/// <summary>
/// Calculates the square distance of the point to the polyline.
/// </summary>
/// <param name="polyline">The polyline.</param>
/// <param name="point">The point.</param>
/// <returns>Returns the squared distance.</returns>
public static float SqrDistance(this IPolyline polyline, Vector3 point)
{
return((point - polyline.ClosestPoint(point)).sqrMagnitude);
}