public static Hitable_List Two_Perlin_Spheres() { Hitable_List objects = new Hitable_List(); var pertext = new Noise_texture(); objects.Add(new Sphere(new Vector3(0, -1000, 0), 1000, new Lambertian(pertext))); objects.Add(new Sphere(new Vector3(0, 2, 0), 2, new Lambertian(pertext))); return(objects); }
static void Main(string[] args) { float aspect_ratio = 16.0f / 9.0f; int image_width = 384; int image_height = (int)(image_width / aspect_ratio); int samples_per_pixel = 100; int max_depth = 50; string filePath = "image.ppm"; using (var file = new StreamWriter(filePath)) { file.WriteLine($"P3\n{image_width} {image_height}\n255"); float viewport_height = 2.0f; float viewport_width = aspect_ratio * viewport_height; float focal_length = 1.0f; var origin = Vector3.Zero; var horizontal = new Vector3(viewport_width, 0, 0); var vertical = new Vector3(0, viewport_height, 0); var lower_left_corner = origin - horizontal / 2 - vertical / 2 - new Vector3(0, 0, focal_length); Hitable_List world = Two_Perlin_Spheres(); Vector3 lookfrom = new Vector3(13, 2, 3); Vector3 lookat = new Vector3(0, 0, 0); Vector3 vup = new Vector3(0, 1, 0); float dist_to_focus = 10.0f; float aperture = 0.0f; Camera cam = new Camera(lookfrom, lookat, vup, 20, aspect_ratio, aperture, dist_to_focus, 0.0f, 1.0f); for (int j = image_height - 1; j >= 0; --j) { Console.WriteLine($"\rScanlines remaining: {j}"); for (int i = 0; i < image_width; ++i) { Vector3 pixel_color = Vector3.Zero; for (int s = 0; s < samples_per_pixel; ++s) { float u = (float)(i + Helpers.random.NextDouble()) / (image_width - 1); float v = (float)(j + Helpers.random.NextDouble()) / (image_height - 1); Ray r = cam.Get_Ray(u, v); pixel_color += Ray_color(r, world, max_depth); } Write_color(file, pixel_color, samples_per_pixel); } } Console.WriteLine("Done."); } }
public BVH_Node(Hitable_List list, float time0, float time1) : this(list.Objects, 0, (uint)list.Objects.Count, time0, time1) { }