Function setWindow

docs/app/js/sanddance-app.js:119045–119051

(w, f, i, n)

    }
}
function setWindow(w, f, i, n) {
    w.p0 = w.i0;
    w.p1 = w.i1;
    w.i0 = f[0] == null ? 0 : Math.max(0, i - Math.abs(f[0]));
    w.i1 = f[1] == null ? n : Math.min(n, i + Math.abs(f[1]) + 1);
    w.index = i;
} // if frame type is 'range', adjust window for peer values
function adjustRange(w, bisect) {
    const r0 = w.i0, r1 = w.i1 - 1, c = w.compare, d = w.data, n = d.length - 1;
    if (r0 > 0 && !c(d[r0], d[r0 - 1])) w.i0 = bisect.left(d, d[r0]);