Rotating though an enum idiom

[Spacen Jasset]

Spacen Jasset wrote:
> Is there a way to "rotate" though and enum; So that:
> 
> 
> enum RenderMode { POINT, LINE, FILL }
> 
> renderMode = POINT;
> fn(renderMode) gives LINE
> fn(renderMode) gives FILL
> fn(renderMode) gives POINT
> and so on, in rotation.
> 
> I would normally use some sort of modulo operation on an int to do this, 
> but I wonder if there is another way.
Like this:
mRenderMode = cast(RenderMode)((mRenderMode + 1) % (RenderMode.max + 1));