showOrientationAxis doesn't work anymore

[WesleyTheGeolien]

It looks like: #59 introduced a bug meaning View components with showOrientationAxis={true} no longer works. here is a codesandbox demo: https://codesandbox.io/s/react-vtk-with-data-template-k86emm?file=/src/App.js

I believe there are 2 approaches:

• force the user to specify a renderer and renderwindow
• if renderer and renderwindow are undefined create them as before (probably better?)

Happy to do the PR if you guide upon which solution is preferred

[jourdain]

@floryst what do you think?

[floryst]

I think all we need to do is move this block of code into the constructor, since that DidMount hook will run after the child <View /> DidMount hook finishes. This is effectively the same idea as your second approach, with the renderer being added to the render window prior to anything being done with it.

[floryst]

@WesleyTheGeolien that block should go right around here. If that change works for you locally, it would be great if you could submit a PR for it.