[Chimera-users] clipping (interior surfaces and solids)

Eric Pettersen pett at cgl.ucsf.edu
Tue Mar 1 11:12:22 PST 2005

Hi Andrew,
	I want to supplement Tom's answer a little bit.  He didn't really 
emphasize that the capping stuff he wrote works interactively -- as you 
move the clip plane around the cap adjusts, maintaining the illusion of 
cutting through a solid.
	Having the interior of a surface look different from the exterior has 
been on Greg's "to do" list for a while now.  It still seems worthwhile 
despite the capping extension since there are times you might want to 
"cut through" a surface to expose the underlying structure.  At any 
rate, there are a lot of things on Greg's to-do list, so I don't know 
when he'll have time to get to this.


On Mar 1, 2005, at 9:38 AM, Thomas Goddard wrote:

> Hi Andrew,
>   We have already implemented capping of clipped surfaces.  When you 
> cut
> the surface with a clip plane it appears solid.  The cap can be made a
> different color, or you can colormap volume data onto it.  This is not
> yet released, but we plan to make a snapshot within 2 to 3 weeks that
> will include it.  It only works for molecular, volume and multiscale
> surfaces, not ribbons, spheres or other molecular model 
> representations.
>   The phage T4 slab in the Chimera image gallery illustrates the 
> capping.
> Also the semliki forest virus images shows it.
> 	http://www.cgl.ucsf.edu/chimera/ImageGallery/
>   If you have the above capping is it still important to have different
> interior and exterior surface colors?  We added the capping because 
> views
> of the interior of a surface don't seem very useful.
>    Tom
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