public void PlotMouseDown(LinearBarSeries lb, MapStatistics ms, OxyMouseDownEventArgs e)
{
if (lb.Points.Count != 0)
{
DataPoint dd = new DataPoint(lb.InverseTransform(e.Position).X, lb.InverseTransform(e.Position).Y);
ms._startPoint1 = dd;
}
}
public void PlotMouseMove(LinearBarSeries lb, MapStatistics ms, OxyMouseEventArgs e)
{
if (lb.Points.Count != 0)
{
ms._endPoint1 = lb.InverseTransform(e.Position);
if (ms._startPoint1.X != 0 || ms._startPoint1.Y != 0)
{
ms._pm.Annotations.Clear();
var rectangle = new PolygonAnnotation();
rectangle.Layer = AnnotationLayer.BelowAxes;
rectangle.StrokeThickness = 0.5;
rectangle.Stroke = OxyColors.Red;
rectangle.Fill = OxyColors.Transparent;
rectangle.LineStyle = OxyPlot.LineStyle.Dot;
rectangle.Points.Add(new DataPoint(ms._startPoint1.X, ms._startPoint1.Y));
rectangle.Points.Add(new DataPoint(ms._endPoint1.X, ms._startPoint1.Y));
rectangle.Points.Add(new DataPoint(ms._endPoint1.X, ms._endPoint1.Y));
rectangle.Points.Add(new DataPoint(ms._startPoint1.X, ms._endPoint1.Y));
ms._pm.Annotations.Add(rectangle as Annotation);
ms._pm.InvalidatePlot(true);
}
}
}