grid_smb< dim, blockEdgeSize, indexT > Class Template Reference

Detailed Description

template<unsigned int dim, unsigned int blockEdgeSize, typename indexT = long int>
class grid_smb< dim, blockEdgeSize, indexT >

This class provides an interface to linearization of coordinates and viceversa when blocks are involved. This can be seen as a lightweight version of grid_sm, with just LinId and InvLinId methods, but tuned for blocked data.

Definition at line 19 of file grid_smb.hpp.

#include <grid_smb.hpp>

Inheritance diagram for grid_smb< dim, blockEdgeSize, indexT >:

Public Member Functions
Box< dim, size_t >	getBox () const
	Return the box enclosing the grid. More...
__host__ __device__	grid_smb (const size_t(&sz)[dim])
__host__ __device__	grid_smb (const indexT(&sz)[dim])
__host__ __device__	grid_smb (const size_t domainBlockEdgeSize)
template<typename T >
__host__ __device__	grid_smb (const grid_sm< dim, T > blockGrid)
__host__ __device__	grid_smb (const grid_smb< dim, blockEdgeSize > &other)
__host__ __device__ grid_smb &	operator= (const grid_smb< dim, blockEdgeSize > &other)
__host__ __device__ const indexT(&	getSize () const)[dim]
__host__ __device__ const indexT &	size (int i) const
template<typename indexT_ >
__host__ __device__ indexT	LinId (const grid_key_dx< dim, indexT_ > coord) const
	Linearize the coordinate index. More...
template<typename indexT_ >
__host__ __device__ void	LinId (const grid_key_dx< dim, indexT_ > coord, indexT &blockLinId, int &localLinId) const
	Linearize the coordinate index. More...
__host__ __device__ grid_key_dx< dim, int >	InvLinId (const indexT linId) const
__host__ __device__ grid_key_dx< dim, int >	LocalInvLinId (unsigned int localLinId) const
__host__ __device__ grid_key_dx< dim, int >	InvLinId (indexT blockLinId, indexT localLinId) const
	Invert from the linearized block id + local id to the position of the point in coordinates. More...
template<typename indexT_ >
__host__ __device__ indexT	BlockLinId (const grid_key_dx< dim, indexT_ > &blockCoord) const
template<typename indexT_ >
__host__ __device__ grid_key_dx< dim, indexT >	getGlobalCoord (const grid_key_dx< dim, indexT_ > &blockCoord, unsigned int offset) const
__host__ __device__ grid_key_dx< dim, int >	BlockInvLinId (indexT blockLinId) const
indexT	size_blocks () const
indexT	size () const
__host__ __device__ indexT	getBlockSize () const
__host__ __device__ void	swap (grid_smb< dim, blockEdgeSize, indexT > &other)

Static Public Member Functions
static bool	noPointers ()

Static Protected Attributes
static constexpr indexT	blockSize = IntPow<blockEdgeSize, dim>::value

Private Attributes
Box< dim, size_t >	box
	Box enclosing the grid.
indexT	blockSz [dim]
indexT	sz [dim]

Member Function Documentation

getBox()

template<unsigned int dim, unsigned int blockEdgeSize, typename indexT = long int>

Box<dim,size_t> grid_smb< dim, blockEdgeSize, indexT >::getBox ( ) const

inline

Return the box enclosing the grid.

Returns

the box

Definition at line 42 of file grid_smb.hpp.

InvLinId()

template<unsigned int dim, unsigned int blockEdgeSize, typename indexT = long int>

__host__ __device__ grid_key_dx<dim, int> grid_smb< dim, blockEdgeSize, indexT >::InvLinId ( indexT  blockLinId, indexT  localLinId  ) const

inline

Invert from the linearized block id + local id to the position of the point in coordinates.

From the point coordinated x,y,z you can get the block coordinated block_x,block_y,block_z and the local coordinates inside the chunk loc_x,loc_y,loc_z

linearizing block coordinated you get blockId and linearizing the local coordinated you get localLinId

each point in a sparse grid is identified by the formula blockId*blockSize + localLinId

This function invert such formula.

Parameters

blockLinId	is blockId
localLinId	is localLinId in the formula

Returns

the spatial coordinates of the point

Definition at line 263 of file grid_smb.hpp.

LinId() [1/2]

template<unsigned int dim, unsigned int blockEdgeSize, typename indexT = long int>

template<typename indexT_ >

__host__ __device__ indexT grid_smb< dim, blockEdgeSize, indexT >::LinId ( const grid_key_dx< dim, indexT_ >  coord ) const

inline

Linearize the coordinate index.

The linearization is given by getting the block indexes and the local coordinate indexes

Linearize the block index (blockLinId), linearize the local index (localLinId) and return blockLinId * blockSize + localLinId

Parameters

coord

coordinates

Returns

linearized index

Definition at line 176 of file grid_smb.hpp.

LinId() [2/2]

template<unsigned int dim, unsigned int blockEdgeSize, typename indexT = long int>

template<typename indexT_ >

__host__ __device__ void grid_smb< dim, blockEdgeSize, indexT >::LinId ( const grid_key_dx< dim, indexT_ >  coord, indexT &  blockLinId, int &  localLinId  ) const

inline

Linearize the coordinate index.

The linearization is given by getting the block indexes and the local coordinate indexes

Linearize the block index (blockLinId), linearize the local index (localLinId) and return blockLinId and offset

Parameters

coord

coordinates

Returns

linearized index

Definition at line 204 of file grid_smb.hpp.

LocalInvLinId()

template<unsigned int dim, unsigned int blockEdgeSize, typename indexT = long int>

__host__ __device__ grid_key_dx<dim, int> grid_smb< dim, blockEdgeSize, indexT >::LocalInvLinId ( unsigned int  localLinId ) const

inline

brief Given a local offset it provide the the position in coordinates

Parameters

linId

point

Returns

the point in coordinates

Definition at line 232 of file grid_smb.hpp.

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

• openfpm_data/src/Grid/Geometry/grid_smb.hpp