stereo projection issue - WorldViz User Forum

asimbh · #1 10-04-2007, 12:12 AM

Hi,
In stereo mode, when zooming in, the x-offset of the objects decreases (i.e. overlapping increases) whereas when zooming out the offset increases, which is opposite to way it suppose to be.
I was wondering if there are some settings that I can use to reverse this issue.

Thanks

farshizzo · #2 10-04-2007, 10:09 AM

Which stereo mode are you using?

asimbh · #3 10-04-2007, 09:52 PM

I have used a number of modes such as

viz.go(viz.STEREO | viz.FULLSCREEN | viz.HMD)

and

viz.go(viz.QUAD_BUFFER)

with some customized settings as well according to my device

viz.stereooverlap(.95)
viz.fov(24, 1.33)
viz.ipd(0.06)

and the display mode I'm using is "horizontal span"

farshizzo · #4 10-05-2007, 11:22 AM

The offsets are most likely caused by the asymmetric view frustums that are generated for non-HMD stereo displays, which is expected. Make sure you specify the viz.HMD flag with viz.go() when using an HMD. If you are using shutter glasses then you should not be using the viz.HMD flag, instead you should use the viz.MainWindow.screenDistance(meters) command to specify the distance between the user and the screen.