Plane

int Plane::FindInter(const Ray &ray_cp, double &t)
{
    // Uwaga: parametry A, B, C plaszczyzny to po prostu skladowe jej wektora normalnego

    double tt = (-(ray_cp.Point()[0] * normal[0] + ray_cp.Point()[1] * normal[1] + ray_cp.Point()[2] * normal[2] + d))
        / (normal[0] * ray_cp.Direction()[0] + normal[1] * ray_cp.Direction()[1] + normal[2] * ray_cp.Direction()[2]);;
    if (tt>0.001 && tt < t)
    {
        t = tt;
        return 1;
    }
    return 0;
}