internal IEnumerable <double> CalculateSeparatorIndices(ChartCore chart, AxisOrientationNew source, double unit)
{
if (!double.IsNaN(Separator.Step))
{
throw new Exception("Step should be NaN for WindowAxis separators");
}
if (Windows == null)
{
return(Enumerable.Empty <double>());
}
// Holder for the calculated separator indices and the proposed window
var supportedSeparatorCount = 0;
var separatorIndices = new List <double>();
IAxisWindow proposedWindow = AxisWindows.EmptyWindow;
// Build a range of possible separator indices
var rangeIndices = Enumerable.Range((int)Math.Floor(BotLimit), (int)Math.Floor(TopLimit - (EvaluatesUnitWidth ? unit : 0) - BotLimit)).Select(i => (double)i).ToList();
// Make sure we have at least 2 separators to show
if (Windows != null && rangeIndices.Count > 1)
{
foreach (var window in Windows)
{
IEnumerable <double> proposedSeparatorIndices;
// Calculate the number of supported separators.
supportedSeparatorCount = (int)Math.Floor(chart.ControlSize.Width / (window.MinimumSeparatorWidth * CleanFactor));
// Try go get separators. Continue if the window invalidated.
if (!window.TryGetSeparatorIndices(rangeIndices, supportedSeparatorCount, out proposedSeparatorIndices))
{
continue;
}
// Double check whether the window exceeded the maximum separator count.
// It might be it does not respect the supportedSeparatorCount parameter.
separatorIndices = proposedSeparatorIndices.ToList();
if (supportedSeparatorCount < separatorIndices.Count)
{
continue;
}
// Pick this window. It is the first who passed both validations and our best candidate
proposedWindow = window;
break;
}
}
if (proposedWindow == null)
{
// All variables are still set to defaults
}
// Force the step of 1, as our prepare chart will filter the X axis for valid separators, and will skip a few
S = 1;
Magnitude = Math.Pow(10, Math.Floor(Math.Log(supportedSeparatorCount) / Math.Log(10)));
SelectedWindow = proposedWindow;
return(separatorIndices);
}
public void SetSelectedWindow(IAxisWindow window)
{
SetCurrentValue(SelectedWindowProperty, window);
}