问高架内边界曲线

EN

(function(H) {
    H.wrap(H.seriesTypes.column.prototype, 'drawPoints', function(proceed) {
        this.points.forEach(function(point) {
            var sArgs = point.shapeArgs;
            point.shapeType = 'path';
            point.shapeArgs = {
                'd': [
                    'M', sArgs.x, sArgs.y,
                    'Q', sArgs.x + sArgs.width / 2,
                    sArgs.y + sArgs.width / 2,
                    sArgs.x + sArgs.width, sArgs.y,
                    'L', sArgs.x + sArgs.width, sArgs.y + sArgs.height,
                    sArgs.x, sArgs.y + sArgs.height, 'z'
                ]
            }
        });

        proceed.apply(this, Array.prototype.slice.call(arguments, 1));
    });
}(Highcharts));