annotations/Azaion.Annotator/Extensions/PointExtensions.cs

using System.Windows;

namespace Azaion.Annotator.Extensions;

public static class PointExtensions
{
    public static double SqrDistance(this Point p1, Point p2) =>
        (p2.X - p1.X) * (p2.X - p1.X) + (p2.Y - p1.Y) * (p2.Y - p1.Y);
}