UnityEditor.SnapEdge.OppositeEdge C# (CSharp) Method

        internal static EdgeDir OppositeEdge(EdgeDir dir)
        {
            switch (dir)
            {
                case EdgeDir.Left:
                    return EdgeDir.Right;

                case EdgeDir.Right:
                    return EdgeDir.Left;

                case EdgeDir.CenterX:
                    return EdgeDir.CenterX;

                case EdgeDir.Up:
                    return EdgeDir.Down;

                case EdgeDir.Down:
                    return EdgeDir.Up;
            }
            return EdgeDir.CenterY;
        }

 private static bool ShouldEdgesSnap(SnapEdge a, SnapEdge b)
 {
     if ((a.dir == SnapEdge.EdgeDir.CenterX || a.dir == SnapEdge.EdgeDir.CenterY) && a.dir == b.dir)
     {
         return(true);
     }
     if (a.dir == SnapEdge.OppositeEdge(b.dir))
     {
         return(((double)a.start > (double)b.end ? 1 : ((double)a.end < (double)b.start ? 1 : 0)) == 0);
     }
     return(false);
 }