Hi Steve, Unfortunately Chimera allows at most one transparent model, with all others opaque if you want correct rendering. As you observed, the models are rendered one after the other, so the second one always appears on top. It would be possible in the future to make volume viewer surfaces render in one model so that all of the surface could be transparent. But then it would not be possible to move one model relative to the other. Would that be useful to you? How important is multiple model transparency to you? Tom

Date: Sat, 7 Dec 2002 14:47:31 -0600 (CST) From: Steven Ludtke <stevel@blake.3dem.bioch.bcm.tmc.edu> X-X-Sender: stevel@id.3dem.bioch.bcm.tmc.edu Reply-To: sludtke@bcm.tmc.edu To: Thomas Goddard <goddard@cgl.ucsf.EDU> Subject: Re: Chimera at NCMI In-Reply-To: <200212030001.gB301Ull676766@adenine.cgl.ucsf.edu> Content-Type: TEXT/PLAIN; charset=US-ASCII X-Filter-Version: 1.9 (cgl.ucsf.edu)

Hi again. Sorry to keep pestering you. I just ran into another little problem, and I wanted to find out if its another bug with the NV driver, or if it's a problem with the vol viewer.

I just tried to display 2 volume sets simultaneously, and discovered that it appears that each set is being rendered individually, rather than as part of the same model. That is, when the structures intersect, I see all of one structure or all of the other structure rather than proper clipping/intersecting. Any ideas ?

TIA!

-- ---------------------------------------------------------------------------- Steven Ludtke, PhD | Baylor College of Medicine sludtke@bcm.tmc.edu | Co-Director stevel@alumni.caltech.edu | National Center For Macromolecular Imaging V: (713)798-6989 | Dept of Biochemistry and Mol. Biol. instant messenger: sludtke42 | * Those who do ARE * http://ncmi.bcm.tmc.edu/~stevel | The converse also holds