// Instance Methods
public double DotProduct(Vector3D a)
{
return a.x * x + a.y * y + a.z * z;
}
public Vector3D CrossProduct(Vector3D b)
{
double p = y * b.z - z * b.y;
double q = z * b.x - x * b.z;
double r = x * b.y - y * b.x;
return new Vector3D(p, q, r);
}
public static Vector3D CrossProduct(Vector3D a, Vector3D b)
{
return a.CrossProduct(b);
}
// Static methods
public static double DotProduct(Vector3D a, Vector3D b)
{
return a.DotProduct(b);
}
public Vector3D(Vector3D a)
{
x = a.x; y = a.y; z = a.z;
}
