[vtkusers] visualize transparent mesh model

[Qi Annie]

Hi.
I want to visualize a set of 3D objects in mesh model. Also I want the front
surface of them looks transparent, but not totally transparent. I mean you
can see the objects inside.
So I have to set different opacity values of different nodes, probably
according to the number of surface in front of it.

How can I do then ? If I use "SetOpacity" method, all the nodes should have
the same value. And the visualization result doesn't look good.

Thank you in advance.

Regards,

Annie
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