Box array

src/lib.rs

@@ -34,7 +34,7 @@ impl std::fmt::Display for ComponentError {
 pub struct Encoder {
     index: usize,
     components: Components,
-    factors: Vec<(ComponentState, [f32; 3])>,
+    factors: Box<[(ComponentState, [f32; 3])]>,
     bounds: ImageBounds,
 }
 
@@ -60,11 +60,13 @@ impl Encoder {
         Ok(Self {
             index: 0,
             components: Components { x, y },
-            factors: (0..y)
-                .flat_map(|y| {
-                    (0..x).map(move |x| (ComponentState { x, y, basis: 0. }, [0., 0., 0.]))
-                })
-                .collect(),
+            factors: Box::from(
+                (0..y)
+                    .flat_map(|y| {
+                        (0..x).map(move |x| (ComponentState { x, y, basis: 0. }, [0., 0., 0.]))
+                    })
+                    .collect::<Vec<_>>(),
+            ),
             bounds,
         })
     }
@@ -137,7 +139,7 @@ impl Encoder {
     }
 
     pub fn finalize(mut self) -> String {
-        for (ComponentState { x, y, .. }, [r, g, b]) in &mut self.factors {
+        for (ComponentState { x, y, .. }, [r, g, b]) in self.factors.iter_mut() {
             let normalisation = if *x == 0 && *y == 0 { 1. } else { 2. };
 
             let scale = normalisation / (self.bounds.width * self.bounds.height) as f32;