/// <summary>
/// Gets the first and second value of a point (should only be used for Line, Ellipsis, Rectangle annotations)
/// and uses a selector function to select one of the values.
/// </summary>
private float ValComp(Func <float, float, float> selector, Func <AnnotationPoint, float> get)
{
if (Annotation.Points.Count < 2)
{
return(0);
}
var pt1 = AnnotationPointTransformer.ConvertFromStandardRangeToSurface(Annotation.Points[0], _surfaceSize);
var pt2 = AnnotationPointTransformer.ConvertFromStandardRangeToSurface(Annotation.Points[1], _surfaceSize);
return(selector(get(pt1), get(pt2)));
}
/// <summary>
/// Gets the point at an index and converts it to a float value
/// </summary>
private float ValAtIndex(int index, Func <AnnotationPoint, float> get)
{
return(get(AnnotationPointTransformer.ConvertFromStandardRangeToSurface(Annotation.Points[index], _surfaceSize)));
}
