Setup rustfmt for everything and address cargo clippy.

rtiow/renderer/rustfmt.toml

@@ -0,0 +1,2 @@
+imports_granularity = "Crate"
+format_code_in_doc_comments = true

rtiow/renderer/src/human.rs

@@ -130,6 +130,12 @@ impl Formatter {
     }
 }
 
+impl Default for Formatter {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl Scales {
     /// Instantiates a new `Scales` with SI keys
     pub fn new() -> Self {
@@ -199,7 +205,7 @@ impl Scales {
             }
         }
 
-        return 0.0;
+        0.0
     }
 
     fn to_scaled_value(&self, value: f64) -> ScaledValue {
@@ -221,3 +227,9 @@ impl Scales {
         }
     }
 }
+
+impl Default for Scales {
+    fn default() -> Self {
+        Self::new()
+    }
+}

rtiow/renderer/src/kdtree.rs

@@ -146,7 +146,7 @@ fn print_tree(f: &mut fmt::Formatter, depth: usize, kdt: &KDTree) -> fmt::Result
 impl fmt::Display for KDTree {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         writeln!(f, "kd-tree")?;
-        print_tree(f, 1, &self)
+        print_tree(f, 1, self)
     }
 }
 impl Hit for KDTree {

rtiow/renderer/src/noise/perlin.rs

@@ -35,7 +35,7 @@ fn perlin_generate_perm<R>(rng: &mut R) -> Vec<usize>
 where
     R: Rng,
 {
-    let mut p: Vec<usize> = (0..256).map(|i| i).collect();
+    let mut p: Vec<usize> = (0..256).collect();
     p.shuffle(rng);
     p
 }

rtiow/renderer/src/output.rs

@@ -98,7 +98,7 @@ pub fn set_pixel(name: &str, x: usize, y: usize, pixel: Vec3) {
     let (_it, img) = debugger
         .images
         .get_mut(name)
-        .expect(&format!("couldn't find image named '{}'", name));
+        .unwrap_or_else(|| panic!("couldn't find image named '{}'", name));
     let y_inv = img.h - y - 1;
     img.put_pixel(x, y_inv, pixel);
 }
@@ -108,7 +108,7 @@ pub fn set_pixel_grey(name: &str, x: usize, y: usize, grey: f32) {
     let (_it, img) = debugger
         .images
         .get_mut(name)
-        .expect(&format!("couldn't find image named '{}'", name));
+        .unwrap_or_else(|| panic!("couldn't find image named '{}'", name));
     let y_inv = img.h - y - 1;
     img.put_pixel(x, y_inv, [grey, grey, grey].into());
 }

rtiow/renderer/src/renderer.rs

@@ -52,17 +52,17 @@ pub enum Model {
 impl Model {
     pub fn scene(&self, opt: &Opt) -> Scene {
         match self {
-            Model::BVH => scenes::bvh::new(&opt),
-            Model::Bench => scenes::bench::new(&opt),
-            Model::Book => scenes::book::new(&opt),
-            Model::CornellBox => scenes::cornell_box::new(&opt),
-            Model::CornellSmoke => scenes::cornell_smoke::new(&opt),
-            Model::Final => scenes::final_scene::new(&opt),
-            Model::Mandelbrot => scenes::mandelbrot::new(&opt),
-            Model::PerlinDebug => scenes::perlin_debug::new(&opt),
-            Model::Spheramid => scenes::spheramid::new(&opt),
-            Model::Test => scenes::test::new(&opt),
-            Model::Tutorial => scenes::tutorial::new(&opt),
+            Model::BVH => scenes::bvh::new(opt),
+            Model::Bench => scenes::bench::new(opt),
+            Model::Book => scenes::book::new(opt),
+            Model::CornellBox => scenes::cornell_box::new(opt),
+            Model::CornellSmoke => scenes::cornell_smoke::new(opt),
+            Model::Final => scenes::final_scene::new(opt),
+            Model::Mandelbrot => scenes::mandelbrot::new(opt),
+            Model::PerlinDebug => scenes::perlin_debug::new(opt),
+            Model::Spheramid => scenes::spheramid::new(opt),
+            Model::Test => scenes::test::new(opt),
+            Model::Tutorial => scenes::tutorial::new(opt),
         }
     }
 }
@@ -155,7 +155,7 @@ pub fn opt_hash(opt: &Opt) -> String {
         opt.pprof.is_some(),
         opt.model.to_string(),
         opt.use_accel,
-        opt.output.display().to_string().replace("/", "_")
+        opt.output.display().to_string().replace('/', "_")
     )
 }
 
@@ -378,7 +378,7 @@ fn trace_pixel_random(x: usize, y: usize, scene: &Scene) -> (Vec3, usize) {
     )
 }
 
-#[derive(Clone, Copy)]
+#[derive(Clone, Copy, Default)]
 struct RenderStats {
     rays: usize,
     pixels: usize,
@@ -412,12 +412,6 @@ fn progress(
     )
 }
 
-impl Default for RenderStats {
-    fn default() -> Self {
-        RenderStats { rays: 0, pixels: 0 }
-    }
-}
-
 enum Request {
     Pixel { x: usize, y: usize },
     Line { width: usize, y: usize },

rtiow/renderer/src/scenes/book.rs

@@ -57,7 +57,6 @@ pub fn new(opt: &Opt) -> Scene {
         height: opt.height,
         global_illumination: true,
         env_map: Some(EnvMap::new(skybox)),
-        ..Default::default()
     }
 }
 

rtiow/renderer/src/scenes/spheramid.rs

@@ -115,6 +115,5 @@ pub fn new(opt: &Opt) -> Scene {
         height: opt.height,
         global_illumination: true,
         env_map: Some(EnvMap::new(skybox)),
-        ..Default::default()
     }
 }

rtiow/renderer/src/texture/mandelbrot.rs

@@ -5,9 +5,7 @@ use rand::Rng;
 use crate::texture::Texture;
 use crate::vec3::Vec3;
 
-#[derive(Debug)]
 pub struct Mandelbrot {
-    scale: f32,
     palette: Vec<Vec3>,
 }
 
@@ -49,7 +47,6 @@ fn generate_palette(num: usize) -> Vec<Vec3> {
 impl Default for Mandelbrot {
     fn default() -> Self {
         Mandelbrot {
-            scale: 2.0,
             palette: generate_palette(10),
         }
     }