added rounded rectangle, first iteration works but still needs improved corners

engine/shape.hpp

@@ -50,3 +50,18 @@ public:
         return create_buffers(idx, vertices, sizeof(idx), sizeof(vertices));
     }
 };
+
+class Rounded : public Shape
+{
+    void create_impl(float w, float h, float r, int div, GLushort* idx, GLushort* idx_tmp, vertex_t* vertices);
+public:
+    template<int div>
+    bool create(float w, float h, float r)
+    {
+        static GLushort idx[(10 + div * 4) * 3];
+        static GLushort idx_tmp[div+1];
+        static vertex_t vertices[12 + (div-1) * 4];
+        create_impl(w, h, r, div, idx, idx_tmp, vertices);
+        return create_buffers(idx, vertices, sizeof(idx), sizeof(vertices));
+    }
+};