Ray Tracing in One Weekend (Rust)

A Scene with Metal Spheres

Now let’s add some metal spheres to our scene:

diff --git a/src/main.rs b/src/main.rs
index a016213..4f0fceb 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,17 +1,46 @@
-use code::{camera::Camera, hittable_list::HittableList, prelude::*, sphere::Sphere};
+use code::{
+    camera::Camera,
+    hittable_list::HittableList,
+    material::{Lambertian, Metal},
+    prelude::*,
+    sphere::Sphere,
+};
 
 fn main() -> std::io::Result<()> {
     let mut world = HittableList::new();
 
-    world.add(Rc::new(Sphere::new(Point3::new(0.0, 0.0, -1.0), 0.5)));
-    world.add(Rc::new(Sphere::new(Point3::new(0.0, -100.5, -1.0), 100.0)));
+    let material_ground = Rc::new(Lambertian::new(Color::new(0.8, 0.8, 0.0)));
+    let material_center = Rc::new(Lambertian::new(Color::new(0.1, 0.2, 0.5)));
+    let material_left = Rc::new(Metal::new(Color::new(0.8, 0.8, 0.8)));
+    let material_right = Rc::new(Metal::new(Color::new(0.8, 0.6, 0.2)));
+
+    world.add(Rc::new(Sphere::new(
+        Point3::new(0.0, -100.5, -1.0),
+        100.0,
+        material_ground,
+    )));
+    world.add(Rc::new(Sphere::new(
+        Point3::new(0.0, 0.0, -1.2),
+        0.5,
+        material_center,
+    )));
+    world.add(Rc::new(Sphere::new(
+        Point3::new(-1.0, 0.0, -1.0),
+        0.5,
+        material_left,
+    )));
+    world.add(Rc::new(Sphere::new(
+        Point3::new(1.0, 0.0, -1.0),
+        0.5,
+        material_right,
+    )));
 
     env_logger::init();
 
     Camera::default()
         .with_aspect_ratio(16.0 / 9.0)
         .with_image_width(400)
         .with_samples_per_pixel(100)
         .with_max_depth(50)
         .render(&world)
 }

Listing 68: [main.rs] Scene with metal spheres

Which gives:

Image 13: Shiny metal