Function outline2coords

test/jasmine/tests/select_test.js:1718–1730

(outline)

        // d attr to array of segment [x,y]
        function outline2coords(outline) {
            if(!outline.size()) return [[]];

            return outline.attr('d')
                .replace(/Z/g, '')
                .split('M')
                .filter(Boolean)
                .map(function(s) {
                    return s.split('L')
                        .map(function(s) { return s.split(',').map(Number); });
                })
                .reduce(function(a, b) { return a.concat(b); });
        }

        function _assert(msg, exp) {
            var outline = d3Select(gd).select('.zoomlayer').select('.select-outline');