VMD-L Mailing List

From: Reid Van Lehn (rvanlehn_at_gmail.com)
Date: Fri Feb 26 2010 - 12:24:43 CST

Hello,

I have a script which draws a series of vectors (drawn using the draw
triangle and draw line commands) at points located radially away from a
center location. They are drawn with radial symmetry at defined angles.

What I would like to do is write another script to automatically rotate just
these drawn vectors by a given angle around the same center point, without
changing the positions of any atoms in the simulation. I know that if the
vectors were atoms I could use the "move" command on an atomselection in
conjunction with a rotation matrix, but I do not know how to do this with
graphics objects as it is my understanding that they cannot be selected with
atomselection commands.

Can you please tell me how to either:

A) Select graphics objects with atomselect, permitting rotation with the
move command, or
B) Retrieve the x, y, and z coordinates of existing graphics so I can
implement rotation manually.

If there are other solutions I would love to know!

Thank you very much,
Reid