void render(bitmap_image& image, const std::vector<Sphere>& scene, bool perspective) {
    // TODO: implement ray tracer
    Camera camera = Camera(Vector(0,5,-25),Vector(0,1,0), Vector(0,0,0), 600);

    //setting the bounds for the window
    int l,r,b,t;
    l=-5;
    r=5;
    t=5;
    b=-5;
    float *t1;
    float *t2;


    for(int y=0;y<image.height();y++) {
        for (int x = 0; x < image.width(); x++) {
            rgb_t color = make_colour(75, 156, 211);
            image.set_pixel(x, y, color);
        }
    }

    std::size_t max = image.width() * image.height();
    std::size_t cores = std::thread::hardware_concurrency();
    volatile std::atomic<std::size_t> count(0);
    std::vector<std::future<void>> future_vector;

    while (cores--)
        future_vector.emplace_back(
            std::async([=, &image, &count]()
    {
        while (true)
        {
            std::size_t index = count++;
            if (index >= max)
                break;
            int x = index % image.width();
            int y = index / image.width();


                        for(int i = scene.size()-1; i>=0; i--){
                            float ui = l + (r-l)*(x+.5) / image.width();
                            float vj = b + (t-b)*(y+.5) / image.height();
//                            Vector camera = Vector(0,0,-10);
                            Vector direction = Vector(ui,vj,-10);
                            Sphere sphere = scene.at(i);
                            Ray newRay = Ray(camera.position, (direction-camera.position),1);
                            Intersection intersect = sphere.intersect(newRay);
                            RayTracer raytracer;

                            bool hit = intersect.didIntersect;
                            if (hit) {
//                                std::cout << "hit" << std::endl;
                                raytracer.performLighting(intersect, sphere.color);
                                rgb_t color = make_colour(raytracer.performLighting(intersect, intersect.color).r * 255,
                                                          raytracer.performLighting(intersect, intersect.color).g * 255,
                                                          raytracer.performLighting(intersect, intersect.color).b * 255);
                                image.set_pixel(x, image.height()-y, color);
                            }
                        }
                    }
                }));


        image.save_image("../img/new.bmp");




    }