LiveCharts.Charts.CartesianChartCore.PrepareVerticalStackedAreas C# (CSharp) Method

        private void PrepareVerticalStackedAreas()
        {
            if (!View.ActualSeries.Any(x => x is IVerticalStackedAreaSeriesView)) return;

            var isPercentage =
                View.ActualSeries.Any(x => x is IStackModelableSeriesView && x is IVerticalStackedAreaSeriesView &&
                                     ((IStackModelableSeriesView) x).StackMode == StackMode.Percentage);

            foreach (var group in View.ActualSeries.OfType<IVerticalStackedAreaSeriesView>().GroupBy(x => x.ScalesXAt))
            {
                StackPoints(group, AxisOrientation.X, group.Key, isPercentage ? StackMode.Percentage : StackMode.Values);
            }
        }