/// <summary>
/// Returns true if Circle c moving to location x, y will not collide with another Circle, false if it will collide.
/// </summary>
/// <param name="c">Circle to check for collision.</param>
/// <param name="x">The new x-coordinate.</param>
/// <param name="y">The new y-coordinate.</param>
/// <returns><code>true</code> if the move is valid, <code>false</code> otherwise.</returns>
public bool IsValidMove(T c, double x, double y)
{
return(_rootNode.IsValidMove(c, x, y));
}
