/// <summary>
/// Normal from the line to the point
/// </summary>
public static PointF Normal(this PointF direction, PointF point)
{
var cosAngle = (point.X * direction.X + point.Y * direction.Y) / direction.LengthSquare();
var x = direction.X * cosAngle;
var y = direction.Y * cosAngle;
return(new PointF(point.X - x, point.Y - y));
}
