Function ends

docs/app/js/sanddance-app.js:109641–109657

(i)

        }
    });
    function ends(i) {
        var arc = topology.arcs[i < 0 ? ~i : i], p0 = arc[0], p1;
        if (topology.transform) p1 = [
            0,
            0
        ], arc.forEach(function(dp) {
            p1[0] += dp[0], p1[1] += dp[1];
        });
        else p1 = arc[arc.length - 1];
        return i < 0 ? [
            p1,
            p0
        ] : [
            p0,
            p1
        ];
    }
    function flush(fragmentByEnd, fragmentByStart) {
        for(var k in fragmentByEnd){
            var f = fragmentByEnd[k];