More spheres, formatting

src/camera.rs

@@ -9,7 +9,6 @@ pub struct Camera {
     v: Vec3,
     w: Vec3,
     lens_radius: f64,
-
 }
 
 impl Camera {
@@ -23,8 +22,8 @@ impl Camera {
         focus_dist: f64,
     ) -> Self {
         let theta = vfov.to_radians();
-        let h = (theta/2.0).tan();
+        let h = (theta / 2.0).tan();
-        let viewport_height = 2.0*h;
+        let viewport_height = 2.0 * h;
         let viewport_width = aspect_ratio * viewport_height;
 
         let w = Vec3::unit_vector(lookfrom - lookat);
@@ -34,7 +33,7 @@ impl Camera {
         let origin = lookfrom;
         let horizontal = focus_dist * viewport_width * u;
         let vertical = focus_dist * viewport_height * v;
-        let lower_left_corner = origin - horizontal/2.0 - vertical/2.0 - focus_dist*w;
+        let lower_left_corner = origin - horizontal / 2.0 - vertical / 2.0 - focus_dist * w;
 
         let lens_radius = aperture / 2.0;
 
@@ -51,13 +50,12 @@ impl Camera {
     }
 
     pub fn get_ray(&self, u: f64, v: f64) -> Ray {
-
         let rd = self.lens_radius * Vec3::random_in_unit_disk();
         let offset = rd.x() * self.u + rd.y() * self.v;
 
         return Ray::new(
             self.origin + offset,
             self.lower_left_corner + u * self.horizontal + v * self.vertical - self.origin - offset,
-        )
+        );
     }
 }

src/hittable.rs

@@ -1,12 +1,4 @@
-use super::{
+use super::{Arc, Color, Material, Metal, Point3, Ray, Vec3};
-    Point3,
-    Vec3,
-    Color,
-    Ray,
-    Material,
-    Arc,
-    Metal
-};
 
 pub struct HitRecord {
     pub p: Point3,

src/main.rs

@@ -4,22 +4,22 @@ mod camera;
 mod color;
 mod hittable;
 mod hittable_list;
+mod material;
 mod ray;
 mod utility;
 mod vec3;
-mod material;
 
 use camera::Camera;
 use hittable::{HitRecord, Hittable, Sphere};
 use hittable_list::HittableList;
 use image::{Rgb, RgbImage};
+use material::{Dielectric, Lambertian, Material, Metal};
 use ray::Ray;
 use rayon::prelude::*;
 use std::env;
 use std::sync::atomic::{AtomicU32, Ordering};
 use std::sync::Arc;
 use vec3::{Color, Point3, Vec3};
-use material::{Material, Lambertian, Metal, Dielectric};
 
 fn ray_color(r: &Ray, world: &HittableList, depth: u32) -> Color {
     let mut rec = HitRecord::empty();
@@ -31,8 +31,11 @@ fn ray_color(r: &Ray, world: &HittableList, depth: u32) -> Color {
     if world.hit(r, 0.001, f64::INFINITY, &mut rec) {
         let mut scattered = Ray::new(Point3::null(), Vec3::null());
         let mut attenuation = Color::null();
-        if rec.mat_ptr.scatter(r, &rec, &mut attenuation, &mut scattered) {
+        if rec
-            return attenuation * ray_color(&scattered, world, depth-1);
+            .mat_ptr
+            .scatter(r, &rec, &mut attenuation, &mut scattered)
+        {
+            return attenuation * ray_color(&scattered, world, depth - 1);
         }
         return Color::null();
 
@@ -47,61 +50,62 @@ fn ray_color(r: &Ray, world: &HittableList, depth: u32) -> Color {
 fn random_world() -> HittableList {
     let mut world = HittableList::new();
 
-    let material_ground = Arc::new(Lambertian::new(&Color::new(0.1, 0.1, 0.1)));
+    let material_ground = Arc::new(Lambertian::new(&Color::new(0.01, 0.01, 0.01)));
-    
-    //let material_center = Arc::new(Lambertian::new(&Color::new(0.7, 0.1, 0.2)));
-    //let material_center = Arc::new(Dielectric::new(1.5));
-    //let material_blue = Arc::new(Lambertian::new(&Color::new(0.2, 0.1, 0.7)));
-    //let material_metal = Arc::new(Metal::new(&Color::new(0.8, 0.8, 0.8), 0.1));
-    //let material_metal_fuzz = Arc::new(Metal::new(&Color::new(0.8, 0.8, 0.8), 1.0));
-    //let material_mirror = Arc::new(Metal::new(&Color::new(0.8, 0.8, 0.8), 0.0));
-    //let material_dielectric = Arc::new(Dielectric::new(1.5));
-    //let material_light = Arc::new(Lambertian::new(&Color::new(2.0, 1.0, 0.0)));
-
-
-
 
     world.add(Box::<Sphere>::new(Sphere::new(
-        Point3::new(0.0, -1000.0, 0.0),
+        Point3::new(0.0, -50000.0, 0.0),
-        1000.0,
+        50000.0,
         material_ground.clone(),
     )));
 
     (-6..5).into_iter().for_each(|a| {
         (-6..5).into_iter().for_each(|b| {
             let choose_mat = utility::random_f64();
-            let center = Point3::new(a as f64 + 0.9 * utility::random_f64(), 0.2, b as f64 + 0.9 * utility::random_f64());
+            let center = Point3::new(
+                1.5 * a as f64 + 1.3 * utility::random_f64(),
+                0.2,
+                1.5 * b as f64 + 1.3 * utility::random_f64(),
+            );
             if (center - Point3::new(4.0, 0.2, 0.0)).length() > 0.9 {
-                if choose_mat < 0.8 { // diffuse
+                if choose_mat < 0.8 {
-                    let sphere_material = Arc::new(Lambertian::new(&(Color::random_f64() * Color::random_f64())));
+                    // diffuse
+                    let sphere_material = Arc::new(Lambertian::new(
+                        &(Color::random_f64() * Color::random_f64()),
+                    ));
                     world.add(Box::<Sphere>::new(Sphere::new(
                         center,
                         0.2,
-                        sphere_material.clone()
+                        sphere_material.clone(),
                     )));
-                } else if choose_mat < 0.95 { // metal
+                } else if choose_mat < 0.95 {
-                    let sphere_material = Arc::new(Metal::new(&Color::random_rng(0.5, 1.0), utility::random_rng(0.0, 0.5)));
+                    // metal
+                    let sphere_material = Arc::new(Metal::new(
+                        &Color::random_rng(0.5, 1.0),
+                        utility::random_rng(0.0, 0.5),
+                    ));
                     world.add(Box::<Sphere>::new(Sphere::new(
                         center,
                         0.2,
-                        sphere_material.clone()
+                        sphere_material.clone(),
                     )));
-                } else { // glass
+                } else {
+                    // glass
                     let sphere_material = Arc::new(Dielectric::new(1.5));
                     world.add(Box::<Sphere>::new(Sphere::new(
                         center,
                         0.2,
-                        sphere_material.clone()
+                        sphere_material.clone(),
                     )));
                 }
-                
             }
         });
     });
 
     let material1 = Arc::new(Dielectric::new(1.5));
-    let material3 = Arc::new(Metal::new(&Color::new(0.7, 0.6, 0.5), 0.0));
     let material2 = Arc::new(Lambertian::new(&Color::new(0.4, 0.2, 0.1)));
+    let material3 = Arc::new(Metal::new(&Color::new(0.7, 0.6, 0.5), 0.0));
+    let material4 = Arc::new(Dielectric::new(2.0));
+    let material5 = Arc::new(Metal::new(&Color::new(0.9, 0.9, 0.7), 0.0));
 
     world.add(Box::<Sphere>::new(Sphere::new(
         Point3::new(0.0, 1.0, 0.0),
@@ -121,41 +125,17 @@ fn random_world() -> HittableList {
         material3.clone(),
     )));
 
-    /*
     world.add(Box::<Sphere>::new(Sphere::new(
-        Point3::new(-2.0*r, 0.1, -2.0),
+        Point3::new(-2.0, 2.0, -5.0),
-        r,
+        2.0,
-        material_dielectric.clone(),
+        material4.clone(),
     )));
-    world.add(Box::<Sphere>::new(Sphere::new(
-        Point3::new(r, 0.0, -1.0),
-        r,
-        material_dielectric.clone(),
-    )));
-    world.add(Box::<Sphere>::new(Sphere::new(
-        Point3::new(-1.5, 1.3, -1.7),
-        0.4,
-        material_mirror.clone(),
-    )));
-    world.add(Box::<Sphere>::new(Sphere::new(
-        Point3::new(-0.5, 0.5, 1.0),
-        0.4,
-        material_blue.clone(),
-    )));
-    world.add(Box::<Sphere>::new(Sphere::new(
-        Point3::new(0.5, 1.0, 0.3),
-        0.3,
-        material_light.clone(),
-    )));
-    */
 
-    /*
+    world.add(Box::<Sphere>::new(Sphere::new(
-    for i in -15..15 {
+        Point3::new(-3.6, 2.0, -2.0),
-        for j in -15..15 {
+        0.6,
-            world.add(Box::<Sphere>::new(Sphere::new(Point3::new(j as f64/5.0 as f64, i as f64/5.0 as f64, -1.5), 0.08)));
+        material5.clone(),
-        }
+    )));
-    }
-    */
 
     return world;
 }
@@ -166,23 +146,31 @@ fn main() {
 
     // Image
     let aspect_ratio = 16.0 / 9.0;
-    let image_width = 1920;
+    let image_width = 1000;
     let image_height = (image_width as f64 / aspect_ratio) as u32;
     let samples_per_pixel = 100_u32;
     let max_depth = 50;
 
-    let vfov = 20.0;
+    let vfov = 25.0;
-    let lookfrom = Point3::new(10.0, 10.0, 13.0);
+    let lookfrom = Point3::new(10.0, 4.0, 13.0);
     let lookat = Point3::new(0.0, 0.0, 0.0);
     let vup = Vec3::new(0.0, 1.0, 0.0);
-    let dist_to_focus = 15.0;
+    let dist_to_focus = 17.0;
     let aperture = 0.1;
 
     // World
     let world = random_world();
 
     // Camera
-    let cam = Camera::new(lookfrom, lookat, vup, vfov, aspect_ratio, aperture, dist_to_focus);
+    let cam = Camera::new(
+        lookfrom,
+        lookat,
+        vup,
+        vfov,
+        aspect_ratio,
+        aperture,
+        dist_to_focus,
+    );
 
     // Render
     let args: Vec<String> = env::args().collect();

src/material.rs

@@ -1,10 +1,4 @@
-use super::{
+use super::{utility, Color, HitRecord, Ray, Vec3};
-    Ray,
-    HitRecord,
-    Color,
-    Vec3,
-    utility,
-};
 
 pub struct Lambertian {
     albedo: Color,
@@ -23,21 +17,30 @@ pub struct Dielectric {
     ir: f64,
 }
 
-
 pub trait Material: Sync + Send {
-    fn scatter(&self,r_in: &Ray, rec: &HitRecord, attenuation: &mut Color, scattered: &mut Ray) -> bool;
+    fn scatter(
+        &self,
+        r_in: &Ray,
+        rec: &HitRecord,
+        attenuation: &mut Color,
+        scattered: &mut Ray,
+    ) -> bool;
 }
 
 impl Lambertian {
     pub fn new(a: &Color) -> Self {
-        Lambertian {
+        Lambertian { albedo: a.clone() }
-            albedo: a.clone(),
-        }
     }
 }
 
 impl Material for Lambertian {
-    fn scatter(&self, _r_in: &Ray, rec: &HitRecord, attenuation: &mut Color, scattered: &mut Ray) -> bool {
+    fn scatter(
+        &self,
+        _r_in: &Ray,
+        rec: &HitRecord,
+        attenuation: &mut Color,
+        scattered: &mut Ray,
+    ) -> bool {
         let mut scatter_direction = rec.normal + Vec3::random_unit_vector();
 
         if scatter_direction.near_zero() {
@@ -60,10 +63,16 @@ impl Metal {
 }
 
 impl Material for Metal {
-    fn scatter(&self, r_in: &Ray, rec: &HitRecord, attenuation: &mut Color, scattered: &mut Ray) -> bool {
+    fn scatter(
+        &self,
+        r_in: &Ray,
+        rec: &HitRecord,
+        attenuation: &mut Color,
+        scattered: &mut Ray,
+    ) -> bool {
         let reflected = Vec3::reflect(&Vec3::unit_vector(r_in.direction()), &rec.normal);
 
-        *scattered = Ray::new(rec.p, reflected + self.fuzz*Vec3::random_in_unit_sphere());
+        *scattered = Ray::new(rec.p, reflected + self.fuzz * Vec3::random_in_unit_sphere());
         *attenuation = self.albedo.clone();
 
         return Vec3::dot(scattered.direction(), rec.normal) > 0.0;
@@ -72,22 +81,27 @@ impl Material for Metal {
 
 impl Mirror {
     pub fn new(a: &Color) -> Self {
-        Mirror {
+        Mirror { albedo: *a }
-            albedo: *a,
-        }
     }
 }
 
 impl Material for Mirror {
-    fn scatter(&self, r_in: &Ray, rec: &HitRecord, attenuation: &mut Color, scattered: &mut Ray) -> bool {
+    fn scatter(
-        if utility::random_f64() > 0.8 { // Reflektiert
+        &self,
+        r_in: &Ray,
+        rec: &HitRecord,
+        attenuation: &mut Color,
+        scattered: &mut Ray,
+    ) -> bool {
+        if utility::random_f64() > 0.8 {
+            // Reflektiert
             let reflected = Vec3::reflect(&Vec3::unit_vector(r_in.direction()), &rec.normal);
             *scattered = Ray::new(rec.p, reflected);
             *attenuation = self.albedo.clone();
 
             return Vec3::dot(scattered.direction(), rec.normal) > 0.0;
-
+        } else {
-        } else { // Geht geradeaus durch
+            // Geht geradeaus durch
             let reflected = r_in.direction().clone();
             *scattered = Ray::new(rec.p, reflected);
 
@@ -106,23 +120,36 @@ impl Dielectric {
     }
 
     fn reflectance(cosine: f64, ref_idx: f64) -> f64 {
-        let r0 = ((1.0-ref_idx) / (1.0+ref_idx)).powi(2);
+        let r0 = ((1.0 - ref_idx) / (1.0 + ref_idx)).powi(2);
-        return r0 + (1.0-r0)*(1.0 - cosine).powi(5);
+        return r0 + (1.0 - r0) * (1.0 - cosine).powi(5);
     }
 }
 
 impl Material for Dielectric {
-    fn scatter(&self, r_in: &Ray, rec: &HitRecord, attenuation: &mut Color, scattered: &mut Ray) -> bool {
+    fn scatter(
+        &self,
+        r_in: &Ray,
+        rec: &HitRecord,
+        attenuation: &mut Color,
+        scattered: &mut Ray,
+    ) -> bool {
         *attenuation = Color::new(1.0, 1.0, 1.0);
-        let refraction_ratio = if rec.front_face { 1.0 / self.ir } else { self.ir };
+        let refraction_ratio = if rec.front_face {
+            1.0 / self.ir
+        } else {
+            self.ir
+        };
 
         let unit_direction = Vec3::unit_vector(r_in.direction());
         let cos_theta = Vec3::dot(-1.0 * unit_direction, rec.normal).min(1.0);
-        let sin_theta = (1.0 - cos_theta*cos_theta).sqrt();
+        let sin_theta = (1.0 - cos_theta * cos_theta).sqrt();
 
         let mut direction = Vec3::refract(&unit_direction, &rec.normal, refraction_ratio); // can reflect
 
-        if refraction_ratio * sin_theta > 1.0 || Dielectric::reflectance(cos_theta, refraction_ratio) > utility::random_f64() { // must reflect
+        if refraction_ratio * sin_theta > 1.0
+            || Dielectric::reflectance(cos_theta, refraction_ratio) > utility::random_f64()
+        {
+            // must reflect
             direction = Vec3::reflect(&unit_direction, &rec.normal);
         }
 

src/vec3.rs

@@ -47,7 +47,7 @@ impl Vec3 {
     }
 
     pub fn reflect(v: &Self, n: &Self) -> Self {
-        *v - 2.0*Self::dot(*v, *n) * *(n)
+        *v - 2.0 * Self::dot(*v, *n) * *(n)
     }
 
     pub fn refract(uv: &Self, n: &Self, etai_over_etat: f64) -> Self {
@@ -90,7 +90,11 @@ impl Vec3 {
 
     pub fn random_in_unit_disk() -> Self {
         loop {
-            let p = Vec3::new(utility::random_rng(-1.0, 1.0), utility::random_rng(-1.0, 1.0), 0.0);
+            let p = Vec3::new(
+                utility::random_rng(-1.0, 1.0),
+                utility::random_rng(-1.0, 1.0),
+                0.0,
+            );
             if p.length_squared() >= 1.0 {
                 continue;
             }
@@ -166,7 +170,7 @@ impl Mul<Self> for Vec3 {
     type Output = Self;
 
     fn mul(self, rhs: Self) -> Self {
-        Self::new(self.x()*rhs.x(), self.y()*rhs.y(), self.z()*rhs.z())
+        Self::new(self.x() * rhs.x(), self.y() * rhs.y(), self.z() * rhs.z())
     }
 }