Render Smoke split in background and foreground for composite with a recorded image I'm trying to render a smoke to composite a filmed character in the middle of it, as in the example. 

I was wondering if there's a easy way to render the back of the smoke in one layer and the front of the smoke in another layer without creating two different domains as the smoke turns around the character. 

For the moment the only idea I had is using two cameras with complementary clipping, but it means to calculate two times. 

If anyone had any better idea, i'll be very glad to know it !!  :-)
is the character moving or is it only a still ?
Maybe you can create something like a card as a holdout for smoke in the back ?