Some minor cleanup recommended by clippy

src/raycasting/bounding_volume_hierarchy.rs

@@ -69,11 +69,10 @@ impl<T: Real> BoundingVolumeHierarchy<T> {
                 right,
             }
         } else if nodes.len() == 1 {
-            match nodes[0] {
+            let (bounds, ref primitive) = nodes[0];
-                (bounds, ref primitive) => BoundingVolumeHierarchy::Leaf {
+            BoundingVolumeHierarchy::Leaf {
                 bounds,
                 primitive: Arc::clone(primitive),
-                },
             }
         } else {
             BoundingVolumeHierarchy::None
@@ -202,7 +201,7 @@ impl<T: Real> Iterator for FilterIterator<'_, T> {
                 BoundingVolumeHierarchy::None => {}
             }
         }
-        return Option::None;
+        Option::None
     }
 }
 

src/util/interval.rs

@@ -39,11 +39,11 @@ impl<T: Real> Interval<T> {
     }
 
     pub fn get_min(&self) -> T {
-        return self.min;
+        self.min
     }
 
     pub fn get_max(&self) -> T {
-        return self.max;
+        self.max
     }
 
     pub fn is_degenerate(self) -> bool {

src/util/morton.rs

@@ -7,7 +7,7 @@ use crate::Real;
 fn spread_bits(v: u32) -> u32 {
     let mut result = 0;
     for power in 0..9 {
-        result |= ((1 << power) & v) << power * 2;
+        result |= ((1 << power) & v) << (power * 2);
     }
     result
 }