Figure out heirarchical segments where bg is occluded by the fg#2

sksavant wants to merge 1 commit intomasterVectorly/webgl-player:masterfrom

feature/ch50/figure-out-heirarchical-segments-where-bgVectorly/webgl-player:feature/ch50/figure-out-heirarchical-segments-where-bgCopy head branch name to clipboard