VMD-L Mailing List

From: John Stone (johns_at_ks.uiuc.edu)
Date: Fri Jan 26 2007 - 17:16:22 CST

Hi,
  If you have the two atom coordinates, you can simply calculate
the direction you want by subtracting them and normalizing the
result. Once you have the direction vector, you can measure
the length of the original, add 10 to it, and then multiply the
direciton vector by the new length, add that to the starting coordinate,
and you'll have the new line endpoint. Does that make sense?

  John Stone
  vmd_at_ks.uiuc.edu

On Fri, Jan 26, 2007 at 05:01:14PM -0600, Narender Singh Maan wrote:
> Dear Users,
> Is there any way in which we can extend the line drawn by command "draw
> line" between two atoms in vmd?. i.e. i am drawing a line between atom A and
> B but i want to extand that line by 10Ang. beyond B in 3D space
> thank you
> singh 

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NIH Resource for Macromolecular Modeling and Bioinformatics
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