[Chimera-users] vrml lighting

Tom Goddard goddard at sonic.net
Wed Feb 12 10:27:31 PST 2014


Hi Matt,

  Yes the VRML lighting is handled differently in Chimera than lighting for molecules and density maps.  As I mentioned before, our VRML implementation is very limited.  I guess this includes bad lighting, but I haven’t seen examples.  You may want to send an image so we know just what you mean by “lighting drops off”.  I have certainly seen many examples in the past where VRML transparency in Chimera looks very bad.

	Tom


On Feb 12, 2014, at 12:35 AM, Dougherty, Matthew T wrote:

> I have a multiple vrml models that vary by scale. 1, 10 & 100
> 
> I notice the lighting significantly drops off as the scale increases.
> 
> When I have another model, say PDB, that is in approximate relation (ie, viewable in regards to the volume size similar to the vrml files volumes); the PDB file looks good regardless of size (eg, tRNA or ribosome).
> 
> I can increase the brightness to compensate (10-20) but it washes out the PDB models when brightness goes beyond 2.
> 
> is the lighting handled differently between these different types of models?
> 
> 
> Matthew Dougherty
> National Center for Macromolecular Imaging
> Baylor College of Medicine
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