Label outline rendering in VTK.js's ImageResliceMapper

I’ve added label outline rendering for the oblique slicing ImageResliceMapper. This is based on the label outline rendering work already in ImageSliceMapper.

This is not on master - it’s a starting point if anyone is interested in this feature.

I would like to help to get this merged. What can i do?

Super. Feel free to do as you wish with the code. Feature works well in isolation, but it touches a few other things and I have not explored if that breaks other features.

And thanks for your intial outline work on which this is based. Would not have happened without that. =)

Would you mind creating a PR to vtk.js then i work there?

:person_tipping_hand: Reslice labelmap by PaulHax · Pull Request #3406 · Kitware/vtk-js · GitHub