Re: [Jmol-users] Stereographic rendering: YES, it is possible

[Richard Shafer]

It is indeed possible to get Jmol to work with a passive 3d setup, i.e. 
using two projectors polarized perpendicular to each other and a 
non-depolarizing screen. You can connect the external VGA of a laptop to 
the Matrox DualHead2Go adaptor:

http://www.matrox.com/graphics/en/products/gxm/dh2go/

which provides two output signals, one for each projector. Set up 
graphics display on the laptop to extended mode for the external VGA 
signal and open a Jmol page in the extended display area, invoke the 
side-by-side stereo display mode (cross-eyed or wall-eyed.. one of these 
will be correct depending on your connections) and one side will go to 
one projector, the other side to the other projector. The built-in 
laptop screen can be used for the script window while the Jmol page 
displays on the external screen...very convenient. This gadget is not 
expensive...CDW sells analog version for $149.

I have done this with a plain vanilla Dell laptop with Intel integrated 
graphics...i.e. nothing specialwill work with nvidia and amd 
graphics cards (although not necessarily all of them (see the Matrox 
site for compatibility) and I have also done this with mac laptops. 
Passive glasses can be bought in bulk very inexpensively.

Dick Shafer
School of Pharmacy
UCSF

On 4/17/2011 5:23 PM, tvrb wrote:

 wagquack wrote:
 However I did not find the option described in the standalone application?
 Could somebody please help me and tell me if this is possible ?

 wagquack, it looks like your article shows exactly how to get stereographic
 3d.  Open a molecule, right click, go to style --  stereographic --  select
 your style of stereographic 3d.

 Forgive me for hijacking this thread, but I have a similar question for
 anyone who may be reading this:
 Is it possible to get JMol to work with a passive 3d setup (2x polarized
 projectors and polarized glasses)?  I haven't done extensive testing, but I
 don't see an easy option like I do in DS Viewer Pro (for instance).


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Re: [Jmol-users] Stereographic rendering: YES, it is possible

[Richard Shafer]

On 4/18/2011 8:44 PM, Tucker wrote:


It is indeed possible to get Jmol to work with a passive 3d setup,
i.e.
using two projectors polarized perpendicular to each other and
a non-depolarizing screen.

Set up graphics display on the laptop to extended mode for the
external VGA
signal and open a Jmol page in the extended display
area, invoke the
side-by-side stereo display mode (cross-eyed or
wall-eyed.. one of these
will be correct depending on your
connections) and one side will go to
one projector, the other side to
the other projector. The built-in
laptop screen can be used for the
script window while the Jmol page
displays on the external
screen...very convenient. This gadget is not
expensive...CDW sells
analog version for $149

Thanks for the responses!  The setup I'm working with already works 
with DS Viewer Pro (we have the proper video card, silver screen, and 
3d glasses).  I will definitely try this new way to get the 
cross-eyed/wall eyed views to work.  Just to confirm, I should 'extend 
the desktop' and open a Jmol on the extended screen.  I'm concerned 
that this will simply show 2 side-by-side images, just like when you 
select this stereographic mode on the monitor (as opposed to two 
overlapping images, one of a slightly different angle).


Here is the setup I'm working with: 
http://chemed.chem.pitt.edu/3DProjection/technical.htm 
http://chemed.chem.pitt.edu/3DProjection/technical.htm
It would be great to show a 3D animation of an enolation or similar 
rxn before the semester ends!



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Yes, you should set the graphics display mode to extended (rather than 
mirror), move the Jmol window into the extended screen...which should 
move it off your laptop screen, then maximize the  window and it should 
extend the standard view across the two screens. But when you invoke the 
side-by-side mode, each external screen should get exactly one of the 
views. At least this is how the DualHead2Go adapter works in our 
experience. If your graphics card has two outputs, and you bypass the 
Matrox adapter, I am not sure how things will work but I would think it 
would be OK.


I would practice the setup in my office using two external monitors to 
which I would connect the two outputs of the DualHead2Goand when the 
side-by-side mode results in a full image on each monitor, then it will 
work OK with the two projectors.
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