This came off the Pinterest site....don't know who makes it.

https://i.pinimg.com/736x/0a/c2/97/0...ass-shower.jpg

It's called "D Shaped", I did a quick google search but don't see them this side of the pond.

You could see if a custom glass guy can do it, then do a mud/tile pan.

Or deal with China: https://www.alibaba.com/product-detail/china-D-shape-hangzhou-shower-enclosure_1242099054.html?spm=a2700.7724857.0.0.3d c17f03d7umzB

I'd start with the drain location.
 

If you have a concrete basement floor, (as opposed to a standard platform framed wood floor). you must find a shower unit that has the same drain location. (from the wall and depth), or do a mortar bed shower pan.
Having been a contractor for 30 years, i like the simplicity and water tightness of a one piece pan - but the drain has to be "in the right place".
Good luck,
chris

I’ve got a clean slate so to speak. its a half bath now so I would break up the concrete and add a drain where I need it.

Wow that’s a 10 piece min order.....Group buy?

If that's the case I'd swap places with the shower and the toilet. A neo-angle shower would work well in the corner and the acute angles (hard to clean) would be avoided.

Neo-angled or square showers are common as they can be. No special orders. You can get both with frameless glass. I too believe in one piece pans. Kohler makes the best I've seen. Both enameled cast iron and composite.

Swapping the toilet and shower....that’s a worthwhile thought. Thanks!

Maybe something like this:http://forums.pelicanparts.com/uploa...1610912801.jpg

Good idea Zeke.

Now I'd swap the sink and toilet, and swing door so you see the shower and vanity first (hinge toilet side)