Selection
Regl doesn’t have cameras or other objects; you have to provide them or use a library which does. I used http://glmatrix.net/
actually there is a camera of sorts :
but you are right lots of things are still ‘roll your own’ , or using the http://stack.gl ecosystem
Btw really nice work and sorry I am not much help yet , still in crunch mode for work 
+Peter van der Walt thanks I saw the posts ! will (finally) have time to reply this week end
Awesome! So much to learn.
Gasp…that looks…usable 
Nice work