[MINC-users] Object opacity

[tpb1@ualberta.ca]

I'm trying to change the transparency of an object in the 3D window in 
order to reveal other objects behind it.  That is, I want to make the 
object in front more transparent than the object behind it (the object 
in front partially blocks the object in the back) so that the outline 
of the object in the back can be seen through the object in front.  I 
have played around with the Objects/Change Surface Prop function, but 
have been unsuccessful in changing the opacity in order to get the 
effect mentioned above.  (Opacity is defined from 0 to 1, with 0 being 
the transparent, 1 being fully opaque).  I also don't know the defaults 
for ambient, diffuse, specular, shininess and opacity.

If anyone has any insights, I would appreciate it.

Thanks,
Thomas