[chimerax-users] movie recording while changing threshold level

[Elaine Meng]

Hi Dmitry,
You could do it using "perframe" with an embedded "volume level" command in your movie script.  

For example, the following gradually changes map #2 contour level from 2.5 to 0.5 over 50 image update frames:

perframe "volume #2 level $1" range 2.5,0.5 frames 50

See the "perframe" help for details:
<https://rbvi.ucsf.edu/chimerax/docs/user/commands/perframe.html <https://rbvi.ucsf.edu/chimerax/docs/user/commands/perframe.html>>

I hope this helps,
Elaine
-----
Elaine C. Meng, Ph.D.                       
UCSF Chimera(X) team
Department of Pharmaceutical Chemistry
University of California, San Francisco

> 
> From: Dmitry Semchonok <semchonok at gmail.com>
> Date: July 26, 2022 at 8:17:36 AM PDT
> 
> Thank you very much for your tips.
> Works as a charm.
> How 1 more question if you please -
> Is it possible to record a movie while your 3D map constantly changing its threshold volume level (from low to high - which is possible to set) ? 
> If yes, how? 
> Thank you in advance.
> Sincerely,
> Dmitry
> 
>> 
>> Although it would still be nice to have a separate option, currently
>> ndependent rotation can be scripted by using separate turn (or roll)
>> commands as in this example from Tom Goddard:
>> 
>> You can use the "model" and "center" options of the turn command to rotate
>> each model about their own center.  For example, rotating 2 models in 1
>> degree steps around the y axis for a total of 360 degrees
>> 
>> movie record
>> turn y 1 360 model #1 center #1
>> turn y 1 360 model #2 center #2
>> wait 360
>> movie encode side-by-side-spin.mp4
>> 
>> In this example the two models rotate at the same time.  The turn command
>> like other commands that create a motion returns immediately before any
>> motion is done to allow you to start simultaneous motions.  Then you use
>> the "wait 360" command to wait until 360 frames have been rendered, then
>> the .mp4 movie file is made.
>> 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.rbvi.ucsf.edu/pipermail/chimerax-users/attachments/20220726/39512b65/attachment.html>