public class Boundaries
    {
        /// <summary>
        /// Create a concave circle list of points.
        /// </summary>
        /// <param name="radius">Radius of the circle.</param>
        /// <param name="numberOfEdges">Number of semi-circular edges (circle smoothness)</param>
        /// <returns>In order collection of polygon vertices.</returns>
        public static Vertices CreateConcaveSemiCircle(float radius, int numberOfEdges)
        {
            float stepSize = (float)Math.PI / (float)numberOfEdges;

            Vertices points = new Vertices();
            points.Add(new Vector2(radius, 0)); // Origin Point, on Right Side

            for (int i = 1; i < numberOfEdges + 1; i++)
            {
                //Moves Counter-Clockwise from Right Side
                points.Add(new Vector2((float)(radius * Math.Cos(stepSize * i)), (float)(-radius * Math.Sin(stepSize * i))));
            }

            points.Add(new Vector2(-radius, 0)); // Left-Most Side

            for (int i = 1; i < numberOfEdges + 1; i++)
            {
                //Moves Counter-Clockwise from Left Side
                points.Add(new Vector2((float)(-radius * Math.Cos(stepSize * i)), (float)(radius * Math.Sin(stepSize * i))));
            }

            points.Add(new Vector2(radius, 0)); // Origin Point, links together shape.

            return points;
        }
    }