Yes, its quite simple in concept actually.
In v3, in your Pie 3D Chart you have an attribute named pieSliceDepth which controls the vertical dimension of the pie, specified in pixels.
Instead of controlling the entire pie and all its slices with one setting, I need to set different vertical dimensions for each individual pie slice.
I assume this would happen in the < set > elements which sets attributes for the individual slices. For example, you can set color, link, tooltip, and other values for each individual slice.