Function indexFromCell

Returns the index for a given cell in a UniformGrid. This is useful if a grid is stored in an array.

const data = [
 1, 2,
 3, 4,
 5, 6
];

// Get index for cell {x: 1, y: 1} (ie. second column, second row)
const index = indexFromCell({ rows: 2, cols: 2}, {x: 1, y: 1}); // Yields 3
console.log(data[index]); // Yields 4
Copy

Bounds logic is applied to cell.x/y separately. Wrapping only ever happens in same col/row.