Miguel wrote:
very nice, could this be aliased toBob wrote:
Anthony,
In actuality, Jmol uses a simple transformation matrix for its internal
representation of the viewing perspective.
Correct.
Is your concern that Jmol internally is using an odd convention, or that
there should be an option for outputting the current rotation of the model
in other formats?
I agree with Anthony.
To the extent that there is a 'standard' way to perform 3 rotations to orient in 3-space then we should follow it.
As far as I know, the only reason we were interested in the Rx*Ry*Rz
idea is that some would like to be able for the user to rotate the
model freely,
Agreed.
But it seems that this is the 'correct' way to represent these rotations.
then set that position using simple chime rotations.
Note that this is the rasmol/chime 'rotate {axis} {degrees}' command, not the chime 'move' command (which will not work with these numbers).
In terms of output, the axis angle convention is available in the latest
beta version as well.
Correct. And it seems to me that this is the 'preferred' way to do it.
See the "show axisangle" and "moveto" commands, as shown in http://www.stolaf.edu/people/hansonr/jmol/docs/examples/moveto.htm
Are you saying you'd like to have
show euler
or
show quaternion
along with
show axisangle
In the current CVS head, the command changed to 'show orientation'.
This command shows everything that needs to be done to return the molecule to the current orientation.
It outputs one moveTo command
As an alternate, it also outputs a series of rotate commands (+ zoom +
translate)
show rotation
show translation
which are existing RasMol commands (the output didn't need to be the same, since it has to be parsed when using the JmolApplet anyway, but then there is no need to write different scripts for RasMol and Jmol.
Regards, Jan
This command should output the 'rotate' commands using the euler rotation x-convention.
Miguel
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