Determine visibility of graphics object

I was wondering if it is possible to retrieve the z-buffer information of a figure. In my case I'm drawing a scatter3 and a surf plot. I want to separate markers hidden by the surface from the ones visible in the plot.

Answer 1

[Walter Roberson]

Unfortunately, there is no documented way to do this.

[Florian]

Maybe I could do that by using a affine transformation and checking for the distance. But how do I get that matrix from the figure?

[Josyula Gopala Krishna]

Did you solve this Florian? Thank you.