chore: change return type of Mandelbrot::generate_image()

src/main.rs

@@ -109,7 +109,7 @@ fn startup(
     mut materials: ResMut<Assets<ColorMaterial>>,
 ) {
     let img_size = Vec2::new(Mandelbrot::width() as f32, Mandelbrot::height() as f32);
-    let img_buf = Mandelbrot::new().generate_image();
+    let img_buf = Mandelbrot::new().generate_image().to_vec();
 
     let texture_handle = textures.add(Texture::new(
         img_size,

src/mandelbrot.rs

@@ -26,7 +26,7 @@ impl Mandelbrot {
         Self::IMG_HEIGHT
     }
 
-    pub fn generate_image(&mut self) -> Vec<u8> {
+    pub fn generate_image(&mut self) -> &[u8] {
         self.texture_buffer
             .par_chunks_mut(4)
             .enumerate()
@@ -37,7 +37,7 @@ impl Mandelbrot {
                 buf.copy_from_slice(&Self::hsv_to_rgb(h, 0.6, 1.0));
             });
 
-        self.texture_buffer.clone()
+        &self.texture_buffer
     }
 
     pub fn generate_scaled_image(