Function set

docs/app/js/sanddance-app.js:69883–69887

(out, x, y)

    return out;
}
function set(out, x, y) {
    out[0] = x;
    out[1] = y;
    return out;
}
function add(out, a, b) {
    out[0] = a[0] + b[0];
    out[1] = a[1] + b[1];