src/graphics_api_impl.rs

@@ -32,8 +32,8 @@ impl AglApi for GraphicsRenderer {
         let x2 = coords_end.x;
         let y2 = coords_end.y;
 
-        let dx = x2.wrapping_sub(x1);
-        let dy = y2.wrapping_sub(y1);
+        let dx = x2 - x1;
+        let dy = y2 - y1;
 
         for x in x1..x2 {
             let y = y1 + dy * (x - x1) / dx;
@@ -63,9 +63,7 @@ impl AglApi for GraphicsRenderer {
         thickness: u32,
         color: RGBA,
     ) {
-        self.put_line(coords_1, coords_2, thickness, color);
-        self.put_line(coords_2, coords_3, thickness, color);
-        self.put_line(coords_3, coords_1, thickness, color);
+        todo!();
     }
 
     fn paint_cursor(&mut self, coords: Point) {

src/main.rs

@@ -83,20 +83,6 @@ fn main() {
         },
         "Hello".to_string(),
     );
-
-    xyz.put_triangle(
-        Point { x: 10, y: 40 },
-        Point { x: 30, y: 100 },
-        Point { x: 10, y: 90 },
-        8,
-        RGBA {
-            r: 8,
-            g: 7,
-            b: 7,
-            a: 255,
-        },
-    );
-
     // update pixels
     for x in 0..600 * 400 {
         buffer[x] = [xyz.buff[x].r, xyz.buff[x].g, xyz.buff[x].b, xyz.buff[x].a]