During the midterm evaluation, dojox.gfx3d made some progress in the following approaches:

• Add Scene support: just the skeleton to create 3D objects from Scene, more test are needed for adopt/abandon. To be honest, I am not quite happy with the terminologies used here, it always reminds me some scenario of Law & Order
• Path3D support: add moveTo/lineTo, working on 3D Bezier curve

And still beating my brain out to figure out the visibility problem, the Painter's Algorithm seems the most feasible solution unless the chart developers enjoy torturing us with , attached snapshot of code add zIndex to 3D object, we just need figure out a more reliable to calculate the Z order.