VMD-L Mailing List

From: Nima Emadi (deeepsky_at_gmail.com)
Date: Thu Jan 28 2016 - 14:50:50 CST

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Dear all,

I want to make a movie from a given MD trajectory of some cylindrical rigid
particles.

Using graphics command in tcl, I'm able to produce a single snapshot.
However I am stuck when I want to add a new frame to my molecule.

Simplified version of what I have in my tcl script (for just one particle
which moves along z axis) is:

color Display Background white
mol new
graphics 0 color 7
graphics 0 cylinder {0 0 0} {0 0 1} radius 0.4 resolution 30 filled yes
animate dup 0
graphics 0 delete all
graphics 0 cylinder {0 0 0.5} {0 0 1.5} radius 0.4 resolution 30 filled yes

This draws the new cylinder in all frames. How can I restrict the drawing
to the current frame and keep all previous frames intact?

Thanks,
Nima

On Thu, Jan 28, 2016 at 8:10 PM, Nima Emadi <deeepsky_at_gmail.com> wrote:

> Dear all,
>
> I want to make a movie from a given MD trajectory of some cylindrical rigid
> particles.
>
> Using graphics command in tcl, I'm able to produce a single snapshot.
> However I am stuck when I want to add a new frame to my molecule.
>
> Simplified version of what I have in my tcl script (for just one particle
> which moves along z axis) is:
>
> color Display Background white
> mol new
> graphics 0 color 7
> graphics 0 cylinder {0 0 0} {0 0 1} radius 0.4 resolution 30 filled yes
> animate dup 0
> graphics 0 delete all
> graphics 0 cylinder {0 0 0.5} {0 0 1.5} radius 0.4 resolution 30 filled yes