Multimedia application can have animated effects that requires collisions
This is quite a vague reply... we'd prefer real use cases, especially if you wake up a 6 month old thread.
And the answer to that is simple: some multimedia applications need collision detection (like... games), but it doesn't mean that collision detection must be part of the multimedia back-end. These are still two separate things.
or even something as simple as a click on a button (collision between a box and a point - the mouse coordinates)
Such trivial tests are already available in SFML (Rect<T>::contains).
