I have already had extensive talks with Tom Goddard about why the jaggies are there and there is alreadys an entry in the gnats database. Normally, I try to not burden the email list with these details and keep them in the gnats database, but to summerize: Without hardware multisampling/supersampling (which chimera uses if it is available), you'll always have jaggies for cylinders, spheres, and surfaces. It is just more noticable if you have a white background because of how the primitives are shaded (dark on the sides). The solution for printing, is to supersample, that is to generate an image that is 16 times larger and average 16 pixels into one (9x might be sufficient). Regular grid supersampling will work for molecular modeling images (instead of the jittered sampling that ribbonjr uses) because there are extremely few right angles (so there is almost no chance that the "picket fence" effect of primitives appearing and disappearing from one frame to the next). Greg On Wed, 14 May 2003, Tom Ferrin wrote:
Okay, but please respond to Tom Goddard's email (w/ cc to chimera-dev) about jaggies in Chimera images.
--tom
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Forgot I had a dentist appointment today. First in many, many years. Marriage is a good thing.
Greg