/// <summary>
/// Draw the 2-point stencil drag points
/// </summary>
/// <param name="e">the canvas</param>
/// <param name="zoomFactor">the zoom factor</param>
public void Draw(SKCanvas e, float zoomFactor)
{
if (e == null)
{
throw new ArgumentNullException(nameof(e));
}
if (zoomFactor <= 0)
{
throw new ArgumentOutOfRangeException(nameof(zoomFactor), $"zoomFactor cannot be less than or equal to 0: {zoomFactor}.");
}
using var paint2 = new SKPaint
{
Color = Color.Red.ToSKColor().WithAlpha(128),
IsStroke = false,
};
e.DrawCircle(Point1.ToSKPoint(), Radius / zoomFactor, paint2);
e.DrawCircle(Point2.ToSKPoint(), Radius / zoomFactor, paint2);
}