deprecated structure fields & other problems

just a few things popping up when playing around with basic samples - this was from the shapes example
<img width="1457" alt="screen shot 2018-11-04 at 18 26 59" src="https://user-images.githubusercontent.com/11299322/47968270-7ab50a00-e05f-11e8-899c-1e1b42e8970a.png">
