See
Collection of examples from discourse.threejs.org
there https://hofk.de/main/discourse.threejs/2017/Xindex2017.html
use transparentDOM - @trusktr
Update
Maybe this will help
https://hofk.de/main/discourse.threejs/2018/index2018.html
there https://hofk.de/main/discourse.threejs/2018/RayCasterPlane/RayCasterPlane.html
@Norman updated @Mugen87)