public void Minus(BitVector2 v)
{
x = x - v.x;
y = y - v.y;
}
public static BitFloat Dot(BitVector2 a, BitVector2 b)
{
return(a.x * b.x + a.y * b.y);
}
public void Add(BitVector2 v)
{
x = x + v.x;
y = y + v.y;
}