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@thi.ng/grid-iterators
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2D grid and shape iterators w/ multiple orderings
thi.ng/grid-iterators
thi-ng/umbrella
@thi.ng/grid-iterators
/
filters.js
13 lines
(12 loc)
•
242 B
JavaScript
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const
isOnDiagonal
= (
[x, y], n
) => {
const
d = (x + y) / n |
0
;
return
y === d * n - x; };
const
isOnDiagonalAlt
= (
[x, y], N
) => {
const
d = (x - y) / N |
0
;
return
-y === d * N - x; };
export
{ isOnDiagonal, isOnDiagonalAlt };