47 lines
868 B
JavaScript
47 lines
868 B
JavaScript
import * as Vector from Geometry.Vector;
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return {
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at: at,
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column: column,
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generate: generate,
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iter: iter,
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row: row,
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set: set,
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square: square
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};
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function generate(width, height, f) {
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var result = [];
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for(var row = 0; row < height; row++) {
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result[row] = [];;
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for(var column = 0; column < width; column++) {
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result[row].push(f(Vector.make(row, column)));
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}
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}
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return result;
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}
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function iter(grid, f) {
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generate(grid.length > 0 ? grid[0].length : null, grid.length, f);
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}
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function square(size, value) {
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return generate(size, size, function() {return value;});
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}
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function at(grid, vector) {
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return grid[vector.row][vector.column];
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}
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function set(grid, vector, value) {
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return grid[vector.row][vector.column] = value;
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}
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function row(grid, n) {
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return grid[n];
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}
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function column(grid, n) {
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return grid.map(function(row) {return row[n];});
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}
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