public static Vector GetNormalToVector(Vector pos, Vector ballPos, Vector ballDirection)
{
var hypotenuse = (pos - ballPos);
var dotProduct = hypotenuse.Dot(ballDirection);
var magnitudeH = Math.Sqrt(hypotenuse.X * hypotenuse.X + hypotenuse.Y * hypotenuse.Y);
var magnituteD = Math.Sqrt(ballDirection.X * ballDirection.X + ballDirection.Y * ballDirection.Y);
var cos = dotProduct / (magnitudeH * magnituteD);
//var angle = Math.Acos(cos);
var directionLength = hypotenuse.Length * cos;
var scaledDirection = ballDirection.Unit() * directionLength;
var result = (ballPos + scaledDirection) - pos;
return result;
}
