voxelization (.amf) --additive manufacturing file format

mac-OS; ver-2018

Given, cylinder inside a cylinder(both are solids not opaque). I would like to voxelize it and display slices.

k1=matrix containing vertices of outer cylinder.

k2=matrix containing vertices of inner cylinder.

f11=matrix of faces of outer cylinder.

f22=matrix of faces of inner cylinder.

to voxelize i use file from https://www.mathworks.com/matlabcentral/fileexchange/27390-mesh-voxelisation.

to display the voxelized object i use https://www.mathworks.com/matlabcentral/fileexchange/4190-imlook3d

I extract the vertices and faces seperately from the .amf file

i concatenate the two matrcices together [k1;k2] and [f11;f22].

and when i try to display the voxelized result i get the seperated cylinders (see attached fig)

When comma is used instead of semicolon while concatenating, the result after voxelization is two cylinders side by side .

what i would like to achieve after voxelization and slicing is the layer of two cylinders intact .

Any suggestions on how to tackle the problem.

Thankyou.