[chimerax-users] Change the size of the model

[Tom Goddard]

Hi Shuto,

  How big molecules look in VR is determined by the eye separation you set.  This is described in the ChimeraX VR docs

	https://www.rbvi.ucsf.edu/chimerax/docs/user/vr.html

"Eye separation / physical scale. In recording a stereoscopic (two-eye) movie, it is important to choose an appropriate eye separation in the units of the scene, typically Å. This controls how large and nearby the models will appear in the headset. For the nuclear pore, which is 1000 Å in diameter with a channel diameter of about 500 Å, the script sets the eye separation to 25 Å. Thus, the channel diameter will appear to be 20x (500/25) the actual eye separation. For example, if a viewer's eyes are actually two inches apart, the channel diameter will appear to be 40 inches.”

You set this parameter with the camera command, for example,
	camera 360sbs eyeSeparation 1.0
will set the eye separation to 1 Angstrom.  Since your physical eye separation is about 6 cm, this would make 1 Angstrom look to be about 6 cm in size in the VR.

	Tom


> On Apr 30, 2018, at 8:51 PM, Shuto Araki wrote:
> 
> Dear Chimera X developers, 
> 
> I am trying to create a VR protein tour video by using the movie command. There is no problem and it works perfectly fine, but I was wondering if I could change the size of molecule models themselves so that, when the camera is inside a model, I can look around the inner structure of the model with the surface further placed. Right now, the model is so small that the surface feels too close to the camera when it is inside the model.
> 
> Is it possible to change the size of a model with the coordinate being fixed?
> 
> Thanks, 
> Shuto
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