moved around the file heirarchy to make these handles safer

src/compute/managed/compu_sprite.rs

@@ -0,0 +1,71 @@
+use crate::canvas::canvas_state::{Drawable};
+use std::sync::Arc;
+use crate::canvas::managed::handles::{CanvasImageHandle, CanvasTextureHandle};
+
+pub struct CompuSprite {
+    pub vertices: [(f32, f32, f32); 6],
+    pub ti_position: [(f32, f32); 6],
+
+    position: (f32, f32),
+    size: (f32, f32),
+    color: (f32, f32, f32, f32),
+    image_handle: Arc<CanvasImageHandle>,
+
+}
+
+impl CompuSprite {
+    pub fn new(position: (f32, f32),
+               size: (f32, f32),
+               depth: u32,
+               image_size: (f32, f32),
+               image_handle: Arc<CanvasImageHandle>) -> CompuSprite {
+
+        let normalized_depth = (depth as f32 / 255.0);
+
+        CompuSprite {
+            vertices: [
+                (position.0, position.1                  , normalized_depth),    // top left
+                (position.0, position.1 + size.1         , normalized_depth),    // bottom left
+                (position.0 + size.0, position.1 + size.1, normalized_depth),    // bottom right
+                (position.0, position.1                  , normalized_depth),    // top left
+                (position.0 + size.0, position.1 + size.1, normalized_depth),    // bottom right
+                (position.0 + size.0, position.1         , normalized_depth),    // top right
+            ],
+
+            ti_position: [
+                (0.0         ,  0.0         ),          // top left
+                (0.0         ,  image_size.1),          // bottom left
+                (image_size.0,  image_size.1),          // bottom right
+                (0.0         ,  0.0         ),          // top left
+                (image_size.0,  image_size.1),          // bottom right
+                (image_size.0,  0.0         ),          // top right
+            ],
+            position: position,
+            size: size,
+            color: (0.0, 0.0, 0.0, 0.0),
+            image_handle: image_handle.clone(),
+        }
+    }
+}
+
+impl Drawable for CompuSprite {
+    fn get_vertices(&self) -> Vec<(f32, f32, f32)> {
+        self.vertices.to_vec()
+    }
+
+    fn get_color(&self) -> (f32, f32, f32, f32) {
+        self.color
+    }
+
+    fn get_ti_coords(&self) -> Vec<(f32, f32)> {
+        self.ti_position.to_vec()
+    }
+
+    fn get_texture_handle(&self) -> Option<Arc<CanvasTextureHandle>> {
+        None
+    }
+
+    fn get_image_handle(&self) -> Option<Arc<CanvasImageHandle>> {
+        Some(self.image_handle.clone())
+    }
+}