t8_geometry_zero Struct Reference

Inheritance diagram for t8_geometry_zero:

Public Member Functions
	t8_geometry_zero (int dimension)
	Constructor of the zero geometry with a given dimension. More...
virtual	~t8_geometry_zero ()
	The destructor. More...
t8_geometry_type_t	t8_geom_get_type () const
	Get the type of this geometry. More...
virtual void	t8_geom_evaluate (t8_cmesh_t cmesh, t8_gloidx_t gtreeid, const double *ref_coords, const size_t num_coords, double *out_coords) const
	Maps points in the reference space \( [0,1]^\mathrm{dim} \to \mathbb{R}^3 \). More...
virtual void	t8_geom_evaluate_jacobian (t8_cmesh_t cmesh, t8_gloidx_t gtreeid, const double *ref_coords, const size_t num_coords, double *jacobian) const
	Compute the jacobian of the t8_geom_evaluate map at a point in the reference space \( [0,1]^\mathrm{dim} \). More...
virtual void	t8_geom_load_tree_data (t8_cmesh_t cmesh, t8_gloidx_t gtreeid)
	Update a possible internal data buffer for per tree data. More...
Public Member Functions inherited from t8_geometry
	t8_geometry (int dimension, const char *name, const char *attribute_name=NULL)
virtual	~t8_geometry ()
	The destructor. More...
int	t8_geom_get_dimension () const
	Get the dimension of this geometry. More...
const char *	t8_geom_get_name () const
	Get the name of this geometry. More...

Additional Inherited Members
Protected Attributes inherited from t8_geometry
int	dimension
	The dimension of reference space for which this is a geometry.
const char *	name
	The name of this geometry.

Constructor & Destructor Documentation

t8_geometry_zero()

t8_geometry_zero::t8_geometry_zero

(

int

dimension

)

Constructor of the zero geometry with a given dimension.

The geometry is viable with all tree types. This geometry maps all points to zero and is meant for debugging purposes. Sets the dimension and the name to "t8_geom_zero_{dim}"

Parameters

[in]

dim

0 <= dimension <= 3. The dimension.

~t8_geometry_zero()

t8_geometry_zero::~t8_geometry_zero ( )

virtual

The destructor.

Clears the allocated memory.

Member Function Documentation

t8_geom_evaluate()

void t8_geometry_zero::t8_geom_evaluate ( t8_cmesh_t  cmesh, t8_gloidx_t  gtreeid, const double *  ref_coords, const size_t  num_coords, double *  out_coords  ) const

virtual

Maps points in the reference space \( [0,1]^\mathrm{dim} \to \mathbb{R}^3 \).

Parameters

[in]	cmesh	The cmesh in which the point lies.
[in]	gtreeid	The global tree (of the cmesh) in which the reference point is.
[in]	ref_coords	Array of dimension x num_coords many entries, specifying points in \( [0,1]^\mathrm{dim} \).
[in]	num_coords	Amount of points of /f$ \mathrm{dim} /f$ to map.
[out]	out_coords	The mapped coordinates in physical space of ref_coords. The length is num_coords * 3.

Note

All entries in out_coords will be set to 0.

Implements t8_geometry.

t8_geom_evaluate_jacobian()

void t8_geometry_zero::t8_geom_evaluate_jacobian ( t8_cmesh_t  cmesh, t8_gloidx_t  gtreeid, const double *  ref_coords, const size_t  num_coords, double *  jacobian  ) const

virtual

Compute the jacobian of the t8_geom_evaluate map at a point in the reference space \( [0,1]^\mathrm{dim} \).

Parameters

[in]	cmesh	The cmesh in which the point lies.
[in]	gtreeid	The global tree (of the cmesh) in which the reference point is.
[in]	ref_coords	Array of dimension x num_coords many entries, specifying points in \( [0,1]^\mathrm{dim} \).
[in]	num_coords	Amount of points of /f$ \mathrm{dim} /f$ to map.
[out]	jacobian	The jacobian at ref_coords. Array of size num_coords x dimension x 3. Indices \( 3 \cdot i\) , \( 3 \cdot i+1 \) , \( 3 \cdot i+2 \) correspond to the \( i \)-th column of the jacobian (Entry \( 3 \cdot i + j \) is \( \frac{\partial f_j}{\partial x_i} \)).

Note

All entries in jacobian will be set to zero.

Implements t8_geometry.

t8_geom_get_type()

t8_geometry_type_t t8_geometry_zero::t8_geom_get_type ( ) const

inlinevirtual

Get the type of this geometry.

Returns

The type.

Implements t8_geometry.

t8_geom_load_tree_data()

void t8_geometry_zero::t8_geom_load_tree_data ( t8_cmesh_t  cmesh, t8_gloidx_t  gtreeid  )

inlinevirtual

Update a possible internal data buffer for per tree data.

This function is called before the first coordinates in a new tree are evaluated. In this implementation, we do nothing, since we do not need any tree data.

Parameters

[in]	cmesh	The cmesh.
[in]	gtreeid	The global tree.

Implements t8_geometry.

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

• src/t8_geometry/t8_geometry_implementations/t8_geometry_zero.hxx
• src/t8_geometry/t8_geometry_implementations/t8_geometry_zero.cxx