private void Chart1_AnnotationPositionChanging(object sender, System.Windows.Forms.DataVisualization.Charting.AnnotationPositionChangingEventArgs e)
{
if (SnapToDataPoint.Checked)
{
// get the annotation object from the AnnotationPositionChangingEventArgs
Annotation annotation = e.Annotation;
if (!float.IsNaN(e.NewAnchorLocation.X))
{
// get the nearest point to the new location
PointF point = FindNearestDataPoint(e.NewAnchorLocation.X, e.NewAnchorLocation.Y);
annotation.AnchorDataPoint = Chart1.Series[0].Points[(int)point.X - 1];
e.NewAnchorLocationX = point.X;
e.NewAnchorLocationY = point.Y;
}
}
else
{
if (!float.IsNaN(e.NewAnchorLocation.X) && e.NewAnchorLocation.X > Chart1.ChartAreas[0].AxisX.Maximum)
{
e.NewAnchorLocationX = (float)(Chart1.ChartAreas[0].AxisX.Maximum);
}
else if (!float.IsNaN(e.NewAnchorLocation.X) && e.NewAnchorLocation.X < Chart1.ChartAreas[0].AxisX.Minimum)
{
e.NewAnchorLocationX = 0;
}
if (!float.IsNaN(e.NewAnchorLocation.X) && e.NewAnchorLocation.Y > Chart1.ChartAreas[0].AxisY.Maximum)
{
e.NewAnchorLocationY = (float)(Chart1.ChartAreas[0].AxisY.Maximum);
}
else if (!float.IsNaN(e.NewAnchorLocation.Y) && e.NewAnchorLocation.Y < 1)
{
e.NewAnchorLocationY = 1;
}
}
}
private void chart_AnnotationPositionChanging(object sender, AnnotationPositionChangingEventArgs e) {
int classIndex = (int)e.Annotation.Tag;
double[] thresholds = Content.Model.Thresholds.ToArray();
thresholds[classIndex] = e.NewLocationY;
Array.Sort(thresholds);
Content.Model.SetThresholdsAndClassValues(thresholds, Content.Model.ClassValues);
}
private void chart_AnnotationPositionChanging(object sender, AnnotationPositionChangingEventArgs e) {
var step = (trainingMax - trainingMin) / drawingSteps;
double newLocation = step * (long)Math.Round(e.NewLocationX / step);
var axisX = chart.ChartAreas[0].AxisX;
if (newLocation >= axisX.Maximum)
newLocation = axisX.Maximum - step;
if (newLocation <= axisX.Minimum)
newLocation = axisX.Minimum + step;
e.NewLocationX = newLocation;
UpdateCursor();
}
