P3D Re: stereo laser pointer

[roberts@xxxxxxxxxxxxxxxxx (John W Roberts)]

>Date: Wed, 5 May 1999 07:37:35 -0600
>From: "ron labbe" <ron@xxxxxxxxxxxx>
>Subject: P3D stereo laser pointer

>>Any hackers/pros out there put together a stereo laser pointer?
>>thanks~

>[George?]
>>I have to ask: just what makes a laser pointer stereo or flat?

>Looking for one for polarized projection so you can move the point in and
>out of the stereo window: a dual, polarized set-up with an interocular
>control. I'd heard rumors that something like this was developed, but I
>don't know if it was one-of-a-kind, or even just stereo myth...

>>If you can control the depth with respect to
>the screen that the point is pointing, then you have a stereo
>pointer.  Otherwise it is flat.

What happens if you point a regular (but not linearly polarized, or
oriented to avoid extinction in either eye) laser pointer at
a projected stereo image, pointing it at an object in the scene that
is behind the stereo window? My guess would be that a person viewing
the stereo image on the screen would see two dots instead of one. I haven't
noticed that being explicitly stated in this discussion. Is that what
happens?

If this is the case, and if I wanted to use a laser pointer to point out
objects in the stereo view, then I can see how the ability to control the
depth would be useful. 

John R


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