feat: added some post processing for retinaface

bounding-box/src/draw.rs

@@ -0,0 +1,39 @@
+use crate::*;
+pub use color::Rgba8;
+
+use ndarray::{Array3, ArrayViewMut3};
+
+pub trait Draw<T> {
+    fn draw(&mut self, item: T, color: color::Rgba8, thickness: usize);
+}
+
+// impl<T: Drawable<Self>> Draw<T> for Array3<u8> {
+//     fn draw(&self, item: T, color: color::Rgba8, thickness: usize) {
+//         item.draw(&self, color, thickness);
+//     }
+// }
+
+pub trait Drawable<Canvas, T> {
+    fn draw(&self, canvas: &mut Canvas, color: color::Rgba8, thickness: T);
+}
+
+/// Implementing Drawable for Aabb2 with Array3<u8> as the canvas type
+/// Assuming Array3<u8> is a 3D array representing an image with RGB/RGBA channels
+impl<T> Drawable<ArrayViewMut3<'_, u8>, T> for Aabb2<T>
+where
+    T: Num + core::ops::SubAssign + core::ops::AddAssign + core::ops::DivAssign,
+    T: PartialOrd,
+{
+    fn draw(&self, canvas: &mut ArrayViewMut3<u8>, color: color::Rgba8, thickness: T) {
+        use itertools::Itertools;
+        let (height, width, channels) = canvas.dim();
+        self.corners()
+            .iter()
+            .zip(self.padding(thickness).corners())
+            .tuple_windows()
+            .for_each(|((a, b), (c, d))| {
+                let bbox = Aabb2::from_vertices([*a, b, *c, d]);
+                todo!();
+            });
+    }
+}