/// <summary>
/// This method is used in internally by the <see cref="AnnotationResizeAdorner" />. Gets the adorner point positions
/// </summary>
/// <param name="coordinates">The previously calculated <see cref="AnnotationCoordinates"/> in screen pixels.</param>
/// <returns>A list of points in screen pixels denoting the Adorner corners</returns>
protected override Point[] GetBasePoints(AnnotationCoordinates coordinates)
{
var lineAnnotations = Annotations;
var count = lineAnnotations.Count();
var points = new Point[count];
for (int i = 0; i < count; i++)
{
var annotation = lineAnnotations[i];
var xCoord = XAxis.GetCoordinate(annotation.X1);
var yCoord = YAxis.GetCoordinate(annotation.Y1);
points[i] = new Point(xCoord, yCoord);
}
return(points);
}