[Chimera-users] Leap Motion

Tom Goddard goddard at sonic.net
Mon Jun 24 12:20:33 PDT 2013


Hi Aurélien,

  The Chimera daily builds now can use the Leap Motion device to rotate and translate molecules by waving your hands in front of the screen, available on Mac, Windows, Linux, 32-bit and 64-bit.  As I mentioned before this is for fun, not useful in my opinion, the signals from the device are erratic making fine motion control difficult.  Also the device is not for sale to the public until July 22, 2013.

  There are 3 different modes of waving your hands that I tried, all available using the new Chimera "leap" command. You use "leap start" to enable the device in Chimera.  The "leap position", "leap velocity" and "leap chopsticks" commands let you switch modes.  The "position" mode behaves as if your hand is the molecule.  The velocity mode imparts motion based on how far your hand is from the center like using Leap with Google Earth.  The chopsticks mode lets you use your index fingers on both hands to move, zoom and twirl the molecules.  More details are in our Chimera feature database:

	http://plato.cgl.ucsf.edu/trac/chimera/ticket/12170

  Tom



On Jun 19, 2013, at 9:35 AM, Tom Goddard wrote:

> Hi Aurélien,
> 
>  I have tried some Chimera code to use the Leap Motion device to rotate and move the scene.  I'm going to try to put that into the Chimera daily builds today for 64-bit Mac.  That is the only platform I've tested on.  It will take some testing to offer it on Window and Linux which I will attempt maybe later this week.  I'll post when it is in the daily build.
> 
>  You should only expect the device to be fun, not useful.  It is hard to get precise control, hard to disengage (stop moving your scene), your head is sometimes seen as a hand, there can be lots of jitters if your hand is near the edge of view of the device, or just tilted so the camera sees it edge on… the problems are beyond counting.  But it is fun and the company is working on all these technical glitches.
> 
>  For others, the Leap Motion is a USB device that has two cameras that track your hands and fingers as you wave them in front of your computer screen and allows you to control your computer applications.  The device is supposed to be available for purchase ($80) on July 22 but they have delayed the release many times over the past year so don't hold your breath.  Currently only developers working with the company can get a device.  The company is less than a mile from Chimera headquarters at UCSF so we visited them and became a developer.
> 
>  https://www.leapmotion.com
> 
> 	Tom
> 
> 
> On Jun 18, 2013, at 10:18 PM, Aurélien Grosdidier wrote:
> 
>> Hi all,
>> 
>> We're planning to try Chimera with the leap motion device
>> (https://www.leapmotion.com/). Has anyone already succeeded to do so ?
>> 
>> Best,
>> 
>> Aurélien.
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>> Chimera-users at cgl.ucsf.edu
>> http://plato.cgl.ucsf.edu/mailman/listinfo/chimera-users
>> 
> 
> 
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