
protected:
/// interpolate nodal values stored by element on the integration points
template <ElementType type>
void interpolateElementalFieldOnIntegrationPoints(const Array<Real> &u_el,
Array<Real> &uq,
GhostType ghost_type,
const Array<Real> & shapes,
const Array<UInt> & filter_elements) const;
/// gradient of nodal values stored by element on the control points
template <ElementType type>
void gradientElementalFieldOnIntegrationPoints(const Array<Real> &u_el,
Array<Real> &out_nablauq,
GhostType ghost_type,
const Array<Real> & shapes_derivatives,
const Array<UInt> & filter_elements) const;
/// By element versions of non-templated eponym methods
template <ElementType type>
inline void interpolateElementalFieldFromIntegrationPoints(const Array<Real> & field,
const Array<Real> & interpolation_points_coordinates_matrices,
const Array<Real> & quad_points_coordinates_inv_matrices,
ElementTypeMapArray<Real> & result,
const GhostType ghost_type,
const Array<UInt> & element_filter) const;
/// Interpolate field at given position from given values of this field at integration points (field)
/// using matrices precomputed with initElementalFieldInterplationFromIntegrationPoints
template <ElementType type>
inline void initElementalFieldInterpolationFromIntegrationPoints(const Array<Real> & interpolation_points_coordinates,
ElementTypeMapArray<Real> & interpolation_points_coordinates_matrices,
ElementTypeMapArray<Real> & quad_points_coordinates_inv_matrices,
const Array<Real> & quadrature_points_coordinates,
GhostType & ghost_type,
const Array<UInt> & element_filter) const;
/// build matrix for the interpolation of field form integration points
template <ElementType type>
inline void buildElementalFieldInterpolationMatrix(const Matrix<Real> & coordinates,
Matrix<Real> & coordMatrix,
UInt integration_order =
ElementClassProperty<type>::minimal_integration_order) const;
/// build the so called interpolation matrix (first collumn is 1, then the other collumns are the traansposed coordinates)
inline void buildInterpolationMatrix(const Matrix<Real> & coordinates,
Matrix<Real> & coordMatrix,
UInt integration_order) const;
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public:
/// get the size of the shapes returned by the element class
static inline UInt getShapeSize(const ElementType & type);
/// get the size of the shapes derivatives returned by the element class
static inline UInt getShapeDerivativesSize(const ElementType & type);
inline const Matrix<Real> & getIntegrationPoints(const ElementType & type,
const GhostType & ghost_type) const {
return integration_points(type, ghost_type);
}
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
protected:
/// associated mesh
const Mesh & mesh;
/// shape functions for all elements
ElementTypeMap< Matrix<Real> > integration_points;
};
#if defined (AKANTU_INCLUDE_INLINE_IMPL)
# include "shape_functions_inline_impl.cc"
#endif
/* -------------------------------------------------------------------------- */
/* inline functions */
/* -------------------------------------------------------------------------- */
/// standard output stream operator
inline std::ostream & operator <<(std::ostream & stream, const ShapeFunctions & _this)
{
_this.printself(stream);
return stream;
}
__END_AKANTU__
#endif /* __AKANTU_SHAPE_FUNCTIONS_HH__ */
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