How to customize Z-buffer with several Polydata

I have several Polydata representing surfaces in the same camera. They are in contact at their boundaries. I can see the polydata mesh that is supposed to be hidden. I tried to change the ClippingRange but it did not change the result.

Do you know why?
Thanks for your help

You need to play with the line offset on the mapper (static methods).


I called SetResolveCoincidentTopologyToPolygonOffset() but it does not seem to be enough. From your previous message, I think I have to call SetResolveCoincidentTopologyLineOffsetParameters() too but I do not understand what the parameters factor and units represent.