I'm working with a GridSurface chart with millions of points.  I want some double-click behaviors as follows:

1. Double-click the legend or the vertical axis... bring up a scaling dialog
2. Double-click the plot or the walls... restore the viewing angle (elevation, rotation, zoom, height)

My problem is that the hit test is very slow when I have a million or so points.  The use will double-click, and then double-click again thinking that the first one wasn't handled.

private void nChartControl1_MouseDoubleClick(object sender, MouseEventArgs e)
{
   // this handler is called immediately after the double click, but the HitTest function takes too much time. 
   NHitTestResult result = nChartControl1.HitTest(e.X, e.Y);
   // do something with "result"
}

Is there anyway I can do a hit test in a faster way?  Perhaps ignore the plot and just check for walls, legend and axes?

Thanks,
 
    - Mark

Since my data sets are huge... is there a quick way to remove it prior to the hit test and then quickly restore it after the hit test?

Hi Mark,
You can set the Visible property of the surface series to false before hit testing and then to true again when hit testing is done. We may also consider to implement a hardware accelerated hit test for the new release.

Best Regards,
Nevron Support Team