Hugues,

1) PyMOL will not render identical overlapping surface triangles correctly -- 
it is a weakness in the current algorithm.

2) If the surfaces are truly distinct are distinct, then you'll only see one of 
the unless you select multilayer transparency, in which case you'll see both 
sides of transparent surfaces (which doesn't look so great either).

Sorry!

Cheers,
Warren

--
Warren L. DeLano, Ph.D.                     
Principal Scientist

. DeLano Scientific LLC  
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> -----Original Message-----
> From: pymol-users-ad...@lists.sourceforge.net 
> [mailto:pymol-users-ad...@lists.sourceforge.net] On Behalf Of 
> Hugues Nury
> Sent: Thursday, August 25, 2005 5:15 AM
> To: pymol-users@lists.sourceforge.net
> Subject: [PyMOL] Overlapping surfaces
> 
> Hi,
> 
> I have a problem raytracing an image with overlapping surface.
> Ok I have a protein and a lipid close to it, I draw surfaces 
> (transparency .7) of both, and there are slightly 
> overlapping. To see the whole lipid surface, I have to hide 
> and show again the protein, otherwise the ovelapping part do 
> not appear. Don't know why. When raytracing, this small 
> overlapping surface is missing again.
> 
> (I guess this is not perfectly clear, so you can see the images at
> http://pagesperso.laposte.net/huguesnury/Pymol/pymol_temp.html)
> 
> Does anyone have an idea ?
> 
> Thanks,
> Hugues
> 
> --
> Hugues Nury
> PhD Student
> Laboratoire des Protéines Membranaires
> Institut de Biologie Structurale
> 41 rue Jules Horowitz - F 38027 Grenoble Cedex 1 - France 
> tel. +33 (0)4 38 78 95 92
> 
> 
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