CA_utils.cpp File Reference

Implementation file for the utility functions utilized by CellularAutomata class defined in CAutils.h. More...

#include "CAdatatypes.h"
#include <utility>
#include <cmath>
#include <string>
#include <map>
#include <sstream>
#include <fstream>

Functions
bool	is_diagonal_neighboring_cell_2d (int i, int j)
	determines if a cell is diagonal to the central cell diagram of slice: 1 = diagonal cell 1 0 1 0 0 0 1 0 1 More...
bool	is_diagonal_neighboring_cell_3d (int i, int j, int k)
	determines if a cell is diagonal to the central cell if k == 0 then both i and j have be non-zero diagram of slice: 1 = diagonal cell 1 0 1 0 0 0 1 0 1 More...
bool	less_than_votes (const std::pair< int, int > &a, const std::pair< int, int > &b)
	Determines if a has less votes than b. More...
int	get_periodic_index (int i, int di, int axis_dim)
	get the periodic index used for finding periodic boundary neighbors More...
void	get_periodic_moore_neighbor_index (int rank, int radius, int neighborhood_array_index, int *neighbor_index)
	Get the periodic Moore neighbor index [x, y, z] from a flattened neighborhood array index. More...
void	get_periodic_von_neumann_neighbor_index (int rank, int radius, int neighborhood_array_index, int *neighbor_index)
	Get the periodic Von Neumann neighbor index [x, y, z] from a flattened neighborhood array index. More...
void	get_density (std::ifstream &data, std::ofstream &result)
	Get the density result output to the result file. More...

Detailed Description

Implementation file for the utility functions utilized by CellularAutomata class defined in CAutils.h.

Author

Emmanuel Cortes (ecort.nosp@m.es@b.nosp@m.erkel.nosp@m.ey.e.nosp@m.du)

Contributor(s)
   Chongye Feng

Date

2022-12-06

Function Documentation

get_density()

void get_density	(	std::ifstream &	data,
		std::ofstream &	result
	)

Get the density result output to the result file.

Parameters

data
result	Line1 n_states; Line2 dims; Line3 counts of states of each step.

get_periodic_index()

int get_periodic_index	(	int	i,
		int	di,
		int	axis_dim
	)

get the periodic index used for finding periodic boundary neighbors

Parameters

i	cell's i-th index
di	neighbor's cell i-th offset
axis_dim	dimension of i-th axis

Returns

int

get_periodic_moore_neighbor_index()

void get_periodic_moore_neighbor_index	(	int	rank,
		int	radius,
		int	neighborhood_array_index,
		int *	neighbor_index
	)

Get the periodic Moore neighbor index [x, y, z] from a flattened neighborhood array index.

Parameters

rank	cell data rank
radius	neighborhood radius
neighborhood_array_index	flat array index to be converted to [x, y, z]
neighbor_index	int array containing x, y and z coordinates

get_periodic_von_neumann_neighbor_index()

void get_periodic_von_neumann_neighbor_index	(	int	rank,
		int	radius,
		int	neighborhood_array_index,
		int *	neighbor_index
	)

Get the periodic Von Neumann neighbor index [x, y, z] from a flattened neighborhood array index.

Parameters

rank	cell data rank
radius	neighborhood radius
neighborhood_array_index	flat array index to be converted to [x, y, z]
neighbor_index	int array containing x, y and z coordinates

is_diagonal_neighboring_cell_2d()

bool is_diagonal_neighboring_cell_2d	(	int	i,
		int	j
	)

determines if a cell is diagonal to the central cell
diagram of slice: 1 = diagonal cell
1 0 1
0 0 0
1 0 1

Parameters

i	cell's i-th index
j	cell's j-th index

Returns

true: cell is diagonal

false: cell is not diagonal

is_diagonal_neighboring_cell_3d()

bool is_diagonal_neighboring_cell_3d	(	int	i,
		int	j,
		int	k
	)

determines if a cell is diagonal to the central cell
if k == 0 then both i and j have be non-zero
diagram of slice: 1 = diagonal cell
1 0 1
0 0 0
1 0 1

if k != 0 then either i or j can be non-zero
diagram of slice: 1 = diagonal cell
1 1 1
1 0 1
1 1 1

Parameters

i	cell's i-th index
j	cell's j-th index
k	cell's k-th index

Returns

true: cell is diagonal

false: cell is not diagonal

less_than_votes()

bool less_than_votes	(	const std::pair< int, int > &	a,
		const std::pair< int, int > &	b
	)

Determines if a has less votes than b.

Used to determine max element in a MajorityCounter instance.

Parameters

a	pair instance with the votes stored in the second property
b	other pair with the votes stored in the second property