Generic way to rotate and flip shapes

It would be nice to provide an option to rotate a given shape or flip it.

Right now this could be accomplished using the transformer, but we had to disabled it since the rotate functionallity was buggy (not stable in our shapes).

So we need here first some brainstorming, my two cents:

• We could add an option in the context menu.
• We could add them on the properties panel (like the z-index thingie)

Another challenge we have to find a way that makes this generic (no need to be implemented on every shape, maybe let's start only with the basic shapes (the rest are not that important, and have an additional challenge resizing limitations and inline edition).

Maybe we could add a generic control that just adds a wrapper and applies a rotate transform on the shape?

Inizia esaminando il transformer esistente e il modo in cui vengono gestite le forme di base. Confronta il menu contestuale e il pannello delle proprietà come possibili punti di ingresso, quindi determina come un wrapper generico potrebbe supportare la rotazione e il capovolgimento senza implementazioni specifiche per ogni forma. Il lavoro è completo quando l’approccio è concordato e stabile per le forme di base selezionate.