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From: Nicolas Sapay (nicolas.sapay_at_cermav.cnrs.fr)
Date: Wed Aug 04 2010 - 04:01:20 CDT

Hello,

I wish to render a picture with a focal blur effect using POVRay. The
focal point corresponds to the geometric center of an atom selection.
How can I convert its PDB coordinates into POVRay coordinates?
Actually, there is a second layer of complexity to my problem. I also
wish to display periodic images of my system, which will put the focus
point on the front periodic image, i.e. center + box length in PDB
coordinates.

Thanks,
Nicolas