ft: moved random scene code to function; cleaned up tri/quad/cube hit logic; made camera attributes private

src/objects/materials/texture.rs

@@ -7,6 +7,11 @@ use crate::{
     vec3::Vec3,
 };
 
+// TODO: overhaul texture implementation so we can support textures for arbitrary materials.
+// Basically remove this struct, and instead make lambertian/metal/dielectric/take either a texture
+// or a flat colour
+// I think we can use an enum ColourSource with a function to fetch a specific colour depending on
+// if we have a texture/flat colour. and yeah.
 #[derive(Debug)]
 pub struct Texture {
     source: DynamicImage,
@@ -48,7 +53,7 @@ impl Texture {
     }
 
     fn _idx(&self, u: f32, v: f32) -> usize {
-        let x: usize = (u * ((self.width - 1) as f32)) as usize; // TODO: check these calcs work
+        let x: usize = (u * ((self.width - 1) as f32)) as usize; 
         let y: usize = (v * ((self.height - 1) as f32)) as usize;
 
         y * self.width as usize + x