[simpits-tech] project update...

[Gene Buckle]

On Thu, 30 Jun 2011, dabigboy at cox.net wrote:

> Great stuff Gene, it's looking great! Question: what are you doing about 
> screen warping to handle the pin-cushion effect? Forgive me if this was 
> discussed in an earlier post, up until now my main interest has been in 
> the geometry and basic theory behind your rig. I'm just now getting into 
> this myself, planning a somewhat simpler setup using a flat-white 
> spherical projection screen with three projectors pointing at it 
> directly (saw it last week in an AS350 heli sim at FlightSafety, which 
> renewed my interest in this simple and somewhat more forgiving 
> approach). I believe you would have the same kind of correction since 
> you are rear-projecting onto that curved "little" screen.
>
Thanks Matt.  The pre-warp is done via NThusim+.  It handles everything 
except the spherical distortion correction which is only handled by their 
Sol7 product.

Also, I'm not rear-projecting.  The projectors fire out at a fold mirror 
which in turn puts the image on the screen right below the projector.

> How's your performance in X-Plane at such large resolutions required to 
> drive the TH2Go on three displays?

I haven't tried XPlane on it - I may not.  It has stretching issues with 
large displays unless you go to multiple computers/copies.

g.

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