Finish implementing Rectangle

src/geometry.rs

@@ -129,6 +129,36 @@ impl Rectangle {
             height,
         }
     }
+
+    fn top_left(&self) -> Point {
+        self.top_left
+    }
+
+    fn top_right(&self) -> Point {
+        Point::new(self.top_left.x() + self.width, self.top_left.y())
+    }
+
+    fn bottom_right(&self) -> Point {
+        Point::new(
+            self.top_left.x() + self.width,
+            self.top_left.y() + self.height,
+        )
+    }
+
+    fn bottom_left(&self) -> Point {
+        Point::new(self.top_left.x(), self.top_left.y() + self.height)
+    }
+
+    fn area(&self) -> u32 {
+        self.width * self.height
+    }
+
+    fn intersects(&self, other: &Rectangle) -> bool {
+        !(self.top_left().right_of(&other.top_right())
+            || self.top_left().below(&other.bottom_left())
+            || self.top_right().left_of(&other.top_left())
+            || self.bottom_left().above(&other.top_left()))
+    }
 }
 
 #[cfg(test)]