Function arc

src/lib/angles.js:142–144

(r, a, cw)

    var largeArc = Math.abs(aEnd - aStart) <= PI ? 0 : 1;
    function arc(r, a, cw) {
        return 'A' + [r, r] + ' ' + [0, largeArc, cw] + ' ' + pt(r, a);
    }

    var p;