neighborsIndicesCache

Actual cache for neighbor's indices (in a projection one-dimensional array) in CellularGA for each cell. Calculating neighbors indices is expensive for each iteration; cached values are stored in this property.

Example cache structure:

0: 2, 6, 3, 1 // neighbor's indices for target cell 0
1: 0, 7, 4, 2 // neighbor's indices for target cell 1
2: 1, 8, 5, 0 // neighbor's indices for target cell 2
3: 5, 0, 6, 4 // neighbor's indices for target cell 3
... etc.