[Chimera-users] translation + rotation of a whole scene

Nils Becker nils.becker at ens-lyon.fr
Wed Jun 11 01:55:29 PDT 2008

Hi Elaine,

thanks for your answer. Sorry that I did not make my question clearer. I 
know that move, turn , roll etc. do move models together. However, this 
is not what I need.

I need to specify a precise orientation and position of one of the 
molecule models, say #0, so that the view direction is exactly along a 
symmetry axis of that model. This orientation  and position was 
generated externally and I have it available as a rotation matrix and 
translation vector, in the same format as that used by matrixset/matrixget.

I could write the same matrix into a matrixset file N times for N 
models in the session. This however does not rotate the molecules 
together, but sets each one individually to the orientation and position 
  needed only for model 1.

is it possible to do that?

Thanks! Nils

Elaine Meng wrote:
> Hi Nils,
> Perhaps I am misunderstanding your question, but the movement commands 
> such as move, turn, roll, ...
> move all the models together.  Normally all models are movable 
> ("activated for motion") but the activation status of each can be 
> toggled  using select/~select commands, or the Model Panel "Active" 
> checkboxes, or the checkboxes under the Command Line.
> http://www.cgl.ucsf.edu/chimera/docs/UsersGuide/movies.html#moviecommands
> http://www.cgl.ucsf.edu/chimera/docs/UsersGuide/mouse.html#activedef
> You can combine various motion commands with the select command to 
> sequentially manipulate different subsets of the models.
> Here is a tiny example (commands):
> open 1zik
> open 1gcn
> open 6bna
> preset apply int 1
> roll y 2 45
> move x -1 25
> move x 10; move y -10
> ~select 0,1
> move x 2 10
> turn z 45
> select 0,1
> move y 1 25
> Semicolon (;) is for stringing commands together when you don't want to 
> see intermediate states.
> I hope this helps,
> Elaine
> -----
> Elaine C. Meng, Ph.D.                          meng at cgl.ucsf.edu
> UCSF Computer Graphics Lab and Babbitt Lab
> Department of Pharmaceutical Chemistry
> University of California, San Francisco
>                      http://www.cgl.ucsf.edu/home/meng/index.html
> On Jun 10, 2008, at 10:32 AM, Nils Becker wrote:
>> Hi list,
>> I have a question about rotating and translating a bunch of models
>> together while preserving their spatial relations. In particular, I
>> would like to apply a matrix almost as in the matrixset command. THe
>> difference is that I do not want to apply it individually to each model,
>> but to one chosen models, while having the rest move together with the
>> chosen model. Is that feasible in chimera?
>> cheers, Nils

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