#include <ElemUtil.hpp>

Inheritance diagram for moab::Element::SpectralHex:

Collaboration diagram for moab::Element::SpectralHex:

Public Member Functions
	SpectralHex (const std::vector< CartVect > &vertices)

	SpectralHex (int order, double x, double y, double *z)

	SpectralHex (int order)

	SpectralHex ()

virtual	~SpectralHex ()

void	set_gl_points (double x, double y, double *z)

virtual CartVect	evaluate (const CartVect &xi) const
	Evaluate the map on $x_i$ (calculate $\vec x = F($\vec \xi)$ ) More...

virtual CartVect	ievaluate (const CartVect &x, double tol=1e-6, const CartVect &x0=CartVect(0.0)) const
	Evaluate the inverse map (calculate $\vec \xi = F^-1($\vec x)$ to given tolerance) More...

virtual Matrix3	jacobian (const CartVect &xi) const
	Evaluate the map's Jacobi matrix. More...

double	evaluate_scalar_field (const CartVect &xi, const double *field_vertex_values) const
	Evaluate a scalar field at a point given field values at the vertices. More...

double	integrate_scalar_field (const double *field_vertex_values) const
	Integrate a scalar field over the element given field values at the vertices. More...

bool	inside_nat_space (const CartVect &xi, double &tol) const
	decide if within the natural param space, with a tolerance More...

void	Init (int order)

void	freedata ()

Public Member Functions inherited from moab::Element::Map
	Map (const std::vector< CartVect > &v)
	Construct a Map defined by the given std::vector of vertices. More...

	Map (const unsigned int n)
	Construct a Map defined by n vertices. More...

virtual	~Map ()

virtual Matrix3	ijacobian (const CartVect &xi) const
	Evaluate the inverse of the Jacobi matrix. More...

virtual double	det_jacobian (const CartVect &xi) const
	Evaluate the determinate of the Jacobi matrix. More...

virtual double	det_ijacobian (const CartVect &xi) const
	Evaluate the determinate of the inverse Jacobi matrix. More...

unsigned int	size ()
	Size of the vertices vector. More...

const std::vector< CartVect > &	get_vertices ()
	Retrieve vertices. More...

virtual void	set_vertices (const std::vector< CartVect > &v)
	Set vertices. More...

virtual bool	inside_box (const CartVect &xi, double &tol) const

Protected Attributes
realType *	_xyz [3]

Protected Attributes inherited from moab::Element::Map
std::vector< CartVect >	vertex

Static Protected Attributes
static int	_n

static realType *	_z [3]

static lagrange_data	_ld [3]

static opt_data_3	_data

static realType *	_odwork

static bool	_init = false

Detailed Description

Definition at line 243 of file ElemUtil.hpp.

Constructor & Destructor Documentation

◆ SpectralHex() [1/4]

moab::Element::SpectralHex::SpectralHex ( const std::vector< CartVect > & vertices )

inline

Definition at line 246 of file ElemUtil.hpp.

                                                              : Map( vertices )
         {
             _xyz[0] = _xyz[1] = _xyz[2] = NULL;
         };

References _xyz.

◆ SpectralHex() [2/4]

moab::Element::SpectralHex::SpectralHex	(	int	order,
		double *	x,
		double *	y,
		double *	z
	)

Definition at line 955 of file ElemUtil.cpp.

                                                                          : Map( 0 )
     {
         Init( order );
         _xyz[0] = x;
         _xyz[1] = y;
         _xyz[2] = z;
     }

References _xyz, and Init().

◆ SpectralHex() [3/4]

moab::Element::SpectralHex::SpectralHex ( int order )

Definition at line 962 of file ElemUtil.cpp.

                                         : Map( 0 )
     {
         Init( order );
         _xyz[0] = _xyz[1] = _xyz[2] = NULL;
     }

References _xyz, and Init().

◆ SpectralHex() [4/4]

moab::Element::SpectralHex::SpectralHex ( )

Definition at line 950 of file ElemUtil.cpp.

                              : Map( 0 )
     {
         _xyz[0] = _xyz[1] = _xyz[2] = NULL;
     }

References _xyz.

◆ ~SpectralHex()

moab::Element::SpectralHex::~SpectralHex ( )

virtual

Definition at line 967 of file ElemUtil.cpp.

     {
         if( _init ) freedata();
         _init = false;
     }

References _init, and freedata().

Member Function Documentation

◆ evaluate()

CartVect moab::Element::SpectralHex::evaluate ( const CartVect & xi ) const

virtual

Evaluate the map on $x_i$ (calculate $\vec x = F($\vec \xi)$ )

Implements moab::Element::Map.

Definition at line 58 of file SpectralHex.cpp.

 {
     // piece that we shouldn't want to cache
     int d = 0;
     for( d = 0; d < 3; d++ )
     {
         lagrange_0( &_ld[d], params[d] );
     }
     CartVect result;
     for( d = 0; d < 3; d++ )
     {
         result[d] = tensor_i3( _ld[0].J, _ld[0].n, _ld[1].J, _ld[1].n, _ld[2].J, _ld[2].n,
                                _xyz[d],  // this is the "field"
                                _odwork );
     }
     return result;
 }

References moab::SpectralHex::_ld, moab::SpectralHex::_odwork, lagrange_0(), moab::params, and tensor_i3().

Referenced by test_spectral_hex().

◆ evaluate_scalar_field()

double moab::Element::SpectralHex::evaluate_scalar_field	(	const CartVect &	xi,
		const double *	field_vertex_values
	)		const

virtual

Evaluate a scalar field at a point given field values at the vertices.

Implements moab::Element::Map.

Definition at line 1073 of file ElemUtil.cpp.

     {
         // piece that we shouldn't want to cache
         int d;
         for( d = 0; d < 3; d++ )
         {
             lagrange_0( &_ld[d], xi[d] );
         }
  
         double value = tensor_i3( _ld[0].J, _ld[0].n, _ld[1].J, _ld[1].n, _ld[2].J, _ld[2].n, field, _odwork );
         return value;
     }

References _ld, _odwork, lagrange_0(), and tensor_i3().

Referenced by moab::Coupler::interp_field(), and test_spectral_hex().

◆ freedata()

void moab::Element::SpectralHex::freedata ( )

Definition at line 41 of file SpectralHex.cpp.

 {
     for( int d = 0; d < 3; d++ )
     {
         free( _z[d] );
         lagrange_free( &_ld[d] );
     }
     opt_free_3( &_data );
     free( _odwork );
 }

References moab::SpectralHex::_data, moab::SpectralHex::_ld, moab::SpectralHex::_odwork, moab::SpectralHex::_z, lagrange_free(), and opt_free_3().

Referenced by Init(), and ~SpectralHex().

◆ ievaluate()

CartVect moab::Element::SpectralHex::ievaluate	(	const CartVect &	x,
		double	tol = `1e-6`,
		const CartVect &	x0 = `CartVect( 0.0 )`
	)		const

virtual

Evaluate the inverse map (calculate $\vec \xi = F^-1($\vec x)$ to given tolerance)

Reimplemented from moab::Element::Map.

Definition at line 1030 of file ElemUtil.cpp.

     {
         // find nearest point
         realType x_star[3];
         xyz.get( x_star );
  
         realType r[3] = { 0, 0, 0 };  // initial guess for parametric coords
         x0.get( r );
         unsigned c    = opt_no_constraints_3;
         realType dist = opt_findpt_3( &_data, (const realType**)_xyz, x_star, r, &c );
         // if it did not converge, get out with throw...
         if( dist > 10 * tol )  // outside the element
         {
             std::vector< CartVect > dummy;
             throw Map::EvaluationError( xyz, dummy );
         }
         // c tells us if we landed inside the element or exactly on a face, edge, or node
         // also, dist shows the distance to the computed point.
         // copy parametric coords back
         return CartVect( r );
     }

References _data, _xyz, moab::CartVect::get(), opt_findpt_3(), and opt_no_constraints_3.

Referenced by moab::Coupler::nat_param(), and test_spectral_hex().

◆ Init()

void moab::Element::SpectralHex::Init ( int order )

Definition at line 972 of file ElemUtil.cpp.

     {
         if( _init && _n == order ) return;
         if( _init && _n != order )
         {
             // TODO: free data cached
             freedata();
         }
         // compute stuff that depends only on order
         _init = true;
         _n    = order;
         // triplicates! n is the same in all directions !!!
         for( int d = 0; d < 3; d++ )
         {
             _z[d] = tmalloc( realType, _n );
             lobatto_nodes( _z[d], _n );
             lagrange_setup( &_ld[d], _z[d], _n );
         }
         opt_alloc_3( &_data, _ld );
  
         unsigned int nf = _n * _n, ne = _n, nw = 2 * _n * _n + 3 * _n;
         _odwork = tmalloc( realType, 6 * nf + 9 * ne + nw );
     }

References _data, _init, _ld, _n, _odwork, _z, freedata(), lagrange_setup(), lobatto_nodes(), opt_alloc_3(), and tmalloc.

Referenced by SpectralHex().

◆ inside_nat_space()

bool moab::Element::SpectralHex::inside_nat_space	(	const CartVect &	xi,
		double &	tol
	)		const

virtual

decide if within the natural param space, with a tolerance

Implements moab::Element::Map.

Definition at line 1134 of file ElemUtil.cpp.

     {
         // just look at the box+tol here
         return ( xi[0] >= -1. - tol ) && ( xi[0] <= 1. + tol ) && ( xi[1] >= -1. - tol ) && ( xi[1] <= 1. + tol ) &&
                ( xi[2] >= -1. - tol ) && ( xi[2] <= 1. + tol );
     }

Referenced by moab::Coupler::nat_param().

◆ integrate_scalar_field()

double moab::Element::SpectralHex::integrate_scalar_field ( const double * field_vertex_values ) const

virtual

Integrate a scalar field over the element given field values at the vertices.

Implements moab::Element::Map.

Definition at line 1085 of file ElemUtil.cpp.

     {
         // set the position of GL points
         // set the positions of GL nodes, before evaluations
         _data.elx[0] = _xyz[0];
         _data.elx[1] = _xyz[1];
         _data.elx[2] = _xyz[2];
         double xi[3];
         // triple loop; the most inner loop is in r direction, then s, then t
         double integral = 0.;
         // double volume = 0;
         int index = 0;  // used fr the inner loop
         for( int k = 0; k < _n; k++ )
         {
             xi[2] = _ld[2].z[k];
             // double wk= _ld[2].w[k];
             for( int j = 0; j < _n; j++ )
             {
                 xi[1] = _ld[1].z[j];
                 // double wj= _ld[1].w[j];
                 for( int i = 0; i < _n; i++ )
                 {
                     xi[0] = _ld[0].z[i];
                     // double wi= _ld[0].w[i];
                     opt_vol_set_intp_3( &_data, xi );
                     double wk = _ld[2].J[k];
                     double wj = _ld[1].J[j];
                     double wi = _ld[0].J[i];
                     Matrix3 J( 0. );
                     // it is organized differently
                     J( 0, 0 ) = _data.jac[0];  // dx/dr
                     J( 0, 1 ) = _data.jac[1];  // dx/ds
                     J( 0, 2 ) = _data.jac[2];  // dx/dt
                     J( 1, 0 ) = _data.jac[3];  // dy/dr
                     J( 1, 1 ) = _data.jac[4];  // dy/ds
                     J( 1, 2 ) = _data.jac[5];  // dy/dt
                     J( 2, 0 ) = _data.jac[6];  // dz/dr
                     J( 2, 1 ) = _data.jac[7];  // dz/ds
                     J( 2, 2 ) = _data.jac[8];  // dz/dt
                     double bm = wk * wj * wi * J.determinant();
                     integral += bm * field_vertex_values[index++];
                     // volume +=bm;
                 }
             }
         }
         // std::cout << "volume: " << volume << "\n";
         return integral;
     }

References _data, _ld, _n, _xyz, moab::Matrix3::determinant(), opt_data_3::elx, moab::index, lagrange_data::J, opt_data_3::jac, opt_vol_set_intp_3(), and lagrange_data::z.

Referenced by test_spectral_hex().

◆ jacobian()

Matrix3 moab::Element::SpectralHex::jacobian ( const CartVect & xi ) const

virtual

Evaluate the map's Jacobi matrix.

Implements moab::Element::Map.

Definition at line 100 of file SpectralHex.cpp.

 {
     real x_i[3];
     params.get( x_i );
     // set the positions of GL nodes, before evaluations
     _data.elx[0] = _xyz[0];
     _data.elx[1] = _xyz[1];
     _data.elx[2] = _xyz[2];
     opt_vol_set_intp_3( &_data, x_i );
     Matrix3 J( 0. );
     // it is organized differently
     J( 0, 0 ) = _data.jac[0];  // dx/dr
     J( 0, 1 ) = _data.jac[1];  // dx/ds
     J( 0, 2 ) = _data.jac[2];  // dx/dt
     J( 1, 0 ) = _data.jac[3];  // dy/dr
     J( 1, 1 ) = _data.jac[4];  // dy/ds
     J( 1, 2 ) = _data.jac[5];  // dy/dt
     J( 2, 0 ) = _data.jac[6];  // dz/dr
     J( 2, 1 ) = _data.jac[7];  // dz/ds
     J( 2, 2 ) = _data.jac[8];  // dz/dt
     return J;
 }

References moab::SpectralHex::_data, opt_data_3::elx, opt_data_3::jac, opt_vol_set_intp_3(), and moab::params.

Referenced by test_spectral_hex().

◆ set_gl_points()

void moab::Element::SpectralHex::set_gl_points	(	double *	x,
		double *	y,
		double *	z
	)

Definition at line 52 of file SpectralHex.cpp.

 {
     _xyz[0] = x;
     _xyz[1] = y;
     _xyz[2] = z;
 }

Referenced by moab::Coupler::nat_param(), and test_spectral_hex().

Member Data Documentation

◆ _data

opt_data_3 moab::Element::SpectralHex::_data

staticprotected

Definition at line 272 of file ElemUtil.hpp.

Referenced by ievaluate(), Init(), and integrate_scalar_field().

◆ _init

bool moab::Element::SpectralHex::_init = false

staticprotected

Definition at line 276 of file ElemUtil.hpp.

Referenced by Init(), and ~SpectralHex().

◆ _ld

lagrange_data moab::Element::SpectralHex::_ld

staticprotected

Definition at line 271 of file ElemUtil.hpp.

Referenced by evaluate_scalar_field(), Init(), and integrate_scalar_field().

◆ _n

int moab::Element::SpectralHex::_n

staticprotected

Definition at line 269 of file ElemUtil.hpp.

Referenced by Init(), and integrate_scalar_field().

◆ _odwork

realType * moab::Element::SpectralHex::_odwork

staticprotected

Definition at line 273 of file ElemUtil.hpp.

Referenced by evaluate_scalar_field(), and Init().

◆ _xyz

realType* moab::Element::SpectralHex::_xyz[3]

protected

Definition at line 278 of file ElemUtil.hpp.

Referenced by ievaluate(), integrate_scalar_field(), and SpectralHex().

◆ _z

realType * moab::Element::SpectralHex::_z

staticprotected

Definition at line 270 of file ElemUtil.hpp.

Referenced by Init().

The documentation for this class was generated from the following files:

Public Member Functions

Protected Attributes

Static Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ SpectralHex() [1/4]

◆ SpectralHex() [2/4]

◆ SpectralHex() [3/4]

◆ SpectralHex() [4/4]

◆ ~SpectralHex()

Member Function Documentation

◆ evaluate()

◆ evaluate_scalar_field()

◆ freedata()

◆ ievaluate()

◆ Init()

◆ inside_nat_space()

◆ integrate_scalar_field()

◆ jacobian()

◆ set_gl_points()

Member Data Documentation

◆ _data

◆ _init

◆ _ld

◆ _n

◆ _odwork

◆ _xyz

◆ _z