public override bool IsVisibleOnChart(ChartControl chartControl, ChartScale chartScale, DateTime firstTimeOnChart, DateTime lastTimeOnChart)
{
if (DrawingState == DrawingState.Building)
{
return(true);
}
float minX = float.MaxValue;
float maxX = float.MinValue;
ChartPanel chartPanel = chartControl.ChartPanels[PanelIndex];
foreach (Point pt in ChartAnchors.Select(a => a.GetPoint(chartControl, chartPanel, chartScale)))
{
minX = (float)Math.Min(minX, pt.X);
maxX = (float)Math.Max(maxX, pt.X);
}
DateTime leftWidthTime = chartControl.GetTimeByX((int)minX);
DateTime rightWidthTime = chartControl.GetTimeByX((int)maxX);
return(leftWidthTime <= lastTimeOnChart && rightWidthTime >= firstTimeOnChart);
}
