 | | | Lume_wraparound and aliasing question (QTVR related) | Lume_wraparound and aliasing question (QTVR related) 2005-03-19 - By Alan Jones
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Oh - I just noticed something. If you're rendering for QTVRs then you
don't want a spherical projection anyway. Someone managed to get a
patent on using a spherical environment map for interactive panoramas
of some sort - anyway it was enough so Apple couldn't use it for QTVR.
There are two types of QTVR panoramas. There's cylindrical and cubic.
The cylindrical doesn't let you look in every direction and using a
spherical projection on this will give incorrect results. The cubic
one, which is the choice I'd recommened you make - needs a series of 6
images for each side of a cube to be built - there's a few different
apps out there to take the images and convert them - a google will
track them down. Anyway - rendering out these images is really easy.
Just get a camera delete the camera interest. You need to set the
picture to render a square the FOV to 90 degrees. Render on image for
each direction on each access. Use whichever program you picked to put
them all into a QTVR.
Hope this helps,
Alan.
On Sat, 19 Mar 2005 23:17:44 +0000, Mark Wirt <xsi@(protected)> wrote:
>
> I tried this shader with MAX7 and got good results with 0,1 / .05 / Gauss
> 3,3.
> Perhaps you just have a tricky scene.
> What things were you having problems with?
>
>
>
> Rob Wuijster wrote:
>
> Hi all,
>
> Just a quick question here;
>
> I'm rendering my scene with the Lume_Wraparound lens shader so I can use
> this for QTVR, and I have to cranck up the AA settings very high to get some
> decent results. And way high I mean in the min/max. 1/4 levels with
> thresholds of 0.03 and Mtichell 4,4. So rendertimes are sort of
> looooong......
>
> Is this because of the 360 dgr. distortion the shader creates??
>
> If anyone has some good tips on outputting a render for QTVR useage would be
> greatly appreciated ;)
>
> cheers,
>
> rob wuijster
> s-5 multimedia
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