/*
* Function which returns the angle between to instances of Vector2D.
*/
public double GetAngleBetween(Vector2D b)
{
double hyp1 = this.GetLength();
double ank1 = this.x;
double hyp2 = b.GetLength();
double ank2 = b.X;
return(Math.Acos(ank1 / hyp1) - Math.Acos(ank2 / hyp2));
}
/*
* Function which returns the angle between to instances of Vector2D.
*/
public double GetAngleBetween(Vector2D b)
{
double angle = Dot(b) / (this.GetLength() * b.GetLength());
angle = (180 / Math.PI) * Math.Acos(angle);
if (Cross(b) >= 0)
{
angle = -angle;
}
return(angle);
}
public static double LengthSQ(Vector2D p)
{
return(p.GetLength() * p.GetLength());
}
/*
* Function to which calculates the Distance, between this instance and another Vector2D, as a double.
*/
public double GetDistance(Vector2D point)
{
Vector2D vector = new Vector2D(this.x - point.X, this.y - point.Y);
return(vector.GetLength());
}