SAMRAI::mesh::SpatialKey Class Reference

#include <SpatialKey.h>

Public Member Functions
	SpatialKey ()
	SpatialKey (const unsigned int i, const unsigned int j=0, const unsigned int k=0, const unsigned int level_num=0)
	SpatialKey (const SpatialKey &spatial_key)
	~SpatialKey ()
SpatialKey &	operator= (const SpatialKey &spatial_key)
bool	operator== (const SpatialKey &spatial_key) const
bool	operator!= (const SpatialKey &spatial_key) const
bool	operator< (const SpatialKey &spatial_key) const
bool	operator<= (const SpatialKey &spatial_key) const
bool	operator> (const SpatialKey &spatial_key) const
bool	operator>= (const SpatialKey &spatial_key) const
void	setToZero ()
void	setKey (const unsigned int i=0, const unsigned int j=0, const unsigned int k=0, const unsigned int level_num=0)

Private Member Functions
void	blendOneCoord (const unsigned int coord, const int coord_offset)

Private Attributes
int	d_bits_per_int
unsigned int	d_key [NUM_COORDS_MIXED_FOR_SPATIAL_KEY]

Friends
std::ostream &	operator<< (std::ostream &s, const SpatialKey &spatial_key)

Detailed Description

Class SpatialKey provides a mapping from coordinates in an abstract index space to a key that can be used to order the the points with a Morton-type space filling curve (See Gutman, Dr Dobb's Journal, July 1999, pg 115-21 for an introduction).
This curve orders a set of points in space so that points near each other in space are likely, but not guaranteed, to be near each other in the ordering.

Constructor & Destructor Documentation

SpatialKey() [1/3]

SAMRAI::mesh::SpatialKey::SpatialKey

(

)

The default constructor creates a spatial key with zero value.

SpatialKey() [2/3]

SAMRAI::mesh::SpatialKey::SpatialKey	(	const unsigned int	i,
		const unsigned int	j = 0,
		const unsigned int	k = 0,
		const unsigned int	level_num = 0
	)

Create a spatial key from given index space coordinates and level number.

SpatialKey() [3/3]

SAMRAI::mesh::SpatialKey::SpatialKey

(

const SpatialKey &

spatial_key

)

Copy constructor for spatial key.

~SpatialKey()

SAMRAI::mesh::SpatialKey::~SpatialKey

(

)

The destructor for a spatial key does nothing interesting.

Member Function Documentation

operator=()

SpatialKey& SAMRAI::mesh::SpatialKey::operator=

(

const SpatialKey &

spatial_key

)

Assignment operator for spatial key.

operator==()

bool SAMRAI::mesh::SpatialKey::operator==

(

const SpatialKey &

spatial_key

)

const

Return true if argument key is equal to this key. Otherwise, return false.

operator!=()

bool SAMRAI::mesh::SpatialKey::operator!=

(

const SpatialKey &

spatial_key

)

const

Return true if argument key is not equal to this key. Otherwise, return false.

operator<()

bool SAMRAI::mesh::SpatialKey::operator<

(

const SpatialKey &

spatial_key

)

const

Return true if this key is less than argument key. Otherwise, return false.

operator<=()

bool SAMRAI::mesh::SpatialKey::operator<=

(

const SpatialKey &

spatial_key

)

const

Return true if this key is less than or equal to argument key. Otherwise, return false.

operator>()

bool SAMRAI::mesh::SpatialKey::operator>

(

const SpatialKey &

spatial_key

)

const

Return true if this key is greater than argument key. Otherwise, return false.

operator>=()

bool SAMRAI::mesh::SpatialKey::operator>=

(

const SpatialKey &

spatial_key

)

const

Return true if this key is greater than or equal to argument key. Otherwise, return false.

setToZero()

void SAMRAI::mesh::SpatialKey::setToZero

(

)

Set this key to zero key.

setKey()

void SAMRAI::mesh::SpatialKey::setKey	(	const unsigned int	i = 0,
		const unsigned int	j = 0,
		const unsigned int	k = 0,
		const unsigned int	level_num = 0
	)

Set this key from the index space coordinates and the level number.

The values of i, j, and k default to 0 to handle cases where the number of dimensions in the problem is not 3. The default value of level_num is also 0.

blendOneCoord()

void SAMRAI::mesh::SpatialKey::blendOneCoord ( const unsigned int  coord, const int  coord_offset  )

private

Friends And Related Function Documentation

operator<<

std::ostream& operator<< ( std::ostream &  s, const SpatialKey &  spatial_key  )

friend

Write a spatial key to an output stream. The spatial key is output in hex to avoid the binary to decimal conversion of the key.

Note that the proper functioning of this method depends on having 32 bits per integer (more specifically, 8 hex characters per integer).

Member Data Documentation

d_bits_per_int

int SAMRAI::mesh::SpatialKey::d_bits_per_int

private

d_key

unsigned int SAMRAI::mesh::SpatialKey::d_key[NUM_COORDS_MIXED_FOR_SPATIAL_KEY]

private

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

• /samrai/include/SpatialKey.h