// Dot Product (Inner Product)
public static long DotProduct(long2 A, long2 B)
{
return(A.x * B.x + A.y * B.y);
}
// Cross Product returns last component of (Ax,Ay,0) x (Bx,By,0)
public static long CrossProduct(long2 A, long2 B)
{
return(A.x * B.y - A.y * B.x);
}
public long2(long2 A)
{
this.x = A.x;
this.y = A.y;
}