Aven in stereoscopic 3D

[Pedro Silva Pinto]

Hi,

Sorry for taking this much time to reply.

--stereo=buffers is working, but left and right images are way too much
separated, causing a lot of eye strain: the 3D image pops out of the screen
so much that you'd have to be cross-eyed to see it comfortably! :) Way too
close for comfort. Otherwise, the 3D effect is OK.
If the image is moved back closer to screen level, it will be perfect. I
think the best practices in 3D rendering advise to set the screen plane
halfway along the Z-axis span: closer parts of the cave render in front of
the screen plane and more distant parts render 'behind' the screen plane.
I've only tested in Linux; will test in windows soon.

Best
Pedro

-----Original Message-----
From: Olly Betts [mailto:olly at survex.com] 
Sent: 20 de junho de 2018 01:33
To: Pedro Silva Pinto <pedrospinto at netcabo.pt>
Cc: survex at survex.com
Subject: Re: Aven in stereoscopic 3D

On Thu, Mar 01, 2018 at 12:21:22AM +0000, Pedro Silva Pinto wrote:
> Correction: the plan view rotates nicely centered. Also in plan view I 
> can reset the center of rotation clicking in a survey point.  it's the 
> profile and tilted views that rotate off-centered and I cannot click 
> on the survey points at all...

Sorry for not getting back to this for a while.

I've just pushed some changes to the stereo branch which add a --stereo
option with three different modes.

--stereo=buffers attempts to work with the hardware you have, but I can't
actually test that.  Please can you check that?

--stereo=anaglyph renders overlapping tinted red/cyan monochrome left and
right in one window for viewing with coloured glasses (red/green or red/blue
glasses both work on a red/cyan image).  Works for me (though my glasses are
cheap ones from cereal packets and there's quite a lot of bleed-through
between the two images).

--stereo=2up renders left and right side by side in one window for use with
a cardboard-style viewer (see
https://vr.google.com/cardboard/get-cardboard/).  I tested by exporting a
movie from aven and playing it on my phone, and it works well.  Not sure if
there's a neat way to screen mirror onto a phone to use this as an
interactive viewer.  If nothing else it'll be useful with an android port of
aven.

Cheers,
    Olly